* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    background: #f7f6f3;
    color: #1f2937;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

/* ===== Landing page ===== */
.landing { max-width: 1000px; margin: 0 auto; padding: 5rem 2rem 3rem; }
.hero { text-align: center; margin-bottom: 4rem; }
.logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    color: #6b7280;
}
.logo { font-weight: 600; letter-spacing: -0.01em; }
.logo-tdh { color: #0066b3; }
.logo-tutator { color: #1f2937; }
.logo-sep { color: #d1d5db; font-size: 1.5rem; line-height: 1; }
.hero h1 {
    font-size: 2.75rem;
    margin: 0 0 1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #0f172a;
}
.lede {
    font-size: 1.0625rem;
    color: #4b5563;
    max-width: 640px;
    margin: 0 auto;
}
.lede em { color: #0066b3; font-style: normal; font-weight: 600; }

.tools {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}
.tool-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 1.75rem;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.tool-card:hover:not(.disabled) {
    border-color: #0066b3;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -8px rgba(0, 102, 179, 0.15);
}
.tool-card.disabled { opacity: 0.55; cursor: not-allowed; }
.tool-card h2 {
    margin: 0;
    font-size: 1.3125rem;
    font-weight: 600;
    color: #0f172a;
}
.tool-card p {
    margin: 0;
    color: #4b5563;
    font-size: 0.9375rem;
    flex: 1;
}
.tool-status {
    display: inline-block;
    align-self: flex-start;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.25rem 0.625rem;
    border-radius: 4px;
}
.status-live { background: #d1fae5; color: #065f46; }
.status-planned { background: #f3f4f6; color: #6b7280; }

.stats {
    margin: 2rem 0 1rem;
    padding: 1.5rem;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    text-align: center;
}
.stats h3 {
    margin: 0 0 1rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #6b7280;
    font-weight: 600;
}
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-bottom: 0.75rem;
}
.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}
.stat-num {
    font-size: 2rem;
    font-weight: 700;
    color: #0066b3;
    letter-spacing: -0.02em;
    line-height: 1;
}
.stat-label {
    font-size: 0.8125rem;
    color: #6b7280;
}
.stat-meta {
    margin: 0;
    font-size: 0.8125rem;
    color: #9ca3af;
}
.stats-loading {
    color: #9ca3af;
    margin: 0;
    font-size: 0.875rem;
}

/* Bulletin page */
.bulletin-wrap {
    max-width: 820px;
    margin: 0 auto;
    padding: 2rem;
}
.bulletin-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
}
.bulletin-meta {
    margin-top: 0.75rem;
    color: #6b7280;
    font-size: 0.8125rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.bulletin-meta code {
    background: #f3f4f6;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    font-size: 0.75rem;
}
.bulletin-body { line-height: 1.65; color: #1f2937; }
.bulletin-body h1 {
    margin: 0 0 1.5rem;
    font-size: 2rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: #0f172a;
}
.bulletin-body h2 {
    margin: 2.5rem 0 0.75rem;
    font-size: 1.375rem;
    color: #0f172a;
    border-bottom: 1px solid #e5e7eb;
    padding-bottom: 0.5rem;
}
.bulletin-body h3 {
    margin: 1.75rem 0 0.5rem;
    font-size: 1.0625rem;
    color: #1f2937;
}
.bulletin-body p { margin: 0 0 1rem; }
.bulletin-body ul, .bulletin-body ol { margin: 0 0 1rem 0; padding-left: 1.5rem; }
.bulletin-body li { margin-bottom: 0.375rem; }
.bulletin-body a { color: #0066b3; text-decoration: none; border-bottom: 1px solid #b3d9f2; }
.bulletin-body a:hover { background: #eff6ff; }
.bulletin-body code {
    background: #f3f4f6;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    font-size: 0.875em;
}
.bulletin-body strong { font-weight: 600; }
.bulletin-body blockquote {
    border-left: 3px solid #d1d5db;
    margin: 1rem 0;
    padding: 0.25rem 1rem;
    color: #4b5563;
    font-style: italic;
}

/* Sources page extras */
.source-row { cursor: pointer; transition: background 0.1s; }
.source-row:hover { background: #f9fafb; }
.src-url {
    font-size: 0.75rem;
    color: #9ca3af;
    margin-top: 0.125rem;
    word-break: break-all;
}
.badge {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.2rem 0.55rem;
    border-radius: 4px;
}
.badge-on { background: #d1fae5; color: #065f46; }
.badge-off { background: #f3f4f6; color: #9ca3af; }
.hint {
    font-size: 0.8125rem;
    color: #9ca3af;
    margin: 0.5rem 0 0;
}

/* Top nav */
.topnav {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    display: flex;
    gap: 1.5rem;
}
.topnav a {
    color: #6b7280;
    text-decoration: none;
    font-size: 0.875rem;
}
.topnav a:hover { color: #0066b3; }

/* Costs page */
.cost-summary {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 1.75rem;
    margin: 1.5rem 0;
}
.cost-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1.5rem;
}
.cost-figure {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}
.cost-num {
    font-size: 2rem;
    font-weight: 700;
    color: #0066b3;
    letter-spacing: -0.02em;
    line-height: 1;
}
.cost-label {
    font-size: 0.8125rem;
    color: #6b7280;
    text-align: center;
}
.cost-block {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1rem;
}
.cost-block h2 {
    margin: 0 0 0.75rem;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #6b7280;
    font-weight: 600;
}
.cost-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}
.cost-table th, .cost-table td {
    text-align: left;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid #f3f4f6;
}
.cost-table th {
    font-weight: 600;
    color: #6b7280;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.04em;
}
.cost-table tr:last-child td { border-bottom: none; }
.cost-table .num { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; color: #0066b3; }
.cost-table td.empty { text-align: center; padding: 1.5rem; color: #9ca3af; }
.controls select { padding: 0.375rem 0.625rem; border: 1px solid #d1d5db; border-radius: 4px; font: inherit; }

footer {
    text-align: center;
    color: #9ca3af;
    font-size: 0.8125rem;
    margin-top: 2rem;
}

/* ===== Intel page ===== */
.intel { max-width: 1100px; margin: 0 auto; padding: 2rem; }
.intel header { margin-bottom: 1.5rem; }
.back {
    display: inline-block;
    color: #6b7280;
    text-decoration: none;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}
.back:hover { color: #0066b3; }
.intel h1 {
    margin: 0.25rem 0 0.25rem;
    font-size: 1.875rem;
    color: #0f172a;
}
.subtitle { margin: 0 0 1.5rem; color: #6b7280; }

.controls {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
    padding: 1rem 1.25rem;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
}
.controls label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: #374151;
}
.controls input[type="text"] {
    padding: 0.375rem 0.625rem;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    font: inherit;
}
.controls input[type="range"] { width: 140px; }
.controls button {
    padding: 0.5rem 1rem;
    border: 1px solid #d1d5db;
    background: white;
    border-radius: 4px;
    cursor: pointer;
    font: inherit;
    font-size: 0.875rem;
}
.controls button:hover:not(:disabled) { background: #f3f4f6; border-color: #9ca3af; }
.controls button:disabled { opacity: 0.5; cursor: not-allowed; }
#status { color: #6b7280; font-size: 0.8125rem; }

#feed { margin-top: 1.5rem; }

.item {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1rem;
}
.item-head {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}
.score {
    display: inline-block;
    min-width: 2.75rem;
    text-align: center;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-weight: 700;
    font-size: 0.875rem;
    flex-shrink: 0;
}
.score.high { background: #d1fae5; color: #065f46; }
.score.mid { background: #fef3c7; color: #92400e; }
.score.low { background: #f3f4f6; color: #6b7280; }
.item h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    flex: 1;
    line-height: 1.4;
}
.item h3 a { color: #0f172a; text-decoration: none; }
.item h3 a:hover { color: #0066b3; }

.meta {
    color: #6b7280;
    font-size: 0.8125rem;
    margin: 0.25rem 0 0.75rem;
}
.summary { margin: 0 0 0.75rem; color: #374151; }

details {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid #f3f4f6;
}
details summary {
    cursor: pointer;
    color: #6b7280;
    font-size: 0.875rem;
    user-select: none;
}
details summary:hover { color: #0066b3; }
.reasoning {
    color: #4b5563;
    font-size: 0.875rem;
    margin: 0.5rem 0;
}
.tags {
    font-size: 0.8125rem;
    color: #4b5563;
    margin: 0.375rem 0;
}
.tags strong { color: #374151; }
.empty {
    color: #6b7280;
    text-align: center;
    padding: 3rem 1rem;
    font-size: 0.9375rem;
}