/* ==========================================================================
   한상국의 쉬운 중국경제뉴스 해설 - Material Design Style
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables (Material Design Color Palette)
   -------------------------------------------------------------------------- */
:root {
    /* Primary Colors */
    --primary: #1a73e8;
    --primary-dark: #1557b0;
    --primary-light: #e8f0fe;

    /* Surface Colors */
    --surface: #ffffff;
    --surface-variant: #f8f9fa;
    --surface-dim: #f1f3f4;

    /* Text Colors */
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --text-disabled: #9aa0a6;

    /* Border Colors */
    --border: #e0e0e0;
    --border-light: #f0f0f0;

    /* Importance Badge Colors */
    --importance-critical: #d93025;
    --importance-high: #f9ab00;
    --importance-medium: #1e8e3e;
    --importance-low: #5f6368;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Typography */
    --font-family: 'Noto Sans KR', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;

    /* Shadows (Material Design Elevation) */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.08);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* --------------------------------------------------------------------------
   Reset & Base Styles
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--surface-variant);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.main-content {
    flex: 1;
    padding: var(--spacing-lg) 0;
}

/* --------------------------------------------------------------------------
   Site Header
   -------------------------------------------------------------------------- */
.site-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.site-header .container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.site-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin: 0;
}

.site-title a {
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.site-title a:hover {
    color: var(--primary-dark);
}

.site-date {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xs);
}

.nav-search {
    display: flex;
    align-items: center;
    margin-left: auto;
}

.nav-search-input {
    width: 120px;
    padding: 3px 8px;
    font-size: var(--font-size-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color var(--transition-fast), width var(--transition-normal);
}

.nav-search-input:focus {
    border-color: var(--primary);
    width: 180px;
}

.nav-search-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 2px 4px;
    font-size: var(--font-size-sm);
    line-height: 1;
}

/* Search result bar */
.search-result-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary-light);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary);
}

.search-result-badge {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.search-result-badge strong {
    color: var(--primary);
}

.search-nav-btns {
    display: flex;
    gap: var(--spacing-sm);
}

.search-nav-btns-bottom {
    margin-top: var(--spacing-lg);
    justify-content: center;
}

.search-nav-btn {
    display: inline-block;
    padding: 5px 14px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    background: var(--surface);
    transition: all var(--transition-fast);
}

.search-nav-btn:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--primary-light);
}

.search-nav-btn-home {
    color: var(--primary);
    border-color: var(--primary);
}

.search-nav-btn-home:hover {
    background: var(--primary);
    color: #fff;
}

@media (max-width: 768px) {
    .nav-search-input { width: 90px; }
    .nav-search-input:focus { width: 130px; }
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* --------------------------------------------------------------------------
   Badge Styles
   -------------------------------------------------------------------------- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    line-height: 1;
    white-space: nowrap;
}

/* Importance Badges */
.importance-critical {
    background-color: var(--importance-critical);
    color: #ffffff;
}

.importance-high {
    background-color: var(--importance-high);
    color: var(--text-primary);
}

.importance-medium {
    background-color: var(--importance-medium);
    color: #ffffff;
}

.importance-low {
    background-color: var(--importance-low);
    color: #ffffff;
}

/* Category Badge */
.badge.category {
    background-color: var(--primary-light);
    color: var(--primary);
}

/* --------------------------------------------------------------------------
   News Card
   -------------------------------------------------------------------------- */
.news-card {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    transition: box-shadow var(--transition-normal);
}

.news-card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
}

.card-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.news-date {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-left: auto;
}

.news-source-inline {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-left: var(--spacing-sm);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    line-height: 1.4;
    margin: 0;
}

.card-title a {
    color: var(--text-primary);
    display: block;
}

.card-title a:hover {
    color: var(--primary);
}

/* Card Headline (attention-grabbing, max 18 chars) */
.card-headline {
    font-size: var(--font-size-xl);
    font-weight: 700;
    line-height: 1.3;
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.01em;
}

.card-headline a {
    color: var(--text-primary);
    display: block;
}

.card-headline a:hover {
    color: var(--primary);
}

/* Original title shown below headline */
.card-title-sub {
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Expert Review Section */
.card-review {
    background-color: var(--surface-variant);
    border-left: 3px solid var(--primary);
    margin: 0 var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.card-review p {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    line-height: 1.7;
    margin: 0;
}

/* Original Content Section */
.card-original {
    padding: var(--spacing-md);
    padding-top: var(--spacing-sm);
}

.toggle-original-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.toggle-original-btn:hover {
    background-color: var(--surface-variant);
    border-color: var(--primary);
    color: var(--primary);
}

.toggle-original-btn::before {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 5px solid currentColor;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    transition: transform var(--transition-fast);
}

.toggle-original-btn.expanded::before {
    transform: rotate(90deg);
}

.original-content {
    background-color: var(--surface-dim);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-sm);
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.original-content.collapsed {
    display: none;
}

.original-inner {
    padding: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.8;
    max-height: 400px;
    overflow-y: auto;
}

.original-inner p {
    margin-bottom: var(--spacing-sm);
}

.original-inner p:last-child {
    margin-bottom: 0;
}

.collapse-btn {
    display: block;
    width: 100%;
    background: var(--border-light);
    border: none;
    border-top: 1px solid var(--border);
    padding: var(--spacing-sm);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

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

/* Card Footer */
.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border-top: 1px solid var(--border-light);
    background-color: var(--surface-variant);
}

.news-source {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.read-more {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   Intro Card (Platform & Expert Introduction)
   -------------------------------------------------------------------------- */
.intro-card {
    position: relative;
    background: var(--surface);
    max-width: 720px;
    margin: 0 auto var(--spacing-md);
    padding: 20px;
    border-radius: var(--radius-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.intro-card.hidden {
    display: none;
}

.intro-card-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 28px;
    height: 28px;
    background: none;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    line-height: 1;
    color: var(--text-disabled);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.intro-card-close:hover {
    background-color: var(--surface-dim);
    color: var(--text-secondary);
}

.intro-card-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px;
    padding-right: 28px;
}

.intro-card-body {
    font-size: 15px;
    line-height: 1.6;
    color: #333;
    margin: 0 0 12px;
    white-space: pre-line;
}

.intro-card-body:last-child {
    margin-bottom: 0;
}

.intro-card-expert {
    color: #555;
}

/* --------------------------------------------------------------------------
   Headline Summary Card (오늘의 헤드라인)
   -------------------------------------------------------------------------- */
.headline-summary-card {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(26, 26, 46, 0.3);
}

.headline-summary-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.headline-icon {
    font-size: 1.5rem;
}

.headline-summary-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: #ffffff;
    margin: 0;
    flex: 1;
}

.headline-count {
    background: rgba(255, 107, 107, 0.2);
    color: #ff6b6b;
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.headline-list {
    list-style: none;
    margin: 0;
    padding: var(--spacing-sm) 0;
}

.headline-item {
    margin: 0;
    padding: 0;
}

.headline-item a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.headline-item a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
}

.headline-rank {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.6);
    flex-shrink: 0;
}

.headline-text {
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 1위 강조 스타일 */
.headline-rank-1 .headline-rank {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a5a 100%);
    color: #ffffff;
    width: 28px;
    height: 28px;
    font-size: var(--font-size-sm);
}

.headline-rank-1 .headline-text {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: #ffffff;
}

/* 2-3위 강조 스타일 */
.headline-rank-top .headline-rank {
    background: rgba(255, 171, 0, 0.3);
    color: #ffab00;
}

.headline-rank-top .headline-text {
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
}

/* --------------------------------------------------------------------------
   Date Group Headers
   -------------------------------------------------------------------------- */
.date-group {
    margin-bottom: var(--spacing-lg);
}

.date-heading {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: var(--spacing-sm) 0;
    margin-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border);
}

/* --------------------------------------------------------------------------
   News Detail Page
   -------------------------------------------------------------------------- */
.news-detail {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.news-header {
    padding: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
}

.news-detail .news-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.news-detail .news-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

.news-detail .news-source {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Expert Review Section (Detail) */
.expert-review-section {
    padding: var(--spacing-lg);
    background-color: var(--surface);
}

.section-title {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
}

.expert-review {
    background-color: var(--surface-variant);
    border-left: 4px solid var(--primary);
    padding: var(--spacing-lg);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-size: var(--font-size-base);
    line-height: 1.8;
    white-space: pre-wrap;
}

/* Summary Section */
.summary-section {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.summary {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Original Section (Detail) */
.original-section {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.news-detail .original-content {
    margin-top: var(--spacing-md);
}

.news-detail .original-inner {
    max-height: none;
}

/* News Footer (Detail) */
.news-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--surface-variant);
    border-top: 1px solid var(--border);
}

.back-link,
.source-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   Archive Page
   -------------------------------------------------------------------------- */
.archive-section {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.page-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    margin: 0;
}

.archive-layout {
    display: grid;
    grid-template-columns: 200px 1fr;
    min-height: 400px;
}

.date-list {
    background-color: var(--surface-variant);
    border-right: 1px solid var(--border);
    padding: var(--spacing-md);
}

.date-list h3 {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.date-list ul {
    list-style: none;
}

.date-list li {
    margin-bottom: var(--spacing-xs);
}

.date-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.date-link:hover {
    background-color: var(--primary-light);
    color: var(--primary);
}

.date-link.active {
    background-color: var(--primary);
    color: #ffffff;
}

.archive-content {
    padding: var(--spacing-lg);
}

.archive-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.archive-content .news-card {
    box-shadow: none;
    border: 1px solid var(--border);
}

/* --------------------------------------------------------------------------
   Pagination
   -------------------------------------------------------------------------- */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) 0;
}

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 80px;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--primary);
    color: #ffffff;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.page-link:hover {
    background-color: var(--primary-dark);
    color: #ffffff;
}

.page-info {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Empty State
   -------------------------------------------------------------------------- */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Error Page
   -------------------------------------------------------------------------- */
.error-page {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.error-page h1 {
    font-size: 4rem;
    color: var(--text-disabled);
    margin-bottom: var(--spacing-md);
}

.error-page p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* --------------------------------------------------------------------------
   Site Footer
   -------------------------------------------------------------------------- */
.site-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: var(--spacing-lg) 0;
    margin-top: auto;
}

.site-footer p {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.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;
}

/* ==========================================================================
   Mobile Responsive Styles (max-width: 768px)
   ========================================================================== */
@media screen and (max-width: 768px) {
    /* --------------------------------------------------------------------------
       Safe Area Support
       -------------------------------------------------------------------------- */
    body {
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
        padding-bottom: env(safe-area-inset-bottom);
    }

    /* --------------------------------------------------------------------------
       Layout Adjustments
       -------------------------------------------------------------------------- */
    .container {
        padding: 0 var(--spacing-sm);
    }

    .main-content {
        padding: var(--spacing-md) 0;
    }

    /* --------------------------------------------------------------------------
       Site Header (Mobile)
       -------------------------------------------------------------------------- */
    .site-header {
        padding: var(--spacing-sm) 0;
    }

    .site-header .container {
        gap: var(--spacing-xs);
    }

    .site-title {
        font-size: var(--font-size-lg);
    }

    .site-date {
        font-size: var(--font-size-xs);
    }

    .site-nav {
        gap: var(--spacing-md);
    }

    /* --------------------------------------------------------------------------
       Intro Card (Mobile)
       -------------------------------------------------------------------------- */
    .intro-card {
        margin-left: 0;
        margin-right: 0;
        padding: 16px;
        border-radius: var(--radius-sm);
    }

    .intro-card-title {
        font-size: 20px;
    }

    .intro-card-body {
        font-size: 14px;
    }

    /* --------------------------------------------------------------------------
       Headline Summary Card (Mobile)
       -------------------------------------------------------------------------- */
    .headline-summary-card {
        margin-left: 0;
        margin-right: 0;
        border-radius: var(--radius-sm);
        margin-bottom: var(--spacing-md);
    }

    .headline-summary-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .headline-icon {
        font-size: 1.25rem;
    }

    .headline-summary-title {
        font-size: var(--font-size-base);
    }

    .headline-item a {
        padding: var(--spacing-xs) var(--spacing-md);
    }

    .headline-rank {
        width: 20px;
        height: 20px;
        font-size: 0.625rem;
    }

    .headline-text {
        font-size: var(--font-size-sm);
    }

    .headline-rank-1 .headline-rank {
        width: 24px;
        height: 24px;
        font-size: var(--font-size-xs);
    }

    .headline-rank-1 .headline-text {
        font-size: var(--font-size-base);
    }

    /* --------------------------------------------------------------------------
       News Card (Mobile)
       -------------------------------------------------------------------------- */
    .news-card {
        margin-left: 0;
        margin-right: 0;
        border-radius: var(--radius-sm);
    }

    .card-header {
        padding: var(--spacing-sm);
    }

    .card-meta {
        gap: var(--spacing-xs);
    }

    /* 제목: 20px + 2줄 말줄임 */
    .card-title {
        font-size: 20px;
        line-height: 1.4;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .card-title a {
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    /* 카드 헤드라인: 모바일에서 두 줄 표시 */
    .card-headline {
        font-size: 20px;
        line-height: 1.3;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .card-title-sub {
        font-size: var(--font-size-xs);
        -webkit-line-clamp: 1;
    }

    /* 전문가 해설 영역 */
    .card-review {
        margin: 0 var(--spacing-sm);
        padding: var(--spacing-sm);
    }

    .card-review p {
        font-size: var(--font-size-sm);
        line-height: 1.6;
    }

    /* 원문 섹션 */
    .card-original {
        padding: var(--spacing-sm);
    }

    /* 원문 버튼: 전폭, 높이 48px */
    .toggle-original-btn {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 100%;
        height: 48px;
        font-size: var(--font-size-base);
        border-radius: var(--radius-sm);
    }

    /* 원문 영역: max-height 60vh + 내부 스크롤 */
    .original-content {
        margin-top: var(--spacing-sm);
    }

    .original-inner {
        max-height: 60vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }

    /* 접기 버튼 (원문 내부) */
    .collapse-btn {
        height: 48px;
        font-size: var(--font-size-base);
        font-weight: 500;
    }

    .card-footer {
        padding: var(--spacing-sm);
    }

    /* --------------------------------------------------------------------------
       Date Group Headers (Mobile)
       -------------------------------------------------------------------------- */
    .date-heading {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) 0;
    }

    /* --------------------------------------------------------------------------
       News Detail Page (Mobile)
       -------------------------------------------------------------------------- */
    .news-detail {
        border-radius: 0;
        margin: 0 calc(-1 * var(--spacing-sm));
    }

    .news-header {
        padding: var(--spacing-md);
    }

    .news-detail .news-title {
        font-size: var(--font-size-xl);
        line-height: 1.4;
    }

    .expert-review-section {
        padding: var(--spacing-md);
    }

    .expert-review {
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
        line-height: 1.7;
    }

    .summary-section,
    .original-section {
        padding: 0 var(--spacing-md) var(--spacing-md);
    }

    .news-detail .toggle-original-btn {
        width: 100%;
        height: 48px;
    }

    .news-detail .original-inner {
        max-height: 60vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .news-footer {
        padding: var(--spacing-md);
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .news-footer .back-link,
    .news-footer .source-link {
        width: 100%;
        text-align: center;
        padding: var(--spacing-sm);
        background-color: var(--primary-light);
        border-radius: var(--radius-sm);
    }

    /* --------------------------------------------------------------------------
       Archive Page (Mobile)
       -------------------------------------------------------------------------- */
    .archive-section {
        border-radius: 0;
        margin: 0 calc(-1 * var(--spacing-sm));
    }

    .page-title {
        font-size: var(--font-size-lg);
        padding: var(--spacing-md);
    }

    .archive-layout {
        grid-template-columns: 1fr;
    }

    .date-list {
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding: var(--spacing-sm);
    }

    .date-list ul {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .date-list li {
        margin-bottom: 0;
    }

    .date-link {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }

    .archive-content {
        padding: var(--spacing-md);
    }

    .archive-content h3 {
        font-size: var(--font-size-base);
    }

    /* --------------------------------------------------------------------------
       Pagination (Mobile)
       -------------------------------------------------------------------------- */
    .pagination {
        padding: var(--spacing-md) 0;
        gap: var(--spacing-sm);
    }

    .page-link {
        min-width: 70px;
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }

    /* --------------------------------------------------------------------------
       Error Page (Mobile)
       -------------------------------------------------------------------------- */
    .error-page {
        padding: var(--spacing-lg);
        margin: 0 calc(-1 * var(--spacing-sm));
        border-radius: 0;
    }

    .error-page h1 {
        font-size: 3rem;
    }

    /* --------------------------------------------------------------------------
       Site Footer (Mobile)
       -------------------------------------------------------------------------- */
    .site-footer {
        padding: var(--spacing-md) 0;
        padding-bottom: calc(var(--spacing-md) + env(safe-area-inset-bottom));
    }
}

/* ==========================================================================
   Small Mobile Styles (max-width: 375px)
   ========================================================================== */
@media screen and (max-width: 375px) {
    .card-title {
        font-size: 18px;
    }

    .badge {
        font-size: 0.625rem;
        padding: 2px 6px;
    }

    .news-date {
        font-size: 0.625rem;
    }

    .toggle-original-btn {
        font-size: var(--font-size-sm);
    }
}