*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--teal-50:#f0fdfa;--teal-100:#ccfbf1;--teal-200:#99f6e4;--teal-300:#5eead4;--teal-400:#2dd4bf;--teal-500:#14b8a6;--teal-600:#0d9488;--teal-700:#0f766e;--teal-800:#115e59;--teal-900:#134e4a;--sand-50:#fefce8;--sand-100:#fef9c3;--sand-200:#fef08a;--sand-300:#fde047;--sand-400:#facc15;--sand-500:#eab308;--slate-50:#f8fafc;--slate-100:#f1f5f9;--slate-200:#e2e8f0;--slate-300:#cbd5e1;--slate-400:#94a3b8;--slate-500:#64748b;--slate-600:#475569;--slate-700:#334155;--slate-800:#1e293b;--slate-900:#0f172a;--radius:12px;--radius-sm:8px;--shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.06);--shadow-md:0 4px 12px rgba(0,0,0,.1);--shadow-lg:0 10px 30px rgba(0,0,0,.12);--font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--max-width:1120px}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--slate-800);background:var(--slate-50);line-height:1.6;-webkit-font-smoothing:antialiased}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
.skip-link{position:absolute;top:-100%;left:16px;background:var(--teal-700);color:#fff;padding:8px 16px;border-radius:var(--radius-sm);z-index:100;text-decoration:none;font-weight:600}
.skip-link:focus{top:16px}
.muted{color:var(--slate-500)}
.small{font-size:.85rem}
hr{border:none;border-top:1px solid var(--slate-200);margin:12px 0}

/* Header */
.site-header{background:#fff;border-bottom:1px solid var(--slate-200);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--slate-900);font-weight:700;font-size:1.1rem}
.logo-icon{flex-shrink:0}
.main-nav{display:flex;gap:4px}
.main-nav a{text-decoration:none;color:var(--slate-600);padding:6px 12px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;transition:background .15s,color .15s}
.main-nav a:hover,.main-nav a:focus{background:var(--teal-50);color:var(--teal-700)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:600;cursor:pointer;border:2px solid transparent;transition:all .15s;text-decoration:none;line-height:1.4}
.btn-primary{background:var(--teal-600);color:#fff;border-color:var(--teal-600)}
.btn-primary:hover,.btn-primary:focus{background:var(--teal-700);border-color:var(--teal-700)}
.btn-secondary{background:#fff;color:var(--slate-700);border-color:var(--slate-300)}
.btn-secondary:hover,.btn-secondary:focus{border-color:var(--teal-400);color:var(--teal-700)}
.btn-ghost{background:transparent;color:var(--slate-600);border-color:transparent}
.btn-ghost:hover,.btn-ghost:focus{background:var(--slate-100);color:var(--slate-800)}
.btn-small{padding:6px 14px;font-size:.82rem}
.btn-danger{background:#fff;color:#dc2626;border-color:#fca5a5}
.btn-danger:hover,.btn-danger:focus{background:#fef2f2}

/* Hero */
.hero-section{background:linear-gradient(135deg,var(--teal-600) 0%,var(--teal-800) 100%);color:#fff;padding:60px 0 72px}
.hero-content{max-width:640px}
.hero-content h1{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;line-height:1.2;margin-bottom:12px}
.hero-sub{font-size:1.1rem;opacity:.9;margin-bottom:28px;line-height:1.5}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-actions .btn-primary{background:var(--sand-400);color:var(--slate-900);border-color:var(--sand-400)}
.hero-actions .btn-primary:hover{background:var(--sand-300);border-color:var(--sand-300)}
.hero-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.4)}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.15)}

/* Cards */
.card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin-bottom:20px}
.card h2{font-size:1.15rem;font-weight:700;margin-bottom:16px;color:var(--slate-900)}
.card-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.card-header h2{margin-bottom:0}

/* Form */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:4px}
.field label{font-size:.82rem;font-weight:600;color:var(--slate-600)}
.field input,.field select{padding:10px 12px;border:1px solid var(--slate-300);border-radius:var(--radius-sm);font-size:.95rem;font-family:var(--font);color:var(--slate-800);background:#fff;transition:border-color .15s}
.field input:focus,.field select:focus{outline:none;border-color:var(--teal-500);box-shadow:0 0 0 3px rgba(20,184,166,.15)}

/* Presets */
.presets{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:16px;padding-top:16px;border-top:1px solid var(--slate-100)}
.presets-label{font-size:.82rem;font-weight:600;color:var(--slate-500)}
.preset-btn{padding:4px 12px;border-radius:20px;border:1px solid var(--slate-200);background:var(--slate-50);font-size:.8rem;cursor:pointer;color:var(--slate-600);transition:all .15s}
.preset-btn:hover,.preset-btn:focus{border-color:var(--teal-400);background:var(--teal-50);color:var(--teal-700)}

/* Splitter layout */
.splitter-section{padding:40px 0 20px}
.splitter-layout{display:grid;grid-template-columns:1fr 340px;gap:24px;align-items:start}
.splitter-sidebar{position:relative}
.sticky{position:sticky;top:72px}

/* Members */
.members-list{display:flex;flex-direction:column;gap:12px}
.member-row{display:grid;grid-template-columns:1fr 100px 100px 100px auto;gap:8px;align-items:end;padding:16px;background:var(--slate-50);border-radius:var(--radius-sm);border:1px solid var(--slate-200)}
.member-row .field{margin-bottom:0}
.member-row input{font-size:.88rem;padding:8px 10px}
.member-remove{background:none;border:none;cursor:pointer;color:var(--slate-400);padding:8px;border-radius:var(--radius-sm);transition:color .15s;display:flex;align-items:center;justify-content:center}
.member-remove:hover,.member-remove:focus{color:#dc2626}
.member-remove svg{width:18px;height:18px}
.empty-state{text-align:center;padding:32px;color:var(--slate-400)}
.empty-state svg{margin-bottom:8px}

/* Summary */
.summary-total{display:flex;justify-content:space-between;align-items:center;padding:4px 0}
.summary-label{font-size:.9rem;color:var(--slate-600)}
.summary-value{font-size:1.1rem;font-weight:700;color:var(--slate-900)}
.summary-final .summary-value{font-size:1.3rem;color:var(--teal-700)}
.breakdown-list{display:flex;flex-direction:column;gap:6px}
.breakdown-row{display:flex;justify-content:space-between;align-items:center;font-size:.9rem;padding:6px 0;border-bottom:1px solid var(--slate-100)}
.breakdown-row:last-child{border-bottom:none}
.breakdown-name{font-weight:500;color:var(--slate-700)}
.breakdown-detail{font-size:.75rem;color:var(--slate-400)}
.breakdown-amount{font-weight:700;color:var(--teal-700);white-space:nowrap}

/* Actions */
.action-buttons{display:flex;gap:10px;flex-wrap:wrap}
.action-note{margin-top:10px;font-size:.85rem;color:var(--teal-700);min-height:1.4em}

/* Scenarios */
.scenarios-section{padding:40px 0}
.scenarios-section h2,.history-section h2,.guide-section h2{font-size:1.5rem;font-weight:800;margin-bottom:8px;color:var(--slate-900)}
.section-intro{color:var(--slate-500);margin-bottom:24px;max-width:600px}
.scenario-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.scenario-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;display:flex;flex-direction:column;gap:10px}
.scenario-card h3{font-size:1rem;font-weight:700;color:var(--slate-900)}
.scenario-card p{font-size:.88rem;color:var(--slate-600);flex-grow:1}

/* History */
.history-section{padding:40px 0}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.history-list{display:flex;flex-direction:column;gap:12px}
.history-item{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.history-info{flex:1;min-width:200px}
.history-info h3{font-size:.95rem;font-weight:700;color:var(--slate-900)}
.history-info p{font-size:.82rem;color:var(--slate-500)}
.history-actions{display:flex;gap:8px}
.empty-history{padding:24px;text-align:center}

/* Guide */
.guide-section{padding:40px 0 60px}
.guide-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;margin-top:24px}
.guide-block{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.guide-block h3{font-size:.95rem;font-weight:700;color:var(--teal-700);margin-bottom:8px}
.guide-block p{font-size:.88rem;color:var(--slate-600);line-height:1.6}

/* Footer */
.site-footer{background:var(--slate-900);color:var(--slate-400);padding:40px 0 24px;margin-top:20px}
.footer-inner{display:flex;flex-direction:column;gap:20px}
.footer-brand .logo-text{color:#fff;font-weight:700;font-size:1rem}
.footer-tagline{font-size:.85rem;margin-top:4px}
.footer-nav{display:flex;gap:16px;flex-wrap:wrap}
.footer-nav a{color:var(--slate-400);text-decoration:none;font-size:.85rem;transition:color .15s}
.footer-nav a:hover,.footer-nav a:focus{color:var(--teal-400)}
.footer-meta{font-size:.8rem;border-top:1px solid var(--slate-800);padding-top:16px}
.footer-meta a{color:var(--teal-400);text-decoration:none}
.footer-meta a:hover{text-decoration:underline}

/* Print */
@media print{.site-header,.site-footer,.hero-section,.scenarios-section,.history-section,.guide-section,.actions-card,.presets,.member-remove,.btn{display:none!important}.splitter-layout{display:block}.card{box-shadow:none;border:1px solid #ddd;margin-bottom:12px}.sticky{position:static}}

/* Responsive */
@media(max-width:900px){.splitter-layout{grid-template-columns:1fr}.splitter-sidebar{order:-1}.sticky{position:static}}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}.member-row{grid-template-columns:1fr 1fr}.hero-section{padding:40px 0 48px}.hero-actions{flex-direction:column}.hero-actions .btn{justify-content:center}.action-buttons{flex-direction:column}.action-buttons .btn{justify-content:center}.container{padding:0 16px}}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}