:root {
    --bg: #080F1A;
    --card: #111B2E;
    --card-hover: #162036;
    --border: #1C2C45;
    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --secondary: #10B981;
    --secondary-hover: #059669;
    --text: #F0F4F8;
    --text-secondary: #C1CCD9;
    --muted: #7B8FA8;
    --danger: #EF4444;
    --warning: #F59E0B;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg); color: var(--text); line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 {
    font-family: 'Sora', sans-serif; font-weight: 600; line-height: 1.3; color: var(--text);
}
h1 { font-size: 2.25rem; font-weight: 700; margin-bottom: 1rem; }
h2 { font-size: 1.5rem; margin-top: 2.5rem; margin-bottom: 1rem; }
h3 { font-size: 1.2rem; margin-top: 2rem; margin-bottom: 0.75rem; }
p { margin-bottom: 1rem; color: var(--text-secondary); }
a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--secondary); }
ul, ol { margin-bottom: 1rem; padding-left: 1.5rem; color: var(--text-secondary); }
li { margin-bottom: 0.4rem; }
strong { color: var(--text); font-weight: 600; }
em { color: var(--text-secondary); }
code, .mono { font-family: 'JetBrains Mono', monospace; font-size: 0.9em; }
img { max-width: 100%; height: auto; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
.content-container { max-width: 780px; margin: 0 auto; padding: 0 1.5rem; }

.site-header {
    background: rgba(8, 15, 26, 0.95); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; padding: 0.75rem 0;
}
.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    max-width: 1100px; margin: 0 auto; padding: 0 1.5rem;
}
.logo { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--text); }
.logo-icon {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 8px; display: flex; align-items: center; justify-content: center;
}
.logo-icon svg { width: 20px; height: 20px; }
.logo-text { font-family: 'Sora', sans-serif; font-weight: 700; font-size: 1.25rem; color: var(--text); }
.nav-links { display: flex; gap: 1.5rem; align-items: center; }
.nav-links a { color: var(--muted); font-size: 0.9rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-toggle { display: none; background: none; border: none; color: var(--text); cursor: pointer; padding: 0.5rem; }

.hero { padding: 4rem 0 3rem; border-bottom: 1px solid var(--border); }
.hero-badge {
    display: inline-block; background: rgba(59, 130, 246, 0.12); color: var(--primary);
    padding: 0.35rem 0.9rem; border-radius: 20px; font-size: 0.8rem; font-weight: 500;
    margin-bottom: 1.25rem; border: 1px solid rgba(59, 130, 246, 0.2);
}
.hero h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--text), var(--text-secondary));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    max-width: 700px;
}
.hero-subtitle { font-size: 1.15rem; color: var(--muted); max-width: 600px; margin-top: 1rem; line-height: 1.7; }

.card {
    background: var(--card); border: 1px solid var(--border); border-radius: 12px;
    padding: 1.5rem; transition: background 0.2s, border-color 0.2s;
}
.card:hover { background: var(--card-hover); border-color: rgba(59, 130, 246, 0.3); }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.25rem; margin: 1.5rem 0; }

.callout {
    background: var(--card); border-left: 4px solid var(--primary);
    border-radius: 0 8px 8px 0; padding: 1.25rem 1.5rem; margin: 1.5rem 0;
}
.callout-info { border-left-color: var(--primary); }
.callout-warning { border-left-color: var(--warning); }
.callout-green { border-left-color: var(--secondary); }
.callout strong { display: block; margin-bottom: 0.3rem; }

.table-responsive { overflow-x: auto; margin: 1.5rem 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
thead { background: var(--card); }
th {
    text-align: left; padding: 0.75rem 1rem; font-family: 'Sora', sans-serif; font-weight: 600;
    font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px;
    color: var(--muted); border-bottom: 2px solid var(--border);
}
td { padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
tr:hover td { background: rgba(59, 130, 246, 0.04); }

.btn {
    display: inline-block; padding: 0.75rem 1.5rem; border-radius: 8px;
    font-family: 'Sora', sans-serif; font-weight: 600; font-size: 0.9rem;
    text-decoration: none; cursor: pointer; border: none; transition: all 0.2s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; }
.btn-secondary { background: transparent; color: var(--primary); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--primary); }

.calc-section { margin: 2rem 0; }
.calc-form {
    background: var(--card); border: 1px solid var(--border); border-radius: 12px;
    padding: 2rem; margin: 1.5rem 0;
}
.form-group { margin-bottom: 1.25rem; }
.form-group label {
    display: block; font-family: 'Sora', sans-serif; font-weight: 500;
    font-size: 0.85rem; color: var(--muted); margin-bottom: 0.4rem;
    text-transform: uppercase; letter-spacing: 0.3px;
}
.form-group input, .form-group select {
    width: 100%; padding: 0.7rem 1rem; background: var(--bg);
    border: 1px solid var(--border); border-radius: 8px; color: var(--text);
    font-family: 'JetBrains Mono', monospace; font-size: 1rem; transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--primary); }

.result-box {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(16, 185, 129, 0.08));
    border: 1px solid rgba(59, 130, 246, 0.2); border-radius: 12px;
    padding: 2rem; margin: 1.5rem 0; text-align: center;
}
.result-value {
    font-family: 'Sora', sans-serif; font-size: 2.5rem; font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.result-label { color: var(--muted); font-size: 0.9rem; margin-top: 0.3rem; }

.fund-meta {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem; margin: 1.5rem 0;
}
.fund-stat {
    background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 1rem 1.25rem;
}
.fund-stat-label {
    font-size: 0.75rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px;
    font-family: 'Sora', sans-serif; font-weight: 500;
}
.fund-stat-value {
    font-family: 'JetBrains Mono', monospace; font-size: 1.15rem; font-weight: 500;
    color: var(--text); margin-top: 0.25rem;
}

.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin: 1.5rem 0; }
.pros-list, .cons-list {
    background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem;
}
.pros-list h3 { color: var(--secondary); }
.cons-list h3 { color: var(--danger); }
.pros-list li::marker { color: var(--secondary); }
.cons-list li::marker { color: var(--danger); }

.disclaimer {
    background: var(--card); border: 1px solid var(--border); border-radius: 8px;
    padding: 1.25rem 1.5rem; margin: 2.5rem 0; font-size: 0.82rem; color: var(--muted); line-height: 1.6;
}

.site-footer { border-top: 1px solid var(--border); padding: 3rem 0 2rem; margin-top: 4rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
.footer-brand .logo { margin-bottom: 0.75rem; }
.footer-desc { color: var(--muted); font-size: 0.85rem; max-width: 280px; }
.footer-col h4 {
    font-family: 'Sora', sans-serif; font-size: 0.8rem; text-transform: uppercase;
    letter-spacing: 0.5px; color: var(--muted); margin-bottom: 0.75rem;
}
.footer-col a { display: block; color: var(--text-secondary); font-size: 0.88rem; padding: 0.2rem 0; transition: color 0.2s; }
.footer-col a:hover { color: var(--primary); }
.footer-network { border-top: 1px solid var(--border); padding-top: 1.5rem; margin-top: 1rem; }
.footer-network-label {
    font-family: 'Sora', sans-serif; font-size: 0.7rem; text-transform: uppercase;
    letter-spacing: 1px; color: var(--muted); margin-bottom: 0.5rem;
}
.footer-network-links { display: flex; flex-wrap: wrap; gap: 0.4rem 1.25rem; }
.footer-network-links a { color: var(--muted); font-size: 0.82rem; transition: color 0.2s; }
.footer-network-links a:hover { color: var(--primary); }
.footer-bottom {
    border-top: 1px solid var(--border); padding-top: 1.5rem;
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem;
    font-size: 0.8rem; color: var(--muted);
}

.breadcrumb { padding: 1rem 0 0; font-size: 0.82rem; color: var(--muted); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { margin: 0 0.4rem; }

.guide-list { list-style: none; padding: 0; margin: 1.5rem 0; }
.guide-list li { border-bottom: 1px solid var(--border); padding: 1rem 0; }
.guide-list li:last-child { border-bottom: none; }
.guide-list a { font-family: 'Sora', sans-serif; font-weight: 600; font-size: 1.05rem; color: var(--text); }
.guide-list a:hover { color: var(--primary); }
.guide-list p { font-size: 0.88rem; margin: 0.3rem 0 0; color: var(--muted); }

/* compare-specific */
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin: 1.5rem 0; }
.compare-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; }
.compare-card h3 { margin-top: 0; font-size: 1.1rem; }
.winner { border-color: var(--secondary); background: rgba(16, 185, 129, 0.05); }
.highlight-val { color: var(--secondary); font-family: 'JetBrains Mono', monospace; font-weight: 500; }
.worse-val { color: var(--danger); font-family: 'JetBrains Mono', monospace; }

/* segment cards */
.segment-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.segment-card {
    background: var(--card); border: 1px solid var(--border); border-radius: 10px;
    padding: 1.25rem; text-decoration: none; transition: all 0.2s;
}
.segment-card:hover { border-color: var(--primary); background: var(--card-hover); }
.segment-card-title { font-family: 'Sora', sans-serif; font-weight: 600; color: var(--text); font-size: 0.95rem; }
.segment-card-desc { font-size: 0.82rem; color: var(--muted); margin-top: 0.3rem; }

/* collapsible */
details { margin-bottom: 0.75rem; }
details summary {
    cursor: pointer; padding: 0.75rem 1rem; background: var(--card); border: 1px solid var(--border);
    border-radius: 8px; font-family: 'Sora', sans-serif; font-weight: 600; font-size: 0.95rem;
    color: var(--text); list-style: none;
}
details summary::-webkit-details-marker { display: none; }
details summary::before { content: '▸ '; color: var(--primary); }
details[open] summary::before { content: '▾ '; }
details[open] summary { border-radius: 8px 8px 0 0; border-bottom: none; }
details .detail-content {
    border: 1px solid var(--border); border-top: none; border-radius: 0 0 8px 8px;
    padding: 1rem; background: var(--card);
}

@media (max-width: 768px) {
    .hero h1 { font-size: 1.75rem; }
    .hero { padding: 2.5rem 0 2rem; }
    .header-inner { flex-wrap: wrap; }
    .nav-links { display: none; width: 100%; flex-direction: column; gap: 0.5rem; padding-top: 1rem; }
    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .card-grid { grid-template-columns: 1fr; }
    .pros-cons { grid-template-columns: 1fr; }
    .compare-grid { grid-template-columns: 1fr; }
    .result-value { font-size: 2rem; }
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.3rem; }
    .fund-meta { grid-template-columns: 1fr 1fr; }
    .segment-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
    .fund-meta { grid-template-columns: 1fr; }
}