.landing{min-height:100vh;display:flex;flex-direction:column}.landing__header{border-bottom:1px solid var(--color-border);padding:24px 20px}.landing__header-inner{max-width:960px;margin:0 auto;display:flex;align-items:center;gap:16px}.landing__logo{font-size:2.25rem;line-height:1;flex-shrink:0}.landing__title{font-size:1.5rem;font-weight:700;letter-spacing:-.02em;line-height:1.2}.landing__subtitle{font-size:.9rem;color:var(--color-text-muted);margin-top:2px}.landing__main{flex:1;padding:32px 20px;max-width:960px;width:100%;margin:0 auto}.concept-grid{display:flex;flex-direction:column;gap:12px}.concept-card{display:flex;align-items:flex-start;gap:16px;padding:20px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);cursor:pointer;transition:background var(--transition),border-color var(--transition),box-shadow var(--transition),transform var(--transition)}.concept-card:hover{background:var(--color-surface-hover);border-color:var(--color-accent);box-shadow:0 0 0 1px var(--color-accent),0 4px 24px var(--color-accent-glow);transform:translateY(-1px)}.concept-card__icon{font-size:2rem;line-height:1;flex-shrink:0;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--color-bg);border-radius:10px;border:1px solid var(--color-border)}.concept-card__body{flex:1;min-width:0}.concept-card__meta{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:6px}.concept-card__title{font-size:1.05rem;font-weight:600;letter-spacing:-.01em;line-height:1.3}.concept-card__date{font-size:.78rem;color:var(--color-text-muted);white-space:nowrap}.concept-card__description{font-size:.88rem;color:var(--color-text-muted);line-height:1.55}.concept-card__arrow{font-size:1.1rem;color:var(--color-text-muted);flex-shrink:0;transition:transform var(--transition),color var(--transition);align-self:center}.concept-card:hover .concept-card__arrow{transform:translate(4px);color:var(--color-accent)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 24px;text-align:center;gap:12px;color:var(--color-text-muted)}.empty-state__icon{font-size:3rem}.empty-state__title{font-size:1.1rem;font-weight:600;color:var(--color-text)}.empty-state__sub{font-size:.88rem;max-width:300px}.landing__footer{border-top:1px solid var(--color-border);padding:16px 20px;text-align:center;font-size:.8rem;color:var(--color-text-muted)}@media (min-width: 768px){.concept-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.concept-card{flex-direction:column;gap:14px}.concept-card__icon{width:52px;height:52px;font-size:2.1rem}.concept-card__arrow{display:none}.concept-card__meta{flex-direction:column;gap:4px}.concept-card__title{font-size:1.1rem}.concept-card__description{font-size:.9rem}}@media (min-width: 1024px){.concept-grid{grid-template-columns:repeat(3,1fr)}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #0f172a;--color-surface: #1e293b;--color-surface-hover: #263349;--color-border: #334155;--color-text: #f1f5f9;--color-text-muted: #94a3b8;--color-accent: #6366f1;--color-accent-glow: rgba(99, 102, 241, .25);--radius: 14px;--transition: .18s ease;font-family:Inter,system-ui,-apple-system,sans-serif}html,body,#root{height:100%}body{background-color:var(--color-bg);color:var(--color-text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.page-loading{display:flex;align-items:center;justify-content:center;height:100vh;color:var(--color-text-muted);font-size:1rem}