/* ==========================================================================
   CSS SYSTEM - PREMIUM E-MAGAZINE (Financial Times x The Economist)
   ========================================================================== */

/* IMPORT GOOGLE FONTS */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,600;0,700;0,800;1,400&family=Lora:ital,wght@0,400;0,500;0,600;1,400&display=swap');

:root {
    /* Color Palette */
    --color-forest-dark: #0D3E14; /* Tông xanh rừng sâu đậm đặc trưng */
    --color-forest-medium: #1B5E20; /* Xanh rừng đậm */
    --color-jade: #2E7D32; /* Xanh ngọc */
    --color-gold: #C9A227; /* Vàng kim */
    --color-gold-light: #F4E8C1; /* Vàng nhạt */
    --color-ivory: #FDFBF7; /* Nền trắng ngà phong cách Economist */
    --color-gray-light: #F5F5F5;
    --color-gray-medium: #E0E0E0;
    --color-gray-dark: #333333;
    --color-red-accent: #D32F2F; /* Đỏ nhạt cho điểm nhấn infographic */
    --color-red-light: #FFEBEE;
    --color-wood: #8D6E63;
    --color-glass-bg: rgba(253, 251, 247, 0.75);
    
    /* Typography */
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-reading: 'Lora', 'Times New Roman', serif;
    --font-sans: 'Inter', Arial, sans-serif;
    
    /* Transitions & Shadow */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-premium: 0 20px 40px rgba(13, 62, 20, 0.08);
    --shadow-glass: 0 8px 32px 0 rgba(13, 62, 20, 0.1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--color-ivory);
    color: var(--color-gray-dark);
    font-family: var(--font-reading);
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-padding {
    padding: 80px 0;
}

/* Header & Progress Bar */
.reading-progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--color-gray-light);
    z-index: 1000;
}

.reading-progress-bar {
    height: 100%;
    width: 0%;
    background-color: var(--color-gold);
    transition: width 0.1s ease-out;
}

/* TOP HEADER */
.mag-header {
    background-color: var(--color-forest-dark);
    color: var(--color-gold-light);
    padding: 15px 0;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    border-bottom: 2px solid var(--color-gold);
    position: sticky;
    top: 0;
    z-index: 999;
}

.mag-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mag-header .logo-text {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    letter-spacing: 1px;
    color: var(--color-gold);
}

.mag-header .meta-tag {
    color: #A5D6A7;
}

/* HERO COVER */
.hero-cover {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    background-color: var(--color-forest-dark);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
    filter: brightness(0.65) contrast(1.1);
    transform: scale(1.05);
    transition: transform 10s ease-out;
}

.hero-cover:hover .hero-bg {
    transform: scale(1.01);
}

.hero-overlay-graphics {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2;
}

/* Floating thin vector symbols */
.floating-vector {
    position: absolute;
    opacity: 0.15;
    transform: translate(-50%, -50%);
    animation: float-around 20s infinite ease-in-out;
}

.fv-dna { top: 20%; left: 15%; width: 100px; height: 100px; }
.fv-leaf { top: 30%; right: 10%; width: 80px; height: 80px; animation-delay: -5s; }
.fv-qr { bottom: 35%; left: 8%; width: 90px; height: 90px; animation-delay: -10s; }
.fv-ip { bottom: 45%; right: 15%; width: 100px; height: 100px; animation-delay: -15s; }

@keyframes float-around {
    0% { transform: translate(-50%, -50%) rotate(0deg) translateY(0); }
    50% { transform: translate(-50%, -50%) rotate(180deg) translateY(-20px); }
    100% { transform: translate(-50%, -50%) rotate(360deg) translateY(0); }
}

.hero-content {
    position: relative;
    z-index: 5;
    max-width: 1000px;
    padding: 0 24px;
    margin-bottom: 6vh;
    text-align: center;
}

.hero-kicker {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: 24px;
    display: inline-block;
    border-bottom: 2px solid var(--color-gold);
    padding-bottom: 6px;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    color: #FFFFFF;
    margin-bottom: 30px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.4);
    letter-spacing: -1px;
}

/* Glassmorphism Sapo Box */
.sapo-box {
    background: rgba(13, 62, 20, 0.45);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 30px 40px;
    color: #E2ECE4;
    font-size: 1.44rem; /* Tăng 3px (từ 1.25rem lên 1.44rem) */
    line-height: 1.7;
    font-weight: 400;
    text-align: justify;
    max-width: 900px;
    margin: 0 auto;
    box-shadow: var(--shadow-glass);
}

.scroll-indicator {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
    color: #FFFFFF;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    opacity: 0.7;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.scroll-indicator svg {
    fill: currentColor;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-8px); }
    60% { transform: translateY(-4px); }
}

/* EDITORIAL GRID AND TYPOGRAPHY */
.editorial-lead {
    font-size: 1.54rem; /* Tăng 3px (từ 1.35rem lên 1.54rem) */
    line-height: 1.8;
    color: var(--color-forest-dark);
    max-width: 740px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 50px;
    font-family: var(--font-reading);
    border-left: 4px solid var(--color-gold);
    padding-left: 24px;
    font-style: italic;
    font-weight: 500; /* Tăng độ đậm để dễ đọc */
}

.section-divider {
    height: 1px;
    background-color: var(--color-gray-medium);
    max-width: 740px;
    margin: 60px auto;
    position: relative;
}

.section-divider::after {
    content: "◆";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--color-ivory);
    padding: 0 15px;
    color: var(--color-gold);
    font-size: 0.9rem;
}

.editorial-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}



.article-body {
    font-size: 1.34rem; /* Tăng 3px (từ 1.15rem lên 1.34rem) */
    line-height: 1.85;
    color: #2b2b2b;
    font-weight: 500; /* Tăng độ đậm để dễ đọc */
}

.article-body p {
    max-width: 740px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 28px;
    text-align: justify;
}

.article-body p:first-of-type::first-letter {
    font-family: var(--font-serif);
    font-size: 4.2rem;
    font-weight: 800;
    float: left;
    line-height: 0.8;
    padding-right: 12px;
    padding-top: 4px;
    color: var(--color-forest-medium);
}

.sidebar-panel {
    background-color: #F6F3EB;
    border-top: 3px solid var(--color-forest-medium);
    padding: 30px 24px;
    height: fit-content;
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
}

.sidebar-title {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-forest-dark);
    margin-bottom: 20px;
    border-bottom: 1px solid var(--color-gray-medium);
    padding-bottom: 10px;
}

/* SECTION TITLE (TIT XEN) */
.section-title {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    line-height: 1.3;
    font-weight: 700;
    color: var(--color-forest-dark);
    max-width: 740px;
    margin: 60px auto 35px auto;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background-color: var(--color-gold);
}

/* EDITORIAL IMAGES */
.editorial-img-container {
    width: 100%;
    margin: 40px 0;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: var(--shadow-premium);
}

.editorial-img-full {
    width: 100%;
    display: block;
    object-fit: cover;
    max-height: 550px;
    transition: transform 0.6s ease;
}

.editorial-img-container:hover .editorial-img-full {
    transform: scale(1.02);
}

/* BIG NUMBERS BLOCK */
.big-numbers-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin: 40px 0;
}

@media (min-width: 600px) {
    .big-numbers-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.big-number-card {
    background-color: #FFFFFF;
    border: 1px solid var(--color-gray-medium);
    border-top: 4px solid var(--color-gold);
    padding: 30px 24px;
    text-align: center;
    border-radius: 4px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.015);
    transition: var(--transition-smooth);
}

.big-number-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-premium);
    border-top-color: var(--color-forest-medium);
}

.big-number-val {
    font-family: var(--font-serif);
    font-size: 3.2rem;
    font-weight: 700;
    color: var(--color-forest-medium);
    line-height: 1.1;
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    align-items: baseline;
}

.big-number-unit {
    font-size: 1.2rem;
    font-family: var(--font-sans);
    font-weight: 600;
    color: var(--color-gold);
    margin-left: 4px;
}

.big-number-desc {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-gray-dark);
    font-weight: 500;
    line-height: 1.4;
}

/* INFOGRAPHICS COMMON */
.infographic-wrapper {
    background-color: #FFFFFF;
    border: 1px solid var(--color-gray-medium);
    border-radius: 8px;
    padding: 40px 30px;
    margin: 50px 0;
    box-shadow: var(--shadow-premium);
}

.info-header {
    margin-bottom: 30px;
    border-bottom: 2px solid var(--color-gray-light);
    padding-bottom: 15px;
}

.info-kicker {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-gold);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 6px;
}

.info-title {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-forest-dark);
}

/* INFOGRAPHIC 1.1: MĂNG RI DASHBOARD */
.mang-ri-dashboard {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

@media (min-width: 768px) {
    .mang-ri-dashboard {
        grid-template-columns: 3fr 2fr;
    }
}

.dashboard-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-box-mini {
    background: #F9F9F7;
    border: 1px solid var(--color-gray-medium);
    border-radius: 6px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.stat-box-mini::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 4px;
    background-color: var(--color-jade);
}

.stat-box-mini:hover {
    background: #FFFFFF;
    box-shadow: 0 10px 25px rgba(13,62,20,0.05);
    border-color: var(--color-gold);
}

.stat-mini-val {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-forest-medium);
    line-height: 1.1;
    margin-bottom: 8px;
}

.stat-mini-label {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-gray-dark);
    font-weight: 500;
}

.dashboard-visual {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 1px dashed var(--color-gray-medium);
    border-radius: 6px;
    padding: 24px;
    background-color: #FAF9F6;
}

.circle-progress-svg {
    transform: rotate(-90deg);
}

.circle-bg {
    fill: none;
    stroke: var(--color-gray-light);
    stroke-width: 8;
}

.circle-val-1 {
    fill: none;
    stroke: var(--color-forest-medium);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 251.2;
    stroke-dashoffset: 251.2; /* Will be set via JS */
    transition: stroke-dashoffset 2s cubic-bezier(0.16, 1, 0.3, 1);
}

.circle-center-text {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 700;
    fill: var(--color-forest-dark);
    text-anchor: middle;
}

.circle-center-sub {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    fill: var(--color-gray-dark);
    text-anchor: middle;
}

/* INFOGRAPHIC 1.2 & 3.2: FLOWCHART / ROADMAP */
.roadmap-container {
    position: relative;
    padding: 20px 0;
}

.roadmap-flow {
    display: flex;
    flex-direction: column;
    gap: 15px;
    position: relative;
}

@media (min-width: 768px) {
    .roadmap-flow {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-between;
    }
}

.roadmap-node {
    background-color: #F9F9F7;
    border: 1px solid var(--color-gray-medium);
    border-radius: 6px;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 15px;
    position: relative;
    transition: var(--transition-smooth);
}

@media (min-width: 768px) {
    .roadmap-node {
        width: 23%; /* 4 columns */
        min-width: 180px;
    }
}

.roadmap-node:hover {
    background-color: #FFFFFF;
    border-color: var(--color-gold);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(13,62,20,0.04);
}

.roadmap-node.active {
    border-color: var(--color-jade);
    background-color: #E8F5E9;
}

.roadmap-icon-wrap {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(46, 125, 50, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-jade);
    flex-shrink: 0;
}

.roadmap-node.active .roadmap-icon-wrap {
    background-color: var(--color-jade);
    color: #FFFFFF;
}

.roadmap-text {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-forest-dark);
}

/* Connecting arrows in flowchart */
.roadmap-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-medium);
}

/* INFOGRAPHIC 2.1: NETWORK DIAGRAM (HTX NETWORK) */
.network-container {
    position: relative;
    width: 100%;
    height: 450px;
    background-color: #FAF9F6;
    border-radius: 8px;
    border: 1px solid var(--color-gray-medium);
    overflow: hidden;
}

.network-svg {
    width: 100%;
    height: 100%;
}

.network-node {
    cursor: pointer;
}

.network-node circle {
    transition: r 0.4s cubic-bezier(0.16, 1, 0.3, 1), fill 0.4s ease, stroke 0.4s ease;
}

.network-node text {
    transition: fill 0.3s ease, font-weight 0.3s ease;
}

.network-node:not(.network-node-center):hover circle {
    r: 44;
    fill: var(--color-forest-medium) !important;
    stroke: var(--color-gold) !important;
}

.network-node:not(.network-node-center):hover text {
    fill: #FFFFFF !important;
    font-weight: 600;
}

.network-node-center:hover circle {
    r: 54;
    fill: var(--color-forest-dark) !important;
    stroke: var(--color-gold) !important;
}

.network-link {
    stroke: var(--color-gray-medium);
    stroke-width: 1.5;
    stroke-dasharray: 4;
    transition: var(--transition-smooth);
}

.network-node:hover ~ .network-link {
    stroke-width: 2.5;
}

/* INFOGRAPHIC 2.2: BAR CHART COMPARISON */
.comparison-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

@media (min-width: 768px) {
    .comparison-container {
        grid-template-columns: 1fr 1fr;
        gap: 50px;
    }
}

.comparison-card {
    background-color: #FAF9F6;
    border: 1px solid var(--color-gray-medium);
    border-radius: 6px;
    padding: 30px;
    transition: var(--transition-smooth);
}

.comparison-card:hover {
    background-color: #FFFFFF;
    box-shadow: var(--shadow-premium);
    border-color: var(--color-jade);
}

.comp-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 30px;
    background-color: var(--color-gold-light);
    color: var(--color-forest-dark);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.comp-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.comp-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.comp-item-header {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-gray-dark);
}

.comp-bar-bg {
    width: 100%;
    height: 8px;
    background-color: var(--color-gray-light);
    border-radius: 4px;
    overflow: hidden;
}

.comp-bar-fill {
    height: 100%;
    background-color: var(--color-jade);
    width: 0%;
    border-radius: 4px;
    transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.comp-value-highlight {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-forest-medium);
    line-height: 1;
    margin-top: 4px;
}

/* INFOGRAPHIC 3.1: MINDMAP (TÀI SẢN TRÍ TUỆ) */
.mindmap-wrapper {
    overflow-x: auto;
    padding: 20px;
    background-color: #F9F9F7;
    border-radius: 6px;
    border: 1px solid var(--color-gray-medium);
}

.mindmap-svg {
    min-width: 800px;
    display: block;
    margin: 0 auto;
}

.mindmap-center-rect {
    fill: var(--color-forest-dark);
    stroke: var(--color-gold);
    stroke-width: 2px;
}

.mindmap-node-rect {
    fill: #FFFFFF;
    stroke: var(--color-gray-medium);
    stroke-width: 1.5px;
    rx: 4px;
    ry: 4px;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.mindmap-node-group:hover .mindmap-node-rect {
    stroke: var(--color-gold);
    fill: var(--color-gold-light);
}

.mindmap-node-text {
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 600;
    fill: var(--color-gray-dark);
    dominant-baseline: middle;
    text-anchor: middle;
}

.mindmap-center-text {
    font-family: var(--font-serif);
    font-size: 14px;
    font-weight: 700;
    fill: #FFFFFF;
    dominant-baseline: middle;
    text-anchor: middle;
}

.mindmap-branch-line {
    fill: none;
    stroke: var(--color-gray-medium);
    stroke-width: 1.5px;
    stroke-dasharray: 2;
    transition: var(--transition-smooth);
}

.mindmap-node-group:hover ~ .mindmap-branch-line {
    stroke: var(--color-gold);
    stroke-width: 2.5px;
}

/* ROADMAP MULTI-LEVEL (3.2) */
.roadmap-timeline-vertical {
    position: relative;
    padding: 30px 0;
}

.roadmap-timeline-vertical::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 20px;
    width: 2px;
    background-color: var(--color-gray-medium);
}

@media (min-width: 768px) {
    .roadmap-timeline-vertical::before {
        left: 50%;
        transform: translateX(-50%);
    }
}

.timeline-step {
    position: relative;
    margin-bottom: 40px;
}

.timeline-step::after {
    content: "";
    clear: both;
    display: table;
}

.timeline-dot {
    position: absolute;
    left: 20px;
    top: 10px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--color-ivory);
    border: 3px solid var(--color-gold);
    transform: translateX(-50%);
    z-index: 2;
    transition: var(--transition-smooth);
}

@media (min-width: 768px) {
    .timeline-dot {
        left: 50%;
    }
}

.timeline-step:hover .timeline-dot {
    background-color: var(--color-jade);
    border-color: var(--color-jade);
    transform: translateX(-50%) scale(1.3);
}

.timeline-content {
    position: relative;
    margin-left: 45px;
    background-color: #FAF9F6;
    border: 1px solid var(--color-gray-medium);
    padding: 20px;
    border-radius: 6px;
    width: calc(100% - 45px);
    transition: var(--transition-smooth);
}

@media (min-width: 768px) {
    .timeline-content {
        margin-left: 0;
        width: 44%;
        float: left;
    }
    .timeline-step:nth-child(even) .timeline-content {
        float: right;
    }
}

.timeline-step:hover .timeline-content {
    background-color: #FFFFFF;
    border-color: var(--color-gold);
    box-shadow: 0 10px 25px rgba(201,162,39,0.06);
}

.timeline-step-num {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-gold);
    text-transform: uppercase;
    margin-bottom: 6px;
}

.timeline-step-title {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-forest-dark);
}

/* FOOTER & OUTRO */
.footer-outro {
    position: relative;
    width: 100%;
    padding: 120px 0;
    background-color: var(--color-forest-dark);
    color: #FFFFFF;
    overflow: hidden;
    text-align: center;
}

.footer-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.35;
    filter: brightness(0.5);
    z-index: 1;
}

.footer-overlay-digital {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 30%, rgba(13,62,20,0.8) 100%);
    pointer-events: none;
    z-index: 2;
}

.footer-content {
    position: relative;
    z-index: 5;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

.outro-quote {
    font-family: var(--font-serif);
    font-size: 1.85rem;
    line-height: 1.8;
    font-weight: 500;
    color: #E8F5E9;
    font-style: italic;
    margin-bottom: 50px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.outro-quote::before {
    content: "“";
    font-size: 5rem;
    font-family: var(--font-serif);
    color: var(--color-gold);
    display: block;
    line-height: 1;
    margin-bottom: -20px;
}

.outro-author-block {
    margin-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 30px;
}

.outro-author {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-gold);
}

.outro-author-title {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: #A5D6A7;
    margin-top: 4px;
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background-color: var(--color-forest-dark);
    border: 1px solid var(--color-gold);
    border-radius: 50%;
    color: var(--color-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--color-gold);
    color: var(--color-forest-dark);
    transform: translateY(-3px);
}

/* RESPONSIVE TYPE */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
    }
    .sapo-box {
        font-size: 1.15rem; /* Tăng nhẹ trên mobile */
        padding: 15px 20px;
        margin: 0 10px;
    }
    .section-title {
        font-size: 1.7rem;
        margin: 40px auto 25px auto;
    }
    .outro-quote {
        font-size: 1.35rem;
    }
    .article-body {
        font-size: 1.15rem; /* Giữ cỡ chữ cũ làm mobile size hợp lý */
    }
    .editorial-lead {
        font-size: 1.25rem; /* Co dãn phù hợp với mobile */
    }
    .hero-cover {
        min-height: 550px;
        height: auto;
        padding: 100px 0 50px 0;
    }
    .infographic-wrapper {
        padding: 24px 16px;
        margin: 35px 0;
    }
    .network-container {
        height: auto;
        aspect-ratio: 3 / 2;
    }
    .roadmap-arrow {
        transform: rotate(90deg);
        margin: 5px 0;
    }
    .editorial-img-container {
        margin: 25px 0;
    }
}