/* ==========================================================================
   atelier.css — CivilWorks Atelier skin, loaded last.
   Light mode = aged drafting parchment, sepia ink, plum and brass.
   Dark mode  = blueprint: Prussian blue paper with chalk-white linework and brass.
   ========================================================================== */
:root { --font-display: "Playfair Display", Georgia, "Times New Roman", serif; --font-body: "Inter", "Segoe UI", system-ui, sans-serif; --font-mono: "Courier Prime", "Courier New", ui-monospace, monospace; --font-script: "Playfair Display", Georgia, serif; }
[data-accent="atelier"] { --purple: #6b2d5c; --purple-ink: #57204a; --accent-2: #a8743a; --accent-3: #2f5d62; --glow: 168, 116, 58; --navy: #3a1f33; --brass: #a8743a; --brass-2: #d9b06a; --verdigris: #2f5d62; --oxblood: #7d2a22; }
[data-mode="light"][data-accent="atelier"] {
  --bg: #efe4cc; --bg-2: #e6d7b8; --surface: #fbf5e6; --ink: #2b1f19; --muted: #6c5a49; --line: #d6c39d;
  --glass: rgba(251, 245, 230, .86); --glass-brd: rgba(90, 60, 30, .18); --purple-soft: #ecd9e3; --purple-tint: #f6ece9;
  --input-ink: #1b3f8a; --hatch: rgba(60, 40, 20, .3); --paper-ink: 60, 40, 22;
  --shadow: 0 1px 0 rgba(255, 255, 255, .6) inset, 0 1px 2px rgba(60, 40, 20, .08), 0 10px 26px -10px rgba(60, 40, 20, .28);
  --shadow-lg: 0 2px 6px rgba(60, 40, 20, .1), 0 28px 60px -14px rgba(60, 40, 20, .35);
  --mesh-a: transparent; --mesh-b: transparent;
  --c1: #2f5d8a; --c2: #b5651d; --c3: #3d7a4f; --c4: #9b3d5a; --c5: #6b4c9a; --c6: #b38b1d;
}
[data-mode="dark"][data-accent="atelier"] {
  --bg: #0e2443; --bg-2: #12305a; --surface: #102a4e; --ink: #eaf2ff; --muted: #a7bddc; --line: #2c5385;
  --purple: #d4a85a; --purple-ink: #f2cf8b; --accent-2: #7fb6ea; --accent-3: #8fd0c4; --navy: #f4e6c4; --on-accent: #10233f;
  --glass: rgba(14, 36, 67, .84); --glass-brd: rgba(200, 225, 255, .14); --purple-soft: #23406a; --purple-tint: #15335c;
  --input-ink: #ffd88f; --hatch: rgba(220, 235, 255, .28); --paper-ink: 225, 238, 255;
  --shadow: 0 1px 2px rgba(0, 0, 0, .35), 0 12px 30px -12px rgba(0, 0, 0, .6); --shadow-lg: 0 2px 8px rgba(0, 0, 0, .4), 0 30px 70px -12px rgba(0, 0, 0, .7);
  --mesh-a: transparent; --mesh-b: transparent;
}
[data-mode="dark"][data-accent="atelier"] .btn.primary { color: #10233f; }

/* ---------- page canvas & paper ---------- */
html { background: var(--bg); }
body, [data-mode] body { background: transparent !important; }
#vbg { position: fixed; inset: 0; width: 100vw; height: 100vh; z-index: -1; pointer-events: none; display: block; }
.vbg-off #vbg { opacity: .55; }
body::before { content: ""; position: fixed; inset: 0; z-index: -2; background: var(--bg); }

/* ---------- typography ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -.005em; }
h1 { font-weight: 800; }
[data-accent="atelier"] h1, [data-accent="atelier"] h2 { color: var(--navy); }
.eyebrow { font-family: var(--font-mono); letter-spacing: .16em; color: var(--accent-2); }
.eyebrow::before { background: var(--accent-2) !important; }
.lib-hero h1, .tk-hero h1 { font-style: normal; }
.lib-hero h1 em, .hero h1 em, .at-hero h1 em { font-style: italic; color: var(--purple); font-weight: 700; }
.ornament { display: flex; align-items: center; gap: 14px; color: var(--accent-2); margin: 26px 0; font-family: var(--font-display); }
.ornament::before, .ornament::after { content: ""; flex: 1; height: 0; border-top: 1px solid currentColor; border-bottom: 1px solid currentColor; padding-top: 2px; opacity: .55; }

/* ---------- surfaces: plates with a fine double rule ---------- */
.tk-card, .lab-card, .est-card, .strata-card, .strata-kpis div, .card, .panel, .toolcard, .at-card, .plan-card, .fs-card {
  background: var(--surface); border: 1px solid var(--line); outline: 1px solid color-mix(in srgb, var(--line) 70%, transparent); outline-offset: -5px;
}
.tk-card:hover, .lab-card:hover, .est-card:hover, .at-card:hover { border-color: var(--accent-2); outline-color: color-mix(in srgb, var(--accent-2) 45%, transparent); }
.btn.primary { background: linear-gradient(180deg, color-mix(in srgb, var(--purple) 88%, #fff), var(--purple)); border: 1px solid color-mix(in srgb, var(--purple) 70%, #000); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .25), 0 2px 0 color-mix(in srgb, var(--purple) 60%, #000); }
.btn.primary:hover { filter: brightness(1.06); }
.btn { border-color: color-mix(in srgb, var(--accent-2) 45%, var(--line)); }
.btn.brass { background: linear-gradient(180deg, var(--brass-2, #d9b06a), var(--brass, #a8743a)); color: #2b1f19; border: 1px solid #7c5422; font-weight: 700; }
.chip.on, .tk-tab.on { box-shadow: inset 0 0 0 1px var(--accent-2); }

/* ---------- navigation ---------- */
.nav { background: var(--glass) !important; border-bottom: 3px double color-mix(in srgb, var(--accent-2) 55%, transparent) !important; backdrop-filter: saturate(1.1) blur(8px); }
.brand { font-family: var(--font-display); font-weight: 800; letter-spacing: .01em; }
.brand .bn i { font-style: italic; color: var(--accent-2); font-weight: 700; }
.brand img.lm { width: auto !important; height: 34px !important; border-radius: 0 !important; box-shadow: none !important; filter: drop-shadow(0 1px 0 rgba(255, 255, 255, .5)); }
.brand img.lm-d { display: none; }
[data-mode="dark"] .brand img.lm-l { display: none; } [data-mode="dark"] .brand img.lm-d { display: inline-block; }
.foot .brand img.lm { height: 30px !important; }
.at-logo { display: block; width: min(300px, 70vw); height: auto; margin: 0 0 10px; }
.at-logo.d { display: none; } [data-mode="dark"] .at-logo.l { display: none; } [data-mode="dark"] .at-logo.d { display: block; }
.nav-links a { font-weight: 600; }
.nav-links a[aria-current="page"] { color: var(--purple-ink); background: var(--purple-tint); box-shadow: inset 0 -2px 0 var(--accent-2); }
.nav-auth { display: flex; align-items: center; gap: 8px; margin-left: 6px; }
.nav-auth .btn { padding: 8px 14px; font-size: .82rem; }
.nav-user { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 4px 10px 4px 4px; font: 600 .8rem var(--font-body); color: var(--ink); cursor: pointer; text-decoration: none; }
.nav-user i { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; background: var(--purple); color: #fff; font-style: normal; font: 700 .78rem var(--font-display); }
.plan-badge { font: 700 .62rem var(--font-mono); letter-spacing: .08em; text-transform: uppercase; padding: 2px 6px; border-radius: 4px; border: 1px solid var(--accent-2); color: var(--accent-2); }
.plan-badge.pro { background: linear-gradient(180deg, #e2bf7a, #b8843f); color: #2b1f19; border-color: #7c5422; }
@media (max-width: 860px) { .nav-auth .btn { padding: 7px 10px; } .nav-user span { display: none; } }

/* ---------- footer ---------- */
.foot { border-top: 3px double color-mix(in srgb, var(--accent-2) 50%, transparent); background: color-mix(in srgb, var(--surface) 70%, transparent); }
.foot .brand { font-size: 1rem; }
.foot-grid { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 22px; padding: 26px 0 8px; }
.foot-grid h4 { font: 700 .74rem var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent-2); margin: 0 0 8px; }
.foot-grid a { display: block; color: var(--muted); text-decoration: none; padding: 3px 0; font-size: .9rem; }
.foot-grid a:hover { color: var(--purple-ink); }
.foot-grid p { color: var(--muted); font-size: .88rem; margin: 6px 0; max-width: 40ch; }
.foot-base { display: flex; flex-wrap: wrap; gap: 10px 18px; justify-content: space-between; padding: 12px 0 22px; border-top: 1px solid var(--line); color: var(--muted); font: 500 .8rem var(--font-mono); }
.foot-base button { background: none; border: 0; color: inherit; font: inherit; cursor: pointer; text-decoration: underline dotted; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } .foot-grid > div:first-child { grid-column: 1 / -1; } }

/* ---------- locks & gating ---------- */
.pro-lock { position: relative; }
.pro-lock::after { content: "PRO"; position: absolute; top: -7px; right: -7px; font: 700 .55rem var(--font-mono); letter-spacing: .06em; padding: 2px 5px; border-radius: 4px; background: linear-gradient(180deg, #e2bf7a, #b8843f); color: #2b1f19; border: 1px solid #7c5422; pointer-events: none; }
.need-login { position: relative; }

/* ---------- auth dialog ---------- */
.auth-dlg { border: 0; padding: 0; background: transparent; max-width: min(460px, 94vw); width: 100%; }
.auth-dlg::backdrop { background: rgba(30, 20, 15, .45); backdrop-filter: blur(2px); }
.auth-box { background: var(--surface); color: var(--ink); border: 1px solid var(--line); outline: 1px solid var(--line); outline-offset: -6px; border-radius: 16px; padding: 26px 24px 20px; box-shadow: var(--shadow-lg); }
.auth-box h2 { margin: 0 0 4px; font-size: 1.6rem; }
.auth-box .muted { margin: 0 0 14px; font-size: .9rem; }
.auth-tabs { display: flex; gap: 4px; padding: 4px; background: var(--bg-2); border-radius: 12px; margin: 0 0 16px; }
.auth-tabs button { flex: 1; border: 0; background: transparent; padding: 9px; border-radius: 9px; font: 600 .86rem var(--font-body); color: var(--muted); cursor: pointer; }
.auth-tabs button[aria-selected="true"] { background: var(--surface); color: var(--purple-ink); box-shadow: var(--shadow); }
.auth-form { display: grid; gap: 10px; }
.auth-form label { display: grid; gap: 4px; font: 600 .74rem var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.auth-form input, .auth-form select { font: 500 .95rem var(--font-body); padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); text-transform: none; letter-spacing: 0; }
.auth-form .btn { justify-content: center; }
.auth-err { color: #a33224; font-size: .86rem; min-height: 1.2em; margin: 0; }
.auth-note { font-size: .78rem; color: var(--muted); margin: 12px 0 0; border-top: 1px dashed var(--line); padding-top: 10px; }
.auth-x { float: right; background: none; border: 0; font-size: 1.4rem; line-height: 1; cursor: pointer; color: var(--muted); }

/* ---------- pricing & account ---------- */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 20px 0 30px; }
.plan-card { border-radius: 18px; padding: 22px 20px; display: flex; flex-direction: column; gap: 10px; position: relative; box-shadow: var(--shadow); }
.plan-card.featured { border-color: var(--accent-2); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-2) 45%, transparent), var(--shadow-lg); }
.plan-card .ribbon { position: absolute; top: 14px; right: -6px; background: linear-gradient(180deg, #e2bf7a, #b8843f); color: #2b1f19; font: 700 .66rem var(--font-mono); letter-spacing: .1em; padding: 4px 10px; border-radius: 3px 0 0 3px; }
.plan-card h3 { font-size: 1.5rem; margin: 0; }
.plan-card .price { font: 800 2.3rem var(--font-display); color: var(--purple-ink); }
.plan-card .price small { font: 500 .85rem var(--font-body); color: var(--muted); }
.plan-card ul { list-style: none; padding: 0; margin: 4px 0 10px; display: grid; gap: 6px; font-size: .92rem; }
.plan-card li::before { content: "✦ "; color: var(--accent-2); }
.plan-card li.no { color: var(--muted); text-decoration: line-through; opacity: .7; }
.plan-card li.no::before { content: "– "; }
.plan-card .btn { margin-top: auto; justify-content: center; }
.cmp { width: 100%; border-collapse: collapse; font-size: .92rem; background: var(--surface); border: 1px solid var(--line); }
.cmp th, .cmp td { padding: 9px 12px; border-bottom: 1px solid var(--line); text-align: left; }
.cmp th { font: 700 .76rem var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--accent-2); background: var(--bg-2); }
.cmp td:not(:first-child), .cmp th:not(:first-child) { text-align: center; }
.cmp-wrap { overflow-x: auto; }
.acct { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 18px; align-items: start; }
@media (max-width: 860px) { .acct { grid-template-columns: 1fr; } }
.at-card { border-radius: 18px; padding: 20px; box-shadow: var(--shadow); }
.at-card h3 { margin: 0 0 10px; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; font-size: .92rem; }
.kv dt { color: var(--muted); font: 600 .74rem var(--font-mono); letter-spacing: .06em; text-transform: uppercase; padding-top: 3px; }
.kv dd { margin: 0; }
.usage-bar { height: 8px; border-radius: 4px; background: var(--bg-2); overflow: hidden; }
.usage-bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent-2), var(--purple)); }
.saved-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.saved-list li { display: flex; gap: 10px; align-items: center; justify-content: space-between; border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; font-size: .9rem; background: var(--bg); }

/* ---------- home ---------- */
.at-hero { padding: 64px 0 30px; position: relative; }
.at-hero .kicker { font: 700 .78rem var(--font-mono); letter-spacing: .22em; text-transform: uppercase; color: var(--accent-2); display: inline-flex; gap: 10px; align-items: center; }
.at-hero .kicker::before, .at-hero .kicker::after { content: "✦"; }
.at-hero h1 { font-size: clamp(2.6rem, 6.4vw, 5.2rem); line-height: .98; margin: 16px 0 18px; max-width: 15ch; }
.at-hero p.lede { font-size: 1.12rem; max-width: 60ch; color: var(--muted); }
.at-hero .actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 0; }
.at-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 34px 0 0; }
.at-stats div { border: 1px solid var(--line); background: var(--glass); border-radius: 14px; padding: 12px 14px; }
.at-stats b { display: block; font: 800 1.9rem var(--font-display); color: var(--purple-ink); }
.at-stats span { font: 600 .72rem var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.disc-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 14px; margin: 18px 0 8px; }
.disc-card { position: relative; display: flex; flex-direction: column; gap: 6px; padding: 18px 18px 16px; border-radius: 18px; text-decoration: none; color: var(--ink); background: var(--surface); border: 1px solid var(--line); outline: 1px solid color-mix(in srgb, var(--line) 70%, transparent); outline-offset: -6px; box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s, border-color .2s; overflow: hidden; }
.disc-card:hover { transform: translateY(-3px); border-color: var(--accent-2); box-shadow: var(--shadow-lg); }
.disc-card svg.disc-art { width: 100%; height: 110px; display: block; margin: -2px 0 6px; }
.disc-card .no { font: 700 .7rem var(--font-mono); letter-spacing: .14em; color: var(--accent-2); }
.disc-card b { font: 800 1.35rem var(--font-display); color: var(--navy); }
.disc-card small { color: var(--muted); font-size: .9rem; }
.disc-card em { font-style: normal; font: 700 .76rem var(--font-mono); color: var(--purple-ink); margin-top: auto; padding-top: 6px; }
.disc-card .art-ink { stroke: var(--ink); fill: none; stroke-width: 1.3; stroke-linecap: round; stroke-linejoin: round; }
.disc-card .art-acc { stroke: var(--purple); fill: none; stroke-width: 1.8; }
.disc-card .art-fill { fill: color-mix(in srgb, var(--accent-2) 22%, transparent); stroke: none; }
.disc-card .art-water { fill: color-mix(in srgb, #2f7fe0 22%, transparent); stroke: #2f6fb0; stroke-width: 1; }
.feat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.feat { border-radius: 18px; padding: 18px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); }
.feat h3 { margin: 6px 0; font-size: 1.25rem; }
.feat p { color: var(--muted); margin: 0 0 10px; font-size: .94rem; }
.feat .demo-mini { border-radius: 12px; border: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 60%, var(--surface)); overflow: hidden; }
.feat .demo-mini svg { display: block; width: 100%; height: auto; }
.sec-h { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 10px; margin: 48px 0 6px; }
.sec-h h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); margin: 4px 0 0; }
.quote-band { margin: 44px 0; padding: 26px 24px; border-radius: 18px; border: 1px solid var(--line); background: var(--glass); text-align: center; font: italic 600 clamp(1.15rem, 2.4vw, 1.6rem)/1.4 var(--font-display); color: var(--navy); }
.quote-band cite { display: block; margin-top: 8px; font: 600 .78rem var(--font-mono); letter-spacing: .1em; color: var(--muted); font-style: normal; }

/* ---------- discipline hub ---------- */
.hub-hero { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 22px; align-items: center; padding: 34px 0 10px; }
@media (max-width: 900px) { .hub-hero { grid-template-columns: 1fr; } }
.hub-hero h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); margin: 10px 0 12px; }
.hub-hero .hub-art { border-radius: 18px; border: 1px solid var(--line); background: var(--glass); padding: 8px; box-shadow: var(--shadow); }
.hub-hero .hub-art svg { width: 100%; height: auto; display: block; }
.hub-quick { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin: 18px 0 26px; }
.hub-quick a { display: grid; gap: 4px; padding: 14px 16px; border-radius: 14px; text-decoration: none; color: var(--ink); background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); }
.hub-quick a:hover { border-color: var(--accent-2); }
.hub-quick b { font: 700 1.05rem var(--font-display); color: var(--purple-ink); }
.hub-quick small { color: var(--muted); font-size: .86rem; }
.hub-quick span { font: 700 .66rem var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--accent-2); }
.hub-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 14px; }
.hub-tabs a { text-decoration: none; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--muted); font: 600 .84rem var(--font-body); }
.hub-tabs a[aria-current="page"] { background: var(--purple); color: #fff; border-color: var(--purple); }
[data-mode="dark"] .hub-tabs a[aria-current="page"] { color: #10233f; }

/* ---------- interactive lab (organised) ---------- */
.lab-layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 18px; align-items: start; margin-top: 10px; }
@media (max-width: 960px) { .lab-layout { grid-template-columns: 1fr; } }
.lab-side { position: sticky; top: 84px; max-height: calc(100vh - 100px); overflow: auto; padding: 14px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line); outline: 1px solid color-mix(in srgb, var(--line) 70%, transparent); outline-offset: -5px; box-shadow: var(--shadow); }
@media (max-width: 960px) { .lab-side { position: static; max-height: none; } }
.lab-side h2 { font-size: 1.15rem; margin: 0 0 8px; }
.lab-wing { margin: 12px 0 0; }
.lab-wing > p { margin: 0 0 4px; font: 700 .7rem var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent-2); display: flex; justify-content: space-between; }
.lab-node { display: flex; width: 100%; justify-content: space-between; gap: 8px; text-align: left; border: 0; background: transparent; padding: 6px 8px; border-radius: 8px; font: 500 .86rem var(--font-body); color: var(--ink); cursor: pointer; }
.lab-node span, .lab-wing > p span { font: 600 .72rem var(--font-mono); color: var(--muted); }
.lab-node:hover { background: var(--purple-tint); }
.lab-node.on { background: var(--purple); color: #fff; } .lab-node.on span { color: #fff; }
[data-mode="dark"] .lab-node.on { color: #10233f; } [data-mode="dark"] .lab-node.on span { color: #10233f; }
.lab-lvs { display: flex; flex-wrap: wrap; gap: 4px; } .lab-lvs .chip { padding: 5px 9px; font-size: .74rem; }
.lab-rand { margin-top: 14px; width: 100%; justify-content: center; }
.lab-feat { margin: 0 0 16px; }
.lab-feat-row { display: flex; gap: 10px; overflow-x: auto; padding: 4px 2px 10px; scroll-snap-type: x mandatory; }
.lab-feat-chip { flex: 0 0 210px; scroll-snap-align: start; display: grid; gap: 3px; padding: 12px 14px; border-radius: 14px; text-decoration: none; color: var(--ink); background: linear-gradient(160deg, var(--surface), var(--purple-tint)); border: 1px solid var(--line); box-shadow: var(--shadow); }
.lab-feat-chip b { font: 700 .95rem/1.25 var(--font-display); color: var(--navy); }
.lab-feat-chip small { font: 600 .68rem var(--font-mono); color: var(--accent-2); letter-spacing: .06em; }
.lab-feat-chip:hover { border-color: var(--accent-2); }
.lab-badges { display: flex; gap: 6px; align-items: center; margin: -2px 0 6px; }
.lab-lv { font: 700 .62rem var(--font-mono); letter-spacing: .08em; text-transform: uppercase; padding: 2px 7px; border-radius: 4px; border: 1px solid currentColor; }
.lab-lv.lv1 { color: #2d6a4f; } .lab-lv.lv2 { color: var(--accent-2); } .lab-lv.lv3 { color: #a33224; }
[data-mode="dark"] .lab-lv.lv1 { color: #8fe0b0; } [data-mode="dark"] .lab-lv.lv3 { color: #ff9d8a; }
.lab-cat { font: 600 .68rem var(--font-mono); color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.lab-wide { margin-left: auto; border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: 8px; width: 28px; height: 26px; cursor: pointer; flex: none; }
.lab-page .lab-grid { grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); }
.lab-card.wide { grid-column: 1 / -1; }
.lab-card.wide svg { max-height: 70vh; }
.lab-card.flash { animation: labflash 1.6s ease; }
@keyframes labflash { 0%, 100% { box-shadow: var(--shadow); } 30% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-2) 60%, transparent), var(--shadow-lg); } }
.lab-bar { margin-top: 0; }
#home-beam .hb-ctl { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; margin: 8px 0 0; font: 500 .86rem var(--font-body); color: var(--muted); }
#home-beam .hb-ctl input { accent-color: var(--purple); }
#home-beam .hb-out { font: 700 .86rem var(--font-mono); color: var(--purple-ink); }
#home-beam .fs-stage { border-radius: 12px; }
.nav-dd { position: relative; }
.nav-dd-btn { border: 0; background: transparent; color: var(--muted); font: 600 .85rem/1 var(--font-body); padding: 8px 12px; border-radius: 999px; cursor: pointer; white-space: nowrap; }
.nav-dd-btn:hover, .nav-dd.open .nav-dd-btn { color: var(--ink); background: var(--purple-tint); }
.nav-dd-btn.on { color: var(--purple-ink); background: var(--purple-tint); box-shadow: inset 0 -2px 0 var(--accent-2); }
.nav-dd-menu { position: absolute; top: calc(100% + 8px); left: 0; min-width: 230px; display: none; gap: 2px; padding: 8px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-lg); z-index: 80; }
.nav-dd.open .nav-dd-menu { display: grid; }
.nav-dd-menu a { padding: 9px 12px !important; border-radius: 9px; white-space: nowrap; }
.nav-dd-menu a:last-child { border-top: 1px dashed var(--line); margin-top: 4px; }
@media (max-width: 860px) { .nav-dd-btn { display: none; } .nav-dd-menu { display: grid; position: static; box-shadow: none; border: 0; padding: 0; background: none; min-width: 0; } .nav-dd-menu a:last-child { border-top: 0; } }
.nav-auth .btn { white-space: nowrap; }
.lab-mainc { min-width: 0; }
.nav-links { flex-wrap: nowrap; }

/* ---------------------------------------------------------------- construction forms (forms.html) */
.fm-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; margin: 6px 0 18px; }
.fm-proj { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; min-width: 0; }
.fm-chip { display: inline-flex; gap: 6px; padding: 7px 12px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); font-size: .84rem; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fm-chip b { font-family: var(--font-mono); color: var(--purple-ink); }
.btn.sm { padding: 6px 11px; font-size: .78rem; }
.fm-intro p { max-width: 820px; color: var(--muted); }
.fm-cat h2 { font: 700 1.25rem var(--font-display); margin: 26px 0 12px; display: flex; gap: 10px; align-items: center; }
.fm-cat h2 span { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--purple); color: var(--on-accent, #fff); font-size: .9rem; }
.fm-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.fm-card { position: relative; display: flex; flex-direction: column; gap: 6px; padding: 16px 16px 14px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); color: var(--ink); text-decoration: none; box-shadow: var(--shadow); transition: transform .15s, border-color .15s; overflow: hidden; }
.fm-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: linear-gradient(90deg, var(--purple), var(--brass, #a8743a), var(--brass-2, #d9b06a)); }
.fm-card:hover { transform: translateY(-2px); border-color: var(--purple); }
.fm-card b { font: 700 1.02rem var(--font-display); }
.fm-card small { color: var(--muted); line-height: 1.45; }
.fm-code { align-self: flex-start; font: 700 .72rem var(--font-mono); letter-spacing: .08em; padding: 3px 8px; border: 1px solid var(--purple); color: var(--purple-ink); border-radius: 4px; }
.fm-std { font: italic .72rem var(--font-body); color: var(--muted); border-top: 1px dashed var(--line); padding-top: 6px; margin-top: auto; }
.fm-n { position: absolute; top: 14px; right: 14px; font: 700 .7rem var(--font-mono); color: var(--brass, #a8743a); }
.fm-edhead { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; align-items: flex-end; margin-bottom: 14px; }
.fm-edhead h2 { font: 700 1.6rem var(--font-display); margin: 2px 0 0; }
.fm-no { font: 700 .9rem var(--font-mono); color: var(--purple-ink); background: var(--purple-tint); padding: 3px 8px; border-radius: 6px; vertical-align: middle; }
.fm-acts { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.fm-status { display: inline-flex; gap: 6px; align-items: center; font-size: .82rem; color: var(--muted); }
.fm-status select, .fm-in input, .fm-in select, .fm-in textarea, .fm-filters input, .fm-filters select, .fm-dlg input { font: 500 .9rem var(--font-body); color: var(--input-ink); background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; min-width: 0; }
.fm-ed { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 20px; align-items: start; }
.fm-in { display: grid; gap: 14px; min-width: 0; }
.fm-sec { border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px 14px; background: var(--glass); min-width: 0; }
.fm-sec legend { font: 700 .78rem var(--font-body); letter-spacing: .1em; text-transform: uppercase; padding: 3px 10px; border-radius: 999px; background: var(--purple); color: var(--on-accent, #fff); }
.fm-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.fm-f { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.fm-f.w2 { grid-column: 1 / -1; }
.fm-f label { font: 600 .74rem var(--font-body); color: var(--muted); }
.fm-f label i { font-style: normal; opacity: .75; }
.fm-in textarea { resize: vertical; min-height: 64px; }
.fm-checks { display: grid; gap: 6px; }
.fm-ck { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 10px; align-items: center; padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: .86rem; }
.fm-ck input { grid-column: 1 / -1; }
.fm-tw { overflow-x: auto; max-width: 100%; }
.fm-tab { width: 100%; border-collapse: collapse; font-size: .82rem; }
.fm-tab th { text-align: left; font: 700 .7rem var(--font-body); color: var(--muted); padding: 4px; white-space: nowrap; }
.fm-tab td { padding: 2px; }
.fm-tab td input { width: 100%; padding: 6px 7px; font-size: .82rem; }
.fm-tab td.c { font: 700 .8rem var(--font-mono); text-align: right; white-space: nowrap; padding: 0 6px; color: var(--purple-ink); }
.fm-x { border: 0; background: none; color: var(--muted); font-size: 1.1rem; cursor: pointer; }
.fm-tw .btn.sm { margin-top: 6px; }
.fm-sum { display: grid; gap: 4px; }
.fm-sum div { display: flex; justify-content: space-between; gap: 10px; padding: 6px 10px; border-radius: 8px; background: var(--surface); font-size: .86rem; }
.fm-sum div.b { background: var(--purple-tint); border: 1px solid var(--purple); }
.fm-sum b { font-family: var(--font-mono); }
.fm-sigs { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.fm-sig { display: grid; gap: 6px; }
.fm-sig b { font-size: .78rem; color: var(--purple-ink); }
.fm-sig canvas { width: 100%; height: auto; aspect-ratio: 10 / 3; background: repeating-linear-gradient(transparent 0 calc(100% - 22px), rgba(var(--paper-ink), .35) calc(100% - 22px) calc(100% - 21px), transparent calc(100% - 21px)), #fffdf8; border: 1px dashed var(--line); border-radius: 10px; touch-action: none; cursor: crosshair; }
.fm-sig-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto; gap: 6px; }
.fm-prev { position: sticky; top: 76px; display: grid; gap: 16px; max-height: calc(100vh - 96px); overflow: auto; padding: 4px 6px 10px; }
.fm-page { position: relative; box-shadow: var(--shadow-lg); border-radius: 2px; }
.fm-page svg { display: block; width: 100%; height: auto; }
.fm-page::after { content: attr(data-p); position: absolute; right: 8px; top: -10px; font: 700 .68rem var(--font-mono); background: var(--purple); color: var(--on-accent, #fff); padding: 2px 7px; border-radius: 999px; }
.fm-kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-bottom: 14px; }
.fm-kpis div { padding: 14px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); text-align: center; }
.fm-kpis b { display: block; font: 800 1.8rem var(--font-display); color: var(--purple-ink); }
.fm-kpis span { font-size: .78rem; color: var(--muted); }
.fm-kpis .bad b { color: #a33224; }
.fm-filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.fm-filters .sp { flex: 1; }
.fm-filters input[type=search] { flex: 1 1 200px; }
.fm-reg { width: 100%; border-collapse: collapse; font-size: .86rem; background: var(--surface); border-radius: 12px; overflow: hidden; }
.fm-reg th { text-align: left; background: var(--purple); color: var(--on-accent, #fff); padding: 9px 10px; font: 700 .74rem var(--font-body); letter-spacing: .04em; white-space: nowrap; }
.fm-reg td { padding: 8px 10px; border-top: 1px solid var(--line); vertical-align: top; }
.fm-reg tr.od td { background: rgba(163, 50, 36, .07); }
.fm-reg td.acts { white-space: nowrap; }
.fm-reg .mono { font: 700 .82rem var(--font-mono); color: var(--purple-ink); }
.fm-st { font: 700 .74rem var(--font-body); padding: 3px 8px; border-radius: 999px; background: var(--purple-tint); color: var(--purple-ink); white-space: nowrap; }
.fm-empty { padding: 30px; text-align: center; }
.fm-dlg form { display: grid; gap: 10px; min-width: min(460px, 86vw); }
.fm-dlg label { display: grid; gap: 4px; font-size: .8rem; color: var(--muted); }
@media (max-width: 980px) { .fm-ed { grid-template-columns: minmax(0, 1fr); } .fm-prev { position: static; max-height: none; } .fm-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .fm-fields { grid-template-columns: minmax(0, 1fr); } .fm-sig-row { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } .fm-sig-row .btn { grid-column: 1 / -1; } .fm-edhead h2 { font-size: 1.3rem; } }

/* ---------------------------------------------------------------- onsite yard (site-scene.js) */
.os-app { display: grid; gap: 12px; }
.os-top { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; align-items: center; }
.os-ctl { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.os-speed { font-size: .8rem; color: var(--muted); display: inline-flex; gap: 6px; align-items: center; }
.os-speed select { font: 600 .8rem var(--font-body); padding: 5px 8px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); }
.os-main { display: grid; grid-template-columns: minmax(0, 1fr) 290px; gap: 16px; align-items: start; }
.os-compact .os-main { grid-template-columns: minmax(0, 1fr); }
.os-stage { min-width: 0; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); background: #fbf6ea; box-shadow: var(--shadow-lg); }
.os-svg { display: block; width: 100%; height: auto; touch-action: pan-y; user-select: none; }
.os-msg { margin: 0; padding: 9px 14px; font: 600 .86rem var(--font-body); color: #3a1f33; background: #f3ead6; border-top: 1px solid #d6c39d; min-height: 1.4em; }
.os-t { font: 500 10.5px "Inter", "Segoe UI", Arial, sans-serif; fill: #2b1f19; }
.os-t.os-sm { font-size: 9.6px; fill: #4b3c30; } .os-t.os-xs { font-size: 9px; fill: #3b2e22; } .os-t.os-b { font-weight: 700; }
.os-t.os-h { font: 700 13px "Playfair Display", Georgia, serif; fill: #3a1f33; } .os-t.os-dim { font: 700 9px "Inter", Arial, sans-serif; fill: #6b2d5c; }
.os-side { position: sticky; top: 80px; padding: 14px; border-radius: 14px; background: var(--glass); border: 1px solid var(--line); display: grid; gap: 10px; }
.os-side h3 { margin: 0; font: 700 .74rem var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent-2); }
.os-inputs { display: grid; gap: 8px; }
.os-inputs label { display: grid; gap: 2px; font-size: .8rem; color: var(--muted); }
.os-inputs label span { display: flex; justify-content: space-between; } .os-inputs b { color: var(--purple-ink); font-family: var(--font-mono); }
.os-inputs input[type=range] { width: 100%; accent-color: var(--purple); }
.os-stats { display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; margin: 0; font-size: .82rem; }
.os-stats dt { color: var(--muted); } .os-stats dd { margin: 0; text-align: right; font: 700 .82rem var(--font-mono); color: var(--ink); }
.os-exp { display: flex; flex-wrap: wrap; gap: 6px; }
.os-legend { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-top: 18px; }
@media (max-width: 980px) { .os-main { grid-template-columns: minmax(0, 1fr); } .os-side { position: static; } }

/* ---------------------------------------------------------------- studios (studio-kit.js) and sketch studio */
.st-app, .sk-app { display: grid; gap: 12px; }
.st-bar, .sk-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; }
.sk-bar { justify-content: flex-start; }
.st-acts { display: flex; flex-wrap: wrap; gap: 6px; }
.st-pre, .sk-opt { font-size: .8rem; color: var(--muted); display: inline-flex; gap: 6px; align-items: center; }
.st-pre select, .sk-opt select, .st-inputs select { font: 600 .82rem var(--font-body); padding: 6px 8px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); min-width: 0; }
.sk-chk { font-size: .8rem; color: var(--muted); display: inline-flex; gap: 4px; align-items: center; }
.st-main { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 16px; align-items: start; }
.st-stagecol { min-width: 0; display: grid; gap: 10px; }
.st-stage, .sk-stage { position: relative; min-width: 0; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); background: #fbf6ea; box-shadow: var(--shadow-lg); }
.sk-svg { touch-action: none; }
.sk-zoom { position: absolute; right: 10px; top: 10px; display: flex; gap: 4px; }
.st-side { position: sticky; top: 80px; padding: 14px; border-radius: 14px; background: var(--glass); border: 1px solid var(--line); display: grid; gap: 10px; max-height: calc(100vh - 100px); overflow: auto; }
.st-side h3 { margin: 0; font: 700 .74rem var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent-2); }
.st-grp { margin: 6px 0 0; font: 700 .68rem var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--purple-ink); border-top: 1px dashed var(--line); padding-top: 8px; }
.st-help { font-size: .8rem; color: var(--muted); margin: 0; }
.st-checks { display: flex; flex-wrap: wrap; gap: 6px; }
.st-checks .pill { font-size: .76rem; }
.pill.warn { background: #fff1d6; color: #7a5208; } [data-mode="dark"] .pill.warn { background: #3f3110; color: #ffd98a; }
.st-stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; margin: 0; }
.st-stats div { padding: 9px 11px; border-radius: 10px; background: var(--surface); border: 1px solid var(--line); }
.st-stats dt { font-size: .72rem; color: var(--muted); } .st-stats dd { margin: 2px 0 0; font: 700 .92rem var(--font-mono); color: var(--purple-ink); }
.sk-foot { display: grid; gap: 10px; }
.sk-acts { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; } .sk-acts .sp { flex: 1; }
.sk-help { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-top: 18px; }
.sk-help div { padding: 14px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); display: grid; gap: 4px; }
.sk-help b { font: 700 .95rem var(--font-display); color: var(--purple-ink); } .sk-help span { font-size: .86rem; color: var(--muted); }
@media (max-width: 980px) { .st-main { grid-template-columns: minmax(0, 1fr); } .st-side { position: static; max-height: none; } }

/* ---------------------------------------------------------------- interactive wing illustrations (wing-art.js) */
.wing-art { display: block; width: 100%; border-radius: 12px; overflow: hidden; background: color-mix(in srgb, var(--bg-2) 55%, var(--surface)); border: 1px solid color-mix(in srgb, var(--line) 70%, transparent); }
.wing-art .wa-svg { display: block; width: 100%; height: auto; aspect-ratio: 320 / 150; }
.wa-svg * { vector-effect: non-scaling-stroke; }
.wa-ink { stroke: var(--ink); fill: none; stroke-width: 1.3; stroke-linecap: round; stroke-linejoin: round; }
.wa-thin { stroke-width: .8; opacity: .55; } .wa-bold { stroke-width: 2.4; } .wa-dash { stroke-dasharray: 5 4; }
.wa-acc { stroke: var(--purple); fill: none; stroke-width: 1.4; } .wa-acc-t { fill: var(--purple); }
.wa-red { stroke: #b23a2a; fill: #b23a2a; stroke-width: 1.4; } text.wa-red { stroke: none; } .wa-redf { fill: #b23a2a; }
.wa-blue { stroke: #2f6fb0; fill: none; stroke-width: 1.3; } text.wa-blue { fill: #2f6fb0; stroke: none; }
.wa-green { stroke: #3d8a4f; fill: none; stroke-width: 1.4; } .wa-greenf { fill: #3d8a4f; } .wa-green-t { fill: #3d8a4f; }
.wa-f1 { fill: color-mix(in srgb, #d9bd7c 55%, var(--surface)); } .wa-f2 { fill: color-mix(in srgb, #9b7f62 45%, var(--surface)); } .wa-f3 { fill: color-mix(in srgb, #86817b 45%, var(--surface)); }
.wa-dot { fill: var(--ink); opacity: .35; }
.wa-conc { fill: color-mix(in srgb, #cfc8ba 80%, var(--surface)); stroke: var(--ink); stroke-width: 1; }
.wa-steel { fill: color-mix(in srgb, #8693a5 75%, var(--surface)); stroke: var(--ink); stroke-width: 1; }
.wa-timber { fill: color-mix(in srgb, #d6a86a 78%, var(--surface)); stroke: var(--ink); stroke-width: .9; }
.wa-brass { stroke: var(--brass, #a8743a); fill: color-mix(in srgb, var(--brass, #a8743a) 40%, transparent); stroke-width: 1.4; }
.wa-truck { fill: #f2b630; stroke: var(--ink); stroke-width: .8; } .wa-truck2 { fill: var(--purple); stroke: var(--ink); stroke-width: .8; } .wa-wheel { fill: #2b3038; }
.wa-glass { fill: #a9cfe6; stroke: var(--ink); stroke-width: .6; }
.wa-bmd { fill: color-mix(in srgb, var(--purple) 22%, transparent); stroke: var(--purple); stroke-width: 1; } .wa-bmd-on { fill: color-mix(in srgb, var(--purple) 55%, transparent); stroke: var(--purple); stroke-width: 1.2; }
.wa-water { fill: color-mix(in srgb, #4f86c6 32%, transparent); } .wa-foam { fill: #fff; opacity: .85; } .wa-foam-s { fill: none; stroke: #fff; stroke-width: 1.2; opacity: .8; }
.wa-grass { fill: color-mix(in srgb, #86a46a 45%, var(--surface)); } .wa-road { stroke: #3e3e42; stroke-width: 5; fill: none; stroke-linecap: round; } .wa-cl { stroke: #f4f1ea; stroke-width: .8; fill: none; stroke-dasharray: 6 7; }
.wa-grid { stroke: var(--line); stroke-width: .5; opacity: .6; } .wa-pencil { stroke: var(--muted); stroke-width: 1.6; fill: none; opacity: .75; stroke-linecap: round; }
.wa-paper { fill: var(--surface); stroke: var(--ink); stroke-width: 1; } .wa-band { fill: var(--purple); } .wa-white { fill: #fff; }
.wa-t { font: 600 9px var(--font-body); fill: var(--ink); } .wa-small { font-size: 8px; font-weight: 500; }
.disc-card .wing-art { margin: -2px 0 8px; }
.hub-hero .hub-art .wing-art { border: 0; }

/* ---------------------------------------------------------------- studios gallery, home layout, navigation groups */
.st-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.st-card { position: relative; display: flex; flex-direction: column; gap: 6px; padding: 12px 12px 14px; border-radius: 18px; text-decoration: none; color: var(--ink); background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); transition: transform .18s, border-color .18s, box-shadow .18s; }
.st-card:hover { transform: translateY(-3px); border-color: var(--accent-2); box-shadow: var(--shadow-lg); }
.st-card .wing-art { margin-bottom: 4px; }
.st-card .no { font: 700 .66rem var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent-2); padding: 0 4px; }
.st-card b { font: 800 1.18rem var(--font-display); color: var(--navy); padding: 0 4px; }
.st-card small { color: var(--muted); font-size: .86rem; padding: 0 4px; line-height: 1.45; }
.st-card em { font-style: normal; font: 700 .74rem var(--font-mono); color: var(--purple-ink); margin-top: auto; padding: 6px 4px 0; }
.st-how { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; margin: 6px 0 10px; }
.st-how div { padding: 12px 14px; border-radius: 14px; border: 1px dashed var(--line); display: grid; gap: 2px; }
.st-how b { font: 800 1rem var(--font-display); color: var(--purple-ink); } .st-how span { font-size: .84rem; color: var(--muted); }
.st-tabs { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; scrollbar-width: thin; }
.st-tabs a { white-space: nowrap; }
.nav-dd-menu.nav-dd-wide { min-width: 270px; }
.nav-dd-h { margin: 6px 12px 2px; font: 700 .64rem var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent-2); }
.nav-dd-h:first-child { margin-top: 2px; }
.at-hero-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 28px; align-items: center; }
.at-hero-logo { display: grid; place-items: center; }
.at-hero-logo .at-logo { width: min(340px, 80%); margin: 0; filter: drop-shadow(0 6px 14px rgba(60, 40, 20, .18)); }
.at-hero h1 { font-size: clamp(2.2rem, 4.6vw, 3.9rem); }
.disc-grid { gap: 16px; }
@media (max-width: 860px) { .at-hero-grid { grid-template-columns: minmax(0, 1fr); } .at-hero-logo { order: -1; } .at-hero-logo .at-logo { width: min(240px, 70%); } .nav-dd-h { display: none; } }
.disc-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.disc-grid .disc-card { padding: 12px 12px 14px; }
.disc-grid .disc-card b { font-size: 1.12rem; }
.disc-grid .disc-card small { font-size: .82rem; }
@media (max-width: 1100px) { .disc-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 700px) { .disc-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 460px) { .disc-grid { grid-template-columns: minmax(0, 1fr); } }
/* page illustration in the hero: interactive, beside the text on wide screens, hidden on phones */
.lib-hero { position: relative; }
.lib-hero .page-art.wing-art { position: absolute; right: 0; top: 34px; width: 340px; opacity: 1; z-index: 1; pointer-events: auto; box-shadow: var(--shadow); }
@media (min-width: 1000px) { .lib-hero.has-art > p, .lib-hero.has-art > h1, .lib-hero.has-art > .notice { max-width: calc(100% - 380px); } }
@media (max-width: 999px) { .lib-hero .page-art.wing-art { display: none; } }

/* ---------------------------------------------------------------- CPT studio (cpt-ui.js) */
.cp-app { position: relative; display: grid; gap: 14px; }
.cp-top { position: sticky; top: 64px; z-index: 20; display: grid; gap: 8px; padding: 10px 12px; border-radius: 14px; background: var(--glass); backdrop-filter: blur(6px); border: 1px solid var(--line); box-shadow: var(--shadow); }
.cp-snd { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: .84rem; }
.cp-snd select { font: 700 .86rem var(--font-body); padding: 6px 8px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--purple-ink); }
.cp-chip { padding: 5px 10px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); font-size: .78rem; color: var(--muted); }
.cp-hint { font-size: .74rem; color: var(--muted); font-style: italic; }
.cp-tabs { display: flex; gap: 14px; overflow-x: auto; padding-bottom: 2px; scrollbar-width: thin; }
.cp-tg { display: flex; align-items: center; gap: 4px; flex: none; }
.cp-tg > span { font: 700 .62rem var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent-2); margin-right: 2px; }
.cp-tg button { border: 1px solid var(--line); background: var(--surface); color: var(--ink); padding: 6px 11px; border-radius: 999px; font: 600 .8rem var(--font-body); cursor: pointer; white-space: nowrap; }
.cp-tg button[aria-pressed="true"] { background: var(--purple); color: var(--on-accent, #fff); border-color: var(--purple); }
.cp-main { display: grid; gap: 14px; min-width: 0; }
.cp-card { border: 1px solid var(--line); border-radius: 16px; background: var(--surface); padding: 12px 14px 14px; box-shadow: var(--shadow); min-width: 0; display: grid; gap: 10px; align-content: start; }
.cp-card > header { display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between; align-items: center; }
.cp-card h3 { margin: 0; font: 700 1.02rem var(--font-display); color: var(--navy); }
.cp-acts { display: flex; flex-wrap: wrap; gap: 4px; }
.cp-fig { border-radius: 10px; overflow: hidden; border: 1px solid var(--line); background: #fffdf8; min-width: 0; }
.cp-fig .cp-svg { display: block; width: 100%; height: auto; cursor: crosshair; }
.cp-grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.cp-grid-l { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: 14px; }
.cp-form { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 8px 10px; align-items: end; }
.cp-form.cp-inline { grid-template-columns: repeat(auto-fill, minmax(140px, 200px)); }
.cp-in { display: grid; gap: 3px; font-size: .74rem; color: var(--muted); }
.cp-in i { font-style: normal; opacity: .75; }
.cp-in input, .cp-in select, .cp-imp textarea, .cp-imp input[type=text], .cp-card textarea, .cp-row input { font: 500 .86rem var(--font-body); color: var(--input-ink); background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; min-width: 0; width: 100%; box-sizing: border-box; }
.cp-chk { display: inline-flex; gap: 6px; align-items: center; font-size: .8rem; color: var(--ink); }
.cp-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; } .cp-row.cp-col { flex-direction: column; align-items: stretch; } .cp-row input[type=text], .cp-row input[type=number] { width: auto; flex: 1 1 140px; }
.cp-imp { display: grid; gap: 8px; }
.cp-kpi { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; }
.cp-kpi div { padding: 9px 11px; border-radius: 12px; background: var(--bg); border: 1px solid var(--line); display: grid; gap: 2px; }
.cp-kpi b { font: 800 .95rem var(--font-mono); color: var(--purple-ink); } .cp-kpi span { font-size: .72rem; color: var(--muted); }
.cp-kpi .bad { border-color: #c4574a; background: color-mix(in srgb, #c4574a 10%, var(--bg)); } .cp-kpi .bad b { color: #a33224; }
.cp-kpi .good { border-color: #3d7a4f; background: color-mix(in srgb, #3d7a4f 10%, var(--bg)); } .cp-kpi .good b { color: #2e6b3f; }
.cp-tw { overflow-x: auto; max-width: 100%; }
.cp-tab { width: 100%; border-collapse: collapse; font-size: .78rem; }
.cp-tab th { text-align: left; padding: 6px 7px; background: var(--purple); color: var(--on-accent, #fff); font: 700 .7rem var(--font-body); white-space: nowrap; }
.cp-tab td { padding: 5px 7px; border-top: 1px solid var(--line); white-space: nowrap; font-variant-numeric: tabular-nums; }
.cp-tab.cp-edit input { width: 70px; padding: 4px 6px; font: 500 .8rem var(--font-body); border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--input-ink); }
.cp-tab.cp-edit input[type=checkbox] { width: auto; }
.cp-sw { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; border: 1px solid rgba(0,0,0,.25); }
.cp-leg { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: .74rem; color: var(--muted); }
.cp-leg i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 5px; vertical-align: -2px; border: 1px solid rgba(0,0,0,.2); }
.cp-ramp { display: flex; align-items: center; gap: 8px; font-size: .74rem; color: var(--muted); } .cp-ramp i { width: 180px; height: 10px; border-radius: 5px; display: inline-block; } .cp-ramp em { font-style: italic; }
.cp-note { margin: 0; font-size: .8rem; color: var(--muted); line-height: 1.5; }
.cp-pick { display: flex; flex-wrap: wrap; gap: 6px 14px; }
.cp-det summary { cursor: pointer; font: 700 .82rem var(--font-body); color: var(--purple-ink); }
.cp-ul { margin: 6px 0 0; padding-left: 18px; font-size: .78rem; color: var(--muted); line-height: 1.55; }
.cp-seg { flex-wrap: wrap; }
.cp-tip { position: absolute; z-index: 40; pointer-events: none; padding: 8px 10px; border-radius: 10px; background: rgba(35, 26, 20, .92); color: #fff; font: 500 .74rem/1.45 var(--font-body); box-shadow: 0 8px 22px rgba(0,0,0,.3); max-width: 220px; }
.cp-tip b { color: #f2d696; } .cp-tip i { color: #d8cfc0; }
.cp-live { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 6px; padding: 8px; background: var(--bg); border-top: 1px solid var(--line); }
.cp-live div { display: grid; font-size: .7rem; color: var(--muted); } .cp-live b { font: 700 .84rem var(--font-mono); color: var(--purple-ink); }
.cp-err { color: #a33224; font-weight: 700; }
@media (max-width: 1000px) { .cp-grid2, .cp-grid-l { grid-template-columns: minmax(0, 1fr); } .cp-top { position: static; } .cp-live { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

/* ---------------------------------------------------------------- steel & timber structure studios (struct-ui.js) */
.ss-app .cp-snd .ss-sp { flex: 1 1 auto; }
.ss-lab { display: inline-flex; gap: 6px; align-items: center; font-size: .8rem; color: var(--muted); }
.ss-lab select { font: 700 .84rem var(--font-body); padding: 6px 8px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--purple-ink); max-width: 260px; }
.ss-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 340px); gap: 14px; align-items: start; }
.ss-tools { display: flex; flex-wrap: wrap; gap: 6px; }
.ss-tool { border: 1px solid var(--line); background: var(--bg); color: var(--ink); padding: 7px 12px; border-radius: 10px; font: 600 .82rem var(--font-body); cursor: pointer; }
.ss-tool[aria-pressed="true"] { background: var(--purple); color: var(--on-accent, #fff); border-color: var(--purple); box-shadow: 0 3px 10px color-mix(in srgb, var(--purple) 35%, transparent); }
.ss-loadset { display: flex; flex-wrap: wrap; gap: 8px; align-items: end; padding: 8px 10px; border-radius: 12px; background: var(--bg); border: 1px dashed var(--line); }
.ss-loadset > b { font-size: .78rem; color: var(--purple-ink); align-self: center; }
.ss-loadset .cp-in { min-width: 110px; }
.ss-ed { position: relative; touch-action: none; }
.ss-svg { display: block; width: 100%; height: auto; cursor: crosshair; user-select: none; -webkit-user-select: none; }
.ss-zoom { position: absolute; right: 8px; top: 8px; display: grid; gap: 4px; }
.ss-zoom button { width: 30px; height: 30px; border-radius: 8px; border: 1px solid #cbbca4; background: #fffaf0; color: #3a1f33; font: 700 1rem var(--font-body); cursor: pointer; }
.ss-show { gap: 4px 12px; }
.ss-show .cp-in { flex-direction: row; display: flex; align-items: center; gap: 6px; } .ss-show .cp-in select { width: auto; }
.ss-insp { position: sticky; top: 150px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); padding: 12px 14px; box-shadow: var(--shadow); display: grid; gap: 10px; max-height: calc(100vh - 170px); overflow: auto; min-width: 0; }
.ss-ih { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; padding-bottom: 6px; border-bottom: 1px solid var(--line); }
.ss-ih b { font: 700 1rem var(--font-display); color: var(--navy); } .ss-ih span { font-size: .76rem; color: var(--muted); }
.ss-u { color: #fff !important; font: 800 .76rem var(--font-mono) !important; padding: 2px 8px; border-radius: 999px; }
.ss-f1 { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
.ss-lt select, .ss-lt input { font: 500 .78rem var(--font-body); padding: 3px 4px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--input-ink); }
.ss-lt input { width: 62px; }
.ss-on td { background: color-mix(in srgb, var(--accent-2) 18%, transparent); }
[data-msel] { cursor: pointer; } [data-msel]:hover td { background: color-mix(in srgb, var(--purple) 8%, transparent); }
.ss-bar { display: inline-block; width: 70px; height: 8px; border-radius: 4px; background: color-mix(in srgb, var(--ink) 12%, transparent); vertical-align: middle; overflow: hidden; } .ss-bar i { display: block; height: 100%; border-radius: 4px; }
.ss-cs { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: 16px; align-items: start; }
.ss-xs svg { display: block; width: 100%; height: auto; }
.ss-dl { display: grid; grid-template-columns: auto 1fr; gap: 3px 10px; font-size: .76rem; margin: 10px 0 0; } .ss-dl dt { color: var(--muted); } .ss-dl dd { margin: 0; font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }
.ss-h4 { margin: 4px 0 6px; font: 700 .86rem var(--font-display); color: var(--purple-ink); }
.ss-ck { border: 1px solid var(--line); border-radius: 12px; padding: 8px 10px; margin-bottom: 8px; background: var(--bg); }
.ss-ck header { display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: baseline; } .ss-ck header b { font-size: .84rem; color: var(--ink); } .ss-ck header span { font-size: .72rem; color: var(--muted); } .ss-ck header em { margin-left: auto; font: 800 .8rem var(--font-mono); font-style: normal; }
.ss-ck small { display: block; font-size: .72rem; color: var(--muted); margin-top: 2px; }
.ss-ck ul { margin: 4px 0 0; padding-left: 16px; font: 500 .74rem/1.55 var(--font-mono); color: var(--ink); }
.ss-boq .ss-cat td { background: color-mix(in srgb, var(--accent-2) 16%, var(--surface)); font-weight: 700; }
.ss-boq .ss-tot td { font-weight: 800; border-top: 2px solid var(--line); }
.ss-boq td:first-child { white-space: normal; min-width: 260px; }
.ss-sheet { background: #fffdf8; }
@media (max-width: 1000px) { .ss-grid, .ss-cs { grid-template-columns: minmax(0, 1fr); } .ss-insp { position: static; max-height: none; } }
.ss-app .cp-chk { white-space: nowrap; } .ss-app .cp-chk input { width: auto; flex: none; margin: 0; }
.ss-app .cp-tg.cp-seg { flex: 1 1 auto; flex-wrap: wrap; min-width: 0; } .ss-app .cp-row { min-width: 0; } .ss-app .cp-row > .cp-in { min-width: 0; max-width: 100%; }