@font-face { font-family: 'Bricolage Grotesque'; src: url('/fonts/bricolage.woff2') format('woff2'); font-weight: 200 800; font-display: swap; }
:root {
  --display: 'Bricolage Grotesque', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --amber: #ffb547;
  --paper: #f6f0e1;
  --bg: #070b12;
  --bg-elevated: #0a1018;
  --bg-card: #0d1520;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --accent: #00d4ff;
  --accent-hover: #00b8e6;
  --border: #1e293b;
  --danger: #f87171;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --header-bg: rgba(7, 11, 18, 0.8);
  --prose: #cbd5e1;
  --border-strong: #2b3a52;
  --dialog-bg: #0b111b;
  --hover: rgba(255,255,255,.03);
  --hover-strong: rgba(255,255,255,.06);
  --on-accent: #070b12;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif; background: var(--bg); background-image: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0,212,255,0.08), transparent); background-repeat: no-repeat; color: var(--text); line-height: 1.6; min-height: 100vh; }
a { color: var(--accent); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
.header { border-bottom: 1px solid var(--border); background: var(--header-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); font-weight: 600; font-size: 1.1rem; }
.logo-mark { width: 32px; height: 32px; flex-shrink: 0; }
.nav { display: flex; gap: 28px; }
.nav a { color: var(--text-muted); text-decoration: none; font-size: 0.95rem; transition: color 0.2s; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; border-radius: 10px; text-decoration: none; font-weight: 600; font-size: 0.95rem; transition: background 0.2s, transform 0.15s, box-shadow 0.15s, border-color 0.2s; border: none; cursor: pointer; font-family: inherit; }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 20px rgba(0,212,255,0.3); }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 8px 14px; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* Home */
h1, h2, .logo-text { font-family: var(--display); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.hero { padding: 72px 0 56px; background: repeating-linear-gradient(90deg, rgba(148,163,184,.16) 0 1px, transparent 1px 12px) bottom / 100% 10px no-repeat, repeating-linear-gradient(90deg, rgba(148,163,184,.3) 0 1px, transparent 1px 120px) bottom / 100% 22px no-repeat; }
.hero h1 { font-size: clamp(2.5rem, 7vw, 5rem); font-weight: 750; line-height: .98; letter-spacing: -0.035em; max-width: 13ch; margin-bottom: 22px; }
.hero-sub { font-size: 1.15rem; color: var(--text-muted); max-width: 58ch; margin-bottom: 28px; }
.search { margin-bottom: 28px; max-width: 640px; }
.tool-page .search { margin-bottom: 8px; }
.search input { width: 100%; padding: 16px 18px; font: inherit; font-size: 1.05rem; color: var(--text); background: var(--bg-card); border: 1px solid var(--border-strong); border-radius: 14px; }
.search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px rgba(0,212,255,.15); }
.search-box { position: relative; }
.suggest { position: absolute; z-index: 30; top: calc(100% + 6px); left: 0; right: 0; margin: 0; padding: 6px; list-style: none; max-height: min(60vh, 420px); overflow-y: auto; background: var(--bg-elevated); border: 1px solid var(--border-strong); border-radius: 14px; box-shadow: var(--shadow); }
.suggest [role=option] { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 10px; cursor: pointer; color: var(--text); }
.suggest [role=option]:hover, .suggest [aria-selected=true] { background: var(--bg-card); box-shadow: inset 0 0 0 1px var(--accent); }
.suggest .sg-icon { width: 1.6em; text-align: center; font-size: 1.1rem; }
.suggest mark { background: none; color: var(--accent); font-weight: 700; }
.suggest .sg-count { padding: 8px 12px 4px; font-size: .8rem; color: var(--text-muted); }
.search-empty { color: var(--text-muted); margin-top: 12px; }
.flagships { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 36px; }
.flagship { display: grid; grid-template-columns: 150px 1fr; gap: 22px; align-items: center; padding: 24px; border-radius: 18px; border: 1px solid var(--border); background: var(--bg-card); color: inherit; text-decoration: none; transition: border-color .2s; }
.flagship:hover { border-color: var(--accent); }
.flagship h2 { font-size: 1.45rem; letter-spacing: -0.02em; margin-bottom: 6px; }
.flagship p { color: var(--text-muted); font-size: .95rem; margin-bottom: 14px; }
.flagship .btn { padding: 9px 16px; font-size: .9rem; }
.mini-receipt { background: var(--paper); color: #1d2530; font-family: var(--mono); font-size: .78rem; padding: 16px 12px 20px; border-radius: 3px; transform: rotate(-3deg); box-shadow: 0 10px 30px rgba(0,0,0,.45); }
.mini-receipt span { display: flex; justify-content: space-between; padding: 2px 0; }
.mini-receipt b { font-weight: 500; }
.mini-receipt .hl { background: #ffe9a8; margin: 0 -4px; padding: 2px 4px; }
.mini-receipt .tot { border-top: 1px dashed #8b8676; margin-top: 6px; padding-top: 6px; font-weight: 700; }
.mini-receipt .tot b { font-weight: 700; }
.mini-gauge { aspect-ratio: 1; border-radius: 50%; border: 2px solid var(--border-strong); border-top-color: var(--accent); border-right-color: var(--accent); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.mini-gauge b { font-family: var(--display); font-size: 3rem; line-height: 1; color: var(--accent); }
.mini-gauge span { font-size: .72rem; color: var(--text-muted); }
.mini-gauge i { font-style: normal; font-size: .68rem; color: var(--text); margin-top: 6px; }
.cat { padding-top: 44px; }
.cat h2 { font-size: 1.5rem; letter-spacing: -0.02em; margin-bottom: 16px; }
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.tool-card { display: flex; gap: 14px; align-items: flex-start; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; text-decoration: none; color: inherit; transition: border-color .2s; }
.tool-card:hover { border-color: var(--accent); }
.tool-icon { width: 42px; height: 42px; flex-shrink: 0; background: rgba(0, 212, 255, 0.08); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; }
.tool-card-text { display: flex; flex-direction: column; min-width: 0; }
.tool-card-text strong { font-size: 1.02rem; font-weight: 600; }
.tool-card-text span { color: var(--text-muted); font-size: .88rem; line-height: 1.4; }
.features { padding: 56px 0 24px; margin-top: 56px; border-top: 1px solid var(--border); }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 32px; }
.feature h3 { font-family: var(--display); font-size: 1.15rem; margin-bottom: 6px; }
.feature p { color: var(--text-muted); font-size: .95rem; }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 40px 0; margin-top: 40px; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px 24px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; }
.footer-links a:hover { color: var(--text); }
.copyright { color: var(--text-muted); font-size: 0.85rem; }

/* Tool pages */
.tool-page { padding: 40px 0 40px; }
.breadcrumb { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 16px; }
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.tool-layout { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 32px; align-items: start; max-width: 860px; }
.tool-layout > div { min-width: 0; }
.tool-header { margin-bottom: 24px; }
.tool-header h1 { font-size: 2.3rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.2; margin-bottom: 6px; }
.tool-header p { color: var(--text-muted); font-size: 1.05rem; }
.calculator { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; position: relative; }
.calculator::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--accent), transparent); }
.calculator + .calculator { margin-top: 20px; }
.calculator h2 { font-size: 1.05rem; margin-bottom: 14px; }
.form-group { margin-bottom: 16px; }
.form-group > label, .label { display: block; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 6px; letter-spacing: 0.02em; }
.form-group input:not([type="checkbox"]):not([type="radio"]):not([type="range"]), .form-group select, .form-group textarea, .input { width: 100%; padding: 11px 13px; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 10px; color: var(--text); font-size: 1rem; font-family: inherit; transition: border-color 0.2s, box-shadow 0.2s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus, .input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,212,255,0.15); }
select { appearance: none; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394a3b8' stroke-width='1.5'/%3E%3C/svg%3E") !important; background-repeat: no-repeat !important; background-position: right 13px center !important; padding-right: 36px !important; }
select option, select optgroup { background: var(--bg-card); color: var(--text); }
.row { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 12px; }
.row > .form-group { margin-bottom: 16px; }
.input-suffix { position: relative; }
.input-suffix span { position: absolute; right: 13px; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 0.9rem; pointer-events: none; }
.input-suffix input { padding-right: 40px !important; }
.check { display: flex; align-items: center; gap: 10px; font-size: 0.92rem; color: var(--text); cursor: pointer; margin-bottom: 10px; }
.check input { width: 18px; height: 18px; accent-color: var(--accent); flex-shrink: 0; }
.check.disabled { opacity: 0.45; cursor: not-allowed; }
.checks { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 0 16px; margin-bottom: 8px; }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.range-row { display: flex; align-items: center; gap: 14px; }
.range-row input[type="number"] { width: 80px !important; flex-shrink: 0; text-align: center; }

/* Segmented control / tabs */
.tabs { display: flex; gap: 4px; padding: 4px; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 20px; overflow-x: auto; }
.tabs button { flex: 1; min-width: max-content; padding: 9px 14px; border: none; border-radius: 9px; background: transparent; color: var(--text-muted); font: inherit; font-size: 0.9rem; font-weight: 600; cursor: pointer; transition: background 0.2s, color 0.2s; }
.tabs button:hover { color: var(--text); }
.tabs button[aria-selected="true"] { background: var(--accent); color: var(--on-accent); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.chips button { padding: 6px 12px; border-radius: 999px; border: 1px solid var(--border); background: transparent; color: var(--text-muted); font: inherit; font-size: 0.85rem; cursor: pointer; }
.chips button:hover, .chips button.active { border-color: var(--accent); color: var(--accent); }

/* Results */
.result { margin-top: 20px; padding: 18px; background: rgba(0,212,255,0.06); border: 1px solid rgba(0,212,255,0.2); border-radius: 12px; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.result-label { font-size: 0.8rem; color: var(--text-muted); }
.result-value { font-family: var(--display); font-size: 2.1rem; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; line-height: 1.25; word-break: break-word; }
.result-sub { color: var(--text-muted); font-size: 0.9rem; margin-top: 4px; }
.result-row { display: flex; justify-content: space-between; gap: 12px; padding: 7px 0; font-size: 0.95rem; }
.result-row span:last-child { font-variant-numeric: tabular-nums; font-weight: 600; text-align: right; }
.result-row.total { border-top: 1px solid rgba(0,212,255,0.2); margin-top: 6px; padding-top: 11px; }
.result-row.total span:last-child { color: var(--accent); }
.result-rows { margin-top: 12px; }
.error { margin-top: 16px; padding: 12px 14px; border-radius: 10px; background: rgba(248,113,113,0.08); border: 1px solid rgba(248,113,113,0.3); color: var(--danger); font-size: 0.9rem; }
.note { font-size: 0.82rem; color: var(--text-muted); margin-top: 12px; }
.table-wrap { overflow-x: auto; margin-top: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; font-variant-numeric: tabular-nums; }
th, td { padding: 8px 10px; text-align: right; border-bottom: 1px solid var(--border); white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
th { color: var(--text-muted); font-weight: 600; }
details.more { margin-top: 16px; }
details.more summary { cursor: pointer; color: var(--accent); font-size: 0.92rem; font-weight: 600; }

/* Side panel */
.side-panel { position: sticky; top: 96px; }
.side-note { font-size: 0.85rem; color: var(--text-muted); margin-top: 14px; }
.side-panel h2 { font-size: 1rem; margin: 22px 0 10px; }
.side-panel .related { grid-template-columns: 1fr; gap: 8px; margin-top: 0; }
.side-panel .related a { padding: 9px 12px; font-size: .88rem; }
textarea.input { font-family: inherit; }

/* Explainer content */
.info { max-width: 860px; margin-top: 48px; }
.info section { padding: 28px 0; border-top: 1px solid var(--border); }
.info h2 { font-size: 1.4rem; margin-bottom: 12px; letter-spacing: -0.01em; }
.info h3 { font-size: 1.05rem; margin: 18px 0 6px; }
.info p, .info li { color: var(--prose); font-size: 0.98rem; }
.info p + p { margin-top: 10px; }
.info ul, .info ol { padding-left: 22px; margin-top: 8px; }
.info li + li { margin-top: 4px; }
.formula { font-family: var(--mono); font-size: 0.9rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin: 12px 0; overflow-x: auto; color: var(--text); white-space: pre-wrap; }
.faq details { border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; background: var(--bg-card); }
.faq details + details { margin-top: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin-top: 8px; }
.related { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-top: 12px; }
.related a { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg-card); color: var(--text); text-decoration: none; font-size: 0.92rem; }
.related a:hover { border-color: var(--accent); }

/* Prose pages */
.prose { max-width: 760px; }
.prose h1 { font-size: 2.2rem; letter-spacing: -0.02em; margin-bottom: 8px; }
.prose h2 { font-size: 1.3rem; margin: 32px 0 10px; }
.prose p, .prose li { color: var(--prose); }
.prose p + p { margin-top: 12px; }
.prose ul { padding-left: 22px; margin-top: 8px; }
.prose .updated { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 24px; }

@media (max-width: 860px) {
  .flagships { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .hero { padding: 44px 0 44px; }
  .flagship { grid-template-columns: 110px 1fr; gap: 16px; padding: 18px; }
  .mini-gauge b { font-size: 2.2rem; }
  .header-inner { height: 60px; }
  .logo-text { font-size: 1rem; }
  .nav { gap: 18px; }
  .nav a { font-size: 0.9rem; }
  .tool-layout { grid-template-columns: minmax(0, 1fr); }
  .side-panel { position: static; }
  .tool-header h1 { font-size: 1.7rem; }
  .calculator { padding: 18px; }
  .container { padding: 0 16px; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }
@media (max-width: 400px) { .logo-text { display: none; } }
@media (max-width: 520px) { .tabs { gap: 2px; } .tabs button { min-width: 0; padding: 9px 2px; font-size: 0.78rem; letter-spacing: -0.01em; } }

/* ---------- page toolkit ---------- */
.tool-header .byline { display: flex; flex-wrap: wrap; gap: 4px 18px; margin-top: 10px; font-size: .82rem; color: var(--text-muted); }
.byline a { color: var(--text-muted); text-decoration: underline; text-underline-offset: 3px; }
.byline a:hover { color: var(--accent); }
.toolkit { border: 1px solid var(--border); border-radius: 14px; padding: 10px; margin-bottom: 10px; background: var(--bg-elevated); }
.tk-like { width: 100%; display: flex; align-items: center; justify-content: center; gap: 8px; padding: 11px; border-radius: 10px; border: 1px solid var(--border); background: transparent; color: var(--text); font: inherit; font-weight: 700; cursor: pointer; transition: border-color .2s, background .2s; }
.tk-like:hover { border-color: var(--accent); }
.tk-like.on { background: rgba(0,212,255,.14); border-color: var(--accent); color: var(--accent); }
.tk-like b { font-weight: 600; color: var(--text-muted); }
.tk-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; margin-top: 8px; }
.tk-grid button { display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 9px 4px; border-radius: 10px; border: 1px solid transparent; background: transparent; color: var(--text); font: inherit; font-size: .8rem; font-weight: 600; cursor: pointer; }
.tk-grid button span { font-size: 1.05rem; line-height: 1; }
.tk-grid button:hover, .tk-grid button:focus-visible { border-color: var(--border); background: var(--hover); color: var(--accent); }
.tk-report { width: 100%; margin-top: 6px; padding: 6px; background: none; border: 0; color: var(--text-muted); font: inherit; font-size: .78rem; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.tk-report:hover { color: var(--accent); }
#tkDialog { margin: auto; width: min(560px, calc(100vw - 24px)); max-height: calc(100vh - 40px); border: 1px solid var(--border); border-radius: 16px; background: var(--dialog-bg); color: var(--text); padding: 20px; box-shadow: 0 30px 80px rgba(0,0,0,.6); }
#tkDialog::backdrop { background: rgba(3,6,10,.7); backdrop-filter: blur(3px); }
.tk-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 8px; }
.tk-head h2 { font-family: var(--display); font-size: 1.25rem; margin: 0; }
.tk-x { background: none; border: 0; color: var(--text-muted); font-size: 1.1rem; cursor: pointer; padding: 6px 8px; border-radius: 8px; }
.tk-x:hover { color: var(--text); background: var(--hover-strong); }
.tk-copy { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; margin: 10px 0; }
.tk-code { width: 100%; font-family: var(--mono); font-size: .82rem; line-height: 1.45; resize: vertical; }
.tk-nets { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
#tkDialog .tabs { margin: 10px 0 0; }
.helpful { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; padding: 18px 20px; border: 1px solid var(--border); border-radius: 14px; margin: 28px 0; }
.helpful p { margin: 0 6px 0 0; font-weight: 700; }
.helpful .note { margin: 0; }
.helpful .on { border-color: var(--accent); color: var(--accent); }
.sources { padding-left: 20px; }
.sources li { margin: 6px 0; overflow-wrap: anywhere; }
.embed-credit, .print-only { display: none; }

/* Embedded on another site: just the calculator and a credit line. */
.embed body { background: var(--bg); }
.embed .header, .embed .breadcrumb, .embed .side-panel, .embed .info, .embed .footer, .embed .byline { display: none !important; }
.embed .tool-page { padding: 12px 0 0; }
.embed .tool-layout { grid-template-columns: 1fr; max-width: 760px; margin: 0 auto; }
.embed .tool-header h1 { font-size: 1.5rem; }
.embed .embed-credit { display: block; max-width: 760px; margin: 4px auto 0; padding: 10px 0 14px; text-align: center; font-size: .82rem; }
.embed .embed-credit a { color: var(--text-muted); text-decoration: none; }
.embed .embed-credit a:hover { color: var(--accent); }

@media print {
  body { background: #fff !important; color: #000 !important; }
  .header, .footer, .breadcrumb, .side-panel, .faq, .helpful, .related, .byline, .embed-credit, #tkDialog, .btn, .tabs, .info section:last-of-type { display: none !important; }
  .tool-layout { grid-template-columns: 1fr !important; }
  .calculator, .result, .info section { background: #fff !important; border-color: #bbb !important; box-shadow: none !important; color: #000 !important; break-inside: avoid; }
  .calculator::before { display: none !important; }
  .result-value, .result-label, h1, h2, h3 { color: #000 !important; -webkit-text-fill-color: #000 !important; }
  input, select, textarea { border: 1px solid #999 !important; color: #000 !important; background: #fff !important; }
  .print-only { display: block; margin-top: 16px; font-size: 11px; color: #444; }
  a { color: #000; }
}

/* ---------- category hubs ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin: 18px auto 0; max-width: 860px; }
.chips a { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 999px; border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text); text-decoration: none; font-size: .88rem; font-weight: 600; transition: border-color .2s, color .2s; }
.chips a:hover, .chips a:focus-visible { border-color: var(--accent); color: var(--accent); }
.chips small { color: var(--text-muted); font-weight: 500; }
.cat h2 a { color: inherit; text-decoration: none; }
.cat h2 a:hover { color: var(--accent); }
.see-all { display: inline-block; margin-top: 12px; font-size: .9rem; font-weight: 600; color: var(--accent); text-decoration: none; }
.see-all:hover { text-decoration: underline; text-underline-offset: 3px; }
.see-all::after { content: ' ›'; }
.see-all-wrap { margin: 4px 0 0; }
.related-tools h2 + .related { margin-bottom: 22px; }
.hub-head h1 span { margin-right: 4px; }
.hub-head p { max-width: 72ch; }
.hub-count { margin-top: 8px; font-size: .85rem; color: var(--text-muted); }
.hub-tops h2, .hub-group h2 { font-family: var(--display); font-size: 1.3rem; margin: 0 0 4px; }
.hub-tops { margin: 8px 0 26px; }
.hub-top-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-top: 12px; }
.hub-top { display: flex; flex-direction: column; gap: 6px; padding: 18px; border-radius: 16px; border: 1px solid var(--border); background: linear-gradient(160deg, rgba(0,212,255,.08), transparent 60%), var(--bg-elevated); color: var(--text); text-decoration: none; transition: border-color .2s, transform .15s; }
.hub-top:hover { border-color: var(--accent); transform: translateY(-2px); }
.hub-top strong { font-family: var(--display); font-size: 1.05rem; }
.hub-top span:last-child { font-size: .85rem; color: var(--text-muted); }
.hub-toc { justify-content: flex-start; margin: 0 0 8px; }
.hub-desc { color: var(--text-muted); font-size: .92rem; margin: 0 0 12px; }
.hub-info { margin-top: 30px; }
@media print { .chips, .see-all { display: none !important; } }

/* Charts (areaChart in main.js) */
.chart { margin-top: 18px; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 0.82rem; color: var(--text-muted); margin-bottom: 6px; }
.chart-legend i, .chart-tip i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.chart-box { position: relative; }
.chart svg { width: 100%; height: auto; display: block; touch-action: pan-y; }
.chart svg text { fill: var(--text-muted); font-size: 11px; font-family: inherit; }
.chart svg .grid { stroke: var(--border); stroke-width: 1; }
.chart svg .hover { stroke: var(--text-muted); stroke-dasharray: 3 3; }
.chart-tip { position: absolute; top: 0; pointer-events: none; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; font-size: 0.8rem; display: grid; gap: 2px; white-space: nowrap; box-shadow: var(--shadow); }
.chart-tip .t { border-top: 1px solid var(--border); margin-top: 2px; padding-top: 2px; font-weight: 600; }
.table-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.schedule-table { max-height: 420px; overflow: auto; }
.schedule-table thead th { position: sticky; top: 0; background: var(--bg-card); }
.macro-bars { display: grid; gap: 10px; margin-top: 16px; }
.macro-bar { display: grid; grid-template-columns: 90px 1fr auto; gap: 10px; align-items: center; font-size: 0.9rem; }
.macro-bar .track { height: 10px; background: var(--bg-elevated); border-radius: 99px; overflow: hidden; }
.macro-bar .fill { height: 100%; border-radius: 99px; }
.sci-keys { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin-top: 14px; }
.sci-keys button { padding: 12px 0; border-radius: 10px; border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text); font: inherit; font-size: 1rem; cursor: pointer; transition: border-color .15s, background .15s; }
.sci-keys button:hover { border-color: var(--accent); }
.sci-keys button.op { color: var(--accent); }
.sci-keys button[data-k="="] { background: var(--accent); color: var(--on-accent); font-weight: 700; }
.sci-hist { display: grid; gap: 4px; margin-top: 8px; }
.sci-h { text-align: left; background: none; border: none; border-bottom: 1px solid var(--border); color: var(--text-muted); font-family: var(--mono); font-size: .88rem; padding: 6px 2px; cursor: pointer; }
.sci-h:hover { color: var(--text); }
.ratio-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: -4px 0 16px; }
.form-group textarea { resize: vertical; min-height: 120px; line-height: 1.5; }

/* Light theme: set by the toggle in the header (js in <head> applies it before first paint) */
:root[data-theme="light"] {
  --bg: #f5f7fa; --bg-elevated: #eef2f6; --bg-card: #ffffff;
  --text: #0f172a; --text-muted: #556274; --prose: #334155;
  --accent: #0e7490; --accent-hover: #155e75; --on-accent: #ffffff;
  --border: #d9e0e8; --border-strong: #c3ccd7; --danger: #dc2626;
  --header-bg: rgba(255, 255, 255, 0.85); --dialog-bg: #ffffff;
  --hover: rgba(15,23,42,.04); --hover-strong: rgba(15,23,42,.07);
  --shadow: 0 4px 18px rgba(15, 23, 42, 0.08);
  color-scheme: light;
}
:root[data-theme="light"] body { background-image: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(14,116,144,0.08), transparent); }
:root[data-theme="light"] #tkDialog::backdrop { background: rgba(15,23,42,.35); }
:root[data-theme="light"] .logo-mark path, :root[data-theme="light"] .logo-mark line:not([stroke="#00d4ff"]) { stroke: #0f172a; }
.install-btn { height: 38px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--accent); background: transparent; color: var(--accent); font: 600 .85rem/1 inherit; font-family: inherit; cursor: pointer; margin-right: 8px; }
.install-btn:hover { background: rgba(0,212,255,.1); }
.theme-toggle { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg-card); color: var(--text); cursor: pointer; font-size: 1.05rem; transition: border-color .2s; }
.theme-toggle:hover { border-color: var(--accent); }
.header-right { display: flex; align-items: center; gap: 20px; }
.answer-page .result.answer { margin: 8px 0 28px; max-width: 760px; }
.answer-page .info { max-width: 900px; }
.lead { font-size: 1.05rem; color: var(--prose); margin-bottom: 18px; }
.pay-grid a small { color: var(--text-muted); margin-left: 6px; font-weight: 400; }
.pool-table input.input { padding: 8px 10px; min-width: 64px; }
.pool-table td:first-child input.input { min-width: 110px; }
.pool-table td { white-space: nowrap; }
/* studies */
.study-meta { color: var(--text-muted); font-size: .9rem; margin: -6px 0 14px; }
.study-findings { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 14px; padding: 18px 22px; margin: 6px 0 26px; max-width: 900px; }
.study-findings h2 { margin-top: 0; }
.study-findings li { margin: 8px 0; color: var(--prose); }
.study-tool { max-width: 900px; }
.study-controls { max-width: 520px; }
.tile-map { display: grid; grid-template-columns: repeat(12, 1fr); gap: 4px; margin: 10px 0 8px; }
.tile-map .tile { aspect-ratio: 1; border-radius: 6px; background: rgba(0, 212, 255, var(--k, .3)); display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--text); font-size: clamp(.5rem, 1.6vw, .8rem); line-height: 1.15; cursor: default; }
.tile-map .tile.dark { color: #04121a; }
.tile-map .tile b { font-weight: 750; }
.tile-map .tile span { font-size: .85em; opacity: .9; }
.map-legend { display: flex; align-items: center; gap: 10px; font-size: .8rem; color: var(--text-muted); margin-bottom: 18px; }
.map-legend i { flex: 0 1 180px; height: 10px; border-radius: 6px; background: linear-gradient(90deg, rgba(0,212,255,.12), rgba(0,212,255,1)); }
/* ad slots: space is reserved so content doesn't jump when an ad loads */
.ad-slot { margin: 22px auto; max-width: 900px; min-height: 280px; text-align: center; }
.ad-slot .ad-label { display: block; font-size: .7rem; letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 4px; }
.ad-side { min-height: 600px; margin: 18px 0 0; }
@media (max-width: 900px) { .ad-side { display: none; } .ad-slot { min-height: 250px; } }
.embed .ad-slot, .ad-slot:empty { display: none !important; }
@media print { .ad-slot { display: none !important; } }

/* ---------- Media tools (image and video) ---------- */
.drop { position: relative; display: block; border: 2px dashed var(--border-strong); border-radius: 14px; padding: 28px 18px; text-align: center; cursor: pointer; background: var(--bg-elevated); transition: border-color .2s, background .2s; }
.drop:hover, .drop.over { border-color: var(--accent); background: rgba(0,212,255,.05); }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
.drop strong { color: var(--accent); }
.drop .note { margin-top: 6px; }
.progress { position: relative; height: 26px; border-radius: 8px; background: var(--bg-elevated); border: 1px solid var(--border); overflow: hidden; margin-top: 14px; }
.progress i { position: absolute; inset: 0 auto 0 0; width: 0; background: linear-gradient(90deg, rgba(0,212,255,.35), rgba(0,212,255,.6)); transition: width .2s; }
.progress span { position: relative; display: block; text-align: center; font-size: .8rem; line-height: 24px; font-variant-numeric: tabular-nums; }
.checker { background-color: #1b2533; background-image: linear-gradient(45deg, #243042 25%, transparent 25%, transparent 75%, #243042 75%), linear-gradient(45deg, #243042 25%, transparent 25%, transparent 75%, #243042 75%); background-size: 16px 16px; background-position: 0 0, 8px 8px; }
:root[data-theme="light"] .checker { background-color: #eef2f7; background-image: linear-gradient(45deg, #dde4ee 25%, transparent 25%, transparent 75%, #dde4ee 75%), linear-gradient(45deg, #dde4ee 25%, transparent 25%, transparent 75%, #dde4ee 75%); }
.outs { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; margin-top: 14px; }
.out { border: 1px solid var(--border); border-radius: 12px; padding: 10px; background: var(--bg-elevated); display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.out .stage { display: flex; align-items: center; justify-content: center; border-radius: 8px; overflow: hidden; aspect-ratio: 4 / 3; position: relative; }
.out .stage img, .out .stage canvas, .out .stage video { max-width: 100%; max-height: 100%; display: block; }
.out .t { font-weight: 600; font-size: .9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.out .m { font-size: .78rem; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.out .m.bad { color: var(--danger); } .out .m.good { color: var(--success, #22c55e); }
.out .btn { margin-top: auto; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 6px 14px; }
.checks fieldset { border: 1px solid var(--border); border-radius: 12px; padding: 10px 12px; margin: 0; }
.checks legend { font-weight: 700; font-size: .9rem; padding: 0 4px; }
.checks label { display: flex; gap: 8px; align-items: baseline; font-size: .86rem; padding: 3px 0; cursor: pointer; }
.checks label small { color: var(--text-muted); font-variant-numeric: tabular-nums; margin-left: auto; white-space: nowrap; }
.media-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; align-items: center; }
.media-src { display: flex; gap: 14px; align-items: center; margin-top: 14px; flex-wrap: wrap; }
.media-src .thumb { width: 132px; height: 96px; border-radius: 10px; overflow: hidden; display: flex; align-items: center; justify-content: center; flex: none; }
.media-src .thumb img, .media-src .thumb video { max-width: 100%; max-height: 100%; }
.privacy-pill { display: inline-flex; gap: 6px; align-items: center; font-size: .78rem; color: var(--text-muted); border: 1px solid var(--border); border-radius: 999px; padding: 4px 10px; margin-bottom: 12px; }