:root {
    --bg: #0f172a;
    --panel: #111827;
    --panel-2: #1e293b;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --line: #334155;
    --accent: #60a5fa;
    --accent-2: #93c5fd;
    --max: 1100px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover { text-decoration: underline; }

.navbar {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(2, 6, 23, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
}

.nav-inner {
    max-width: var(--max);
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.brand {
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #fff;
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    font-size: 14px;
}

.hero {
    border-bottom: 1px solid var(--line);
    background: linear-gradient(180deg, #0b1220 0%, #0f172a 100%);
}

.hero-inner {
    max-width: var(--max);
    margin: 0 auto;
    padding: 56px 20px 42px;
}

.eyebrow {
    color: var(--accent-2);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 14px;
}

h1 {
    margin: 0 0 16px;
    font-size: clamp(32px, 5vw, 52px);
    line-height: 1.05;
}

.hero p {
    max-width: 780px;
    color: var(--muted);
    font-size: 18px;
    margin: 0;
}

.wrapper {
    max-width: var(--max);
    margin: 0 auto;
    padding: 32px 20px 70px;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin: 0 0 34px;
}

.card {
    background: linear-gradient(180deg, rgba(30,41,59,0.95), rgba(15,23,42,0.95));
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 18px;
}

.card h3 {
    margin: 0 0 8px;
    font-size: 16px;
}

.card p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.section {
    margin-top: 38px;
}

.section h2 {
    font-size: 28px;
    margin: 0 0 10px;
}

.section > p {
    color: var(--muted);
    max-width: 900px;
}

.timeline {
    margin-top: 24px;
    display: grid;
    gap: 18px;
}

.era {
    display: grid;
    grid-template-columns: 170px 1fr;
    gap: 18px;
    align-items: start;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(15, 23, 42, 0.85);
}

.era-year {
    color: var(--accent-2);
    font-weight: 700;
    font-size: 18px;
    letter-spacing: 0.02em;
}

.era h3 {
    margin: 0 0 10px;
    font-size: 22px;
}

.era p {
    margin: 0 0 12px;
    color: var(--muted);
}

.pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 10px 0 12px;
}

.pill {
    display: inline-block;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid #3b82f6;
    color: #dbeafe;
    font-size: 12px;
    background: rgba(37, 99, 235, 0.12);
}

ul {
    margin: 10px 0 0 18px;
    padding: 0;
}

li { margin-bottom: 6px; }

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: 16px;
    margin-top: 18px;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
    background: rgba(15, 23, 42, 0.85);
}

th, td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

th {
    background: rgba(30, 41, 59, 0.95);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent-2);
}

td { color: var(--muted); }

.takeaway {
    margin-top: 30px;
    padding: 22px;
    border-radius: 18px;
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(30,41,59,0.95), rgba(15,23,42,0.95));
}

.footer {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 20px 42px;
    color: #64748b;
    font-size: 14px;
}
.gallery {
  display: flex;
  justify-content: space-around; 
  gap: 10px; 
}
.gallery img {
  width: 30%; 
}
@media (max-width: 800px) {
    .era {
    grid-template-columns: 1fr;
    }
}