:root {
    --bg-main: #ffffff; 
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --accent-green: #059669;
    --accent-dark-green: #064e3b;
    --accent-blue: #2563eb;
    --accent-red: #ef4444;
    --accent-gray: #e2e8f0;
    
    --font-title: 'Phudu', cursive;
    --font-body: 'Roboto', sans-serif;
    
    --w-max: 1920px;
    --w-title: 1280px;
    --w-subtitle: 1080px;
    --w-text: 660px;
    --w-image: 1280px;
}

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

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background-color: var(--bg-main);
    line-height: 1.8;
    overflow-x: hidden;
    padding-top: 45px;
}

.sp-sticky-header {
    position: fixed; top: 0; left: 0; width: 100%; height: 45px;
    background-color: #000; display: flex; align-items: center; justify-content: space-between;
    z-index: 99999; box-shadow: 0 2px 5px rgba(0,0,0,0.5); font-family: Arial, sans-serif;
}
.left-group { display: flex; align-items: center; height: 100%; }
.sp-back-to-k14 {
    display: flex; align-items: center; justify-content: center;
    width: 45px; height: 45px; background-color: #007f74; color: white;
    text-decoration: none; font-size: 18px; transition: background 0.3s; cursor: pointer;
}
.sp-back-to-k14:hover { background-color: #00665d; }
.sp-mag-logo { margin-left: 15px; display: flex; align-items: center; text-decoration: none; }
.sp-mag-logo img { height: 24px; width: auto; display: block; }
.center-logo {
    position: absolute; left: 50%; transform: translateX(-50%);
    pointer-events: none; user-select: none; display: flex; align-items: center; justify-content: center;
}
.center-logo img { height: 26px; width: auto; display: block; }
.right-group { display: flex; align-items: center; padding-right: 15px; }
.fb-custom-btn {
    display: flex; align-items: center; gap: 6px; color: white; text-decoration: none;
    font-size: 13px; font-family: Helvetica, Arial, sans-serif; font-weight: bold;
    cursor: pointer; opacity: 0.9; transition: opacity 0.2s;
}
.fb-custom-btn:hover { opacity: 1; text-decoration: underline; }
.fb-custom-btn i { font-size: 15px; }
@media (max-width: 600px) { .center-logo { display: none; } }

.wrapper-1920 {
    max-width: var(--w-max);
    margin: 0 auto;
    position: relative;
    background: #fff;
    box-shadow: 0 0 50px rgba(0,0,0,0.05);
    padding-bottom: 80px;
}

.col-text { max-width: var(--w-text); margin: 0 auto; padding: 0 20px; }
.col-subtitle { max-width: var(--w-subtitle); margin: 0 auto; padding: 0 20px; }
.col-chart-wide { max-width: 1280px; margin: 60px auto; padding: 0 20px; }

.cover-title-container {
    width: 100%;
    max-width: 1280px;
    margin: 60px auto 40px;
    text-align: center;
    animation: gentleShake 4s ease-in-out infinite;
    transform-origin: center center;
}

.main-title {
    font-family: var(--font-title);
    font-size: 3.5rem;
    line-height: 1.2;
    color: var(--accent-green);
    text-transform: uppercase;
    margin-bottom: 20px;
}

.sub-title {
    font-family: var(--font-title);
    font-size: 2rem;
    color: var(--text-primary);
}

@keyframes gentleShake {
    0% { transform: rotate(0deg) scale(1); }
    25% { transform: rotate(0.3deg) scale(1.005); }
    50% { transform: rotate(0deg) scale(1); }
    75% { transform: rotate(-0.3deg) scale(1.005); }
    100% { transform: rotate(0deg) scale(1); }
}

h2, h3 {
    font-family: var(--font-title); font-weight: 700; 
    color: var(--text-primary); text-align: center; 
    position: relative;
}

h2 { font-size: 42px; margin-top: 80px; margin-bottom: 30px; }
h3 { font-size: 32px; margin-top: 60px; margin-bottom: 25px; }
h4 { font-family: var(--font-title); font-size: 1.5rem; margin-top: 40px; margin-bottom: 15px; color: var(--accent-dark-green); }

h2::after, h3::after {
    content: ''; display: block; width: 80px; height: 6px;
    background: var(--accent-green); margin: 15px auto 0;
}

p { margin-bottom: 1.5rem; font-size: 1.15rem; color: #2d3748; text-align: justify; }

strong { color: var(--text-primary); font-weight: 900; }
span[style] { font-weight: bold; color: var(--accent-green); }
.highlight-data { color: var(--accent-green); font-weight: 900; }

figure { 
    max-width: var(--w-image); 
    margin: 60px auto; 
    text-align: center; 
    padding: 0 20px;
    width: 100%;
}
figure img { 
    width: 100%; 
    height: auto; 
    border-radius: 12px; 
    box-shadow: 0 10px 30px -10px rgba(0,0,0,0.15); 
    display: block;
}
figcaption { font-size: 0.9rem; color: #64748b; margin-top: 15px; font-style: italic; }

@media (max-width: 1280px) {
    figure { padding: 0; margin-left: 0; margin-right: 0; }
    figure img { border-radius: 0; }
}

.chart-box {
    background: #f8fafc; padding: 30px;
    border-radius: 20px; border: 1px solid #edf2f7;
    margin-bottom: 30px;
}
.bar-group { margin-bottom: 15px; }
.bar-label { display: flex; justify-content: space-between; margin-bottom: 6px; font-weight: 700; font-family: var(--font-title); font-size: 0.9rem;}
.bar-bg { height: 14px; background: #e2e8f0; border-radius: 7px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 7px; width: 0; transition: width 1.5s ease-out; }

.bg-vinfast, .bg-vf { background-color: var(--accent-green); }
.bg-honda { background-color: var(--accent-red); }
.bg-selex { background-color: #f97316; }

.pain-point-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 4px;
    background: #e2e8f0; border-radius: 24px; overflow: hidden;
    margin-top: 20px;
}
.pain-item { padding: 40px; text-align: center; color: white; }
.pain-swap { background: var(--accent-green); }
.pain-charge { background: #64748b; }
.pain-time { font-family: var(--font-title); font-size: 3.5rem; font-weight: 900; line-height: 1; margin: 10px 0; }
.pain-desc { font-size: 1rem; opacity: 0.9; }

.global-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 30px; margin-top: 40px; }
.card { background: #f1f5f9; padding: 30px; border-radius: 20px; border: 1px solid #e2e8f0; text-align: left; }
.card-num { font-family: var(--font-title); font-size: 2.5rem; color: var(--accent-blue); display: block; line-height: 1.2;}
.card-label { font-weight: 900; font-size: 1.2rem; margin-bottom: 12px; display: block; color: var(--accent-dark-green); }
.card-sub { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.5; }
.card-meta { margin-top: 15px; padding-top: 15px; border-top: 1px dashed #cbd5e1; font-size: 0.85rem; }

.adv-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; margin: 40px 0; }
.adv-item { text-align: center; padding: 25px; border-radius: 16px; background: #f0fdf4; border: 1px solid #d1fae5; }
.adv-item i { font-size: 2.5rem; color: var(--accent-green); margin-bottom: 15px; }
.adv-item h4 { font-family: var(--font-title); margin-bottom: 10px; font-size: 1.1rem; }
.adv-item p { font-size: 0.9rem; line-height: 1.5; color: var(--text-secondary); }

.table-container { overflow-x: auto; margin: 2rem 0; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05); border-radius: 12px; }
.custom-table { width: 100%; border-collapse: collapse; min-width: 600px; }
.custom-table th { background: var(--accent-green); color: white; padding: 15px; text-align: left; font-family: var(--font-title); }
.custom-table td { padding: 15px; border-bottom: 1px solid #eee; vertical-align: top; }
.custom-table tr:nth-child(even) { background: #f9fafb; }
.custom-table td:nth-child(1) { font-weight: bold; }
.price-text { font-family: var(--font-title); color: var(--accent-green); font-weight: 700; }

.fade-in { opacity: 0; transform: translateY(20px); transition: 0.8s; }
.fade-in.visible { opacity: 1; transform: none; }

@media (max-width: 600px) {
    .main-title { font-size: 2.2rem; }
    .sub-title { font-size: 1.5rem; }
    .pain-point-grid { grid-template-columns: 1fr; }
}