/* -----------------------------------------
   전체 구조
----------------------------------------- */

body {
    /* background: #f6f4ef; */
    background: #f1f1f1;
    color: #111;
}

body::after {
    content: "";
    position: fixed;
    inset: 0;

    background-image:
        repeating-radial-gradient(
            circle at 0 0,
            rgba(0,0,0,0.015) 0px,
            rgba(0,0,0,0.015) 1px,
            transparent 1px,
            transparent 2px
        );

    pointer-events: none;
    z-index: 999;
}

.page-wrapper {
    width: 100%;
    position: relative;
    z-index: 1;
}

.layout {
    display: flex;
    min-height: 100vh;
}



/* -----------------------------------------
   trail-layer
   스크롤할 때 실제 흔적처럼 잠깐 남는 레이어
----------------------------------------- */

.trail-layer {
    position: fixed;
    inset: 0;
    z-index: 999;
    pointer-events: none;
    overflow: hidden;
}

.trail-fragment {
    position: absolute;
    max-width: 42rem;

    /* 일단 보이게 조금 더 진하게 */
    color: rgba(17, 17, 17, 1);

    font-size: 1rem;
    line-height: 1.68;
    letter-spacing: 0;
    white-space: normal;

    user-select: none;
    pointer-events: none;

    /* 처음엔 blur 거의 없애기 */
    filter: blur(0.05px);

    animation: trailFade 2600ms ease-out forwards;
    transform: translateY(0) rotate(var(--trail-rotate, 0deg));
    transform-origin: left top;
}

@keyframes trailFade {
    0% {
        opacity: 0.35;
        transform: translateY(0) rotate(var(--trail-rotate, 0deg));
    }
    100% {
        opacity: 0;
        transform: translateY(var(--trail-shift-y, 14px)) rotate(var(--trail-rotate, 0deg));
    }
}

/* -----------------------------------------
   왼쪽 목차
----------------------------------------- */

.sidebar {
    width: 220px;
    height: 100vh;
    padding: 2rem 1.6rem;
    position: sticky;
    top: 0;

    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.35rem;

    align-self: flex-start;
    /* background: rgba(246,244,239,0.92); */
    background:#f1f1f1;
}

.sidebar a {
    display: block;
    text-decoration: none;
    color: #111;
    font-size: 1rem;
    line-height: 1.2;
     padding: 0.12rem 0 0.12rem 1.4rem;
    text-indent: -1.1rem;
    opacity: 0.35;
    transition: opacity 0.2s ease;
}

.sidebar a::before {
    content: attr(data-number) ". ";
    color: inherit;
}

.sidebar a:hover {
    opacity: 0.6;
}

.sidebar a.active {
    opacity: 1;
    text-decoration: underline;
}

/* -----------------------------------------
   본문 영역
----------------------------------------- */

.split-content {
    flex: 1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    height: 100vh;
}

.text-panel,
.visual-panel {
    height: 100vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.text-panel {
    padding: 4.5rem 4.5rem 18rem 4.5rem;
    border-right: none;
}

.visual-panel {
    padding: 4.5rem 4.5rem 18rem 4.5rem;
    background: transparent;
}

.measure {
    max-width: 31rem;
    width: 100%;
    padding: 0 1.5rem;
}

/* -----------------------------------------
   챕터 번호
----------------------------------------- */

.chapter {
    position: relative;
    padding-top: 2.8rem;
   scroll-margin-top: 1rem;
}

.chapter::before {
    content: attr(data-number);
    position: static;
    top: 0;
    left: 0;

    font-size: 2rem;
    font-weight: 500;
    line-height: 1;
    letter-spacing: -0.02em;
    color: #111;

    pointer-events: none;
    user-select: none;
}



/* -----------------------------------------
   타이포그래피
----------------------------------------- */

h3 {
    margin-top: 0;
    margin-bottom: 1.4rem;
    font-size: 1.2rem;
    line-height: 1.48;
    font-style: oblique;
    letter-spacing: -0.005em;
    font-weight: normal;
}

p {
    margin-top: 0;
    margin-bottom: 1.05rem;
    font-size: 1rem;
    line-height: 1.5;
    max-width: 53ch;
}

.chapter > p:first-of-type {
    max-width: 53ch;
}

.quote {
    padding-left: 1.4rem;
    max-width: 50ch;
    margin-bottom: 1.05rem;
    line-height: 1.5;
}

em {
    font-style: italic;
}

.tracking {
    letter-spacing: -0.25rem;
}

.kerning {
    letter-spacing: -1rem;
}

#conclusion p {
    margin-bottom: 0.55rem;
    line-height: 1.38;
}

#conclusion {
    margin-bottom: 100vh;
}

/* -----------------------------------------
   모바일
----------------------------------------- */
.mobile-view-toggle {
    display: none;
}

@media (max-width: 900px) {
    :root {
        --mobile-toggle-h: 2.55rem;
        --mobile-toc-h: 2.9rem;
        --mobile-top-ui: calc(var(--mobile-toggle-h) + var(--mobile-toc-h));
    }

    html,
    body {
        height: auto;
        overflow-x: hidden;
        overflow-y: auto;
    }

    .layout {
        min-height: 100vh;
        display: block;
        overflow: visible;
        padding-left: 0rem;
        padding-right: 0rem;
    }

    .mobile-view-toggle {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: var(--mobile-toggle-h);
        z-index: 2100;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.6rem;
        padding: 0 1rem;
        background: #f1f1f1;
        box-sizing: border-box;
    }

    .mobile-toggle-btn {
        appearance: none;
        border: none;
        background: none;
        padding: 0;
        font: inherit;
        color: #111;
        line-height: 1.2;
        opacity: 0.4;
        text-decoration: none;
        cursor: pointer;
    }

    .mobile-toggle-btn.active {
        opacity: 1;
        text-decoration: underline;
    }

    .sidebar-inner {
        height: var(--mobile-top-ui);
    }

.sidebar {
    position: fixed;
    top: var(--mobile-toggle-h);
    left: 0;
    width: 100%;
    height: var(--mobile-toc-h);

    padding: 0 50vw 0 50vw;
    z-index: 2000;
    background: #f1f1f1;
    border-bottom: none;

    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 0.9rem;

    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    scrollbar-width: none;
    box-sizing: border-box;
}

.sidebar::before,
.sidebar::after {
    content: none;
}

.sidebar a {
    display: inline-block;
    flex: 0 0 auto;
    white-space: nowrap;
    line-height: 1.2;
    padding: 0.12rem 0;
    text-indent: 0;
}

    .split-content {
        display: block;
        height: auto;
        padding-top: var(--mobile-top-ui);
    }

    body:has(.split-content[data-mobile-view="visual"]) .sidebar-inner,
    body:has(.split-content[data-mobile-view="visual"]) .sidebar {
        display: none;
    }

    body:has(.split-content[data-mobile-view="visual"]) .split-content {
        padding-top: var(--mobile-toggle-h);
    }

    .text-panel,
    .visual-panel {
        height: auto;
        overflow: visible;
    }

    .text-panel {
        padding: 0.2rem 1.5rem 5rem 1.5rem;
        border-right: none;
        padding-bottom: 80vh;
    }

    .visual-panel {
        padding: 0.6rem 1.5rem 5rem 1.5rem;
        background: transparent;
    }

    .visual-panel-inner {
        max-width: 31rem;
        margin: 0 auto;
        gap: 1.5rem;
    }

    .measure {
        max-width: 31rem;
        margin: 0 auto 5.5rem auto;
    }

    .chapter {
        padding-top: 4rem;
        scroll-margin-top: calc(var(--mobile-top-ui) + 3rem + 5.5rem);
    }

   .chapter::before {
    position: relative;
    top: 0;
    display: block;
    margin-bottom: 0.8rem;
}

    h3 {
        font-size: 1.1rem;
        margin-bottom: 1.1rem;
    }

    p {
        line-height: 1.47;
        margin-bottom: 0.95rem;
    }

    .split-content[data-mobile-view="text"] .visual-panel {
        display: none;
    }

    .split-content[data-mobile-view="visual"] .text-panel {
        display: none;
    }

    body::after {
        display: none;
    }

    .trail-layer {
        pointer-events: none;
    }

    .page-wrapper::before,
    .page-wrapper::after,
    .visual-slide-inner::after {
        display: none;
    }
}


.term-trigger {
    appearance: none;
    border: none;
    background: none;
    padding: 0;
    margin: 0;
    font: inherit;
    color: inherit;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 0.12em;
}

.term-trigger:hover {
    opacity: 0.6;
}

.term-popup-overlay[hidden] {
    display: none;
}

.term-popup-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    pointer-events: none;
}

.term-popup {
    position: absolute;
    top: 6rem;
    left: 6rem;
    pointer-events: auto;
    cursor: grab;
    touch-action: none;
    transform-origin: top left;
    user-select: none;
}

.term-popup.dragging {
    cursor: grabbing;
}

.term-popup.resizing {
    cursor: nwse-resize;
}

.term-popup-scale {
    width: min(420px, 82vw);
    padding: 1rem;
    box-sizing: border-box;
    background: rgba(246, 244, 239, 0.97);
    border: 1px solid rgba(17, 17, 17, 0.1);
    box-shadow: 0 0.4rem 1.2rem rgba(0, 0, 0, 0.06);
    transform-origin: top left;
    will-change: transform;
    transform: scale(1);
}

/* 오른쪽 아래 resize handle */
.term-popup-scale {
    position: relative;
    width: min(420px, 82vw);
    padding: 1rem;
    box-sizing: border-box;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(17, 17, 17, 0.12);
    box-shadow: 0 0.5rem 2rem rgba(0, 0, 0, 0.08);
    transform-origin: top left;
    will-change: transform;
    transform: scale(1);
}

.term-popup-scale::after {
    content: "";
    position: absolute;
    right: 8px;
    bottom: 8px;
    width: 22px;
    height: 22px;
    pointer-events: none;
    background:
      linear-gradient(
        135deg,
        transparent 0 45%,
        rgba(17,17,17,0.28) 45% 50%,
        transparent 50% 60%,
        rgba(17,17,17,0.28) 60% 65%,
        transparent 65%
      );
}

.term-popup-content {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.term-popup-image-wrapper {
    position: relative;
}

.term-popup-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
}

.term-popup-close {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 10;
    border: none;
    background: none;
    padding: 0;
    font: inherit;
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
    color: #111;
    opacity: 0.65;
    transition: opacity 0.2s ease;
    text-shadow: 0 0 6px rgba(0, 0, 0, 0.18);
}

.term-popup-close:hover {
    opacity: 1;
}

.term-popup-content h4 {
    margin: 0;
    font-size: 1rem;
    font-weight: 500;
}

.term-popup-source {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.4;
}

.term-popup-source a {
    color: inherit;
}

@media (max-width: 900px) {
    .term-popup-scale {
        width: min(360px, 86vw);
        padding: 0.9rem;
    }
}

/* -----------------------------------------
   모바일 목차가 active 항목 따라 움직이도록
----------------------------------------- */

@media (max-width: 900px) {
    .sidebar {
        scroll-behavior: smooth;
        -webkit-overflow-scrolling: touch;
    }

    .sidebar a {
        position: relative;
        padding-right: 0.2rem;
    }
}

/* -----------------------------------------
   hover preview
----------------------------------------- */

/* -----------------------------------------
   desktop hover panel
----------------------------------------- */

.term-hover-preview[hidden] {
    display: none;
}

.term-hover-preview {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 900;
    pointer-events: auto;
    cursor: grab;
    touch-action: none;
    user-select: none;
}

.term-hover-preview.dragging {
    cursor: grabbing;
}

.term-hover-preview.resizing {
    cursor: nwse-resize;
}

.term-hover-preview-scale {
    position: relative;
    width: min(420px, 30vw);
    padding: 1rem;
    box-sizing: border-box;
    background: rgba(246, 244, 239, 0.97);
    border: 1px solid rgba(17, 17, 17, 0.1);
    box-shadow: 0 0.4rem 1.2rem rgba(0, 0, 0, 0.06);
    transform-origin: top right;
    will-change: transform;
    transform: scale(1);
}

.term-hover-preview-scale::after {
    content: "";
    position: absolute;
    right: 8px;
    bottom: 8px;
    width: 22px;
    height: 22px;
    pointer-events: none;
    background:
      linear-gradient(
        135deg,
        transparent 0 45%,
        rgba(17,17,17,0.28) 45% 50%,
        transparent 50% 60%,
        rgba(17,17,17,0.28) 60% 65%,
        transparent 65%
      );
}

.term-hover-preview-content {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.term-hover-preview-image-wrapper {
    position: relative;
}

.term-hover-preview-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
}

.term-hover-preview-close {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 10;
    border: none;
    background: none;
    padding: 0;
    font: inherit;
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
    color: #111;
    opacity: 0.65;
    transition: opacity 0.2s ease;
}

.term-hover-preview-close:hover {
    opacity: 1;
}

.term-hover-preview-text {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.term-hover-preview-text p {
    margin: 0;
    line-height: 1.25;
}

#termHoverPreviewTitle {
    font-size: 0.95rem;
}

#termHoverPreviewSource {
    font-size: 0.82rem;
    opacity: 0.65;
}

/* 데스크탑에서만 hover로 열림 */
@media (hover: hover) and (pointer: fine) {
    .term-trigger:hover {
        opacity: 0.6;
    }
}

/* 화면이 좁아지면 desktop hover panel 숨김 */
@media (max-width: 900px) {
    .term-hover-preview {
        display: none !important;
    }
}

.term-trigger {
    -webkit-tap-highlight-color: rgba(0,0,0,0);
    touch-action: manipulation;
}

.term-popup-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    pointer-events: none;
}

.term-popup {
    pointer-events: auto;
}

@media (max-width: 900px) {
    .term-popup {
        max-width: none;
    }

    .term-popup-scale {
        width: min(360px, calc(100vw - 2rem));
    }
}

.term-popup-images,
.term-hover-preview-images {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.term-popup-images img,
.term-hover-preview-images img {
    width: 100%;
    height: auto;
    display: block;
}

.term-popup-image-wrapper,
.term-hover-preview-image-wrapper {
    position: relative;
}

.term-hover-preview-images {

  display: flex;
  flex-direction: column;
  gap: 0.7rem;

}

.term-hover-preview-images img {

  width: 100%;
  height: auto;
  display: block;

}

.term-hover-preview {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 900;
    pointer-events: auto;
    cursor: grab;
    touch-action: none;
    user-select: none;
}

.term-hover-preview-scale {
    position: relative;
    width: min(420px, 30vw);
    padding: 1rem;
    box-sizing: border-box;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(17, 17, 17, 0.12);
    box-shadow: 0 0.5rem 2rem rgba(0, 0, 0, 0.08);
    transform-origin: top right;
    will-change: transform;
    transform: scale(1);
}

.term-hover-preview-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
}

.term-hover-preview-image-wrapper {
    position: relative;
}

.term-hover-preview-index {
    position: absolute;
    left: 8px;
    bottom: 8px;
    z-index: 11;

    margin: 0;
    padding: 0.18rem 0.38rem 0.14rem 0.38rem;

    background: rgba(255, 255, 255, 0.9);
    color: #111;

    font-size: 0.78rem;
    line-height: 1;
    border: 1px solid rgba(17, 17, 17, 0.12);
}

.visual-panel-inner {
    width: 100%;
    max-width: 44rem;
    margin: 0 auto;

    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
}

.visual-essay-item {
    break-inside: avoid;
    -webkit-column-break-inside: avoid;
    margin: 0 0 1.2rem 0;
    display: inline-block;
    width: 100%;
}

.visual-essay-item img {
    width: 85%;
    height: 260px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
    background: transparent;
    box-shadow: 0 0.25rem 0.8rem rgba(0, 0, 0, 0.06);
}


.visual-essay-item figcaption {
    margin-top: 0.35rem;
    font-size: 0.78rem;
    line-height: 1.2;
    opacity: 0.65;
}

.visual-panel-inner {
    width: 100%;
    max-width: 44rem;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
}

.visual-essay-item {
    width: 100%;
    margin: 0 0 1.2rem 0;
    text-align: left;
}

.visual-essay-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    margin: 0 auto;
    background: transparent;
    box-shadow: 0 0.25rem 0.8rem rgba(0, 0, 0, 0.06);
}


.visual-essay-item figcaption {
    margin-top: 0.35rem;
    font-size: 0.78rem;
    line-height: 1.2;
    opacity: 0.65;
}

.underline {
  text-decoration: underline;
  text-underline-offset: 0.12em;
  /* color: rgb(0, 6, 123); */
}

/* -----------------------------------------
   visual panel: featured + slider
----------------------------------------- */

.visual-panel-composed {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 44rem;
    margin: 0 auto;
}

.visual-featured {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.2rem;
    align-items: start;
}

.visual-featured .visual-essay-item,
.visual-slide {
    width: 100%;
    margin: 0;
    text-align: left;
}

.visual-slide img,
.visual-main-item img,
.image-slide img,
.visual-featured img {

    width: auto;
    max-width: 100%;
    height: auto;

    display: block;
    margin: 0 auto;

    background: transparent;

    /* 바깥 종이 존재감 */
    box-shadow:

        0 0.18rem 0.55rem rgba(0,0,0,0.045),

        /* top / left = 들린 면 */
        inset 0 1px 0 rgba(255,255,255,0.34),
        inset 1px 0 0 rgba(255,255,255,0.24),

        /* bottom / right = 눌린 면 */
        inset 0 -1px 0 rgba(0,0,0,0.075),
        inset -1px 0 0 rgba(0,0,0,0.055);
}

.visual-featured figcaption,
.visual-slide figcaption {
    margin-top: 0.35rem;
    font-size: 0.78rem;
    line-height: 1.2;
    opacity: 0.65;
}

.visual-slider {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 0.9rem;
    align-items: center;
}

.visual-slider-viewport {
    overflow: hidden;
    width: 100%;
}

.visual-slider-track {
    display: flex;
    transition: transform 0.35s ease;
    will-change: transform;
}

.visual-slide {
    flex: 0 0 100%;
}

.visual-slider-arrow {
    appearance: none;
    border: 1px solid rgba(17, 17, 17, 0.14);
    background: rgba(255,255,255,0.7);
    color: #111;
    width: 2.3rem;
    height: 2.3rem;
    padding: 0;
    font: inherit;
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
}

.visual-slider-arrow:hover {
    background: rgba(255,255,255,0.95);
}

.visual-slider-arrow:disabled {
    opacity: 0.3;
    cursor: default;
}

@media (max-width: 900px) {
    .visual-featured {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .visual-featured img,
    .visual-slide img {
        height: auto;
        max-height: 60vh;
    }

    .visual-slider {
        grid-template-columns: 2.2rem 1fr 2.2rem;
        gap: 0.6rem;
    }
}

/* -----------------------------------------
   visual groups + individual sliders
----------------------------------------- */

.visual-panel-inner.visual-slider-groups {
    width: 100%;
    max-width: 24rem;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.visual-group {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.visual-main-item,
.image-slide {
    width: 100%;
    margin: 0;
    text-align: left;
}

.visual-main-item img,
.image-slide img {
    width: 100%;
    height: 320px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
    background: transparent;
    box-shadow: 0 0.25rem 0.8rem rgba(0, 0, 0, 0.06);
}

.visual-main-item figcaption,
.image-slide figcaption {
    margin-top: 0.35rem;
    font-size: 0.78rem;
    line-height: 1.2;
    opacity: 0.65;
}

.image-slider {
    display: grid;
    grid-template-columns: 2.2rem 1fr 2.2rem;
    gap: 0.7rem;
    align-items: center;
}

.image-slider-viewport {
    width: 100%;
    overflow: hidden;
}

.image-slider-track {
    display: flex;
    transition: transform 0.35s ease;
    will-change: transform;
}

.image-slide {
    flex: 0 0 100%;
}

.image-slider-arrow {
    appearance: none;
    border: 1px solid rgba(17, 17, 17, 0.12);
    background: rgba(255, 255, 255, 0.75);
    color: #111;
    width: 2.2rem;
    height: 2.2rem;
    padding: 0;
    font: inherit;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
}

.image-slider-arrow:hover {
    background: rgba(255, 255, 255, 0.95);
}

.image-slider-arrow:disabled {
    opacity: 0.28;
    cursor: default;
}

@media (max-width: 900px) {
    .visual-panel-inner.visual-groups {
        max-width: 31rem;
        gap: 1.7rem;
    }

    .visual-main-item img,
    .image-slide img {
        height: auto;
        max-height: 60vh;
    }
}

/* -----------------------------------------
   grouped visual sliders
----------------------------------------- */

.visual-panel-inner.visual-slider-groups {
    width: 100%;
    max-width: 32rem;
    margin: 0 auto;

    display: flex;
    flex-direction: column;
    gap: 2.4rem;
}

.visual-slider-group {
    display: grid;
    grid-template-columns: 2.2rem 1fr 2.2rem;
    row-gap: 0.35rem;
}

.visual-slider-head {
    grid-column: 2;
    text-align: center;
}

.visual-slider-label {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 300;
    opacity: 1;
}

.visual-slider {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 2.2rem 1fr 2.2rem;
    gap: 0.7rem;
    align-items: center;
}

.visual-slider-viewport {
    grid-column: 2;
    width: 100%;
    overflow: hidden;
}

.visual-slide {
    flex: 0 0 100%;
    width: 100%;
    margin: 0;
}

.visual-slide figure,
.visual-slide-inner {
    position: relative;
}

.visual-slide-inner::after {

    content: "";

    position: absolute;

    left: 50%;
    top: 0;

    width: 1px;
    height: 100%;

    transform: translateX(-50%);

    background:
        linear-gradient(
            to bottom,
            rgba(0,0,0,0.05),
            rgba(255,255,255,0.32),
            rgba(0,0,0,0.05)
        );

    pointer-events: none;
}

.visual-slide figcaption {
    margin-top: 0.2rem;
    font-size: 0.78rem;
    line-height: 1.2;
    opacity: 0.6;
    text-align: center;
}

.visual-slider-arrow {
    appearance: none;
    border: 1px solid rgba(17, 17, 17, 0.12);
    background: rgba(255, 255, 255, 0.75);
    color: #111;
    width: 2.2rem;
    height: 2.2rem;
    padding: 0;
    font: inherit;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
}

.visual-slider-arrow:hover {
    background: rgba(255, 255, 255, 0.95);
}

.visual-slider-arrow:disabled {
    opacity: 0.28;
    cursor: default;
}

@media (max-width: 900px) {
    .visual-panel-inner.visual-slider-groups {
        max-width: 31rem;
        gap: 1.8rem;
    }

    .visual-slide img {
        height: auto;
        max-height: 60vh;
    }

    .visual-slider {
        grid-template-columns: 2rem 1fr 2rem;
        gap: 0.55rem;
    }
}

/* -----------------------------------------
   visual slider index-style layout
----------------------------------------- */

.visual-slider-group {
    display: grid;
    grid-template-columns: 1.6rem 1fr 1.6rem;
    row-gap: 0.35rem;
}

.visual-slider-head {
    grid-column: 2;
    text-align: center;
    margin-left: 0;
}

.visual-slider-label {
    margin: 0 0 0.15rem 0;
    font-size: 0.9rem;
    /* font-weight: 600; */
    opacity: 1;
    text-align: center;
}

.visual-slider {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1.6rem 1fr 1.6rem;
    align-items: center;
    gap: 0.5rem;
}

.visual-slider-viewport {
    grid-column: 2;
    width: 100%;
    overflow: hidden;
}

.visual-slide {
    flex: 0 0 100%;
    width: 100%;
    margin: 0;
}

.visual-slide img {
    width: auto;
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    box-shadow: none;
    background: transparent;
}

.visual-slide figcaption {
    margin-top: 0.15rem;
    font-size: 0.78rem;
    opacity: 0.6;
    text-align: center;
}

.visual-slider-arrow {
    border: none;
    background: none;
    font-size: 1rem;
    opacity: 0.4;
    cursor: pointer;
}

.visual-slider-arrow:hover {
    opacity: 0.9;
}

.visual-slider-arrow:disabled {
    opacity: 0.15;
}

.visual-slider-head {
    width: var(--current-slide-width, auto);
    margin: 0 auto;
    text-align: center;
}

.visual-slider-label {
    margin: 0;
    text-align: center;
}

.visual-slider-head {
    transform: translateX(var(--title-shift, 0px));
}

.visual-slider-group:nth-of-type(1) {
    --title-shift: 30px;
}

.visual-slider-group:nth-of-type(2) {
    --title-shift: 30px;
}

.visual-slider-group:nth-of-type(3) {
    --title-shift: 33px;
}

.essay-link {
    display: inline;
    width: 100%;
    border: none;
    background: none;
    padding: 0;
    margin: 0;
    font: inherit;
    color: inherit;
    text-align: left;
    cursor: pointer;
}

.essay-link:hover {
    opacity: 0.75;
    text-decoration-thickness: 3px;
}

.essay-link.is-active {
    opacity: 1;
}

.essay-link {
    cursor: pointer;
}

.essay-link:hover {
    opacity: 0.75;
}

.essay-link.is-active {
    opacity: 1;
}

@media (max-width: 900px) {

    #visual-marking {
        --title-shift: 0px;
    }

    #visual-transforming {
        --title-shift: -6px;
    }

    #visual-accumulating {
        --title-shift: 5px;
    }

}

.page-wrapper {
    position: relative;
}

.page-wrapper::before,
.page-wrapper::after {
    content: "";
    position: fixed;
    top: 0;
    height: 100vh;
    width: 34px;
    pointer-events: none;
    z-index: 30;
    opacity: 0.42;

    background:
      linear-gradient(
        to right,
        rgba(0,0,0,0) 0%,
        rgba(0,0,0,0.018) 14%,
        rgba(0,0,0,0.035) 28%,
        rgba(255,255,255,0.28) 42%,
        rgba(255,255,255,0.52) 48%,
        rgba(0,0,0,0.075) 52%,
        rgba(0,0,0,0.028) 64%,
        rgba(0,0,0,0.012) 78%,
        rgba(0,0,0,0) 100%
      );

    filter: blur(0.35px);

    
}

/* 목차와 글 사이 */
.page-wrapper::before {
    left: 248px;
}

/* 글과 이미지 사이 */
.page-wrapper::after {
    left: calc(220px + ((100vw - 220px) / 2));
}

@media (max-width: 900px) {
    .page-wrapper::before,
    .page-wrapper::after {
        display: none;
    }
}

@media (max-width: 900px) {

.visual-slide-inner::after {
display: none;
}

}

.visual-slide img::after,
.visual-main-item img::after,
.image-slide img::after,
.visual-featured img::after {

    content: "";
    position: absolute;

    left: 50%;
    top: 0;

    width: 1px;
    height: 100%;

    transform: translateX(-50%);

    background:
        linear-gradient(
            to bottom,
            rgba(0,0,0,0.06),
            rgba(255,255,255,0.35),
            rgba(0,0,0,0.06)
        );

    pointer-events: none;
}


.image-fold-frame {
    position: relative;
    padding: 24px;
    /* background-color: #f6f4ef; */
    background-color: #f1f1f1;
    overflow: hidden;

    box-shadow:
        0 0.18rem 0.55rem rgba(0,0,0,0.012);

    background-image:
        /* top crease */
        linear-gradient(
            to bottom,
            rgba(0,0,0,0) 0%,
            rgba(0,0,0,0.010) 14%,
            rgba(0,0,0,0.014) 28%,
            rgba(255,255,255,0.12) 42%,
            rgba(255,255,255,0.10) 48%,
            rgba(0,0,0,0.024) 52%,
            rgba(0,0,0,0.012) 64%,
            rgba(0,0,0,0.006) 78%,
            rgba(0,0,0,0) 100%
        ),

        /* bottom crease */
        linear-gradient(
            to top,
            rgba(0,0,0,0) 0%,
            rgba(0,0,0,0.010) 14%,
            rgba(0,0,0,0.014) 28%,
            rgba(255,255,255,0.12) 42%,
            rgba(255,255,255,0.10) 48%,
            rgba(0,0,0,0.024) 52%,
            rgba(0,0,0,0.012) 64%,
            rgba(0,0,0,0.006) 78%,
            rgba(0,0,0,0) 100%
        ),

        /* left crease */
        linear-gradient(
            to right,
            rgba(0,0,0,0) 0%,
            rgba(0,0,0,0.010) 14%,
            rgba(0,0,0,0.014) 28%,
            rgba(255,255,255,0.12) 42%,
            rgba(255,255,255,0.10) 48%,
            rgba(0,0,0,0.024) 52%,
            rgba(0,0,0,0.012) 64%,
            rgba(0,0,0,0.006) 78%,
            rgba(0,0,0,0) 100%
        ),

        /* right crease */
        linear-gradient(
            to left,
            rgba(0,0,0,0) 0%,
            rgba(0,0,0,0.010) 14%,
            rgba(0,0,0,0.014) 28%,
            rgba(255,255,255,0.12) 42%,
            rgba(255,255,255,0.10) 48%,
            rgba(0,0,0,0.024) 52%,
            rgba(0,0,0,0.012) 64%,
            rgba(0,0,0,0.006) 78%,
            rgba(0,0,0,0) 100%
        );

    background-repeat: no-repeat;
    background-size:
        100% 26px,
        100% 26px,
        26px 100%,
        26px 100%;

    background-position:
        top center,
        bottom center,
        center left,
        center right;
}


.image-fold-frame::after {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    height: 100%;
    width: 48px;

    transform: translateX(-50%);
    pointer-events: none;
    opacity: 0.18;

    background:
      linear-gradient(
        to right,
        rgba(0,0,0,0) 0%,
        rgba(0,0,0,0.010) 14%,
        rgba(0,0,0,0.014) 28%,
        rgba(255,255,255,0.10) 42%,
        rgba(255,255,255,0.08) 48%,
        rgba(0,0,0,0.018) 52%,
        rgba(0,0,0,0.010) 64%,
        rgba(0,0,0,0.006) 78%,
        rgba(0,0,0,0) 100%
      );
}