:root{--navy-900: #060b14;--navy-850: #091120;--navy-800: #0c1729;--navy-750: #101f36;--navy-700: #142743;--navy-600: #1b3355;--line: #1a2c49;--line-strong: #26406a;--text: #f1f5fb;--text-muted: #9db0cd;--text-faint: #6c819f;--accent: #3d8bfd;--accent-hover: #5b9eff;--accent-deep: #1c65cc;--accent-soft: rgba(61, 139, 253, .14);--accent-line: rgba(61, 139, 253, .45);--success: #3ecf8e;--success-soft: rgba(62, 207, 142, .12);--danger: #ff6b6b;--danger-soft: rgba(255, 107, 107, .1);--danger-line: rgba(255, 107, 107, .38);--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.5rem;--space-6: 2rem;--space-7: 3rem;--radius-sm: .375rem;--radius: .625rem;--radius-lg: .875rem;--radius-pill: 999px;--shadow-sm: 0 1px 2px rgba(2, 6, 14, .4);--shadow: 0 12px 28px -12px rgba(2, 6, 14, .7);--control-height: 2.75rem;--navbar-height: 4.25rem;--content-width: 76rem;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-numeric: "SF Mono", "JetBrains Mono", "Cascadia Mono", Consolas, monospace}*,*:before,*:after{box-sizing:border-box}html{min-height:100%;-webkit-text-size-adjust:100%}body{margin:0;padding-top:var(--navbar-height);min-height:100vh;font-family:var(--font-sans);font-size:1rem;line-height:1.55;color:var(--text);background-color:var(--navy-900);background-image:radial-gradient(60rem 32rem at 12% -8%,rgba(61,139,253,.16),transparent 60%),radial-gradient(48rem 28rem at 92% 4%,rgba(28,101,204,.12),transparent 62%);background-attachment:fixed;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4{line-height:1.2;letter-spacing:-.015em;text-wrap:balance}table,input[type=number],.numeric{font-variant-numeric:tabular-nums}a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:.2em}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}::selection{background:var(--accent-soft)}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{border:2px solid transparent;border-radius:var(--radius-pill);background-clip:content-box;background-color:var(--line-strong)}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}.app-shell{min-height:100vh}.app-content{margin:0 auto;max-width:var(--content-width);padding:var(--space-6) var(--space-4) var(--space-7)}.page-section{width:100%}.page-feedback{display:flex;align-items:center;gap:var(--space-2);border:1px solid var(--line);border-radius:var(--radius);background:var(--navy-750);padding:var(--space-3) var(--space-4);color:var(--text-muted);font-size:.925rem}.page-feedback--error{border-color:var(--danger-line);background:var(--danger-soft);color:#ffc9c9}.page-feedback--success{border-color:#3ecf8e66;background:var(--success-soft);color:#a9f0cd}.welcome{display:grid;gap:var(--space-6);max-width:62rem;margin:0 auto;padding-top:var(--space-5)}.welcome__eyebrow{margin:0;color:var(--accent);font-size:.75rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase}.welcome__title{margin:var(--space-2) 0 0;font-size:clamp(2rem,4.5vw,2.9rem);letter-spacing:-.03em}.welcome__lead{margin:var(--space-4) 0 0;max-width:44rem;color:var(--text-muted);font-size:1.075rem}.welcome__features{display:grid;gap:var(--space-4);grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));list-style:none;margin:0;padding:0}.welcome__feature{display:grid;gap:var(--space-2);align-content:start;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--navy-800);padding:var(--space-4)}.welcome__feature h2{margin:0;font-size:1.05rem}.welcome__feature p{margin:0;color:var(--text-muted);font-size:.925rem}.welcome__hint{margin:0;color:var(--text-faint);font-size:.925rem}