* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-purple: #8B5CF6;
    --primary-blue: #3B82F6;
    --dark-blue: #1E3A8A;
    --gradient-start: #1E40AF;
    --gradient-end: #7C3AED;
    --text-dark: #1F2937;
    --text-gray: #6B7280;
    --text-light: #9CA3AF;
    --bg-white: #FFFFFF;
    --bg-light: #F9FAFB;
    --border-color: #E5E7EB;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-white);
    line-height: 1.6;
}

/* Header */
.header {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo-section {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    text-decoration: none;
    cursor: pointer;
    transition: opacity 0.2s;
}

.logo:hover {
    opacity: 0.8;
}

.logo-icon {
    width: 60px;
    height: 60px;
    object-fit: contain;
    display: block;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    flex: 1;
    justify-content: center;
}

.nav-item {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.2s;
    position: relative;
}

.nav-item:hover {
    color: var(--primary-purple);
}

.dropdown-icon {
    font-size: 0.7rem;
    color: var(--text-light);
}

.badge-new {
    background: var(--primary-blue);
    color: white;
    font-size: 0.7rem;
    padding: 0.15rem 0.5rem;
    border-radius: 12px;
    font-weight: 600;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

.btn-login {
    background: var(--bg-white);
    color: var(--text-dark);
    border: 1px solid var(--border-color);
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-login:hover {
    background: var(--bg-light);
}

.btn-primary {
    background: var(--primary-purple);
    color: white;
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary:hover {
    background: #7C3AED;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Hero Banner */
.hero-banner {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    padding: 4rem 2rem;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    opacity: 0.95;
    font-weight: 300;
}

.hero-arrow {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s;
}

.hero-arrow:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateX(5px);
}

/* Main Container */
.main-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 3rem 2rem;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 3rem;
}

/* Menu Carousel */
.menu-carousel {
    position: relative;
    margin-top: 2rem;
}

.menu-cards-wrapper {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    overflow: hidden;
}

.menu-card {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

.menu-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--dark-blue);
}

.menu-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.menu-card p {
    font-size: 0.95rem;
    color: var(--text-gray);
    margin: 0;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border: none;
    background: white;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-dark);
    z-index: 10;
    transition: all 0.2s;
    display: none;
}

.carousel-btn:hover {
    background: var(--dark-blue);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.carousel-btn.prev {
    left: -20px;
}

.carousel-btn.next {
    right: -20px;
}

/* Sidebar Container */
#sidebar-container {
    /* Container for dynamically loaded sidebar */
}

/* Sidebar */
.sidebar {
    position: sticky;   
    top: 20px;
    height: fit-content;
}

.sidebar-logo {
    margin-bottom:3rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
}

.version-badge {
    background: var(--text-dark);
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.25rem 0.6rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    white-space: nowrap;
    flex-shrink: 0;
}

.version-badge:hover {
    background: var(--dark-blue);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.4);
}

.logo-link {
    display: inline-block;
    text-decoration: none;
    transition: opacity 0.2s;
}

.logo-link:hover {
    opacity: 0.8;
}

.sidebar-logo-img {
    width: 80px;
    height: auto;
    display: block;
    object-fit: contain;
}

.sidebar-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s;
    font-weight: 500;
    position: relative;
}

.sidebar-item:hover {
    background: var(--bg-light);
    color: var(--dark-blue);
}

.sidebar-item.active {
    background: rgba(30, 58, 138, 0.1);
    color: var(--dark-blue);
}

.sidebar-item .icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.external-icon {
    margin-left: auto;
    font-size: 0.85rem;
    color: var(--text-light);
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-light);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    gap: 0.75rem;
}

.search-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    max-width: 1200px;
    margin-top: 0;
    margin-bottom: 2rem;
    order: -1; /* 다른 요소들보다 먼저 표시 */
}

.search-container .search-box {
    flex: 1;
    margin-bottom: 0;
}

.btn-free-trial {
    background: #1E3A8A;
    color: white;
    border: none;
    padding: 0.75rem 1.2rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    height: fit-content;
    line-height: 1;
}

.btn-free-trial:hover {
    background: #1e40af;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.3);
}

.search-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
    display: block;
    flex-shrink: 0;
}

.search-input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 0.95rem;
    color: var(--text-dark);
    outline: none;
}

.search-input::placeholder {
    color: var(--text-light);
}

/* Content Area */
.content {
    min-height: 100vh;
    position: relative;
}

.content-view {
    display: none;
}

.content-view.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Page Animation */
.content {
    /* Animation removed */
}

/* Stagger Animation Classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Delay classes for staggered animation */
.animate-delay-1 {
    transition-delay: 0.1s;
}

.animate-delay-2 {
    transition-delay: 0.2s;
}

.animate-delay-3 {
    transition-delay: 0.3s;
}

.animate-delay-4 {
    transition-delay: 0.4s;
}

.animate-delay-5 {
    transition-delay: 0.5s;
}

.animate-delay-6 {
    transition-delay: 0.6s;
}

.content .search-box {
    max-width: none;
    margin-bottom: 0;
    padding: 0.5rem 1rem;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.content .search-container {
    margin-top: 0 !important;
    order: -1; /* content 내에서 가장 먼저 표시 */
}


.content .search-box:focus-within {
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin: 0;
}

.view-all-link {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark-blue);
    text-decoration: none;
    transition: all 0.2s;
}

.view-all-link:hover {
    color: var(--primary-purple);
    transform: translateX(2px);
}

@keyframes titleFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.no-results {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-gray);
}

.no-results p {
    font-size: 1.1rem;
    margin: 0;
}

/* Featured Article */
.featured-article {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s, box-shadow 0.2s;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease-out forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.featured-article:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.featured-image {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: linear-gradient(135deg, #E5E7EB, #D1D5DB);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #F3F4F6, #E5E7EB);
    position: relative;
}

.image-text {
    font-size: 4rem;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: 0.1em;
    opacity: 0.3;
}

.article-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-dark);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.featured-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
}

.article-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.3;
}

.article-subtitle {
    color: var(--text-gray);
    font-size: 1rem;
    font-weight: 500;
}

.article-meta {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Article Grid */
.article-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.article-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #FFFFFF;
    transition: all 0.3s;
    cursor: pointer;
}

.article-card a {
    display: block;
    width: 100%;
    height: 100%;
    text-decoration: none;
    color: inherit;
}



.card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.card-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.card-image-placeholder.marketing {
    background: linear-gradient(135deg, #1E40AF, #3B82F6);
}

.card-image-placeholder.alf {
    background: linear-gradient(135deg, #1E3A8A, #2563EB);
}

.card-image-placeholder.event {
    background: linear-gradient(135deg, #1E3A8A, #60A5FA);
}

.phone-mockup {
    width: 120px;
    height: 200px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    position: relative;
}

.chart-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    font-weight: 700;
    color: white;
}

.event-text {
    color: white;
    font-size: 1.2rem;
    font-weight: 700;
    text-align: center;
    line-height: 1.4;
}

.event-date {
    color: white;
    font-size: 0.9rem;
    margin-top: 1rem;
    opacity: 0.9;
}

.card-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(255, 255, 255, 0.95);
    color: var(--text-dark);
    padding: 0.3rem 0.8rem;
    border-radius: 16px;
    font-size: 0.75rem;
    font-weight: 600;
}

.card-badge.alf-badge {
    background: var(--dark-blue);
    color: white;
}

.card-content {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.card-description {
    color: var(--text-gray);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    color: var(--text-light);
    font-size: 0.85rem;
}

/* Payment Section */
.payment-section {
    margin-bottom: 4rem;
    opacity: 0;
    animation: fadeIn 0.8s ease-out 0.3s forwards;
}

.payment-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.payment-card {
    padding: 3rem 2rem;
    border-radius: 16px;
    text-align: center;
    color: white;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
    opacity: 0;
    transform: scale(0.8) rotateY(15deg);
    animation: cardRotateIn 0.7s ease-out forwards;
}

.payment-card:nth-child(1) { animation-delay: 0.4s; }
.payment-card:nth-child(2) { animation-delay: 0.6s; }
.payment-card:nth-child(3) { animation-delay: 0.8s; }

@keyframes cardRotateIn {
    from {
        opacity: 0;
        transform: scale(0.8) rotateY(15deg);
    }
    to {
        opacity: 1;
        transform: scale(1) rotateY(0deg);
    }
}

.payment-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.payment-card.blue {
    background: linear-gradient(135deg, #60A5FA, #3B82F6);
}

.payment-card.orange {
    background: linear-gradient(135deg, #FB923C, #F97316);
}

.payment-card.purple {
    background: linear-gradient(135deg, #A78BFA, #8B5CF6);
}

.payment-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.payment-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

/* Latest Section */
.latest-section {
    margin-bottom: 4rem;
    opacity: 0;
    animation: fadeIn 0.8s ease-out 0.5s forwards;
}

.latest-article {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    padding: 2rem;
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
    cursor: pointer;
    opacity: 0;
    transform: translateX(-30px);
    animation: slideInFromLeft 0.7s ease-out 0.7s forwards;
}

.latest-article:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.latest-image {
    border-radius: 12px;
    overflow: hidden;
}

.latest-image-placeholder {
    width: 100%;
    height: 100%;
    min-height: 250px;
    background: linear-gradient(135deg, #1F2937, #111827);
    display: flex;
    align-items: center;
    justify-content: center;
}

.latest-text {
    font-size: 3rem;
    font-weight: 700;
    color: white;
    letter-spacing: 0.2em;
    opacity: 0.8;
}

.latest-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
}

.latest-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
}

.latest-subtitle {
    color: var(--text-gray);
    font-size: 1rem;
    line-height: 1.6;
}

.latest-meta {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Workbook Header */
.workbook-header {
    margin-bottom: 3rem;
}

.workbook-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    opacity: 0;
    animation: titleFadeIn 0.6s ease-out forwards;
}

.workbook-subtitle {
    font-size: 1.1rem;
    color: var(--text-gray);
    font-weight: 400;
    opacity: 0;
    animation: titleFadeIn 0.6s ease-out 0.2s forwards;
}

/* Featured Report */
.featured-report {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 4rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.3s forwards;
}

.report-banner {
    background: linear-gradient(135deg, #F97316, #FB923C, #EC4899);
    border-radius: 16px;
    padding: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    min-height: 300px;
}

.report-banner::before {
    content: '';
    position: absolute;
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    top: -50px;
    left: -50px;
}

.banner-content {
    position: relative;
    z-index: 1;
    color: white;
}

.banner-tag {
    font-size: 0.9rem;
    margin-bottom: 1rem;
    opacity: 0.95;
}

.banner-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.banner-subtitle {
    font-size: 2.5rem;
    font-weight: 700;
}

.report-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
}

.report-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.3;
}

.report-description {
    font-size: 1rem;
    color: var(--text-gray);
    line-height: 1.6;
}

.report-meta {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Report Grid */
.report-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.report-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    cursor: pointer;
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    animation: cardSlideIn 0.6s ease-out forwards;
}

.report-card:nth-child(1) { animation-delay: 0.4s; }
.report-card:nth-child(2) { animation-delay: 0.5s; }
.report-card:nth-child(3) { animation-delay: 0.6s; }
.report-card:nth-child(4) { animation-delay: 0.7s; }
.report-card:nth-child(5) { animation-delay: 0.8s; }
.report-card:nth-child(6) { animation-delay: 0.9s; }

.report-card:hover {
    transform: translateY(-4px) scale(1);
    box-shadow: var(--shadow-lg);
}

.report-thumbnail {
    width: 100%;
    height: 240px;
    overflow: hidden;
    position: relative;
}

.thumbnail-gradient {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1.5rem;
    color: white;
    position: relative;
    overflow: hidden;
}

.gradient-1 {
    background: linear-gradient(180deg, #EC4899 0%, #F97316 40%, #A855F7 100%);
}

.gradient-2 {
    background: linear-gradient(135deg, #1F2937, #111827);
}

.gradient-3 {
    background: linear-gradient(135deg, #F97316, #FB923C);
}

.gradient-4 {
    background: linear-gradient(135deg, #1F2937, #111827);
}

.gradient-5 {
    background: linear-gradient(135deg, #3B82F6, #2563EB);
}

.gradient-6 {
    background: linear-gradient(135deg, #3B82F6, #60A5FA);
}

.thumbnail-content {
    position: relative;
    z-index: 2;
    width: 100%;
}

.thumbnail-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.3;
}

.pattern-vertical {
    background: repeating-linear-gradient(
        90deg,
        transparent,
        transparent 10px,
        rgba(255, 255, 255, 0.1) 10px,
        rgba(255, 255, 255, 0.1) 20px
    );
}

.white-text {
    color: white;
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.4;
}

/* Folder Stack Pattern */
.folder-stack {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.folder {
    position: absolute;
    width: 70px;
    height: 90px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--text-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform-origin: bottom center;
}

.folder-1 {
    transform: rotate(-8deg) translate(-30px, -20px);
    z-index: 1;
}

.folder-2 {
    transform: rotate(-4deg) translate(-15px, -10px);
    z-index: 2;
}

.folder-3 {
    transform: rotate(0deg) translate(0, 0);
    z-index: 3;
}

.folder-4 {
    transform: rotate(4deg) translate(15px, -10px);
    z-index: 4;
}

.folder-5 {
    transform: rotate(8deg) translate(30px, -20px);
    z-index: 5;
}

.thumbnail-overlay-red {
    background: rgba(220, 38, 38, 0.9);
    color: white;
    padding: 1.5rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 40%;
    line-height: 1.4;
}

/* Benchmark Buttons */
.benchmark-buttons {
    position: absolute;
    bottom: 1.5rem;
    left: 1.5rem;
    display: flex;
    gap: 1.5rem;
    align-items: flex-end;
    z-index: 1;
}

.benchmark-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    position: relative;
}

.benchmark-btn::before {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background: white;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-60%, -50%);
    box-shadow: 10px 0 0 white;
}

.btn-blue {
    background: #2563EB;
    height: 80px;
}

.btn-light-blue {
    background: #60A5FA;
    height: 100px;
}

.btn-red {
    background: #EF4444;
    height: 70px;
}

.benchmark-text {
    position: absolute;
    top: 2rem;
    left: 2rem;
    z-index: 2;
    color: white;
}

.benchmark-title {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.2;
    color: white;
    margin-bottom: 0.5rem;
}

.benchmark-subtitle {
    font-size: 0.9rem;
    color: white;
    opacity: 0.9;
}

/* Bubble Pattern */
.bubble-pattern {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.bubble {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 237, 71, 0.4);
    backdrop-filter: blur(10px);
}

.bubble-1 {
    width: 80px;
    height: 80px;
    top: 10%;
    left: 10%;
}

.bubble-2 {
    width: 60px;
    height: 60px;
    top: 30%;
    right: 15%;
}

.bubble-3 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 20%;
}

.bubble-4 {
    width: 50px;
    height: 50px;
    top: 50%;
    right: 30%;
}

.bubble-5 {
    width: 70px;
    height: 70px;
    bottom: 10%;
    right: 10%;
}

.crm-text {
    position: relative;
    z-index: 2;
}

.crm-title {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.2;
    color: white;
    margin-bottom: 0.5rem;
}

.crm-subtitle {
    font-size: 0.9rem;
    color: white;
    opacity: 0.9;
}

.thumbnail-text {
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.4;
    z-index: 2;
}

.thumbnail-text-large {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

.thumbnail-text-small {
    font-size: 0.9rem;
    opacity: 0.9;
}

.thumbnail-highlight {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(255, 255, 255, 0.95);
    color: var(--text-dark);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.thumbnail-overlay {
    background: rgba(220, 38, 38, 0.9);
    color: white;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 600;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 40%;
}

.thumbnail-logos {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
}

.logo-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.3rem 0.6rem;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.report-card-content {
    padding: 1.5rem;
    background: var(--bg-white);
}

.report-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.report-card-subtitle {
    font-size: 0.95rem;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.report-card-meta {
    font-size: 0.85rem;
    color: var(--text-light);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* Portfolio View */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.portfolio-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    opacity: 0;
    transform: translateX(-30px);
    animation: slideInFromLeft 0.6s ease-out forwards;
}

.portfolio-card:nth-child(1) { animation-delay: 0.1s; }
.portfolio-card:nth-child(2) { animation-delay: 0.3s; }
.portfolio-card:nth-child(3) { animation-delay: 0.5s; }

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.portfolio-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.portfolio-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-blue));
    display: flex;
    align-items: center;
    justify-content: center;
}

.portfolio-placeholder {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
}

.portfolio-content {
    padding: 1.5rem;
}

.portfolio-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.portfolio-content p {
    color: var(--text-gray);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.portfolio-date {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Tips View */
.tips-list {
    margin-top: 2rem;
}

.tip-item {
    display: flex;
    gap: 2rem;
    padding: 2rem;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    transition: all 0.3s;
    opacity: 0;
    transform: translateX(-50px);
    animation: slideInFromLeft 0.6s ease-out forwards;
}

.tip-item:nth-child(1) { animation-delay: 0.1s; }
.tip-item:nth-child(2) { animation-delay: 0.3s; }
.tip-item:nth-child(3) { animation-delay: 0.5s; }

.tip-item:hover {
    box-shadow: var(--shadow-md);
}

.tip-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-purple);
    min-width: 60px;
}

.tip-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.tip-content p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* Insights View */
.insights-list {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.insight-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    opacity: 0;
    transform: scale(0.9) translateY(20px);
    animation: scaleIn 0.6s ease-out forwards;
}

.insight-card:nth-child(1) { animation-delay: 0.1s; }
.insight-card:nth-child(2) { animation-delay: 0.3s; }
.insight-card:nth-child(3) { animation-delay: 0.5s; }

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.insight-card:hover {
    transform: translateY(-4px) scale(1);
    box-shadow: var(--shadow-lg);
}

.insight-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.insight-date {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: block;
}

.insight-card p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* Newsroom View */
.news-list {
    margin-top: 2rem;
}

.news-item {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary-purple);
    transition: all 0.3s;
    opacity: 0;
    transform: translateX(50px);
    animation: slideInFromRight 0.6s ease-out forwards;
}

.news-item:nth-child(1) { animation-delay: 0.1s; }
.news-item:nth-child(2) { animation-delay: 0.3s; }
.news-item:nth-child(3) { animation-delay: 0.5s; }

@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.news-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.news-date {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    display: block;
}

.news-item h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.news-item p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .main-container {
        grid-template-columns: 250px 1fr;
        gap: 2rem;
    }

    .article-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .payment-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        padding: 1rem;
    }

    .nav-menu {
        flex-wrap: wrap;
        gap: 1rem;
        justify-content: flex-start;
    }

    .main-container {
        grid-template-columns: 1fr;
        padding: 2rem 1rem;
    }

    .sidebar {
        position: relative;
        top: 0;
    }

    .featured-article {
        grid-template-columns: 1fr;
    }

    .article-grid {
        grid-template-columns: 1fr;
    }

    .payment-cards {
        grid-template-columns: 1fr;
    }

    .latest-article {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .hero-content h1 {
        font-size: 1.75rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .insights-list {
        grid-template-columns: 1fr;
    }

    .tip-item {
        flex-direction: column;
        gap: 1rem;
    }

    .workbook-title {
        font-size: 2rem;
    }

    .featured-report {
        grid-template-columns: 1fr;
    }

    .report-banner {
        min-height: 250px;
        padding: 2rem;
    }

    .banner-title,
    .banner-subtitle {
        font-size: 2rem;
    }

    .report-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .workbook-title {
        font-size: 1.75rem;
    }

    .report-grid {
        grid-template-columns: 1fr;
    }

    .banner-title,
    .banner-subtitle {
        font-size: 1.5rem;
    }
}

/* Article Detail Page Styles */
.article-detail {
    padding: 2rem 0;
}

.article-header {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #E5E7EB;
}

.article-image {
    margin-bottom: 3rem;
}

.article-image img {
    display: block;
    max-width: 100%;
    height: auto;
}

.article-header .article-badge {
    position: static;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1E40AF 0%, #3B82F6 100%);
    color: white;
    padding: 0.35rem 0.85rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    box-shadow: 0 2px 8px rgba(30, 64, 175, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.article-detail-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1F2937;
    line-height: 1.3;
    margin-bottom: 0.75rem;
    margin-top: 0;
}

.article-meta {
    color: #9CA3AF;
    font-size: 0.95rem;
    margin-top: 0;
}

.article-section {
    margin-bottom: 3rem;
}

.article-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.article-section h2 .section-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #1E40AF 0%, #3B82F6 100%);
    color: white;
    border-radius: 50%;
    text-align: center;
    line-height: 1;
    font-size: 1.1rem;
    font-weight: 700;
    margin-right: 0.75rem;
    vertical-align: middle;
    box-shadow: 0 2px 8px rgba(30, 64, 175, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    flex-shrink: 0;
}

.article-section h2:hover .section-number {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.4);
}

.article-section p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.summary-card {
    background: var(--bg-light);
    border-left: 4px solid var(--dark-blue);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 3rem;
}

.summary-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.summary-item {
    background: var(--bg-white);
    padding: 1rem;
    border-radius: 6px;
    font-size: 0.95rem;
}

.summary-item strong {
    color: var(--dark-blue);
}

.problem-box, .solution-box {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.problem-box h3, .solution-box h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    border-bottom: none;
    padding: 0;
}

.problem-box {
    border-left: 4px solid #EF4444;
}

.solution-box {
    border-left: 4px solid #10B981;
}

.problem-box ul, .solution-box ul {
    list-style-position: inside;
    line-height: 1.8;
}

.problem-box li, .solution-box li {
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    gap: 1.5rem;
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
}

.feature-number {
    width: 40px;
    height: 40px;
    background: var(--dark-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    flex-shrink: 0;
}

.feature-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    border-bottom: none;
    padding: 0;
}

.feature-content p {
    font-size: 1rem;
    margin: 0;
}

.quote-box {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    padding: 2.5rem;
    border-radius: 12px;
    color: white;
    margin: 3rem 0;
}

.quote-text {
    font-size: 1.15rem;
    font-style: italic;
    line-height: 1.8;
    margin: 0;
    text-align: center;
}

.article-footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

.back-button {
    display: inline-block;
    color: var(--dark-blue);
    font-weight: 600;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--dark-blue);
    border-radius: 8px;
    transition: all 0.3s;
}

.back-button:hover {
    background: var(--dark-blue);
    color: white;
    transform: translateX(-5px);
}

@media (max-width: 768px) {
    .article-detail-title {
        font-size: 1.75rem;
    }
    
    .article-section h2 {
        font-size: 1.4rem;
    }
    
    .summary-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
    }
    
    .quote-text {
        font-size: 1rem;
    }
}

/* New Article Detail Styles */
.key-result-box {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.1), rgba(124, 58, 237, 0.1));
    border: 2px solid var(--dark-blue);
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0 3rem;
}

.key-result-text {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin: 0;
}

.key-result-text strong {
    color: var(--dark-blue);
    font-size: 1.3rem;
}

.recommendation-box {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 3rem;
    border-left: 4px solid #10B981;
}

.recommendation-box h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 1rem;
    border-bottom: none;
    padding: 0;
}

.recommendation-box ul {
    list-style: none;
    padding-left: 0;
}

.recommendation-box li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.recommendation-box li::before {
    content: "•";
    color: #10B981;
    font-size: 1.5rem;
    position: absolute;
    left: 0;
}

.comparison-box {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    border-left: 3px solid var(--dark-blue);
}

.comparison-box p {
    margin-bottom: 1rem;
}

.comparison-box p:last-child {
    margin-bottom: 0;
}

.context-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 2rem 0;
}

.context-item {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    border-top: 3px solid var(--primary-blue);
}

.context-item h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    border-bottom: none;
    padding: 0;
    color: var(--dark-blue);
}

.context-item p {
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.6;
}

.highlight-box {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.05), rgba(59, 130, 246, 0.05));
    padding: 1.5rem;
    border-radius: 8px;
    margin: 2rem 0;
    border-left: 4px solid var(--dark-blue);
}

.highlight-box p {
    margin: 0;
    font-weight: 500;
}

.feature-item-large {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all 0.3s;
}

.feature-item-large:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.feature-icon-large {
    width: 40px;
    height: 40px;
    background: var(--dark-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.feature-content-large h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    border-bottom: none;
    padding: 0;
    color: var(--dark-blue);
}

.feature-content-large p {
    font-size: 1.05rem;
    margin-bottom: 1rem;
    line-height: 1.8;
}

.feature-content-large p:last-child {
    margin-bottom: 0;
}

.closing-box {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    padding: 3rem;
    border-radius: 12px;
    color: white;
    margin: 3rem 0;
}

.closing-box h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    padding-bottom: 1rem;
    color: white;
}

.closing-box p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1rem;
    color: white;
}

.closing-box p:last-child {
    margin-bottom: 0;
}

@media (max-width: 1024px) {
    .context-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .key-result-text {
        font-size: 1rem;
    }
    
    .key-result-text strong {
        font-size: 1.1rem;
    }
    
    .recommendation-box {
        padding: 1.5rem;
    }
    
    .feature-item-large {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem;
    }
    
    .closing-box {
        padding: 2rem;
    }
    
    .closing-box h2 {
        font-size: 1.3rem;
    }
}

/* Article Layout with TOC */
.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
    max-width: 1400px;
    margin: 0 auto;
}

.table-of-contents {
    position: sticky;
    top: 120px;
    height: fit-content;
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    box-shadow: none;
}

.toc-header h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1.5px solid var(--border-color);
}

.toc-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.toc-link {
    display: block;
    padding: 0.625rem 0.75rem;
    color: var(--text-gray);
    text-decoration: none;
    font-size: 0.875rem;
    line-height: 1.6;
    border-radius: 8px;
    transition: all 0.15s ease;
}

.toc-link:hover {
    background: rgba(30, 58, 138, 0.05);
    color: var(--dark-blue);
}

.toc-link.active {
    background: rgba(30, 58, 138, 0.1);
    color: var(--dark-blue);
    font-weight: 600;
}

@media (max-width: 1200px) {
    .article-layout {
        grid-template-columns: 1fr 250px;
        gap: 2rem;
    }
}

@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
    }
    
    .table-of-contents {
        position: relative;
        top: 0;
        margin-bottom: 3rem;
    }
}

/* Site Footer */
.site-footer {
    background: #F9FAFB;
    border-top: 1px solid #E5E7EB;
    padding: 1.25rem 0;
    margin-top: 3rem;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-content {
    text-align: center;
    color: #6B7280;
    font-size: 0.8rem;
    line-height: 1.6;
}

.footer-content p {
    margin: 0.15rem 0;
}

.footer-copyright {
    font-weight: 600;
    color: #1F2937;
    margin-bottom: 0.35rem;
}

@media (max-width: 768px) {
    .site-footer {
        padding: 1rem 0;
        margin-top: 2rem;
    }
    
    .footer-content {
        font-size: 0.75rem;
    }
}