:root{color-scheme:light;--color-brand-700:#0f5649;--color-brand-600:#176b5b;--color-brand-100:#dff2ed;--color-accent-500:#ef8b32;--color-surface:#ffffff;--color-background:#f4f7f5;--color-text:#17221f;--color-text-muted:#5d6b66;--color-border:#d8e1dd;--space-1:0.25rem;--space-2:0.5rem;--space-3:0.75rem;--space-4:1rem;--space-6:1.5rem;--space-8:2rem;--space-12:3rem;--radius-md:0.75rem;--radius-lg:1.25rem;--shadow-card:0 1rem 3rem rgb(24 63 53/10%);--content-max:44rem;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html{background:var(--color-background);color:var(--color-text)}body{min-height:100dvh;margin:0;background:radial-gradient(circle at top right,var(--color-brand-100),transparent 45%),var(--color-background)}button,input,select,textarea{font:inherit}.page-shell{display:grid;min-height:100dvh;place-items:center;padding:max(var(--space-6),env(safe-area-inset-top)) var(--space-4) max(var(--space-6),env(safe-area-inset-bottom))}.foundation-card{width:min(100%,var(--content-max));padding:clamp(var(--space-6),6vw,var(--space-12));border:1px solid var(--color-border);border-radius:var(--radius-lg);background:color-mix(in srgb,var(--color-surface) 94%,transparent);box-shadow:var(--shadow-card)}.eyebrow{margin:0 0 var(--space-3);color:var(--color-brand-600);font-size:.875rem;font-weight:700;letter-spacing:.08em}h1{margin:0;color:var(--color-brand-700);font-size:clamp(2rem,8vw,3.5rem);line-height:1.1}.intro{margin:var(--space-6) 0 var(--space-3);font-size:clamp(1.125rem,4vw,1.375rem);line-height:1.6}.status{margin:0;color:var(--color-text-muted);line-height:1.7}.start-link{display:inline-flex;min-height:3.25rem;align-items:center;justify-content:center;margin-top:var(--space-6);padding:.75rem 1.5rem;border-radius:999px;background:#9fe870;color:#163300;font-weight:800;text-decoration:none;transition:transform .15s ease}.start-link:hover{transform:scale(1.03)}