/* ============================================================================
   Circuit Card Academy — aerospace repair training & bench toolkit
   Design language: precision-instrument. Charcoal rail, white work surface,
   aerospace red as the single signal colour, monospace for measured values.
   Light/dark aware. Full print support for the toolkit documents.
   ========================================================================== */
:root{
  --bg:#eef0f3; --surface:#ffffff; --surface-2:#f6f7f9; --surface-3:#eef1f4;
  --ink:#141821; --ink-soft:#4b5563; --ink-faint:#7c8794;
  --line:#e2e6ea; --line-strong:#cfd5db;

  --red:#d81e2c; --red-bright:#ef2533; --red-ink:#a4151f; --red-wash:#fdecec; --red-line:#f3b9bd;
  --ok:#1c7d4d; --ok-wash:#e6f4ec;
  --warn:#9a6400; --warn-wash:#fbf0d8;
  --info:#155e9c; --info-wash:#e6f0fa;

  --rail-bg:#15181d; --rail-bg-2:#1c2027; --rail-ink:#e8ebef; --rail-soft:#9aa3ad;
  --rail-faint:#6b747e; --rail-line:#2b313a; --rail-active-wash:#2a1416;

  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,"Roboto Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --sidebar-w:286px; --maxw:780px; --radius:10px; --radius-lg:14px;
  --shadow:0 1px 2px rgba(16,24,33,.05),0 10px 28px rgba(16,24,33,.06);
  --shadow-sm:0 1px 2px rgba(16,24,33,.06);
  font-synthesis:none;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0b0e12; --surface:#12161c; --surface-2:#0f141a; --surface-3:#171d25;
    --ink:#e9edf2; --ink-soft:#aab4bf; --ink-faint:#79838f;
    --line:#222a33; --line-strong:#2c343d;
    --red:#ef3340; --red-bright:#ff4350; --red-ink:#ff8b92; --red-wash:#2a1115; --red-line:#5a2227;
    --ok:#3cc585; --ok-wash:#0f2a1e; --warn:#e0a83a; --warn-wash:#2c2310; --info:#5aa9e6; --info-wash:#0e2536;
    --shadow:0 1px 2px rgba(0,0,0,.5),0 12px 32px rgba(0,0,0,.4);
    --shadow-sm:0 1px 2px rgba(0,0,0,.5);
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--red-ink)}
h1,h2,h3,h4{letter-spacing:-.01em}
.skip{position:absolute;left:-9999px;top:0;background:var(--red);color:#fff;padding:10px 14px;border-radius:8px;z-index:300}
.skip:focus{left:12px;top:12px}
.mono{font-family:var(--mono)}
.no-print{}

/* ---------- top bar (mobile) ---------- */
.topbar{position:sticky;top:0;z-index:60;display:flex;align-items:center;gap:12px;height:56px;padding:0 12px;
  background:var(--rail-bg);color:#fff;box-shadow:0 1px 10px rgba(0,0,0,.22);padding-top:env(safe-area-inset-top)}
.topbar-title{color:#fff;font-weight:700;text-decoration:none;letter-spacing:.2px;font-size:15px;display:flex;align-items:center;gap:8px}
.topbar-title::before{content:"▣";color:var(--red-bright)}
.topbar-spacer{flex:1}
.hamburger{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:42px;height:42px;border:0;background:transparent;cursor:pointer;border-radius:8px}
.hamburger span{display:block;height:2px;width:22px;background:#fff;border-radius:2px;transition:.2s}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- sidebar (charcoal instrument rail) ---------- */
.sidebar{position:fixed;top:0;left:0;z-index:120;width:var(--sidebar-w);height:100dvh;background:var(--rail-bg);
  color:var(--rail-ink);border-right:1px solid #000;padding:16px 12px 40px;overflow-y:auto;transform:translateX(-100%);transition:transform .24s ease}
.sidebar.open{transform:none}
.scrim{position:fixed;inset:0;z-index:110;background:rgba(0,0,0,.55);opacity:0;visibility:hidden;transition:.24s}
.scrim.show{opacity:1;visibility:visible}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:#fff;padding:6px 8px 8px}
.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:9px;background:var(--red);color:#fff;font-size:19px;box-shadow:0 0 0 1px rgba(255,255,255,.08) inset}
.brand-txt{display:flex;flex-direction:column;line-height:1.12}
.brand-txt strong{font-size:16px;letter-spacing:.2px}
.brand-txt small{color:var(--rail-soft);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase}
.rail-search{margin:8px 6px 4px}
.rail-search input{width:100%;height:38px;border-radius:9px;border:1px solid var(--rail-line);background:var(--rail-bg-2);color:#fff;
  padding:0 12px;font-size:14px;outline:none}
.rail-search input::placeholder{color:var(--rail-faint)}
.rail-search input:focus{border-color:var(--red);box-shadow:0 0 0 3px rgba(216,30,44,.25)}
.progress-mini{margin:10px 8px 4px;font-size:12px;color:var(--rail-soft)}
.progress-mini .bar,.hero-progress .bar{height:6px;border-radius:99px;background:var(--rail-line);overflow:hidden;margin-bottom:6px}
.progress-mini .bar span,.hero-progress .bar span{display:block;height:100%;width:0;background:var(--red);transition:width .3s}
.nav-group{margin:18px 8px 5px;font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--rail-faint);font-weight:700}
.sidebar ul{list-style:none;margin:0;padding:0}
.sidebar li a{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:8px;text-decoration:none;color:var(--rail-soft);font-size:14px;font-weight:500}
.sidebar li a:hover{background:var(--rail-bg-2);color:#fff}
.sidebar li.active a{background:var(--rail-active-wash);color:#fff;box-shadow:inset 3px 0 0 var(--red)}
.sidebar li a .n{font-family:var(--mono);font-size:11px;color:var(--rail-faint);min-width:18px}
.sidebar li.active a .n{color:var(--red-bright)}
.sidebar li a .t{flex:1}
.sidebar li a .ico{width:16px;text-align:center;opacity:.85}
.sidebar li a .done{opacity:0;color:var(--ok);font-weight:800;font-size:12px;transition:.15s}
.sidebar li a.is-done .done{opacity:1}
.rail-foot{margin:22px 10px 0;padding-top:14px;border-top:1px solid var(--rail-line);color:var(--rail-faint);font-size:11.5px;line-height:1.5}

/* ---------- content ---------- */
.content{padding:26px 18px 70px;max-width:var(--maxw);margin:0 auto}
.prose{font-size:17px}
.prose h1{font-size:1.72rem;line-height:1.18;margin:.1em 0 .5em}
.prose h2{font-size:1.3rem;margin:2em 0 .5em;padding-top:.5em;border-top:1px solid var(--line);}
.prose h3{font-size:1.09rem;margin:1.6em 0 .35em}
.prose p{margin:.7em 0}
.prose ul,.prose ol{margin:.6em 0;padding-left:1.3em}
.prose li{margin:.3em 0}
.prose li::marker{color:var(--red)}
.prose a{color:var(--red-ink);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px}
.prose strong{color:var(--ink);font-weight:700}
.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.prose blockquote{margin:1.1em 0;padding:.7em 1em;border-left:4px solid var(--red);background:var(--red-wash);border-radius:0 8px 8px 0;color:var(--ink)}
.prose blockquote p{margin:.2em 0}
.prose code{background:var(--surface-3);border:1px solid var(--line);border-radius:6px;padding:.08em .4em;font-size:.86em;font-family:var(--mono)}
.prose pre{background:#0d1117;color:#d7e1ea;padding:14px 16px;border-radius:var(--radius);overflow-x:auto;font-size:14px;line-height:1.55;box-shadow:var(--shadow-sm)}
.prose pre code{background:none;border:0;padding:0;color:inherit;font-size:inherit}

/* tables (shared) */
.table-wrap{overflow-x:auto;margin:1.1em 0;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:14.5px;background:var(--surface)}
th,td{text-align:left;padding:10px 13px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--rail-bg);color:#fff;font-weight:600;white-space:nowrap;position:sticky;top:0}
tbody tr:nth-child(even){background:var(--surface-2)}
tbody tr:last-child td{border-bottom:0}
td .mono,td.mono{font-family:var(--mono);font-size:13.5px}

/* module head */
.module-head{margin-bottom:.5em}
.module-head .kicker{margin:0;color:var(--red-ink);font-weight:800;font-size:12px;letter-spacing:.12em;text-transform:uppercase}
.module-head h1{margin:.12em 0 0}

/* reveal answers */
.qa{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap}
button.reveal{border:1px solid var(--red);background:var(--red-wash);color:var(--red-ink);font:600 13px/1 inherit;padding:5px 11px;border-radius:99px;cursor:pointer;transition:.15s}
button.reveal:hover{background:var(--red);color:#fff}
.answer{display:inline-block;background:var(--warn-wash);border:1px solid var(--warn);color:var(--warn);padding:4px 10px;border-radius:8px;font-weight:600}

/* complete toggle + pager */
.complete-row{margin:2.4em 0 0;padding-top:1.4em;border-top:1px solid var(--line)}
.complete-toggle{display:inline-flex;align-items:center;gap:10px;cursor:pointer;background:var(--surface);border:1px solid var(--line);border-radius:99px;padding:9px 16px;font-weight:600;box-shadow:var(--shadow-sm)}
.complete-toggle input{width:18px;height:18px;accent-color:var(--red)}
.complete-toggle.done{background:var(--ok-wash);border-color:var(--ok);color:var(--ok)}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:2.4em 0 1em}
.pg{display:flex;flex-direction:column;gap:3px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;background:var(--surface);box-shadow:var(--shadow-sm);color:var(--ink)}
.pg span{font-size:12.5px;color:var(--ink-faint);font-weight:600}
.pg strong{font-size:15px}
.pg.next{text-align:right;align-items:flex-end}
.pg:hover{border-color:var(--red)}
.site-foot{margin-top:2em;padding-top:1.2em;border-top:1px solid var(--line);color:var(--ink-faint);font-size:13px}

/* ---------- buttons / badges / cards (shared) ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 19px;border-radius:10px;font-weight:700;text-decoration:none;font-size:15px;border:1px solid transparent;cursor:pointer}
.btn.primary{background:var(--red);color:#fff}
.btn.primary:hover{background:var(--red-bright)}
.btn.ghost{border-color:var(--line-strong);color:var(--ink);background:var(--surface)}
.btn.ghost:hover{border-color:var(--red);color:var(--red-ink)}
.btn.dark{background:#fff;color:#15181d}
.badge{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.04em;padding:3px 9px;border-radius:99px;text-transform:uppercase}
.badge.red{background:var(--red-wash);color:var(--red-ink);border:1px solid var(--red-line)}
.badge.ok{background:var(--ok-wash);color:var(--ok)}
.badge.info{background:var(--info-wash);color:var(--info)}
.badge.gray{background:var(--surface-3);color:var(--ink-soft)}
.section-intro{color:var(--ink-soft);font-size:15.5px;max-width:62ch;margin:.2em 0 1.4em}
.page-head{margin:.2em 0 1.2em}
.page-head .kicker{margin:0;color:var(--red-ink);font-weight:800;font-size:12px;letter-spacing:.12em;text-transform:uppercase}
.page-head h1{margin:.12em 0 .25em;font-size:1.72rem}

.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin:1.2em 0}
.tile{display:flex;flex-direction:column;gap:6px;padding:18px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-sm);text-decoration:none;color:var(--ink);transition:.15s}
.tile:hover{border-color:var(--red);transform:translateY(-1px);box-shadow:var(--shadow)}
.tile .ti{font-size:22px;line-height:1}
.tile h3{margin:.1em 0 0;font-size:1.02rem}
.tile p{margin:0;color:var(--ink-soft);font-size:13.5px;line-height:1.5}
.tile .meta{margin-top:auto;font-size:12px;color:var(--red-ink);font-weight:700}

/* ---------- hero (home) ---------- */
.content.is-home{max-width:960px}
.hero{margin:6px 0 26px;padding:40px 30px 34px;border-radius:18px;color:#f2f4f6;position:relative;overflow:hidden;
  background:linear-gradient(180deg,#1c2027,#15181d);box-shadow:var(--shadow)}
.hero::before{content:"";position:absolute;inset:0 0 auto 0;height:5px;background:linear-gradient(90deg,var(--red),var(--red-bright))}
.hero::after{content:"";position:absolute;right:-80px;top:-60px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(216,30,44,.22),transparent 70%)}
.hero .eyebrow{margin:6px 0 10px;color:#fff;font-weight:800;font-size:12px;letter-spacing:.14em;text-transform:uppercase;display:inline-flex;align-items:center;gap:8px}
.hero .eyebrow::before{content:"";width:22px;height:2px;background:var(--red-bright)}
.hero h1{margin:0;font-size:2.2rem;line-height:1.1}
.hero h1 span{color:#ff5b66}
.hero .lede{margin:.8em 0 1.4em;color:#c3cad2;max-width:52ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-cta .btn.ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#e8ebef}
.hero-cta .btn.ghost:hover{border-color:#ff5b66;color:#fff}
.hero-progress{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:20px;color:#c3cad2;font-size:13.5px}
.hero-progress .bar{flex:1;min-width:160px;background:rgba(255,255,255,.14)}
.link-btn{background:none;border:0;color:#ff8b92;cursor:pointer;font:600 13px/1 inherit;text-decoration:underline;padding:0}
.home-section-title{font-size:1.15rem;margin:2em 0 .2em;display:flex;align-items:center;gap:10px}
.home-section-title::before{content:"";width:14px;height:14px;border-radius:3px;background:var(--red)}

/* ---------- Bench Mode reference ---------- */
.ref-section{margin:1.6em 0;scroll-margin-top:70px}
.ref-section h2{font-size:1.18rem;margin:0 0 .3em;display:flex;align-items:center;gap:9px}
.ref-section h2 .tag{font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);font-weight:700;border:1px solid var(--line);border-radius:99px;padding:2px 8px}
.ref-section .intro{color:var(--ink-soft);font-size:14px;margin:.1em 0 .7em}
.steps-list{counter-reset:s;list-style:none;padding:0;margin:.4em 0}
.steps-list li{counter-increment:s;display:flex;gap:12px;padding:9px 0;border-bottom:1px solid var(--line)}
.steps-list li::before{content:counter(s);flex:none;width:24px;height:24px;border-radius:50%;background:var(--red);color:#fff;font:700 13px/24px var(--mono);text-align:center}
.kv-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.kv{border:1px solid var(--line);border-radius:10px;padding:11px 13px;background:var(--surface)}
.kv .k{font-weight:700;font-size:13.5px}
.kv .v{font-family:var(--mono);font-size:13px;color:var(--red-ink);margin:2px 0}
.kv .note{font-size:12.5px;color:var(--ink-soft)}
.swatch{display:inline-block;width:14px;height:14px;border-radius:3px;border:1px solid rgba(0,0,0,.25);vertical-align:-2px;margin-right:6px}

/* ---------- Decision trees ---------- */
.tree-picker{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin:1.2em 0}
.tree-stage{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-sm);padding:0;overflow:hidden}
.tree-stage header{background:var(--rail-bg);color:#fff;padding:14px 18px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.tree-stage header h2{margin:0;font-size:1.1rem;color:#fff}
.tree-stage header .sum{color:var(--rail-soft);font-size:13px;font-weight:400}
.tree-body{padding:18px}
.node-card{border:1px solid var(--line-strong);border-radius:12px;padding:16px 18px;background:var(--surface-2)}
.node-card .step-tag{font:700 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint)}
.node-card.q .qmark{color:var(--info)}
.node-card .qtext{font-size:1.12rem;font-weight:600;margin:.3em 0 .9em}
.node-card.cause{background:var(--red-wash);border-color:var(--red-line)}
.node-card.cause .step-tag{color:var(--red-ink)}
.node-card.action{background:var(--info-wash);border-color:#bcd9f1}
.tree-actions{display:flex;flex-wrap:wrap;gap:10px}
.tree-actions button{border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);font:700 14px/1 inherit;padding:11px 18px;border-radius:10px;cursor:pointer}
.tree-actions button.yes{border-color:var(--ok);color:var(--ok)}
.tree-actions button.no{border-color:var(--red);color:var(--red-ink)}
.tree-actions button.next{background:var(--rail-bg);color:#fff;border-color:#000}
.tree-actions button:hover{filter:brightness(.97);transform:translateY(-1px)}
.tip{margin-top:.8em;font-size:13.5px;color:var(--ink-soft);border-left:3px solid var(--warn);padding-left:10px}
.trail{margin:14px 0 0;font-size:12.5px;color:var(--ink-faint)}
.trail b{color:var(--ink-soft)}
.restart{background:none;border:0;color:var(--red-ink);font:600 13px/1 inherit;cursor:pointer;text-decoration:underline;padding:0;margin-top:8px}

/* ---------- Bench tools (calculators) ---------- */
.tool{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-sm);padding:18px 20px;margin:1.1em 0}
.tool h2{margin:0 0 .2em;font-size:1.12rem}
.tool .hint{color:var(--ink-soft);font-size:13.5px;margin:0 0 1em}
.tool label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-soft);margin:0 0 4px}
.field-row{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end}
.field{flex:1;min-width:120px}
.tool input[type=text],.tool input[type=number],.tool select{width:100%;height:42px;border:1px solid var(--line-strong);border-radius:9px;background:var(--surface-2);color:var(--ink);padding:0 12px;font-size:15px;font-family:var(--mono)}
.tool input:focus,.tool select:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(216,30,44,.18)}
.readout{margin-top:14px;padding:14px 16px;border-radius:10px;background:var(--rail-bg);color:#fff;font-family:var(--mono);font-size:1.15rem;display:flex;flex-wrap:wrap;gap:6px 18px;align-items:baseline}
.readout .big{color:#ff8b92;font-size:1.5rem;font-weight:700}
.readout small{color:var(--rail-soft);font-size:.7em;font-family:var(--sans)}
.band-row{display:flex;gap:8px;flex-wrap:wrap;margin:.6em 0}
.resistor-vis{height:46px;border-radius:8px;border:1px solid var(--line-strong);display:flex;align-items:stretch;overflow:hidden;background:repeating-linear-gradient(90deg,#e8d9b0,#e8d9b0 8px)}
.resistor-vis .b{width:13px}

/* ---------- Glossary ---------- */
.glossary-controls{display:flex;flex-wrap:wrap;gap:10px;margin:1em 0}
.glossary-controls input{flex:1;min-width:200px;height:42px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);color:var(--ink);padding:0 14px;font-size:15px}
.glossary-controls input:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(216,30,44,.18)}
.chip-row{display:flex;flex-wrap:wrap;gap:6px}
.chip{border:1px solid var(--line-strong);background:var(--surface);color:var(--ink-soft);border-radius:99px;padding:6px 13px;font-size:13px;font-weight:600;cursor:pointer}
.chip.active{background:var(--red);color:#fff;border-color:var(--red)}
.gloss-item{padding:13px 0;border-bottom:1px solid var(--line)}
.gloss-item h3{margin:0 0 2px;font-size:1.02rem;display:flex;align-items:baseline;gap:9px;flex-wrap:wrap}
.gloss-item .abbr{font-family:var(--mono);font-size:13px;color:#fff;background:var(--red);border-radius:5px;padding:1px 7px}
.gloss-item .cat{font-size:11px;color:var(--ink-faint);font-weight:700;text-transform:uppercase;letter-spacing:.05em}
.gloss-item p{margin:0;color:var(--ink-soft);font-size:14.5px}
.empty{color:var(--ink-faint);padding:20px 0;font-style:italic}

/* compact dropdown controls (section jump · category filter) — replaces chip rows */
.toc-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:.2em 0 1.7em}
.toc-bar label{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint)}
.toc-bar select,.filter-select{height:44px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);color:var(--ink);padding:0 40px 0 14px;font-size:15px;min-width:240px;max-width:100%;cursor:pointer;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 13px center}
.toc-bar select:focus,.filter-select:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(216,30,44,.18)}

/* ---------- Standards crosswalk ---------- */
.std-card{border:1px solid var(--line);border-left:4px solid var(--red);border-radius:0 12px 12px 0;background:var(--surface);box-shadow:var(--shadow-sm);padding:16px 18px;margin:12px 0}
.std-card h3{margin:0 0 2px;font-size:1.05rem}
.std-card .scope{color:var(--ink-faint);font-size:12.5px;font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.std-card p{margin:.5em 0;color:var(--ink-soft);font-size:14.5px}
.std-card .mods{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.std-card .mods a{font-size:12.5px;background:var(--surface-3);color:var(--ink);border-radius:7px;padding:4px 9px;text-decoration:none;border:1px solid var(--line)}
.std-card .mods a:hover{border-color:var(--red);color:var(--red-ink)}

/* ---------- Resources ---------- */
.res-group{margin:1.8em 0;scroll-margin-top:70px}
.res-group h2{font-size:1.15rem;margin:0 0 .15em}
.res-group .intro{color:var(--ink-soft);font-size:14px;margin:.1em 0 .8em;max-width:64ch}
.res-list{display:grid;gap:10px}
a.res-item{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;text-decoration:none;color:var(--ink);
  border:1px solid var(--line);border-radius:12px;background:var(--surface);box-shadow:var(--shadow-sm);padding:13px 16px;transition:.15s}
a.res-item:hover{border-color:var(--red);transform:translateY(-1px)}
.res-item .res-name{font-weight:700;font-size:15px}
.res-item .ext{color:var(--ink-faint);font-weight:400}
a.res-item:hover .res-name{color:var(--red-ink)}
.res-item p{margin:3px 0 0;color:var(--ink-soft);font-size:13.5px;line-height:1.5}
.res-item .badge{flex:none;margin-top:2px}

/* ============================================================================
   TOOLKIT — printable documents
   ========================================================================== */
.doc-toolbar{position:sticky;top:0;z-index:20;display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:0 0 18px;box-shadow:var(--shadow-sm)}
.doc-toolbar .lhs{display:flex;align-items:center;gap:10px}
.doc-toolbar .hint{color:var(--ink-faint);font-size:12.5px}
.doc{background:#fff;color:#111;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);padding:30px 34px;margin:0 auto 30px;max-width:820px}
.doc *{color:#111}
.doc .doc-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;border-bottom:3px solid var(--red);padding-bottom:12px;margin-bottom:16px}
.doc .doc-head .title h1{margin:0;font-size:1.45rem;letter-spacing:-.01em}
.doc .doc-head .title .sub{margin:2px 0 0;color:#555;font-size:13px}
.doc .doc-head .mark{display:flex;align-items:center;gap:8px;font-weight:800;color:#15181d;font-size:13px;letter-spacing:.04em}
.doc .doc-head .mark .sq{width:26px;height:26px;border-radius:6px;background:var(--red);color:#fff;display:grid;place-items:center}
.doc .doc-meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:0;border:1px solid #cfd5db;border-radius:7px;overflow:hidden;margin-bottom:16px}
.doc .doc-meta .cell{padding:8px 11px;border-right:1px solid #e2e6ea;border-bottom:1px solid #e2e6ea}
.doc .doc-meta .cell label{display:block;font-size:9.5px;letter-spacing:.08em;text-transform:uppercase;color:#777;font-weight:700;margin-bottom:5px}
.doc .doc-meta .cell .fill{height:18px;border-bottom:1px dotted #aaa}
.doc h2.sec{font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;color:#fff;background:#15181d;padding:6px 11px;border-radius:5px;margin:20px 0 10px}
.doc table.form{width:100%;border-collapse:collapse;font-size:13px}
.doc table.form th{background:#f1f3f5;color:#222;text-align:left;font-size:10.5px;letter-spacing:.05em;text-transform:uppercase;padding:7px 9px;border:1px solid #cfd5db}
.doc table.form td{border:1px solid #cfd5db;padding:0;height:30px}
.doc table.form td .fill{height:100%;min-height:28px}
.doc table.form td.label{padding:6px 9px;background:#fafbfc;font-weight:600;font-size:12.5px}
.doc .checkline{display:flex;align-items:flex-start;gap:10px;padding:7px 0;border-bottom:1px solid #eceff1;font-size:13.5px}
.doc .checkline .box{flex:none;width:16px;height:16px;border:1.5px solid #15181d;border-radius:3px;margin-top:2px}
.doc .writein{border-bottom:1px dotted #999;min-height:20px;flex:1}
.doc .note{font-size:11.5px;color:#666;margin-top:6px}
.doc .twocol{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.doc .sign-row{display:grid;grid-template-columns:2fr 1fr 1fr;gap:14px;margin-top:18px}
.doc .sign-row .s label{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:#777;font-weight:700}
.doc .sign-row .s .fill{height:26px;border-bottom:1px solid #15181d}
.pocket-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pcard{border:1.5px solid #15181d;border-radius:8px;padding:12px 13px;background:#fff;break-inside:avoid}
.pcard h3{margin:0 0 6px;font-size:.95rem;border-bottom:2px solid var(--red);padding-bottom:4px;display:flex;justify-content:space-between;align-items:center}
.pcard h3 .sq{font-size:11px;background:var(--red);color:#fff;border-radius:4px;padding:1px 6px}
.pcard table{width:100%;font-size:11.5px;border-collapse:collapse}
.pcard td{padding:2px 4px;border-bottom:1px solid #eee}
.pcard .mono{font-family:var(--mono)}

/* Printable docs & pocket cards are an always-light "paper" surface,
   independent of OS dark mode, and must never overflow on narrow screens.
   (Without this, dark-mode table cells render as black boxes.) */
.doc, .doc table, .doc thead, .doc tbody, .doc tr, .doc td,
.pcard, .pcard table, .pcard tbody, .pcard tr, .pcard td{ background-color:#fff; }
.doc table.form th{ background-color:#f1f3f5; color:#222; }
.doc table.form td.label{ background-color:#fafbfc; }
.doc h2.sec{ background-color:#15181d; color:#fff; }
.doc table.form, .pcard table{ table-layout:fixed; width:100%; }
.doc td, .doc th, .pcard td{ overflow-wrap:anywhere; word-break:break-word; }
@media screen and (max-width:880px){
  .doc{ padding:20px 15px; }
  .pocket-grid{ grid-template-columns:1fr; }
  .doc table.form th, .doc table.form td{ font-size:11px; }
  .doc table.form th{ padding:6px 5px; }
  .doc .doc-meta{ grid-template-columns:1fr 1fr; }
}

/* ---------- desktop ---------- */
@media (min-width:880px){
  .topbar,.scrim{display:none}
  .sidebar{transform:none}
  .content{margin-left:var(--sidebar-w);max-width:none;padding:48px 0 90px}
  .content>*{max-width:var(--maxw);margin-left:auto;margin-right:auto;padding-left:40px;padding-right:40px}
  .content.is-home{max-width:none}
  .content.is-home>*{max-width:980px}
  .content.wide>*{max-width:1000px}
  .hero h1{font-size:2.5rem}
}

/* ---------- print ---------- */
@media print{
  :root{--maxw:none}
  body{background:#fff;color:#000;font-size:11pt}
  .topbar,.sidebar,.scrim,.site-foot,.pager,.doc-toolbar,.no-print,.complete-row,.tree-actions,.glossary-controls,.rail-search{display:none !important}
  .content{margin:0 !important;padding:0 !important;max-width:none !important}
  .content>*{max-width:none !important;padding:0 !important;margin:0 !important}
  .doc{box-shadow:none;border:0;padding:0;margin:0;max-width:none}
  .doc h2.sec{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .doc .doc-head{break-after:avoid}
  .pcard,.std-card,.node-card,table,tr{break-inside:avoid}
  a{color:#000;text-decoration:none}
  .print-only{display:block !important}
  @page{margin:14mm}
}
.print-only{display:none}