:root {
  --bg: #07111f;
  --panel: rgba(15, 23, 42, 0.88);
  --panel-strong: rgba(12, 19, 35, 0.96);
  --text: #f5f5f5;
  --muted: #9ca3af;
  --accent: #7dd3fc;
  --accent-2: #60a5fa;
  --warn: #f59e0b;
}
* { box-sizing: border-box; }
body {
font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
margin: 0;
padding: 0;
background: linear-gradient(135deg, var(--bg), #111827 60%, #0f172a);
color: var(--text);
}
header {
padding: 2.3rem 1.2rem 1.3rem;
text-align: center;
background: radial-gradient(circle at top, rgba(96, 165, 250, 0.28) 0, rgba(7, 17, 31, 0.95) 55%);
color: #e5e7eb;
}
.hero-wrap {
max-width: 1120px;
margin: 0 auto;
display: grid;
grid-template-columns: 1.18fr 0.82fr;
gap: 1.2rem;
align-items: center;
}
.hero-copy h1 {
margin: 0;
font-size: clamp(1.8rem, 3vw, 2.7rem);
letter-spacing: 0.06em;
text-transform: uppercase;
}
.hero-copy p {
margin-top: 0.8rem;
max-width: 700px;
margin-left: auto;
margin-right: auto;
font-size: 1rem;
color: #cbd5f5;
}
.hero-visual {
background: rgba(255,255,255,0.04);
border: 1px solid rgba(125, 211, 252, 0.24);
border-radius: 20px;
padding: 1rem;
box-shadow: 0 20px 60px rgba(8, 15, 28, 0.35);
animation: float 4s ease-in-out infinite;
}
.hero-visual img {
width: 100%;
display: block;
border-radius: 14px;
}
main {
max-width: 1120px;
margin: 0 auto;
padding: 2rem 1.5rem 3rem;
line-height: 1.6;
}
section {
margin-bottom: 2.2rem;
background: var(--panel);
border-radius: 16px;
padding: 1.5rem 1.6rem;
border: 1px solid rgba(148, 163, 184, 0.3);
box-shadow: 0 14px 30px rgba(3, 10, 24, 0.25);
}
h2 {
margin-top: 0;
font-size: 1.4rem;
color: var(--accent);
}
h3 {
font-size: 1.08rem;
margin-top: 1.2rem;
color: #bfdbfe;
}
p {
margin: 0.4rem 0 0.8rem;
}
.equation {
font-family: "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
background: rgba(15, 23, 42, 0.9);
border-radius: 8px;
padding: 0.6rem 0.8rem;
margin: 0.6rem 0 1rem;
border: 1px solid rgba(148, 163, 184, 0.5);
color: #e5e7eb;
overflow-x: auto;
}
.tagline {
font-size: 0.95rem;
text-transform: uppercase;
letter-spacing: 0.12em;
color: var(--muted);
}
.grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
gap: 1.2rem;
margin-top: 1rem;
}
.pill {
display: inline-block;
padding: 0.2rem 0.6rem;
border-radius: 999px;
background: rgba(59, 130, 246, 0.15);
border: 1px solid rgba(59, 130, 246, 0.6);
font-size: 0.8rem;
text-transform: uppercase;
letter-spacing: 0.08em;
color: #bfdbfe;
margin-bottom: 0.6rem;
}
.card {
background: var(--panel-strong);
border-radius: 12px;
padding: 1rem;
border: 1px solid rgba(125, 211, 252, 0.14);
transition: transform 0.3s ease, border-color 0.3s ease;
}
.card:hover {
transform: translateY(-4px);
border-color: rgba(125, 211, 252, 0.4);
}
.chart-card {
background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(24, 33, 58, 0.95));
padding: 1rem;
border-radius: 14px;
margin-top: 1rem;
border: 1px solid rgba(125, 211, 252, 0.18);
}
.chart {
position: relative;
height: 220px;
display: flex;
align-items: flex-end;
gap: 0.7rem;
margin-top: 0.8rem;
}
.bar {
flex: 1;
background: linear-gradient(180deg, var(--accent) 0%, var(--accent-2) 100%);
border-radius: 8px 8px 2px 2px;
min-height: 24px;
position: relative;
animation: grow 0.9s ease forwards;
transform-origin: bottom;
}
.bar::after {
content: attr(data-label);
position: absolute;
top: -1.45rem;
left: 50%;
transform: translateX(-50%);
font-size: 0.8rem;
color: #cbd5e1;
}
.bar span {
position: absolute;
bottom: 0.4rem;
left: 50%;
transform: translateX(-50%);
font-size: 0.78rem;
font-weight: 600;
color: #f8fafc;
}
figure {
margin: 0;
}
figcaption {
font-size: 0.9rem;
color: var(--muted);
margin-top: 0.5rem;
}
img.inline-image {
width: 100%;
max-width: 320px;
border-radius: 12px;
display: block;
margin: 0.5rem 0 0.8rem;
border: 1px solid rgba(125, 211, 252, 0.18);
}
.timeline {
display: grid;
gap: 0.9rem;
margin-top: 1rem;
}
.timeline-item {
display: flex;
gap: 0.8rem;
align-items: flex-start;
background: rgba(8, 15, 28, 0.65);
padding: 0.9rem 1rem;
border-radius: 12px;
border: 1px solid rgba(125, 211, 252, 0.16);
}
.timeline-badge {
width: 2rem;
height: 2rem;
border-radius: 50%;
display: grid;
place-items: center;
background: linear-gradient(135deg, var(--accent), var(--accent-2));
color: #04131f;
font-weight: 800;
flex-shrink: 0;
}
.metric-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
gap: 0.8rem;
margin-top: 1rem;
}
.metric {
background: rgba(8, 15, 28, 0.72);
border: 1px solid rgba(125, 211, 252, 0.15);
border-radius: 12px;
padding: 0.9rem;
}
.metric strong {
display: block;
font-size: 1.5rem;
color: var(--accent);
line-height: 1;
margin-bottom: 0.35rem;
}
.matrix {
width: 100%;
border-collapse: collapse;
margin-top: 1rem;
overflow: hidden;
border-radius: 12px;
}
.matrix th,
.matrix td {
text-align: left;
padding: 0.8rem;
border-bottom: 1px solid rgba(148, 163, 184, 0.18);
vertical-align: top;
}
.matrix th {
background: rgba(96, 165, 250, 0.13);
color: #dbeafe;
}
.matrix tr:last-child td {
border-bottom: 0;
}
.checklist {
display: grid;
gap: 0.65rem;
margin-top: 1rem;
padding: 0;
list-style: none;
}
.checklist li {
background: rgba(8, 15, 28, 0.58);
border-left: 3px solid var(--accent);
border-radius: 10px;
padding: 0.75rem 0.85rem;
}
footer {
text-align: center;
padding: 1.5rem;
font-size: 0.85rem;
color: var(--muted);
}
a {
color: var(--accent);
text-decoration: none;
}
a:hover {
text-decoration: underline;
}
.warning {
border-left: 4px solid var(--warn);
padding-left: 0.8rem;
margin-top: 0.8rem;
color: #fed7aa;
}
.note {
background: rgba(125, 211, 252, 0.08);
border: 1px solid rgba(125, 211, 252, 0.18);
border-radius: 12px;
padding: 0.9rem 1rem;
margin-top: 1rem;
color: #dbeafe;
}
.concept-list {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
gap: 0.75rem;
padding: 0;
list-style: none;
}
.concept-list li {
background: rgba(8, 15, 28, 0.58);
border-radius: 10px;
padding: 0.75rem 0.85rem;
border: 1px solid rgba(148, 163, 184, 0.16);
}
.pros-cons {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
gap: 1rem;
margin-top: 1rem;
}
.pros-cons article {
background: rgba(8, 15, 28, 0.68);
border-radius: 12px;
padding: 1rem;
border: 1px solid rgba(148, 163, 184, 0.18);
}
.pros-cons h3 {
margin-top: 0;
}
.pros-cons ul {
padding-left: 1.2rem;
margin-bottom: 0;
}
@keyframes float {
0%, 100% { transform: translateY(0); }
50% { transform: translateY(-6px); }
}
@keyframes grow {
from { transform: scaleY(0.1); opacity: 0.55; }
to { transform: scaleY(1); opacity: 1; }
}
@media (max-width: 820px) {
.hero-wrap { grid-template-columns: 1fr; }
header { padding-top: 1.6rem; }
}