body {
    padding-top: var(--header-height);
    box-sizing: border-box}


.hero-section {
    width: 100%;
    height: 60vh;
    min-height: 400px;
    background: var(--color-surface)}

#threejs-container {
    width: 100%;
    height: 100%}


.content-section {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    max-width: var(--content-max-width);
    margin: 0 auto}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-md)}


.book-meta {
    position: sticky;
    top: var(--space-md)}

.book-title {
    margin-bottom: var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm)}

.title-korean,
.title-english {
    display: block}

.title-english {
    font-style: italic;
    color: var(--color-muted)}

.body-charcoal .title-english {
    color: var(--color-muted-light)}

.body-charcoal .meta-item {
    border-bottom-color: var(--color-border-charcoal)}

.body-charcoal .book-description {
    border-color: var(--color-border-charcoal)}

.body-charcoal .purchase-link {
    background: var(--color-text-inverse);
    color: var(--color-bg-charcoal);
    border-color: var(--color-text-inverse)}

.body-charcoal .purchase-link:hover {
    background: var(--color-bg)}

.meta-item {
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-sm);
    border-bottom: var(--border)}

.meta-label {
    margin-bottom: 2px;
    display: block}

.meta-value {
    display: block}

.book-description {
    margin: var(--space-sm) 0;
    padding: var(--space-sm);
    border: var(--border)}

.purchase-link {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-text);
    color: var(--color-bg);
    text-decoration: none;
    border: var(--border);
    margin-top: var(--space-sm)}


.book-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md)}

.book-intro-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg)}

.book-intro h2 {
    margin-bottom: var(--space-xl)}

.book-intro p {
    margin-bottom: var(--space-sm)}

.book-intro-text {
    
}

.book-intro-text p {
    margin-bottom: var(--space-xl)}

.book-intro.english {
    margin-top: 0;
    padding-top: 0;
    border-top: none}


.guestbook-section {
    margin-top: var(--space-md)}

.guestbook-section h2 {
    margin-bottom: var(--space-sm)}

.guestbook-form {
    border: var(--border);
    padding: var(--space-sm);
    margin-bottom: var(--space-sm)}

.form-group {
    margin-bottom: var(--space-sm)}

.form-group label {
    display: block;
    margin-bottom: 2px}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-xs);
    border: var(--border);
    font-family: inherit}

.submit-btn {
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-text);
    color: var(--color-bg);
    border: var(--border);
    font-family: inherit;
    cursor: pointer}

.guestbook-messages {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm)}

.guestbook-message {
    padding: var(--space-sm);
    border: var(--border)}

.guestbook-message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-xs)}


@media (max-width: 768px) {
    .hero-section {
        height: 50vh;
        min-height: 300px}

    .content-section {
        padding: var(--space-sm)}

    .content-wrapper {
        grid-template-columns: 1fr;
        gap: var(--space-md)}

    .book-meta {
        position: static}

    .book-intro-columns {
        grid-template-columns: 1fr;
        gap: var(--space-xxl)}

    .book-intro.english {
        margin-top: var(--space-xxl);
        padding-top: var(--space-xxl);
        border-top: var(--border)}
}


body.archive-thesis-page {
    --thesis-field: #e6edf1;
    --thesis-paper: #f7f3ec;
    --thesis-ink: #15171a;
    --thesis-muted: rgba(21, 23, 26, 0.62);
    --thesis-rule: rgba(21, 23, 26, 0.14);
    --thesis-rule-strong: rgba(21, 23, 26, 0.24);
    --thesis-accent: #4f63b3;
    min-height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    background:
        linear-gradient(180deg, rgba(79, 99, 179, 0.05), transparent 16%),
        linear-gradient(180deg, #edf2f5 0%, #e8edf0 100%);
    color: var(--thesis-ink)}

body.archive-thesis-page:has(.flipbook-viewport) {
    margin: 0;
    display: block;
    padding: calc(var(--header-height) + var(--space-md)) var(--body-padding) var(--body-padding);
    overflow-y: auto;
    overflow-x: hidden;
    box-sizing: border-box;
    background:
        linear-gradient(90deg, rgba(21, 23, 26, 0.03) 1px, transparent 1px),
        linear-gradient(180deg, rgba(79, 99, 179, 0.05), transparent 16%),
        linear-gradient(180deg, #edf2f5 0%, #e8edf0 100%);
    background-size: 25% 100%, auto, auto}

.archive-thesis-page .top-nav {
    background: rgba(247, 243, 236, 0.82) !important;
    border-bottom: 1px solid var(--thesis-rule) !important;
    backdrop-filter: blur(8px)}

.archive-thesis-page .nav-content {
    max-width: 1520px;
    padding: 0 var(--body-padding);
    justify-content: flex-end}

.archive-thesis-page .nav-links {
    gap: var(--space-md)}

.archive-thesis-page .nav-link {
    color: var(--thesis-ink) !important;
    border: 0 !important;
    border-radius: 0 !important;
    background: transparent !important;
    padding: var(--space-4) 0 !important;
    font-size: 0.72rem;
    text-transform: uppercase}

.archive-thesis-page .nav-link:hover {
    color: var(--thesis-accent) !important}

.thesis-interface {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: clamp(32px, 6vw, 64px)}

.thesis-masthead,
.thesis-reader {
    position: relative;
    padding: clamp(18px, 2vw, 28px) 0}

.thesis-masthead {
    border-top: 1px solid var(--thesis-rule);
    border-bottom: 1px solid var(--thesis-rule)}

.thesis-masthead__topline,
.thesis-reader__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md)}

.thesis-masthead__meta,
.thesis-reader__label {
    font-size: 0.72rem;
    text-transform: uppercase;
    
    color: var(--thesis-muted)}

.thesis-masthead__meta--right {
    text-align: right}

.thesis-masthead__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.8fr);
    gap: clamp(24px, 4vw, 56px);
    margin-top: clamp(24px, 4vw, 44px);
    align-items: start}

.thesis-masthead__lead {
    padding-right: clamp(12px, 2vw, 28px);
    border-right: 1px solid var(--thesis-rule)}

.thesis-kicker {
    margin: 0;
    font-size: 0.76rem;
    text-transform: uppercase;
    
    color: var(--thesis-accent)}

.thesis-title {
    margin: 0;
    font-size: clamp(3rem, 8vw, 7rem)}

.thesis-title span {
    display: block}

.thesis-subtitle {
    margin: clamp(10px, 1.5vw, 18px) 0 0;
    font-size: clamp(1.1rem, 1.8vw, 1.7rem)}

.thesis-korean {
    margin: var(--space-sm) 0 0;
    max-width: 18ch;
    color: var(--thesis-muted);
    font-size: 1rem}

.thesis-abstract {
    margin: clamp(18px, 2vw, 24px) 0 0;
    max-width: 42ch;
    font-size: 0.95rem}

.thesis-abstract--kr {
    margin-top: var(--space-sm);
    color: var(--thesis-muted)}

.thesis-keywords {
    list-style: none;
    margin: clamp(18px, 2vw, 24px) 0 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs) var(--space-sm)}

.thesis-keywords li {
    position: relative;
    padding-right: var(--space-sm);
    font-size: 0.78rem;
    text-transform: lowercase;
    
    color: var(--thesis-muted)}

.thesis-keywords li:not(:last-child)::after {
    content: "/";
    position: absolute;
    right: 0;
    color: rgba(21, 23, 26, 0.32)}

.thesis-masthead__side {
    display: flex;
    flex-direction: column;
    gap: clamp(18px, 2vw, 24px)}

.thesis-meta-list {
    margin: 0;
    display: grid;
    gap: 0}

.thesis-meta-list div {
    display: grid;
    grid-template-columns: 6.1rem minmax(0, 1fr);
    gap: var(--space-sm);
    padding: 0.35rem 0;
    border-bottom: 1px solid var(--thesis-rule)}

.thesis-meta-list dt {
    font-size: 0.72rem;
    text-transform: uppercase;
    
    color: var(--thesis-muted)}

.thesis-meta-list dd {
    margin: 0}

.thesis-inline-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md)}

.thesis-inline-link {
    display: inline-flex;
    align-items: center;
    font-size: 0.76rem;
    text-transform: uppercase;
    
    border-bottom: 1px solid currentColor;
    transition: color 0.2s ease, border-color 0.2s ease}

.thesis-inline-link:hover {
    color: var(--thesis-accent)}

.thesis-preview {
    margin: 0;
    padding-top: var(--space-md);
    border-top: 1px solid var(--thesis-rule)}

.thesis-preview img {
    display: block;
    width: 100%;
    height: auto;
    background: rgba(255, 255, 255, 0.42)}

.thesis-preview figcaption {
    margin-top: var(--space-sm);
    font-size: 0.82rem;
    
    color: var(--thesis-muted)}

.thesis-reader__bar {
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--thesis-rule)}

.thesis-reader__status {
    display: flex;
    flex-direction: column;
    gap: 0.35rem}

.thesis-reader__status--page {
    align-items: flex-end}

.thesis-reader__value {
    font-size: clamp(1rem, 1.4vw, 1.18rem)}

.thesis-reader__value--page {
    color: var(--thesis-accent);
    font-variant-numeric: tabular-nums}

.thesis-reader__stage {
    margin-top: clamp(18px, 2.6vw, 30px);
    padding: clamp(12px, 2vw, 18px);
    border: 1px solid var(--thesis-rule);
    background: rgba(247, 243, 236, 0.46)}

.archive-thesis-page .flipbook-viewport {
    position: relative;
    width: 100%;
    height: min(72vh, 880px);
    min-height: 520px;
    overflow: hidden}

.archive-thesis-page .flipbook-viewport .container {
    position: relative;
    inset: auto;
    transform: none;
    width: 100%;
    height: 100%;
    display: grid;
    align-items: center;
    justify-content: center}

.archive-thesis-page .flipbook-viewport .page {
    background-color: #f8f4ec}

.archive-thesis-page .loading,
.archive-thesis-page .error {
    width: min(28rem, 80%);
    padding: 0.85rem 1rem;
    text-align: center;
    border: 1px solid var(--thesis-rule);
    background: rgba(247, 243, 236, 0.94);
    
    color: var(--thesis-ink)}

.archive-thesis-page .error {
    color: #7c2a2a}

.archive-thesis-page .nav-arrows {
    position: absolute;
    top: auto;
    bottom: clamp(16px, 2vw, 26px);
    transform: none;
    width: auto;
    height: auto;
    min-width: 0;
    min-height: 0;
    padding: 0.34rem 0.54rem;
    border-radius: 0;
    border: 1px solid var(--thesis-rule);
    background: rgba(247, 243, 236, 0.9);
    color: var(--thesis-ink);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.72rem;
    text-transform: uppercase;
    
    opacity: 1}

.archive-thesis-page .nav-arrows svg {
    width: 14px;
    height: 14px}

.archive-thesis-page .nav-arrows:hover {
    background: rgba(255, 255, 255, 0.96);
    color: var(--thesis-accent)}

.archive-thesis-page .nav-arrows:disabled {
    opacity: 0.35}

.archive-thesis-page .nav-arrows.prev {
    left: clamp(16px, 2vw, 26px)}

.archive-thesis-page .nav-arrows.next {
    right: clamp(16px, 2vw, 26px)}

.nav-arrows__text {
    white-space: nowrap}

.thesis-reader__note {
    margin: clamp(18px, 2vw, 22px) 0 0;
    max-width: 56rem;
    padding-top: var(--space-md);
    border-top: 1px solid var(--thesis-rule);
    font-size: 0.9rem}

.thesis-reader__note-label {
    display: inline-block;
    margin-right: var(--space-xs);
    font-size: 0.72rem;
    text-transform: uppercase;
    
    color: var(--thesis-accent)}

.thesis-reader__index {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md)}

.thesis-reader__index span {
    font-size: 0.72rem;
    text-transform: uppercase;
    
    color: var(--thesis-muted)}

@media (max-width: 1200px) {
    body.archive-thesis-page:has(.flipbook-viewport) {
        padding-left: var(--space-sm);
        padding-right: var(--space-sm)}

    .thesis-masthead__grid {
        gap: clamp(20px, 3vw, 32px)}
}

@media (max-width: 900px) {
    .archive-thesis-page .nav-content {
        padding: 0 var(--space-sm)}

    .thesis-reader__stage {
        padding-left: var(--space-md);
        padding-right: var(--space-md)}

    .thesis-masthead__grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg)}

    .thesis-masthead__lead {
        border-right: 0;
        border-bottom: 1px solid var(--thesis-rule);
        padding-right: 0;
        padding-bottom: var(--space-lg)}

    .thesis-reader__status--page {
        align-items: flex-start}

    .thesis-masthead__meta--right {
        text-align: left}
}

@media (max-width: 768px) {
    body.archive-thesis-page:has(.flipbook-viewport) {
        padding-top: calc(var(--header-height) + var(--space-sm))}

    .archive-thesis-page .top-nav {
        background: rgba(246, 242, 234, 0.9) !important}

    .thesis-masthead__topline,
    .thesis-reader__bar {
        flex-direction: column;
        align-items: flex-start}

    .thesis-title {
        font-size: clamp(2.9rem, 15vw, 5rem)}

    .archive-thesis-page .flipbook-viewport {
        height: 68vh;
        min-height: 420px}

    .archive-thesis-page .nav-arrows {
        padding: 0.32rem 0.45rem}

    .nav-arrows__text {
        display: none}
}


body.archive-receipt-page {
    --receipt-wall: #e3e1da;
    --receipt-paper: #f7f6f1;
    --receipt-paper-dark: #efede6;
    --receipt-ink: #111111;
    --receipt-rule: rgba(17, 17, 17, 0.24);
    --receipt-rule-strong: rgba(17, 17, 17, 0.44);
    margin: 0;
    min-height: 100vh;
    overflow-y: auto;
    background:
        radial-gradient(circle at 20% 16%, rgba(0, 0, 0, 0.03), transparent 14%),
        radial-gradient(circle at 80% 10%, rgba(0, 0, 0, 0.025), transparent 12%),
        linear-gradient(180deg, #ebe9e2 0%, var(--receipt-wall) 100%);
    color: var(--receipt-ink);
    font-family: "Courier New", Courier, monospace}

.receipt-wall {
    width: 100%;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: clamp(48px, 8vw, 96px) var(--space-md);
    box-sizing: border-box}

.receipt-strip {
    position: relative;
    width: min(100%, 31rem);
    padding: 1.15rem 1rem 2rem;
    background:
        linear-gradient(180deg, rgba(0, 0, 0, 0.015), transparent 16%),
        repeating-linear-gradient(180deg, rgba(0, 0, 0, 0.02), rgba(0, 0, 0, 0.02) 1px, transparent 1px, transparent 3px),
        linear-gradient(180deg, var(--receipt-paper) 0%, var(--receipt-paper-dark) 100%);
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow:
        0 18px 34px rgba(0, 0, 0, 0.12),
        0 4px 8px rgba(0, 0, 0, 0.06)}

.receipt-strip::before {
    content: "";
    position: absolute;
    top: -12px;
    left: 50%;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: #111;
    transform: translateX(-50%);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.35)}

.receipt-strip::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(90deg, transparent 0, transparent calc(100% - 1px), rgba(0, 0, 0, 0.03) calc(100% - 1px)),
        radial-gradient(circle at 18% 24%, rgba(0, 0, 0, 0.018), transparent 14%),
        radial-gradient(circle at 68% 72%, rgba(0, 0, 0, 0.018), transparent 16%);
    mix-blend-mode: multiply;
    opacity: 0.8}

.receipt-header {
    display: flex;
    flex-direction: column;
    gap: 0.85rem}

.receipt-header__store,
.receipt-section__title,
.receipt-footer__summary,
.receipt-footer__stamp {
    font-size: 0.72rem;
    
    text-transform: uppercase}

.receipt-header__store {
    margin: 0}

.receipt-header__title {
    margin: 0;
    font-size: clamp(2.15rem, 8vw, 3.4rem);
    
    
    font-weight: 700}

.receipt-header__subtitle {
    margin: 0;
    font-size: 0.9rem}

.receipt-meta,
.receipt-table {
    margin: 0;
    display: grid;
    gap: 0}

.receipt-meta div,
.receipt-table div {
    display: grid;
    grid-template-columns: 7.1rem minmax(0, 1fr);
    gap: 0.7rem;
    padding: 0.22rem 0}

.receipt-meta dt,
.receipt-table dt {
    text-transform: uppercase}

.receipt-meta dd,
.receipt-table dd {
    margin: 0;
    text-align: right}

.receipt-divider {
    margin: 1rem 0;
    font-size: 0.74rem;
    
    white-space: nowrap;
    overflow: hidden}

.receipt-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem}

.receipt-section__title {
    margin: 0}

.receipt-copy {
    margin: 0;
    font-size: 0.88rem}

.receipt-copy--kr {
    color: rgba(17, 17, 17, 0.72)}

.receipt-list,
.receipt-notes {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.45rem}

.receipt-list__item,
.receipt-notes li {
    padding: 0.28rem 0;
    border-bottom: 1px dashed var(--receipt-rule)}

.receipt-list__item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem}

.receipt-list__label {
    display: block}

.receipt-link {
    flex-shrink: 0;
    text-transform: uppercase;
    text-decoration: underline}

.receipt-link:hover {
    opacity: 0.65}

.receipt-preview {
    margin: 0.35rem 0 0;
    display: flex;
    flex-direction: column;
    gap: 0.55rem}

.receipt-preview img {
    width: 100%;
    max-width: 13rem;
    align-self: flex-start;
    filter: grayscale(1) contrast(1.18) brightness(1.04);
    image-rendering: pixelated;
    mix-blend-mode: multiply}

.receipt-preview figcaption {
    margin: 0;
    font-size: 0.74rem;
    
    text-transform: uppercase}

.receipt-footer {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem}

.receipt-footer__summary,
.receipt-footer__message,
.receipt-footer__stamp {
    margin: 0}

.receipt-footer__message {
    font-size: 1rem;
    font-weight: 700}

.receipt-footer__stamp {
    align-self: flex-start;
    padding: 0.22rem 0.4rem;
    border: 1px solid var(--receipt-rule-strong);
    transform: rotate(-2deg)}

@media (max-width: 768px) {
    .receipt-wall {
        padding: clamp(28px, 7vw, 44px) 0.85rem}

    .receipt-strip {
        width: 100%;
        padding: 1rem 0.9rem 1.6rem}

    .receipt-meta div,
    .receipt-table div {
        grid-template-columns: 6.2rem minmax(0, 1fr);
        gap: 0.55rem}

    .receipt-meta dd,
    .receipt-table dd {
        text-align: left}

    .receipt-list__item {
        flex-direction: column;
        gap: 0.2rem}
}


body.archive-basic-page {
    --basic-text: #000000;
    --basic-muted: #000000;
    --basic-line: transparent;
    --basic-link: #0000ee;
    --basic-link-visited: #0000ee;
    --fs-base: 18px;
    --fs-footer: 12px;
    margin: 0;
    min-height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
    background: #ececec;
    color: var(--basic-text);
    font-family: "sanjak-regular", "vendetta", sans-serif;
    font-size: var(--fs-base);
    font-weight: 400}

.archive-basic-page b,
.archive-basic-page strong {
    font-weight: 400}

.archive-basic-page .top-nav {
    background: transparent !important;
    border-bottom: 0 !important;
    backdrop-filter: none}

.archive-basic-page .nav-content {
    max-width: 1280px;
    padding: 0 16px;
    justify-content: flex-start}

.archive-basic-page .nav-links {
    gap: 12px}

.archive-basic-page .nav-link {
    padding: 0 0 2px !important;
    border: 0 !important;
    border-radius: 0 !important;
    background: none !important;
    text-decoration: underline !important;
    color: var(--basic-link) !important}

.archive-basic-page .nav-link:hover {
    background: none !important;
    color: var(--basic-link) !important}

.archive-basic-page a {
    color: var(--basic-link)}

.archive-basic-page a:visited {
    color: var(--basic-link-visited)}

.basic-site {
    width: min(100%, 1280px);
    min-height: calc(100vh - var(--header-height));
    margin: 0 auto;
    padding: 8px 16px 12px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 10px}

.basic-site__header {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(320px, 0.9fr);
    gap: 10px;
    align-items: start;
    position: relative;
    z-index: 60;
    margin-bottom: 1rem;
    transition: opacity 0.28s ease}

.basic-site__intro,
.basic-site__panel,
.basic-site__viewer-bar,
.basic-site__viewer,
.basic-site__footer {
    border: 0;
    background: transparent}

.basic-site__eyebrow,
.basic-site__subtitle,
.basic-site__summary,
.basic-site__footer p {
    margin: 0}

.basic-site__intro {
    padding: 0}

.basic-site__eyebrow {
    font-size: var(--fs-base);
    
    text-transform: uppercase;
    
    color: var(--basic-muted)}

.basic-site__title {
    margin: 6px 0 4px;
    font-size: var(--fs-base);
    font-weight: 400;
    color: var(--basic-text)}

.basic-site__subtitle {
    font-size: var(--fs-base);
    color: var(--basic-muted)}

.basic-site__summary {
    margin-top: 6px;
    max-width: 60rem;
    font-size: var(--fs-base);
    color: var(--basic-text)}

.basic-site__summary--ko {
    color: var(--basic-muted)}

.basic-site__panel {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 8px;
    padding: 0}

.basic-site__meta {
    margin: 0;
    display: grid;
    gap: 0}

.basic-site__meta div {
    display: grid;
    grid-template-columns: 6.8rem minmax(0, 1fr);
    gap: 12px;
    padding: 3px 0;
    border-bottom: 0}

.basic-site__meta dt {
    font-size: var(--fs-base);
    
    text-transform: uppercase;
    color: var(--basic-muted)}

.basic-site__meta dd {
    margin: 0;
    font-size: var(--fs-base);
    color: var(--basic-text)}

.basic-site__links {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 12px;
    align-items: center}

.basic-site__links a {
    text-decoration: underline;
    text-underline-offset: 0.12em}

.basic-site__viewer-bar {
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 60;
    transition: opacity 0.28s ease}

.basic-site__viewer-status {
    margin: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: var(--fs-base);
    color: var(--basic-muted)}

.basic-site__viewer-controls {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: var(--fs-base)}

.basic-site__viewer-controls #pageIndicator {
    color: var(--basic-text);
    font-variant-numeric: tabular-nums}

.basic-site__section {
    position: relative}

.basic-site__section--abstract {
    margin-top: 0.5rem;
    padding-top: 0;
    border-top: 0;
    z-index: 60;
    transition: opacity 0.28s ease}

.basic-site__intro-columns {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(18px, 3vw, 36px);
    align-items: start}

.basic-site__abstract {
    margin: 0;
    font-size: var(--fs-base);
    color: var(--basic-text)}

.basic-site__abstract--ko {
    color: var(--basic-muted)}

.basic-site__title:lang(en),
.basic-site__subtitle:lang(en),
.basic-site__summary:lang(en),
.basic-site__abstract:lang(en) {
    
}

.basic-site__title:lang(ko),
.basic-site__subtitle:lang(ko),
.basic-site__summary:lang(ko),
.basic-site__abstract:lang(ko) {
    
}

.basic-site__abstract p {
    margin: 0 0 0.9em}

.basic-site__abstract p:last-child {
    margin-bottom: 0}

.basic-site__section--viewer {
    margin-top: 1rem;
    height: 100vh;
    min-height: 100vh}

.basic-site__viewer-shell {
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    width: min(96vw, 1560px);
    height: min(88vh, 1080px);
    display: block}

.basic-site__viewer {
    width: 100%;
    height: 100%;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none}

.archive-basic-page .flipbook-viewport {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 0;
    overflow: hidden;
    --flipbook-render-width: 0px}

.archive-basic-page .flipbook-viewport .container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center}

.archive-basic-page .flipbook {
    margin: 0 auto}

.archive-basic-page .flipbook-viewport .page {
    background: #fff;
    background-repeat: no-repeat;
    background-size: 100% 100%}

.archive-basic-page .flipbook .page {
    box-shadow: 0 0 22px rgba(0, 0, 0, 0.14)}

.archive-basic-page .flipbook-viewport .shadow {
    transition: box-shadow 0.5s;
    box-shadow: 0 0 28px rgba(0, 0, 0, 0.18)}

.archive-basic-page .loading,
.archive-basic-page .error {
    width: min(30rem, 84%);
    padding: 12px 14px;
    background: #fff;
    text-align: center;
    font-size: var(--fs-base)}

.archive-basic-page .loading {
    color: var(--basic-text)}

.archive-basic-page .error {
    color: var(--basic-text)}

.archive-basic-page .nav-arrows {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--basic-link);
    cursor: pointer;
    font: inherit;
    font-size: var(--fs-base);
    
    text-decoration: underline}

.archive-basic-page .nav-arrows:hover {
    background: transparent;
    color: var(--basic-link)}

.archive-basic-page .nav-arrows:disabled {
    opacity: 0.4;
    cursor: default}

.basic-site__viewer-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--basic-link);
    cursor: pointer;
    font: inherit;
    font-size: var(--fs-base);
    
    text-decoration: underline;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease}

.basic-site__footer {
    position: fixed;
    left: 50%;
    bottom: 8px;
    transform: translateX(-50%);
    z-index: 60;
    width: min(calc(100vw - 32px), 1280px);
    margin-top: 0;
    padding: 0;
    transition: opacity 0.28s ease}

.basic-site__footer p {
    font-size: var(--fs-footer);
    
    color: var(--basic-muted)}

@media (max-width: 768px) {
    .archive-basic-page .nav-content {
        padding: 0 12px}

    .basic-site {
        padding: 6px 12px 10px;
        gap: 8px}

    .basic-site__header {
        grid-template-columns: 1fr;
        gap: 8px;
        margin-bottom: 1rem}

    .basic-site__intro,
    .basic-site__panel {
        padding: 0}

    .basic-site__title {
        font-size: var(--fs-base)}

    .basic-site__subtitle,
    .basic-site__meta dd,
    .basic-site__links {
        font-size: var(--fs-base)}

    .basic-site__summary {
        display: none}

    .basic-site__intro-columns {
        grid-template-columns: 1fr;
        gap: 1.25rem}

    .basic-site__abstract--en {
        padding-top: 1rem;
        border-top: 0}

    .basic-site__meta div {
        grid-template-columns: 5.8rem minmax(0, 1fr);
        gap: 10px;
        padding: 5px 0}

    .basic-site__section--viewer {
        margin-top: 1rem;
        height: 100vh;
        min-height: 100vh}

    .basic-site__viewer-shell {
        width: calc(100vw - 12px);
        height: min(64vh, 700px);
        top: 51%}

    .basic-site__viewer {
        padding: 0}

    .archive-basic-page .flipbook-viewport {
        min-height: 0}

    .archive-basic-page .nav-arrows {
        font-size: var(--fs-base)}

    .basic-site__footer p {
        font-size: var(--fs-footer)}
}

/* PDF.js viewer: centered stage, no legacy image flipbook */
body.archive-basic-page.use-pdf-viewer .basic-site__viewer-shell {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    transform: none;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 10;
    transition: z-index 0s linear 0.28s}

body.archive-basic-page.use-pdf-viewer .basic-site__viewer {
    width: 100%;
    height: 100%;
    max-width: min(98vw, 1360px);
    max-height: min(88vh, 900px);
    pointer-events: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.94;
    transform: translateY(8px);
    transition: opacity 0.28s ease, transform 0.28s ease}

body.archive-basic-page.use-pdf-viewer .flipbook-viewport {
    overflow: hidden;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center}

body.archive-basic-page.use-pdf-viewer .flipbook-viewport .container {
    position: relative;
    inset: auto;
    width: 100%;
    height: 100%;
    max-height: min(88vh, 900px);
    margin: 0;
    transform: none;
    display: flex;
    align-items: center;
    justify-content: center}

body.archive-basic-page.use-pdf-viewer .basic-site__pdf-stage {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: min(72vh, 760px);
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    padding: 0;
    cursor: pointer}

body.archive-basic-page.use-pdf-viewer .basic-site__pdf-spread {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: 0;
    width: 100%;
    height: 100%;
    min-height: 0}

body.archive-basic-page.use-pdf-viewer .basic-site__pdf-spread--single {
    justify-content: center}

body.archive-basic-page.use-pdf-viewer .basic-site__pdf-spread--single .basic-site__pdf-canvas--right {
    display: none}

body.archive-basic-page.use-pdf-viewer .basic-site__pdf-canvas {
    display: block;
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    background: #fff;
    box-shadow: 0 0 22px rgba(0, 0, 0, 0.14);
    user-select: none}

body.archive-basic-page.reader-focused .basic-site__viewer-shell {
    z-index: 80;
    transition-delay: 0s}

body.archive-basic-page.reader-focused .basic-site__viewer {
    opacity: 1;
    transform: translateY(0)}

body.archive-basic-page.reader-focused .basic-site__viewer-bar {
    z-index: 90}

body.archive-basic-page.reader-focused .basic-site__viewer-close {
    opacity: 1;
    visibility: visible;
    pointer-events: auto}

body.archive-basic-page.use-pdf-viewer .loading,
body.archive-basic-page.use-pdf-viewer .error {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 100;
    pointer-events: none}

@media (max-width: 768px) {
    body.archive-basic-page.use-pdf-viewer .basic-site__viewer {
        max-width: calc(100vw - 12px);
        max-height: min(64vh, 700px)}

    body.archive-basic-page.use-pdf-viewer .basic-site__pdf-stage {
        min-height: min(58vh, 520px)}
}