:root{--spark-green-primary:#0f7a5c;--spark-green-dark:#0a5e46;--spark-green-success:#1fa971;--spark-charcoal:#2e2e2e;--spark-slate:#6b6f73;--spark-white:#fff;--spark-surface:#f3f5f6;--spark-warning:#e6a23c;--spark-error:#c0392b;--font-sans:"Inter","Segoe UI",system-ui,-apple-system,sans-serif;--color-bg:var(--spark-white);--color-surface:var(--spark-surface);--color-card:var(--spark-surface);--color-text:var(--spark-charcoal);--color-muted:var(--spark-slate);--color-border:#e0e3e5;--color-primary:var(--spark-green-primary);--color-primary-contrast:var(--spark-white);--color-primary-hover:var(--spark-green-dark);--color-selected-bg:#0f7a5c1f;--color-error-bg:#c0392b14;--color-success-bg:#1fa97114;--color-accent:var(--spark-green-primary);--color-success:var(--spark-green-success);--color-error:var(--spark-error);--color-warning:var(--spark-warning);--radius-md:10px;--radius-sm:8px;--shadow-sm:0 1px 2px 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var(--color-primary);background:var(--color-card);box-shadow:var(--shadow-sm);gap:8px;padding:12px;display:grid}.section-nav-title{font-weight:600}.section-nav-links{flex-wrap:wrap;gap:8px;display:flex}.section-nav-link{color:var(--color-text);border-radius:var(--radius-sm);border:1px solid var(--color-border);background:var(--spark-white);padding:6px 12px;text-decoration:none}.section-nav-link:hover{border-color:var(--color-primary);color:var(--color-primary)}.section-nav-link.is-active{border-color:var(--color-primary);background:var(--color-primary);color:var(--color-primary-contrast)}.section-auth{border-radius:var(--radius-md);border:1px solid var(--color-border);border-left:4px solid var(--color-primary);background:var(--color-card);box-shadow:var(--shadow-sm);justify-content:space-between;align-items:center;gap:12px;padding:10px 12px;display:flex}.card-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;display:grid}.card-stack{gap:8px;display:grid}.card-title{font-size:16px;font-weight:600}.card-description{color:var(--color-muted);margin:0}.card-link{color:var(--color-primary);font-weight:600;text-decoration:none}.card{border:1px solid var(--color-border);background:var(--color-card);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);padding:12px}.landing-section-spacing{margin-bottom:16px}.landing-section-spacing.landing-section-top{margin-top:16px;margin-bottom:0}.landing-page .card-stack>section,.landing-page .card-stack>article,.landing-page .card-stack>div{margin:0}.terms-section{margin-bottom:24px}.prose{line-height:1.6}.prose p{margin:0 0 1em}.prose p:last-child{margin-bottom:0}.prose h1,.prose h2,.prose h3{margin:1.25em 0 .5em;font-weight:600}.prose h1{font-size:1.35rem}.prose h2{font-size:1.2rem}.prose h3{font-size:1.1rem}.prose ul,.prose ol{margin:0 0 1em;padding-left:1.5em}.prose a{color:var(--color-primary);text-decoration:none}.prose a:hover{text-decoration:underline}.prose strong{font-weight:600}.prose code{background:var(--color-bg);border-radius:3px;padding:.15em .35em;font-size:.9em}.form-stack{gap:12px;display:grid}.muted-text{color:var(--color-muted);margin:0}.link-button{border-radius:var(--radius-sm);border:1px solid var(--color-primary);color:var(--color-primary);background:0 0;justify-content:center;align-items:center;padding:10px 14px;text-decoration:none;display:inline-flex}.link-button:hover{background:var(--color-selected-bg)}.ghost-button{border:1px solid var(--color-border);background:var(--spark-white);color:var(--color-text);border-radius:var(--radius-sm);cursor:pointer;padding:6px 12px}.ghost-button:hover{background:var(--color-surface)}.btn-primary:not(:disabled):hover{background:var(--color-primary-hover)}.badge{color:var(--color-text);background:#0f7a5c1a;border-radius:999px;align-items:center;padding:4px 10px;font-size:12px;font-weight:600;display:inline-flex}.app-header .session-chip .badge{background:var(--color-primary-hover);color:var(--color-primary-contrast)}.app-header .ghost-button{color:var(--color-primary-contrast);background:0 0;border-color:#fff6}.app-header .ghost-button:hover{background:#fff3}.nav-toggle{color:var(--color-primary-contrast);border-radius:var(--radius-sm);cursor:pointer;background:0 0;border:1px solid #fff6;padding:6px 10px;font-size:18px;line-height:1;display:none}@media (max-width:768px){.app-header{flex-wrap:wrap;gap:10px;padding:12px 16px}.app-brand{flex:1;font-size:16px}.nav-toggle{order:2;justify-content:center;align-items:center;display:flex}.app-nav{flex-direction:column;order:4;gap:4px;width:100%;display:none}.app-nav.is-open{display:flex}.app-nav-link{padding:10px 14px}.app-session{order:3}.session-chip{padding:4px 8px;font-size:13px}.app-main{padding:16px}.page-stack{gap:10px}.page-header{margin-bottom:8px!important;padding-bottom:6px!important}.card-grid{grid-template-columns:1fr;gap:10px}.card-stack{gap:6px}.landing-section-spacing{margin-bottom:10px}.landing-section-spacing.landing-section-top{margin-top:10px}.terms-section{margin-bottom:16px}.section-auth{flex-direction:column;align-items:flex-start;gap:10px}.section-nav-links{flex-direction:column}.section-nav-link{text-align:center}}@media (max-width:480px){.app-main{padding:12px}.form-stack{gap:10px}.page-stack{gap:6px}.page-header{margin-bottom:6px!important;padding-bottom:4px!important}.card-grid{gap:8px}.card-stack{gap:4px}.landing-section-spacing{margin-bottom:6px}.landing-section-spacing.landing-section-top{margin-top:6px}.terms-section{margin-bottom:12px}h1{font-size:1.4rem}h2{font-size:1.1rem}}