.sd-hero {
    position: relative;
    padding: 8rem 2rem 5rem;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    align-items: center;
    background: radial-gradient(1200px 600px at 20% 0%, rgba(0,255,255,0.15), transparent),
                linear-gradient(180deg, rgba(0, 10, 20, 0.6), rgba(0, 0, 0, 0.6));
}
.sd-hero-content { max-width: 800px; }
.sd-title { font-size: 3rem; line-height: 1.1; letter-spacing: -0.02em; color: #eaffff; }
.sd-subtitle { margin-top: 1rem; font-size: 1.2rem; color: #c8e7e7; }
.sd-cta { margin-top: 2rem; display: flex; gap: 1rem; flex-wrap: wrap; }

.sd-hero-aside { justify-self: end; }
.sd-stats { display: grid; grid-template-columns: repeat(2, minmax(160px, 1fr)); gap: 1rem; }
.sd-stat { background: rgba(0, 50, 60, 0.4); border: 1px solid rgba(0, 255, 255, 0.15); border-radius: 12px; padding: 1rem; }
.sd-stat-key { font-size: 1.6rem; color: #eaffff; }
.sd-stat-val { font-size: 0.9rem; color: #b7dede; }

.sd-section { padding: 4rem 2rem; position: relative; }
.sd-section-inner { max-width: 1200px; margin: 0 auto; }
.sd-h2 { font-size: 2rem; color: #eaffff; margin-bottom: 1.5rem; }
.sd-h2.center { text-align: center; }
.sd-body { margin-top: 0.75rem; color: #cfeeee; }
.sd-list { margin-top: 1rem; color: #cfeeee; display: grid; gap: 0.5rem; }

.sd-grid { display: grid; gap: 1.5rem; }
.sd-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.sd-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.sd-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.sd-card { background: rgba(0, 50, 60, 0.35); border: 1px solid rgba(0, 255, 255, 0.15); border-radius: 14px; padding: 1rem; transition: transform 160ms ease, box-shadow 160ms ease; }
.sd-card:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(0, 255, 255, 0.08); }
.sd-card-title { font-size: 1.1rem; color: #eaffff; }
.sd-card-body { margin-top: 0.5rem; color: #cfeeee; }
.sd-links { margin-top: 0.75rem; }
.sd-link { color: #7ff7ff; text-decoration: none; }
.sd-link:hover { text-decoration: underline; }
.sd-link svg { width: 20px; height: 20px; display: inline-block; vertical-align: middle; }

.sd-chip { background: rgba(0, 60, 70, 0.5); border: 1px solid rgba(0, 255, 255, 0.2); border-radius: 999px; padding: 0.6rem 1rem; color: #eaffff; text-align: center; }

.sd-vision .sd-grid > div:first-child,
.sd-mission .sd-grid > div:first-child { margin-top: 1rem; }

.sd-team .sd-grid.three > * { text-align: center; }
.sd-avatar { width: 150px; height: 150px; border-radius: 12px; overflow: hidden; border: 1px solid rgba(0,255,255,0.18); background: rgba(0,40,50,0.35); margin: 0 auto 0.5rem; }
.sd-avatar img { width: 100%; height: 100%; object-fit: cover; }
.sd-name { font-size: 1.1rem; color: #eaffff; }
.sd-role { font-size: 1rem; color: #cfeeee; }

.sd-screenshot { height: 420; border-radius: 12px; background: linear-gradient(180deg, rgba(0, 50, 60, 0.4), rgba(0, 40, 50, 0.4)); border: 1px dashed rgba(0, 255, 255, 0.25); display: flex; align-items: center; justify-content: center; color: #9cdcdc; }
.sd-screenshot img { width: 100%; height: 100%; object-fit: cover; border-radius: 12px; }
.sd-screens .sd-grid { align-items: stretch; }

@media (min-width: 641px) {
    .sd-team .sd-grid.three { grid-template-columns: repeat(5, minmax(0, 1fr)); }
    .sd-team .sd-grid.three > *:nth-child(1) { grid-column: 1; }
    .sd-team .sd-grid.three > *:nth-child(2) { grid-column: 3; }
    .sd-team .sd-grid.three > *:nth-child(3) { grid-column: 5; }
    .sd-team .sd-grid.three > *:nth-child(4) { grid-column: 2; grid-row: 2; }
    .sd-team .sd-grid.three > *:nth-child(5) { grid-column: 4; grid-row: 2; }
}

/* Timeline */
.sd-timeline { position: relative; }
.sd-flow { display: grid; gap: 2rem; }
.sd-flow-item { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 1.5rem; align-items: center; }
.sd-flow-item:nth-child(even) { grid-template-columns: 1.1fr 0.9fr; }
.sd-flow-item:nth-child(even) .sd-flow-meta { order: 2; }
.sd-flow-item:nth-child(even) .sd-flow-media { order: 1; }
.sd-flow-title { font-size: 1.4rem; color: #eaffff; }
.sd-flow-desc { margin-top: 0.5rem; color: #cfeeee; }
.sd-step { display: inline-block; margin-bottom: 0.5rem; padding: 0.25rem 0.6rem; border: 1px solid rgba(0,255,255,0.3); border-radius: 999px; color: #7ff7ff; font-size: 0.85rem; }
.sd-video { width: 100%; aspect-ratio: 16/9; border-radius: 12px; border: 1px solid rgba(0,255,255,0.18); background: rgba(0,40,50,0.35); }

@media (max-width: 1024px) {
    .sd-hero { grid-template-columns: 1fr; }
    .sd-hero-aside { justify-self: start; }
    .sd-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sd-flow-item, .sd-flow-item:nth-child(even) { grid-template-columns: 1fr; }
    .sd-flow-item:nth-child(even) .sd-flow-meta, .sd-flow-item:nth-child(even) .sd-flow-media { order: initial; }
}
@media (max-width: 640px) {
    .sd-title { font-size: 2.2rem; }
    .sd-grid.three { grid-template-columns: repeat(1, minmax(0, 1fr)); }
    .sd-grid.two { grid-template-columns: repeat(1, minmax(0, 1fr)); }
    .sd-grid.four { grid-template-columns: repeat(1, minmax(0, 1fr)); }
    .sd-screenshot { height: 240px; }
}