:root {
    --reader-ink: #151d2f;
    --reader-ink-soft: #526078;
    --reader-ink-muted: #7a869b;
    --reader-paper: #ffffff;
    --reader-line: rgba(31, 44, 65, 0.1);
    --reader-shadow: rgba(24, 34, 48, 0.06);
    --reader-blue: #1659c0;
    --reader-radius-xl: 22px;
    --reader-radius-lg: 14px;
    --reader-radius-md: 10px;
    --reader-display: var(--font-display);
    --reader-ui: var(--font-ui);
    --reader-mono: var(--font-ui);
}

.reader-shell {
    padding: 0 22px 20px;
}

.reader-frame {
    max-width: 1180px;
    margin: 0 auto;
}

.reader-masthead {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 0 14px;
}

.reader-brand .brand-word {
    font-family: var(--reader-display);
    font-weight: 700;
}

.reader-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.reader-nav-link {
    padding: 7px 12px;
    border-radius: 999px;
    border: 1px solid rgba(21, 29, 47, 0.08);
    background: rgba(255, 255, 255, 0.78);
    color: var(--reader-ink-soft);
    font-family: var(--reader-ui);
    font-size: 0.86rem;
    font-weight: 600;
    transition: transform 180ms ease, border-color 180ms ease, color 180ms ease, background 180ms ease;
}

.reader-nav-link:hover,
.reader-nav-link-active {
    color: var(--reader-ink);
    border-color: rgba(21, 29, 47, 0.16);
    background: rgba(255, 255, 255, 0.98);
    transform: translateY(-1px);
}

.reader-home,
.reader-page {
    display: grid;
    gap: 16px;
}

.reader-index-shell,
.reader-article-head,
.reader-reading-pane,
.reader-panel-card {
    border: 1px solid var(--reader-line);
    border-radius: var(--reader-radius-xl);
    background: var(--reader-paper);
    box-shadow: 0 10px 26px var(--reader-shadow);
}

.reader-index-shell {
    padding: 16px 18px 18px;
}

.reader-index-head {
    margin-bottom: 16px;
}

.reader-kicker,
.reader-panel-label,
.reader-note-type,
.reader-language-marker,
.reader-chip,
.reader-article-meta span,
.reader-article-meta a,
.reader-breadcrumbs,
.reader-footer-links,
.reader-key-term-meta,
.reader-article-row-foot {
    font-family: var(--reader-mono);
    letter-spacing: 0.03em;
    text-transform: uppercase;
    font-size: 0.74rem;
}

.reader-kicker {
    color: var(--reader-blue);
    margin-bottom: 4px;
}

.reader-index-head h1,
.reader-article-head h1,
.reader-end-block h2 {
    margin: 0;
    font-family: var(--reader-display);
    color: var(--reader-ink);
    letter-spacing: -0.03em;
    line-height: 1.08;
}

.reader-index-head h1 {
    font-size: 1.55rem;
}

.reader-index-head p,
.reader-content-note,
.reader-panel-card p,
.reader-end-section p,
.reader-article-row p {
    margin: 0;
    color: var(--reader-ink-soft);
    font-family: var(--reader-ui);
    font-size: 0.9rem;
}

.reader-article-list,
.reader-key-term-grid,
.reader-end-grid,
.reader-note-list,
.reader-question-list,
.reader-study-panel {
    display: grid;
}

.reader-article-row,
.reader-empty-state {
    border-top: 1px solid rgba(21, 29, 47, 0.1);
}

.reader-language-columns {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    align-items: start;
}

.reader-language-column {
    min-width: 0;
}

.reader-language-column + .reader-language-column {
    padding-left: 16px;
    border-left: 1px solid rgba(21, 29, 47, 0.12);
}

.reader-language-column-head {
    margin-bottom: 6px;
}

.reader-language-column-head h2 {
    margin: 0;
    font-family: var(--reader-display);
    font-size: 1.08rem;
    color: #214c8b;
    letter-spacing: -0.02em;
}

.reader-article-row {
    display: grid;
    gap: 6px;
    padding: 12px 0;
}

.reader-article-row-meta,
.reader-article-row-foot,
.reader-article-meta,
.reader-footer-links,
.reader-topic-list,
.reader-paragraph-meta,
.reader-spotlight-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.reader-chip {
    display: inline-flex;
    align-items: center;
    padding: 3px 7px;
    border-radius: 999px;
    border: 1px solid rgba(21, 29, 47, 0.1);
    background: rgba(22, 89, 192, 0.04);
}

.reader-article-row-body h2 {
    margin: 0 0 6px;
    font-family: var(--reader-display);
    font-size: 1.02rem;
    line-height: 1.24;
}

.reader-article-row-body h3 {
    margin: 0;
    font-family: var(--reader-display);
    font-size: 1.08rem;
    line-height: 1.28;
    letter-spacing: -0.02em;
}

.reader-title-suffix {
    color: #5b6576;
}

.reader-article-row-body p {
    line-height: 1.45;
}

.reader-article-row-foot {
    color: var(--reader-ink-muted);
    justify-content: flex-start;
}

.reader-empty-state {
    padding: 16px 0 4px;
}

.reader-empty-column {
    padding: 12px 0 0;
}

.reader-empty-column p {
    font-size: 0.88rem;
}

.reader-column-app-note {
    margin-top: 14px;
    color: #1659c0;
    font-family: var(--reader-ui);
    font-size: 0.88rem;
    font-weight: 800;
    line-height: 1.35;
}

.reader-empty-state h2 {
    margin: 0 0 6px;
    font-family: var(--reader-display);
    font-size: 1rem;
}

.reader-page-detail {
    gap: 14px;
}

.reader-page-plain {
    display: grid;
    gap: 10px;
}

.reader-breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    color: var(--reader-ink-muted);
}

.reader-breadcrumbs a:hover {
    color: var(--reader-ink);
}

.reader-piece-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 12px;
    color: var(--reader-ink-muted);
    font-family: var(--reader-mono);
    font-size: 0.74rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.reader-article-head {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(230px, 0.75fr);
    gap: 16px;
    padding: 18px 20px;
}

.reader-article-head h1 {
    font-size: clamp(1.8rem, 3.6vw, 2.7rem);
}

.reader-article-summary {
    margin: 10px 0 12px;
    color: var(--reader-ink-soft);
    font-size: 0.96rem;
    max-width: 56ch;
}

.reader-article-meta {
    color: var(--reader-ink-muted);
}

.reader-article-meta a {
    color: var(--reader-blue);
}

.reader-content-note {
    margin-top: 12px;
    padding: 10px 12px;
    border-radius: var(--reader-radius-md);
    background: rgba(255, 241, 220, 0.88);
    border: 1px solid rgba(210, 160, 59, 0.26);
}

.reader-article-head-rail {
    display: grid;
    gap: 10px;
    align-content: start;
}

.reader-language-marker {
    display: inline-flex;
    width: fit-content;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid rgba(21, 29, 47, 0.1);
    color: var(--reader-ink);
}

.reader-control-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.reader-spotlight-nav {
    color: var(--reader-ink-muted);
}

.reader-spotlight-nav a {
    color: var(--reader-blue);
}

.reader-control-button {
    min-height: 36px;
    padding: 6px 11px;
    border-radius: 999px;
    border: 1px solid rgba(21, 29, 47, 0.12);
    background: rgba(255, 255, 255, 0.82);
    color: var(--reader-ink);
    font-family: var(--reader-ui);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.reader-control-button:hover,
.reader-control-button-active {
    transform: translateY(-1px);
    border-color: rgba(21, 29, 47, 0.22);
    background: rgba(255, 255, 255, 0.98);
}

.reader-article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.7fr);
    gap: 14px;
    align-items: start;
}

.reader-reading-pane {
    padding: 20px;
}

.reader-reading-pane-single {
    display: grid;
    gap: 0;
}

.reader-paragraph-block + .reader-paragraph-block {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid rgba(21, 29, 47, 0.14);
}

.reader-paragraph-block {
    padding: 4px 0 2px;
    transition: background 180ms ease;
}

.reader-paragraph-block.reader-paragraph-active {
    background: linear-gradient(180deg, rgba(22, 89, 192, 0.03), rgba(22, 89, 192, 0));
}

.reader-paragraph-head {
    display: grid;
    gap: 10px;
    margin-bottom: 16px;
}

.reader-paragraph-head h2 {
    margin: 0;
    font-family: var(--reader-display);
    font-size: 1rem;
    line-height: 1.2;
}

.reader-paragraph-title-translation {
    color: var(--reader-blue);
    font-family: var(--reader-ui);
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.35;
}

.reader-paragraph-original-title {
    margin: 0;
}

.reader-paragraph-source-card {
    display: grid;
    gap: 6px;
    max-width: 560px;
    padding: 12px 14px;
    border: 1px solid rgba(21, 29, 47, 0.1);
    border-radius: var(--reader-radius-lg);
    background: rgba(244, 247, 251, 0.92);
}

.reader-paragraph-source-line {
    line-height: 1.35;
}

.reader-paragraph-source-original {
    color: var(--reader-ink);
    font-family: var(--reader-ui);
    font-size: 0.88rem;
    font-weight: 700;
}

.reader-paragraph-source-translation {
    color: var(--reader-ink-soft);
    font-family: var(--reader-ui);
    font-size: 0.84rem;
}

.reader-item-block + .reader-item-block {
    margin-top: 26px;
    padding-top: 26px;
    border-top: 1px solid rgba(21, 29, 47, 0.12);
}

.reader-item-head {
    display: grid;
    gap: 8px;
    margin-bottom: 14px;
}

.reader-item-title-translation {
    color: var(--reader-blue);
    font-family: var(--reader-display);
    font-size: 1.28rem;
    font-weight: 700;
    line-height: 1.2;
}

.reader-item-title {
    margin: 0;
    color: var(--reader-ink);
    font-family: var(--reader-ui), "PingFang SC", "Hiragino Sans", "Apple SD Gothic Neo", sans-serif;
    font-size: 1.12rem;
    font-weight: 700;
    line-height: 1.35;
}

.reader-item-title a {
    color: inherit;
}

.reader-item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 12px;
    color: var(--reader-blue);
    font-family: var(--reader-ui);
    font-size: 0.74rem;
    font-weight: 600;
    line-height: 1.25;
}

.reader-item-source,
.reader-item-date {
    color: var(--reader-blue);
}

.reader-item-modes {
    position: sticky;
    top: 12px;
    z-index: 8;
    display: inline-flex;
    flex-wrap: wrap;
    gap: 6px;
    width: fit-content;
    padding: 6px;
    border: 1px solid rgba(21, 29, 47, 0.1);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 8px 20px rgba(24, 34, 48, 0.08);
    backdrop-filter: blur(14px);
}

.reader-item-mode-button {
    min-height: 30px;
    padding: 0 11px;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: var(--reader-ink-soft);
    font-family: var(--reader-ui);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 140ms ease, color 140ms ease, transform 140ms ease;
}

.reader-item-mode-button:hover,
.reader-item-mode-button:focus-visible,
.reader-item-mode-button-active {
    background: rgba(22, 89, 192, 0.12);
    color: var(--reader-blue);
    transform: translateY(-1px);
    outline: none;
}

.reader-item-columns {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}

.reader-item-original p,
.reader-item-translation p {
    margin: 0;
}

.reader-item-original {
    color: var(--reader-ink);
    font-family: var(--reader-ui), "PingFang SC", "Hiragino Sans", "Apple SD Gothic Neo", sans-serif;
    font-size: clamp(1.02rem, 1.45vw, 1.16rem);
    line-height: 1.95;
}

.reader-mode-sentence {
    display: inline;
}

.reader-popup-segment {
    display: inline;
    margin: 0;
    padding: 0;
    border-radius: 0.24em;
    cursor: help;
    transition: background 140ms ease, color 140ms ease;
}

.reader-popup-segment:hover,
.reader-popup-segment:focus-visible {
    background: rgba(22, 89, 192, 0.11);
    color: var(--reader-blue);
    outline: none;
}

.reader-item-translation {
    display: grid;
    gap: 8px;
    padding-left: 20px;
    border-left: 1px solid rgba(21, 29, 47, 0.1);
    color: var(--reader-ink-soft);
    font-family: var(--reader-ui);
    font-size: 0.94rem;
    line-height: 1.65;
}

.reader-hover-modal {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 100;
    width: min(340px, calc(100vw - 24px));
    padding: 12px 14px 13px;
    border: 1px solid rgba(21, 29, 47, 0.12);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 16px 36px rgba(24, 34, 48, 0.16);
    pointer-events: none;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 120ms ease, transform 120ms ease;
}

.reader-hover-modal-visible {
    opacity: 1;
    transform: translateY(0);
}

.reader-hover-surface {
    color: var(--reader-ink);
    font-family: var(--reader-ui), "PingFang SC", "Hiragino Sans", "Apple SD Gothic Neo", sans-serif;
    font-size: 1.02rem;
    font-weight: 700;
    line-height: 1.3;
}

.reader-hover-reading,
.reader-hover-meta {
    margin-top: 4px;
    color: var(--reader-ink-muted);
}

.reader-hover-reading {
    font-family: var(--reader-ui);
    font-size: 0.84rem;
    font-weight: 600;
}

.reader-hover-meta {
    font-family: var(--reader-mono);
    font-size: 0.68rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.reader-hover-gloss {
    margin-top: 8px;
    color: var(--reader-ink-soft);
    font-family: var(--reader-ui);
    font-size: 0.88rem;
    line-height: 1.45;
}

.reader-hover-note {
    margin-top: 8px;
    color: var(--reader-blue);
    font-family: var(--reader-ui);
    font-size: 0.75rem;
    font-weight: 700;
    line-height: 1.35;
}

.reader-paragraph-meta {
    color: var(--reader-ink-muted);
    font-family: var(--reader-mono);
    font-size: 0.74rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.reader-paragraph-meta a {
    color: var(--reader-blue);
}

.reader-target-paragraph {
    margin: 0;
    color: var(--reader-ink);
    font-family: var(--reader-ui), "PingFang SC", "Hiragino Sans", "Apple SD Gothic Neo", sans-serif;
    font-size: clamp(0.98rem, 1.35vw, 1.08rem);
    line-height: 1.9;
}

.reader-sentence {
    position: relative;
}

.reader-span {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    vertical-align: baseline;
    margin: 0 0.05em;
    padding: 0.02em 0.12em 0.06em;
    border-radius: 8px;
    cursor: pointer;
    transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.reader-span:hover,
.reader-span:focus-visible,
.reader-span.reader-span-active {
    background: rgba(22, 89, 192, 0.11);
    color: var(--reader-blue);
    transform: translateY(-1px);
}

.reader-span-reading {
    display: none;
    margin-bottom: 0.08em;
    color: var(--reader-ink-muted);
    font-family: var(--reader-mono);
    font-size: 0.6em;
    line-height: 1;
}

.reader-readings-on .reader-span-reading {
    display: block;
}

.reader-sentence-translation-cache {
    display: none;
}

.reader-study-panel {
    gap: 12px;
    align-content: start;
    position: sticky;
    top: 24px;
}

.reader-panel-card {
    padding: 16px;
}

.reader-panel-card h2 {
    margin: 6px 0 8px;
    font-family: var(--reader-display);
    font-size: 1.1rem;
    line-height: 1.06;
}

.reader-panel-reading,
.reader-panel-meta,
.reader-panel-source,
.reader-panel-source-translation {
    color: var(--reader-ink-muted);
}

.reader-panel-source,
.reader-panel-source-translation {
    font-family: var(--reader-ui);
    font-size: 0.9rem;
    line-height: 1.45;
}

.reader-panel-source {
    margin-bottom: 4px;
    color: var(--reader-ink);
    font-weight: 700;
}

.reader-panel-source-translation {
    margin-bottom: 8px;
}

.reader-panel-meta {
    font-family: var(--reader-mono);
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.reader-panel-meta a {
    color: var(--reader-blue);
}

.reader-panel-translation-block {
    display: grid;
    gap: 8px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(21, 29, 47, 0.1);
}

.reader-panel-translation-list {
    display: grid;
    gap: 10px;
}

.reader-panel-translation-list p {
    margin: 0;
    color: var(--reader-ink-soft);
    font-family: var(--reader-ui);
    font-size: 0.9rem;
    line-height: 1.55;
}

.reader-end-block {
    margin-top: 24px;
    display: grid;
    gap: 14px;
}

.reader-key-term-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.reader-key-term-card,
.reader-note-card,
.reader-question-card {
    padding: 14px;
    border: 1px solid rgba(21, 29, 47, 0.1);
    border-radius: var(--reader-radius-lg);
    background: rgba(255, 255, 255, 0.9);
}

.reader-key-term-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 6px;
}

.reader-end-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.reader-note-list,
.reader-question-list {
    gap: 10px;
}

.reader-footer {
    display: flex;
    justify-content: flex-end;
    padding: 10px 0 6px;
}

.reader-footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    color: var(--reader-ink-muted);
}

.reader-glosses-off .reader-span {
    background: transparent !important;
    color: inherit !important;
    cursor: text;
}

.reader-glosses-off .reader-span-reading {
    display: none !important;
}

@media (max-width: 1100px) {
    .reader-language-columns {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 840px) {
    .reader-index-head,
    .reader-article-head,
    .reader-article-layout,
    .reader-article-row {
        grid-template-columns: 1fr;
    }

    .reader-language-columns {
        grid-template-columns: 1fr;
    }

    .reader-language-column + .reader-language-column {
        padding-left: 0;
        border-left: 0;
    }

    .reader-key-term-grid,
    .reader-end-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .reader-article-row-foot {
        justify-content: flex-start;
    }

    .reader-study-panel {
        position: static;
        top: auto;
    }

    .reader-item-columns {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .reader-item-modes {
        top: 8px;
    }

    .reader-item-translation {
        padding-left: 0;
        border-left: 0;
        border-top: 1px solid rgba(21, 29, 47, 0.1);
        padding-top: 14px;
    }
}

@media (max-width: 720px) {
    .reader-shell {
        padding: 0 14px 16px;
    }

    .reader-masthead,
    .reader-footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .reader-index-shell,
    .reader-article-head,
    .reader-reading-pane,
    .reader-panel-card {
        padding: 14px;
        border-radius: 16px;
    }

    .reader-index-head {
        display: grid;
        gap: 4px;
    }

    .reader-index-head h1,
    .reader-article-head h1 {
        font-size: 1.35rem;
    }

    .reader-key-term-grid,
    .reader-end-grid {
        grid-template-columns: 1fr;
    }

    .reader-target-paragraph {
        font-size: 0.96rem;
        line-height: 1.8;
    }
}