:root{--sg-bg:#f4f2ee;--sg-bg-elevated:#fffcf8;--sg-bg-muted:#ebe7e0;--sg-surface:#fff;--sg-border:rgba(28,25,23,.1);--sg-border-strong:rgba(28,25,23,.18);--sg-fg:#1c1917;--sg-fg-muted:#78716c;--sg-fg-subtle:#a8a29e;--sg-accent:#0f766e;--sg-accent-fg:#fff;--sg-accent-soft:rgba(15,118,110,.12);--sg-ok:#15803d;--sg-warn:#b45309;--sg-danger:#b91c1c;--sg-info:#0369a1;--sg-font-display:"Source Serif 4",Georgia,serif;--sg-font-sans:"DM Sans",system-ui,sans-serif;--sg-radius-md:0.75rem;--sg-radius-lg:1rem;--sg-shadow:0 1px 2px rgba(28,25,23,.06),0 8px 24px rgba(28,25,23,.06)}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:var(--sg-font-sans);background:radial-gradient(1200px 600px at 10% -10%,rgba(15,118,110,.08),transparent 50%),radial-gradient(900px 500px at 100% 0,rgba(28,25,23,.05),transparent 45%),var(--sg-bg);color:var(--sg-fg);min-height:100vh}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}h1,h2,h3{font-family:var(--sg-font-display);font-weight:600;letter-spacing:-.02em}.container{width:min(1120px,calc(100% - 2rem));margin-inline:auto}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:44px;padding:.65rem 1.1rem;border-radius:.7rem;border:1px solid transparent;background:var(--sg-accent);color:var(--sg-accent-fg);cursor:pointer;transition:transform .15s ease,opacity .15s ease}.btn:hover{transform:translateY(-1px)}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}.btn.secondary{background:var(--sg-surface);color:var(--sg-fg);border-color:var(--sg-border-strong)}.btn.ghost{background:transparent;color:var(--sg-fg);border-color:transparent}.input{width:100%;min-height:44px;padding:.65rem .85rem;border-radius:.7rem;border:1px solid var(--sg-border-strong)}.card,.input{background:var(--sg-surface)}.card{border:1px solid var(--sg-border);border-radius:var(--sg-radius-lg);box-shadow:var(--sg-shadow);padding:1rem}.muted{color:var(--sg-fg-muted)}.badge{display:inline-flex;align-items:center;padding:.2rem .55rem;border-radius:999px;background:var(--sg-accent-soft);color:var(--sg-accent);font-size:.75rem;font-weight:600}.stack{display:grid;grid-gap:.75rem;gap:.75rem}.row{display:flex;gap:.75rem;flex-wrap:wrap;align-items:center}.error{color:var(--sg-danger);font-size:.9rem}@keyframes fadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.fade-up{animation:fadeUp .35s ease both}