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

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #0b1520;
    color: #dde6f0;
    min-height: 100vh;
}

header {
    background: linear-gradient(135deg, #0d2137 0%, #102840 100%);
    border-bottom: 2px solid #00b4d8;
    padding: 20px 40px;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.flag { font-size: 2.5rem; }

header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.5px;
}

header p {
    color: #00b4d8;
    font-size: 0.85rem;
    margin-top: 4px;
    letter-spacing: 1px;
}

.header-right {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.badge-header {
    background: #1a3a55;
    color: #00b4d8;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    border: 1px solid #00b4d8;
    letter-spacing: 0.5px;
}

.tab-nav {
    background: #0d1f30;
    display: flex;
    flex-wrap: wrap;
    padding: 0 40px;
    border-bottom: 1px solid #1e3245;
}

.tab-btn {
    background: none;
    border: none;
    color: #7a9bb5;
    padding: 14px 20px;
    font-size: 0.85rem;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
    letter-spacing: 0.3px;
}

.tab-btn:hover { color: #ffffff; }
.tab-btn.active { color: #00b4d8; border-bottom: 3px solid #00b4d8; }

main {
    max-width: 1400px;
    margin: 32px auto;
    padding: 0 40px;
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.section-header { margin-bottom: 24px; }
.section-header h2 { font-size: 1.2rem; color: #ffffff; font-weight: 600; }
.section-header p { color: #7a9bb5; font-size: 0.85rem; margin-top: 4px; }

.chart-row {
    display: flex;
    gap: 24px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.chart-box {
    background: #0d1f30;
    border: 1px solid #1e3245;
    border-radius: 8px;
    padding: 20px;
    flex: 1;
    min-width: 280px;
}

.chart-box.wide { flex: 1 1 100%; }

.chart-box h3 {
    font-size: 0.85rem;
    color: #7a9bb5;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
    background: #0d1f30;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #1e3245;
}

thead tr { background: #132d45; }

th {
    padding: 12px 16px;
    text-align: left;
    color: #00b4d8;
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    border-bottom: 1px solid #1e3245;
}

td {
    padding: 11px 16px;
    border-bottom: 1px solid #132d45;
    color: #cdd9e5;
}

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #112638; }
tbody tr.best-row { background: #0d2a1a; }
tbody tr.best-row:hover { background: #0f3020; }

.badge {
    padding: 3px 12px;
    border-radius: 12px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.badge.High { background: rgba(192,57,43,0.25); color: #e74c3c; border: 1px solid #e74c3c; }
.badge.Medium { background: rgba(230,126,34,0.2); color: #e67e22; border: 1px solid #e67e22; }
.badge.Low { background: rgba(39,174,96,0.2); color: #27ae60; border: 1px solid #27ae60; }

.info-cards {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.info-card {
    background: #0d1f30;
    border: 1px solid #1e3245;
    border-radius: 8px;
    padding: 16px 24px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 160px;
}

.info-label {
    font-size: 0.75rem;
    color: #7a9bb5;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.info-value {
    font-size: 1rem;
    color: #00b4d8;
    font-weight: 600;
}

.insight-box {
    background: #0d2137;
    border-left: 4px solid #00b4d8;
    border-radius: 4px;
    padding: 16px 20px;
    margin-top: 24px;
    font-size: 0.88rem;
    color: #a8c4d8;
    line-height: 1.6;
}

.insight-box strong { color: #00b4d8; }

.metric-explainer {
    display: flex;
    gap: 16px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.metric-card {
    background: #0d1f30;
    border: 1px solid #1e3245;
    border-radius: 8px;
    padding: 16px 20px;
    flex: 1;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.metric-title {
    font-size: 1rem;
    font-weight: 700;
    color: #00b4d8;
}

.metric-desc {
    font-size: 0.82rem;
    color: #7a9bb5;
    line-height: 1.5;
}

.method-section {
    background: #0d1f30;
    border: 1px solid #1e3245;
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 20px;
}

.method-section h3 {
    font-size: 1rem;
    color: #00b4d8;
    margin-bottom: 12px;
    font-weight: 600;
}

.method-section p {
    font-size: 0.88rem;
    color: #a8c4d8;
    line-height: 1.8;
}

.method-section code {
    background: #132d45;
    color: #f39c12;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.85rem;
    display: inline-block;
    margin-top: 8px;
}

.limitation-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.limitation-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.88rem;
    color: #a8c4d8;
    line-height: 1.6;
}

.lim-badge {
    background: rgba(231,76,60,0.2);
    color: #e74c3c;
    border: 1px solid #e74c3c;
    padding: 2px 10px;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 700;
    white-space: nowrap;
    margin-top: 2px;
}

.future-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.future-item {
    background: #132d45;
    border-radius: 6px;
    padding: 10px 16px;
    font-size: 0.88rem;
    color: #a8c4d8;
    line-height: 1.5;
}

footer {
    text-align: center;
    padding: 24px;
    color: #3a5a75;
    font-size: 0.8rem;
    border-top: 1px solid #1e3245;
    margin-top: 40px;
}