:root {
    --background: #0d0d0d;
    --deep-wood: #1a140e;
    --text: #f5f1e6;
    --muted: rgba(245, 241, 230, 0.55);
    --gold: rgba(215, 188, 117, 0.8);
    --gold-soft: rgba(215, 188, 117, 0.5);
    --spacing: clamp(90px, 10vw, 140px);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Inter", "Noto Sans JP", "Shippori Mincho", sans-serif;
    background-color: var(--background);
    color: var(--text);
    letter-spacing: 0.04em;
    line-height: 2;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    display: block;
}

.noise {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image: url("https://www.transparenttextures.com/patterns/asfalt-light.png");
    opacity: 0.07;
    z-index: 0;
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px clamp(20px, 5vw, 60px);
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent);
}

.brand {
    font-size: 14px;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--gold);
    text-decoration: none;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

.lang-toggle {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--muted);
    font-size: 10px;
    letter-spacing: 0.2em;
    padding: 6px 14px;
    border-radius: 999px;
    cursor: pointer;
    transition: color 0.3s ease, border-color 0.3s ease;
    white-space: nowrap;
}

.lang-toggle:hover {
    color: var(--gold);
    border-color: var(--gold);
}

/* 言語切替をリンクにした場合もボタンと同じ見た目にする */
a.lang-toggle {
    display: inline-block;
    text-decoration: none;
}

.site-header nav {
    display: flex;
    gap: 18px;
    font-size: 12px;
    margin-left: auto;
}

.site-header nav a {
    color: var(--muted);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    transition: color 0.3s ease;
}

.site-header nav a:hover {
    color: var(--gold);
}

.menu-toggle {
    display: none;
    width: 48px;
    height: 48px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    background: transparent;
    color: var(--text);
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.menu-toggle span {
    position: absolute;
    width: 18px;
    height: 2px;
    background: var(--text);
    transition: transform 0.4s ease, opacity 0.4s ease;
}

.menu-toggle span:first-child {
    transform: translateY(-4px);
}

.menu-toggle span:last-child {
    transform: translateY(4px);
}

.menu-toggle.active span:first-child {
    transform: rotate(45deg);
}

.menu-toggle.active span:last-child {
    transform: rotate(-45deg);
}

main {
    position: relative;
    z-index: 1;
}

section {
    padding: var(--spacing) clamp(24px, 8vw, 160px);
}

.hero {
    min-height: 80vh;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    align-items: center;
    padding-top: 140px;
    gap: 60px;
    background-color: var(--background);
}

.hero-content h1 {
    font-size: clamp(36px, 6vw, 48px);
    margin: 16px 0;
    letter-spacing: 0.1em;
}

.hero-content .lead {
    font-size: 18px;
}

.label {
    font-size: 12px;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--muted);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 32px;
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-visual img {
    width: min(420px, 90%);
    /* width/height属性でCLSを防ぎつつ、高さは元の比率どおり可変にする */
    height: auto;
    border-radius: 28px;
    box-shadow: 0 40px 90px rgba(0, 0, 0, 0.55);
    object-fit: cover;
}

.timeline {
    background: var(--background);
    padding: 60px clamp(24px, 8vw, 160px);
    text-align: center;
}

.timeline .label {
    margin-bottom: 18px;
}

.timeline-line {
    display: flex;
    justify-content: center;
    gap: 18px;
    font-size: 0.85rem;
    letter-spacing: 0.4em;
    color: var(--gold);
}

.timeline-line span {
    white-space: nowrap;
}

.timeline-line .ellipsis {
    letter-spacing: 0;
}

.about {
    background: var(--background);
    color: var(--text);
}

.about .wide-copy {
    max-width: 620px;
}

.btn {
    padding: 14px 36px;
    border: 1px solid var(--gold);
    color: var(--gold);
    text-decoration: none;
    letter-spacing: 0.2em;
    font-size: 12px;
    text-transform: uppercase;
    transition: background 0.4s ease, color 0.4s ease;
}

.btn:hover {
    background: var(--gold);
    color: var(--background);
}

.btn.ghost {
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--text);
}

.btn.ghost:hover {
    border-color: var(--gold);
    color: var(--background);
}

.wide-copy {
    max-width: 780px;
    margin: 0 auto;
    text-align: center;
}

.wide-copy h2 {
    font-size: 24px;
    letter-spacing: 0.2em;
    margin-bottom: 32px;
    color: var(--gold);
}

.section {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.section-head {
    text-align: center;
    margin-bottom: 60px;
}

.section-head h2 {
    font-size: clamp(28px, 4vw, 36px);
    letter-spacing: 0.08em;
}

.section-head .copy {
    color: var(--muted);
}

.section-bookshelf {
    background-color: var(--deep-wood);
    color: var(--text);
    padding: 5rem 0 6rem;
    animation: bookshelfEnter 1.4s ease-out both;
}

.bookshelf-header {
    max-width: 1080px;
    margin: 0 auto 2rem;
    padding: 0 24px;
}

.bookshelf-header h2 {
    font-size: 1.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

.bookshelf-header p {
    font-size: 0.95rem;
    opacity: 0.7;
}

.online-library {
    background: var(--background);
    color: var(--text);
}

.online-library-inner {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
}

.online-library-inner h2 {
    font-size: 1.6rem;
    letter-spacing: 0.1em;
}

.bookshelf-scroll {
    display: flex;
    gap: 32px;
    padding: 1.5rem 24px 0;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    /* スナップ基準を内側に揃える。無いと1枚目が画面端に貼り付き見出しとズレる */
    scroll-padding-left: 24px;
    -webkit-overflow-scrolling: touch;
}

.bookshelf-scroll::-webkit-scrollbar {
    display: none;
}

.book-card {
    display: block;
    width: 230px;
    scroll-snap-align: start;
    flex-shrink: 0;
    text-decoration: none;
    color: inherit;
}

.book-cover {
    position: relative;
    width: 220px;
    height: 302px;
    border-radius: 4px;
    overflow: hidden;
    flex-shrink: 0;
    transform: translateY(0);
    transition: transform 0.6s ease, box-shadow 0.6s ease;
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.book-cover-flat {
    border-radius: 0;
}

.book-cover::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.15);
    transition: opacity 0.4s ease;
}

.book-card:hover .book-cover {
    transform: translateY(-8px);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.55);
}

.book-card:hover .book-cover::after {
    opacity: 0;
}

.book-meta {
    margin-top: 0.75rem;
}

.book-meta h3 {
    font-size: 0.9rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 0.2rem;
}

.book-year {
    font-size: 0.75rem;
    opacity: 0.6;
}

.book-card-coming .book-cover-coming {
    background: radial-gradient(circle at 0% 0%, #2f2a1e, #050505 70%);
    border: 1px solid rgba(215, 188, 117, 0.45);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.book-card-coming .coming-label {
    font-size: 0.85rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: #d7bc75;
    margin-bottom: 0.5rem;
}

.book-card-coming .coming-year {
    font-size: 1.4rem;
    letter-spacing: 0.12em;
    color: #f4e7c1;
    opacity: 0.9;
}

.special-gallery {
    background: #050505;
    color: var(--text);
}

.special-inner {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.special-inner h2 {
    font-size: 1.6rem;
    letter-spacing: 0.18em;
    margin-bottom: 2rem;
}

/* =========================================
   COMING NEXT + PARTNERSHIP — Premium
   ========================================= */
.section-future {
    position: relative;
    padding: clamp(100px, 12vw, 180px) clamp(24px, 8vw, 160px);
    overflow: hidden;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.future-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 45% 60% at 50% 0%, rgba(215, 188, 117, 0.07), transparent),
        radial-gradient(ellipse 60% 40% at 80% 100%, rgba(215, 188, 117, 0.04), transparent),
        linear-gradient(180deg, #060606, #0a0a0a 50%, #060606);
    z-index: 0;
}

.future-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

/* --- Coming Next --- */
.future-next {
    margin-bottom: 0;
}

.future-eyebrow {
    font-size: 0.6rem;
    letter-spacing: 0.8em;
    text-transform: uppercase;
    color: var(--gold);
    margin: 0 0 1.5rem;
    opacity: 0.8;
}

.future-year {
    font-size: clamp(4rem, 10vw, 7rem);
    font-family: "Shippori Mincho", serif;
    font-weight: 400;
    letter-spacing: 0.2em;
    margin: 0;
    color: var(--text);
    line-height: 1;
    background: linear-gradient(180deg, rgba(245, 241, 230, 1), rgba(215, 188, 117, 0.6));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.future-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--gold), transparent);
    margin: 2rem auto;
}

.future-tagline {
    font-size: 0.95rem;
    line-height: 2.2;
    color: rgba(245, 241, 230, 0.45);
    margin: 0;
    letter-spacing: 0.04em;
}

/* --- Divider --- */
.future-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(50px, 6vw, 80px) 0;
}

.future-divider-dot {
    width: 6px;
    height: 6px;
    border: 1px solid var(--gold);
    border-radius: 50%;
    opacity: 0.5;
    position: relative;
}

.future-divider-dot::before,
.future-divider-dot::after {
    content: "";
    position: absolute;
    top: 50%;
    height: 1px;
    width: clamp(60px, 12vw, 140px);
    background: linear-gradient(to right, transparent, rgba(215, 188, 117, 0.2));
}

.future-divider-dot::before {
    right: 20px;
    background: linear-gradient(to left, transparent, rgba(215, 188, 117, 0.2));
}

.future-divider-dot::after {
    left: 20px;
}

/* --- Partnership --- */
.future-partnership {
    text-align: center;
}

.future-headline {
    font-size: clamp(1.6rem, 4vw, 2.6rem);
    font-family: "Shippori Mincho", serif;
    font-weight: 400;
    letter-spacing: 0.06em;
    line-height: 1.4;
    margin: 0 0 2.5rem;
    color: var(--text);
}

.future-cols {
    max-width: 700px;
    margin: 0 auto 3rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(24px, 4vw, 48px);
    text-align: left;
}

.future-text {
    font-size: 0.9rem;
    line-height: 2.2;
    color: rgba(245, 241, 230, 0.5);
    margin: 0;
}

.future-cta {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    padding: 18px 48px;
    border: 1px solid rgba(215, 188, 117, 0.4);
    color: var(--gold);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    font-size: 0.7rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.future-cta::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
    z-index: 0;
}

.future-cta:hover::before {
    transform: scaleX(1);
}

.future-cta-text,
.future-cta-arrow {
    position: relative;
    z-index: 1;
    transition: color 0.4s ease;
}

.future-cta:hover .future-cta-text,
.future-cta:hover .future-cta-arrow {
    color: #050505;
}

.future-cta-arrow {
    font-size: 1rem;
    transition: transform 0.3s ease, color 0.4s ease;
}

.future-cta:hover .future-cta-arrow {
    transform: translateX(4px);
}

/* --- Mobile --- */
@media (max-width: 768px) {
    .section-future {
        padding: clamp(70px, 16vw, 120px) 20px;
    }

    .future-cols {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .future-cta {
        width: 100%;
        justify-content: center;
    }
}

.gallery-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.gallery-btn {
    display: inline-block;
    background: transparent;
    border: 1px solid var(--gold-soft);
    color: var(--text);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-size: 11px;
    padding: 12px 28px;
    cursor: pointer;
    transition: background 0.3s ease, color 0.3s ease;
    text-decoration: none;
}

.gallery-btn:hover {
    background: var(--gold-soft);
    color: var(--background);
}

.pass-panel {
    display: none;
    flex-direction: column;
    gap: 12px;
    max-width: 300px;
    margin: 0 auto;
}

.pass-panel.visible {
    display: flex;
}

.pass-panel input {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text);
    padding: 10px 14px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

.pass-panel input:focus {
    outline: 1px solid var(--gold);
}

.pass-feedback {
    min-height: 1.5rem;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
}

.section-next {
    padding: 5rem 0 6rem;
    background-color: var(--background);
    color: var(--text);
}

.next-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: minmax(280px, 340px) minmax(280px, 1fr);
    gap: 48px;
    align-items: end;
}

.next-main {
    width: 100%;
    max-width: 340px;
    justify-self: center;
}

.next-cover {
    border-radius: 24px;
    border: 1px solid rgba(215, 188, 117, 0.55);
    padding: 3.5rem 2.5rem;
    background: radial-gradient(circle at 0% 0%, #2f2a1e, #050505 70%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.next-label {
    font-size: 0.85rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: #d7bc75;
    margin-bottom: 0.75rem;
}

.next-year {
    font-size: 2rem;
    letter-spacing: 0.18em;
}

.next-caption {
    margin-top: 1.2rem;
    font-size: 0.85rem;
    opacity: 0.7;
}

.next-side {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.next-block {
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    padding: 1.75rem 1.9rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.6));
}

.next-block h3 {
    font-size: 1rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-bottom: 0.6rem;
}

.next-block-sub {
    font-size: 0.85rem;
    line-height: 1.7;
    opacity: 0.75;
    margin-bottom: 1.2rem;
}

.btn-next {
    display: inline-block;
    padding: 0.45rem 1.8rem;
    font-size: 0.8rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    border-radius: 999px;
    border: 1px solid rgba(244, 231, 193, 0.7);
    text-decoration: none;
    color: #f4e7c1;
    transition: background 0.35s ease, color 0.35s ease, border-color 0.35s ease;
}

.btn-next:hover {
    background: #f4e7c1;
    color: #050505;
    border-color: #f4e7c1;
}

/* --- Sponsors --- */
.section-sponsors {
    padding: clamp(80px, 10vw, 120px) clamp(24px, 8vw, 160px);
    background: var(--background);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    text-align: center;
}

.sponsors-inner {
    max-width: 800px;
    margin: 0 auto;
}

.sponsors-label {
    font-size: 0.7rem;
    letter-spacing: 0.5em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0 0 2.5rem;
}

.sponsors-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.sponsor-card {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 120px;
    background: #fff;
    border-radius: 6px;
    padding: 16px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.sponsor-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(255, 255, 255, 0.08);
}

.sponsor-card img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

@media (max-width: 768px) {
    .sponsor-card {
        width: 100px;
        height: 100px;
        padding: 12px;
    }

    .sponsors-grid {
        gap: 14px;
    }
}

.creator-credit {
    background: var(--background);
    text-align: center;
    padding: 2rem 24px;
}

.creator-credit p {
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: none;
    color: rgba(245, 241, 230, 0.45);
    margin: 0;
    line-height: 1.6;
}

.creator-credit .instagram-btn {
    display: inline-flex;
    margin-top: 1rem;
    padding: 10px 26px;
    border: 1px solid rgba(245, 241, 230, 0.4);
    border-radius: 999px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-size: 11px;
    color: rgba(245, 241, 230, 0.85);
    text-decoration: none;
    transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.creator-credit .instagram-btn:hover {
    background: rgba(245, 241, 230, 0.85);
    color: #050505;
    border-color: rgba(245, 241, 230, 0.85);
}

@keyframes bookshelfEnter {
    0% {
        opacity: 0;
        transform: translateX(24px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}


.special-gallery {
    background: #040404;
}

.gallery-access {
    text-align: center;
    margin-bottom: 60px;
}

.pass-form {
    display: inline-flex;
    gap: 12px;
    margin: 20px 0;
}

.pass-form input {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text);
    padding: 12px 16px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.pass-form input:focus {
    outline: 1px solid var(--gold);
}

.pass-form button {
    border: 1px solid var(--gold);
    background: transparent;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    padding: 12px 24px;
    cursor: pointer;
}


.people-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 32px;
}

.people-grid figure {
    margin: 0;
}

.people-grid img {
    width: 100%;
    border-radius: 0;
    object-fit: cover;
}

.concept {
    background: var(--beige);
    color: #111;
}

.concept .wide-copy {
    color: #111;
}

.contact {
    text-align: center;
}

.site-footer {
    padding: 40px;
    text-align: center;
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--muted);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

[data-animate] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-animate].in-view {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1024px) {
    .menu-toggle {
        display: inline-flex;
    }

    .site-header nav {
        position: absolute;
        top: 72px;
        right: 24px;
        display: flex;
        flex-direction: column;
        background: rgba(0, 0, 0, 0.95);
        padding: 24px 32px;
        border-radius: 20px;
        gap: 14px;
        min-width: 220px;
        opacity: 0;
        pointer-events: none;
        transform: translateY(-10px);
        transition: opacity 0.3s ease, transform 0.3s ease;
    }

    .site-header nav.open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    section {
        padding: clamp(56px, 14vw, 88px) 20px;
    }

    .site-header {
        padding: 16px 20px;
    }

    .brand {
        font-size: 12px;
        letter-spacing: 0.3em;
    }

    .hero {
        grid-template-columns: 1fr;
        gap: 28px;
        padding-top: 110px;
        text-align: center;
    }

    .hero-content .label {
        letter-spacing: 0.3em;
    }

    .hero-content h1 {
        font-size: clamp(30px, 9vw, 38px);
        line-height: 1.35;
    }

    .hero-content .lead {
        font-size: 1rem;
        opacity: 0.9;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
        align-items: stretch;
    }

    .hero-cta .btn {
        width: 100%;
        text-align: center;
        justify-content: center;
    }

    .hero-visual img {
        width: min(360px, 80vw);
    }

    .bookshelf-scroll {
        padding: 1rem 12px 0;
        gap: 18px;
        scroll-padding-left: 12px;
    }

    .book-card {
        width: 68vw;
        max-width: 320px;
    }

    .book-cover {
        width: 100%;
        height: auto;
        aspect-ratio: 8 / 11;
    }

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

    .special-inner h2 {
        font-size: 1.3rem;
        line-height: 1.5;
    }

    .gallery-actions {
        flex-direction: column;
        width: 100%;
    }

    .gallery-btn {
        width: 100%;
        text-align: center;
    }

    .pass-panel {
        width: 100%;
    }

    .creator-credit {
        padding: 46px 20px;
    }

    .creator-credit .instagram-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .pass-form {
        flex-direction: column;
        width: 100%;
    }

    .pass-form input,
    .pass-form button {
        width: 100%;
    }

    .next-inner {
        grid-template-columns: 1fr;
    }

    section {
        padding: clamp(48px, 18vw, 70px) 18px;
    }
}
.hero-content h1,
.wide-copy h2,
.bookshelf-header h2,
.special-inner h2 {
    font-family: "Shippori Mincho", "Noto Sans JP", serif;
}

/* JSが動かない環境でも本文が見えるようにする（fail-open）。
   JSが動けば即座に no-js が外れ、通常どおりフェードインする。 */
.no-js [data-animate] {
    opacity: 1;
    transform: none;
}