:root {
    --paper-ink: #171c24;
    --paper-text: #232c38;
    --paper-sub: #6a7483;
    --paper-line: #d9e0e8;
    --paper-bg: #f4efe7;
    --paper-card: #fffdf9;
    --paper-shadow: 0 24px 56px rgba(15, 22, 33, 0.1);
    --paper-blue: #4b6fff;
}

html {
    scroll-behavior: smooth;
}

body.paper-page {
    font-family: "Georgia", "Noto Serif KR", serif;
    background:
        radial-gradient(circle at 14% 0%, rgba(204, 191, 174, 0.18), transparent 24%),
        linear-gradient(180deg, #faf6ef 0%, var(--paper-bg) 100%);
    color: var(--paper-text);
    overflow-x: hidden;
}

.paper-shell {
    max-width: 1428px;
    width: 100%;
    margin: 0 auto;
    padding: 0 24px;
}

.paper-home-btn {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 100;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 88px;
    height: 48px;
    padding: 0 18px;
    border-radius: 999px;
    background: rgba(255, 253, 249, 0.88);
    border: 1px solid rgba(255, 255, 255, 0.84);
    box-shadow: 0 14px 34px rgba(15, 35, 61, 0.1);
    backdrop-filter: blur(14px);
    color: #1b2947;
    font-size: 16px;
    font-weight: 700;
    font-family: "Pretendard", "SUIT", sans-serif;
}

.paper-header,
.paper-main {
    padding: 110px 0;
}

.paper-header {
    padding-top: 90px;
    padding-bottom: 54px;
}

.paper-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #637087;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    font-family: "Pretendard", "SUIT", sans-serif;
}

.paper-title-block {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    align-items: end;
    margin-top: 24px;
    padding-bottom: 28px;
    border-bottom: 1px solid rgba(23, 28, 36, 0.1);
}

.paper-label {
    color: var(--paper-blue);
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-family: "Pretendard", "SUIT", sans-serif;
}

.paper-title-copy h1 {
    margin-top: 18px;
    color: var(--paper-ink);
    font-size: 76px;
    line-height: 0.98;
    letter-spacing: -0.06em;
    font-weight: 700;
    word-break: keep-all;
}

.paper-summary {
    max-width: 760px;
    margin-top: 20px;
    color: var(--paper-sub);
    font-size: 22px;
    line-height: 1.7;
    word-break: keep-all;
}

.paper-title-actions {
    flex-shrink: 0;
}

.paper-action-btn,
.paper-head-btn,
.paper-modal-close {
    font-family: "Pretendard", "SUIT", sans-serif;
}

.paper-action-btn {
    min-width: 152px;
    min-height: 54px;
    padding: 0 22px;
    border-radius: 999px;
    border: 1px solid rgba(23, 28, 36, 0.08);
    background: rgba(255, 253, 249, 0.92);
    color: var(--paper-text);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 16px 36px rgba(18, 24, 34, 0.08);
    transition: transform .2s ease, box-shadow .2s ease;
}

.paper-action-btn:hover,
.paper-head-btn:hover {
    transform: translateY(-2px);
}

.paper-meta-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 24px;
}

.paper-meta-strip div {
    padding: 18px 0 0;
    border-top: 1px solid rgba(23, 28, 36, 0.08);
}

.paper-meta-strip span {
    display: block;
    color: var(--paper-sub);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-family: "Pretendard", "SUIT", sans-serif;
}

.paper-meta-strip strong {
    display: block;
    margin-top: 10px;
    color: var(--paper-text);
    font-size: 22px;
    line-height: 1.42;
    letter-spacing: -0.03em;
    word-break: keep-all;
}

.paper-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 28px;
    align-items: start;
}

.paper-aside {
    display: grid;
    gap: 18px;
    position: sticky;
    top: 108px;
}

.paper-note,
.paper-viewer-card {
    background: rgba(255, 253, 249, 0.96);
    border: 1px solid rgba(23, 28, 36, 0.06);
    border-radius: 28px;
    box-shadow: var(--paper-shadow);
}

.paper-note {
    padding: 24px;
}

.paper-note-label {
    color: var(--paper-blue);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-family: "Pretendard", "SUIT", sans-serif;
}

.paper-note strong {
    display: block;
    margin-top: 14px;
    color: var(--paper-text);
    font-size: 22px;
    line-height: 1.34;
    letter-spacing: -0.03em;
    word-break: keep-all;
}

.paper-note span {
    display: block;
    margin-top: 12px;
    color: var(--paper-sub);
    font-size: 15px;
    line-height: 1.84;
    word-break: keep-all;
    font-family: "Pretendard", "SUIT", sans-serif;
}

.paper-keywords {
    display: grid;
    gap: 10px;
    margin-top: 16px;
}

.paper-keywords li {
    min-height: 42px;
    padding: 0 14px;
    border-radius: 14px;
    background: #f6f1ea;
    display: flex;
    align-items: center;
    color: #4c5b72;
    font-size: 15px;
    font-weight: 700;
    font-family: "Pretendard", "SUIT", sans-serif;
}

.paper-viewer-card {
    overflow: hidden;
}

.paper-viewer-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 18px 22px;
    border-bottom: 1px solid var(--paper-line);
    background: rgba(255, 255, 255, 0.88);
}

.paper-dots {
    display: flex;
    gap: 8px;
}

.paper-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #d6dde7;
}

.paper-dots span:first-child {
    background: #ffb1a5;
}

.paper-dots span:nth-child(2) {
    background: #ffd57e;
}

.paper-dots span:nth-child(3) {
    background: #bde6a3;
}

.paper-viewer-title {
    color: #4b556a;
    font-size: 14px;
    font-weight: 700;
    text-align: center;
    font-family: "Pretendard", "SUIT", sans-serif;
}

.paper-head-btn {
    min-width: 74px;
    height: 38px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid rgba(23, 28, 36, 0.08);
    background: #fff;
    color: var(--paper-text);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}

.paper-viewer-body {
    height: 1280px;
    background: #eae3d9;
}

.paper-viewer-body object,
.paper-viewer-body iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.paper-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: none;
}

.paper-modal.open {
    display: block;
}

.paper-modal-bg {
    position: absolute;
    inset: 0;
    background: rgba(8, 15, 26, 0.68);
    backdrop-filter: blur(8px);
}

.paper-modal-dialog {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(1180px, calc(100% - 48px));
    height: min(86vh, 960px);
    border-radius: 30px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 24px 70px rgba(8, 20, 44, 0.28);
}

.paper-modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 28px;
    border-bottom: 1px solid #e8eef6;
}

.paper-modal-head strong {
    color: #182033;
    font-size: 22px;
    font-weight: 700;
}

.paper-modal-close {
    padding: 10px 18px;
    border: 0;
    border-radius: 999px;
    background: #eff4fb;
    color: #36507a;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
}

.paper-modal-body {
    height: calc(100% - 83px);
    background: #eae3d9;
}

.paper-modal-body object,
.paper-modal-body iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

@media (max-width: 1280px) {
    .paper-layout {
        grid-template-columns: 1fr;
    }

    .paper-aside {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .paper-title-copy h1 {
        font-size: 62px;
    }

    .paper-summary {
        font-size: 20px;
    }
}

@media (max-width: 767px) {
    .paper-shell {
        padding: 0 18px;
    }

    .paper-home-btn {
        top: 16px;
        right: 16px;
        min-width: 76px;
        height: 44px;
        font-size: 15px;
    }

    .paper-header,
    .paper-main {
        padding: 92px 0;
    }

    .paper-header {
        padding-top: 112px;
        padding-bottom: 44px;
    }

    .paper-title-block {
        flex-direction: column;
        align-items: flex-start;
    }

    .paper-title-copy h1 {
        font-size: 42px;
    }

    .paper-summary {
        font-size: 17px;
    }

    .paper-meta-strip,
    .paper-aside {
        grid-template-columns: 1fr;
    }

    .paper-viewer-head {
        flex-wrap: wrap;
        padding: 16px 18px;
    }

    .paper-viewer-title {
        width: 100%;
        order: 3;
    }

    .paper-viewer-body {
        height: 78vh;
        min-height: 520px;
    }

    .paper-note,
    .paper-viewer-card {
        border-radius: 24px;
    }

    .paper-note {
        padding: 22px;
    }

    .paper-modal-dialog {
        width: calc(100% - 24px);
        height: min(82vh, 780px);
        border-radius: 24px;
    }

    .paper-modal-head {
        padding: 18px 20px;
    }

    .paper-modal-head strong {
        font-size: 18px;
    }
}