:root{--bg:#f3f5f9;--surface:#fff;--surface-2:#f8fafc;--border:#e2e8f0;--border-strong:#cbd5e1;--text:#0f172a;--text-muted:#64748b;--accent:#2563eb;--accent-soft:#dbeafe;--success:#15803d;--success-soft:#dcfce7;--danger:#b91c1c;--danger-soft:#fee2e2;--warning:#b45309;--warning-soft:#fef3c7;--radius:14px;--radius-sm:8px;--shadow-card:0 1px 2px #0f172a0d, 0 10px 30px -12px #0f172a2e;--font:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--mono:ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;margin:0;line-height:1.5}h1,h2,h3,h4,p{margin:0}button{font:inherit;cursor:pointer}input{font:inherit}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-card)}.btn{border:1px solid var(--border-strong);background:var(--surface);color:var(--text);border-radius:10px;justify-content:center;align-items:center;gap:.5rem;padding:.6rem 1.15rem;font-size:.95rem;font-weight:600;line-height:1.2;transition:background .15s,border-color .15s,transform .1s;display:inline-flex}.btn:hover{background:var(--surface-2);border-color:var(--text-muted)}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn:disabled:hover{background:var(--surface);border-color:var(--border-strong)}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{background:color-mix(in srgb, var(--accent) 84%, #000);border-color:color-mix(in srgb, var(--accent) 84%, #000)}.btn-primary:disabled:hover{background:var(--accent);border-color:var(--accent)}.pill{background:var(--accent-soft);color:var(--accent);white-space:nowrap;border-radius:999px;align-items:center;gap:.35rem;padding:.2rem .65rem;font-size:.78rem;font-weight:600;display:inline-flex}.pill.success{background:var(--success-soft);color:var(--success)}.pill.danger{background:var(--danger-soft);color:var(--danger)}.pill.neutral{background:var(--surface-2);color:var(--text-muted);border:1px solid var(--border)}.muted{color:var(--text-muted)}.app-shell{flex-direction:column;min-height:100dvh;display:flex}.app-header{flex-wrap:wrap;align-items:center;gap:.75rem;width:100%;max-width:1080px;margin:0 auto;padding:1.15rem 1.5rem 0;display:flex}.app-header .logo{background:var(--accent);color:#fff;border-radius:9px;flex-shrink:0;place-items:center;width:34px;height:34px;font-size:1rem;font-weight:800;display:grid}.app-header .brand{letter-spacing:-.02em;font-size:1.08rem;font-weight:800}.app-header .tag{color:var(--text-muted);border-left:1px solid var(--border-strong);padding-left:.75rem;font-size:.85rem}.app-main{flex:1;width:100%;max-width:1080px;margin:0 auto;padding:1.35rem 1.5rem 3rem}.app-footer{width:100%;max-width:1080px;color:var(--text-muted);flex-wrap:wrap;justify-content:space-between;gap:1rem;margin:0 auto;padding:0 1.5rem 1.5rem;font-size:.78rem;display:flex}.app-footer a{color:var(--accent);text-decoration:none}.app-footer a:hover{text-decoration:underline}.section-title{letter-spacing:-.01em;font-size:1.02rem;font-weight:700}.hint{color:var(--text-muted);font-size:.86rem}@media (width<=640px){.app-header,.app-main,.app-footer{padding-left:1rem;padding-right:1rem}.app-header .tag{border-left:0;width:100%;padding-left:0}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}