/* ═══════════════════════════════════════════════════════════════════
   dronecleaning.com.sg — "Industry"
   Implemented from design project 59afe9e1 (Drone Cleaning SG.dc.html)
   against the Industry design system:
     _ds/industry-fc350818-784e-4004-86e0-6ddf39b31f34/styles.css

   Industry is a wireframe system: steel-blue on a light technical
   ground, Barlow Condensed over Barlow, a visible modular grid, and
   cards / figures / primary buttons framed as blueprint objects —
   square-cornered, hairline-bordered, with "+" registration marks.

   The site's existing class names are preserved exactly (.answer and
   .takeaway are named in the speakable schema; every page's markup is
   untouched), so registration marks are drawn with pseudo-elements
   rather than the system's four <i class="corner"> children.
   ═══════════════════════════════════════════════════════════════════ */


/* ── Tokens — Industry, verbatim ──────────────────────────────────── */
:root{
  --color-bg:#f2f2f3;
  --color-surface:#e9e9ea;
  --color-text:#1d1f20;
  --color-accent:#5980a6;
  --color-divider:color-mix(in srgb,#1d1f20 16%,transparent);

  --color-neutral-100:#f5f5f8; --color-neutral-200:#e7e7ea; --color-neutral-300:#d4d4d7;
  --color-neutral-400:#b7b7ba; --color-neutral-500:#98989b; --color-neutral-600:#7a7a7d;
  --color-neutral-700:#5d5d60; --color-neutral-800:#424244; --color-neutral-900:#2b2b2d;

  --color-accent-100:#eef6ff; --color-accent-200:#d6ebff; --color-accent-300:#b5d9fd;
  --color-accent-400:#94bce3; --color-accent-500:#749dc4; --color-accent-600:#597ea3;
  --color-accent-700:#416180; --color-accent-800:#2c455d; --color-accent-900:#1d2d3d;

  --font-heading:"Barlow Condensed",system-ui,sans-serif;
  --font-heading-weight:600;
  --font-body:"Barlow",system-ui,sans-serif;

  --space-1:3.4px; --space-2:6.8px; --space-3:10.2px;
  --space-4:13.6px; --space-6:20.4px; --space-8:27.2px;

  --radius-sm:2px; --radius-md:4px; --radius-lg:7px;

  --shadow-sm:0 1px 2px color-mix(in srgb,#2b2b2d 14%,transparent);
  --shadow-md:0 3px 10px color-mix(in srgb,#2b2b2d 16%,transparent);
  --shadow-lg:0 12px 32px color-mix(in srgb,#2b2b2d 22%,transparent);

  /* site-local roles, all derived from the system tokens */
  --mark:color-mix(in srgb,var(--color-text) 55%,transparent);
  --measure:70ch;
  --ink-soft:color-mix(in srgb,var(--color-text) 78%,transparent);
  --ink-mute:color-mix(in srgb,var(--color-text) 58%,transparent);
}

/* Dark ground. Industry is a light system; the readme anticipates dark
   grounds by moving the accent up its ramp (accent-400), so the steel
   character and the blueprint frame survive the inversion. */
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --color-bg:#16191c;
    --color-surface:#1d2126;
    --color-text:#eceded;
    --color-accent:#94bce3;
    --color-divider:color-mix(in srgb,#eceded 18%,transparent);
    --color-accent-700:#b5d9fd;
    --color-accent-900:#0f1317;
    --mark:color-mix(in srgb,#eceded 55%,transparent);
    --ink-soft:color-mix(in srgb,#eceded 80%,transparent);
    --ink-mute:color-mix(in srgb,#eceded 60%,transparent);
  }
}
:root[data-theme="dark"]{
  --color-bg:#16191c;
  --color-surface:#1d2126;
  --color-text:#eceded;
  --color-accent:#94bce3;
  --color-divider:color-mix(in srgb,#eceded 18%,transparent);
  --color-accent-700:#b5d9fd;
  --color-accent-900:#0f1317;
  --mark:color-mix(in srgb,#eceded 55%,transparent);
  --ink-soft:color-mix(in srgb,#eceded 80%,transparent);
  --ink-mute:color-mix(in srgb,#eceded 60%,transparent);
}

*,*::before,*::after{box-sizing:border-box}

/* The visible modular grid — Industry's "keep the grid visible" rule. */
body{
  margin:0;
  background:var(--color-bg);
  background-image:
    linear-gradient(var(--color-divider) 1px,transparent 1px),
    linear-gradient(90deg,var(--color-divider) 1px,transparent 1px);
  background-size:96px 96px;
  background-position:center top;
  color:var(--color-text);
  font-family:var(--font-body);
  font-size:16px;line-height:1.55;font-weight:400;
  -webkit-font-smoothing:antialiased;
}

.wrap{max-width:none;margin:0;padding:0 clamp(22px,3.6vw,64px)}
.skip{position:absolute;left:-9999px;top:0;background:var(--color-text);color:var(--color-bg);padding:12px 18px;z-index:200}
.skip:focus{left:0}

/* ── Type — Barlow Condensed over Barlow ──────────────────────────── */
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-heading);font-weight:var(--font-heading-weight);
  line-height:1.12;letter-spacing:-.015em;margin:0 0 var(--space-2);
  color:var(--color-text);text-wrap:balance;
}
h1{font-size:clamp(40px,5.4vw,70px);line-height:.98;letter-spacing:-.02em;margin-bottom:var(--space-4)}
h2{font-size:clamp(28px,3.4vw,40px);margin-top:1.7em}
h3{font-size:22px;margin-top:1.6em}
h4{font-size:19px;margin-top:1.4em}
p{margin:0 0 var(--space-3);max-width:var(--measure)}
a{color:var(--color-accent-700);text-decoration:none;text-underline-offset:3px}
a:hover{color:var(--color-accent);text-decoration:underline}
strong{font-weight:600}
img{display:block;max-width:100%}
figure{margin:0}
.muted,.text-muted{color:var(--ink-mute);font-size:.94em}
:focus{outline:none}
:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}
::selection{background:color-mix(in srgb,var(--color-accent) 30%,transparent)}

/* ── Registration marks — the blueprint frame, drawn without DOM ──── */
.blueprint-marks{position:relative}
.blueprint-marks::before,.blueprint-marks::after{
  content:"";position:absolute;left:-6px;right:-6px;height:11px;pointer-events:none;
  background-image:
    linear-gradient(var(--mark),var(--mark)),linear-gradient(var(--mark),var(--mark)),
    linear-gradient(var(--mark),var(--mark)),linear-gradient(var(--mark),var(--mark));
  background-size:1px 11px,11px 1px,1px 11px,11px 1px;
  background-position:5px 0,0 5px,right 5px top 0,right 0 top 5px;
  background-repeat:no-repeat;
}
.blueprint-marks::before{top:-6px}
.blueprint-marks::after{bottom:-6px}

/* ── Header ───────────────────────────────────────────────────────── */
.site-header{
  position:sticky;top:0;z-index:20;
  background:var(--color-bg);border-bottom:1px solid var(--color-divider);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:14px 0;height:auto;min-height:64px}
.brand{display:flex;align-items:baseline;gap:10px;text-decoration:none;margin-right:auto;color:var(--color-text)}
.brand:hover{text-decoration:none}
.brand-mark{
  width:10px;height:22px;flex:none;border-radius:0;align-self:center;
  background:var(--color-accent);
}
.brand-text strong{
  display:block;font-family:var(--font-heading);font-weight:600;
  font-size:20px;letter-spacing:.02em;line-height:1;text-transform:uppercase;
}
.brand-text em{
  font-style:normal;font-family:var(--font-body);font-size:11px;
  letter-spacing:.18em;text-transform:uppercase;color:var(--color-accent-700);
}
.nav{display:flex;align-items:center;gap:24px}
.nav a{
  font-family:var(--font-heading);font-weight:500;font-size:13px;
  letter-spacing:.04em;text-transform:uppercase;color:var(--color-text);
}
.nav a:hover{color:var(--color-accent);text-decoration:none}
.nav-cta{
  background:var(--color-accent);color:var(--color-bg)!important;
  border:1px solid var(--color-accent);border-radius:0;
  font-family:var(--font-heading);font-weight:600;font-size:13px;
  letter-spacing:.03em;padding:9px 16px;text-transform:none;
}
.nav-cta:hover{background:var(--color-accent-600);text-decoration:none}
.nav-toggle,.nav-burger{display:none}

/* ── Breadcrumbs ──────────────────────────────────────────────────── */
.breadcrumbs{border-bottom:1px solid var(--color-divider);font-size:11px;letter-spacing:.1em;text-transform:uppercase;font-family:var(--font-heading);font-weight:500}
.breadcrumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:9px;margin:0;padding:12px 0}
.breadcrumbs li+li::before{content:"\203A";margin-right:9px;color:var(--ink-mute)}
.breadcrumbs a{color:var(--ink-mute)}
.breadcrumbs span{color:var(--color-text)}

/* ── Hero ─────────────────────────────────────────────────────────── */
.hero{padding:72px 0 8px;border-bottom:1px solid var(--color-divider)}
.eyebrow{
  display:flex;align-items:center;gap:12px;
  font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--color-accent-700);margin:0 0 26px;font-weight:500;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--color-accent);flex:none}
.hero h1{max-width:18ch}
.hero-sub{font-size:18px;line-height:1.5;max-width:52ch;margin:0 0 30px;color:var(--ink-soft)}
.hero-sub strong{color:var(--color-text)}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;padding-bottom:48px}

/* ── Buttons — primary is the one solid object on the board ───────── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  cursor:pointer;text-decoration:none;
  font-family:var(--font-heading);font-weight:var(--font-heading-weight);
  font-size:15px;line-height:1.2;color:var(--color-text);
  background:transparent;border:1px solid var(--color-divider);border-radius:0;
  padding:14px 24px;
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--color-accent);color:var(--color-bg)!important;border-color:var(--color-accent);position:relative}
.btn-primary:hover{background:var(--color-accent-600);border-color:var(--color-accent-600)}
.btn-primary:active{background:var(--color-accent-700)}
.btn-secondary,.btn-ghost{border-color:var(--color-divider);color:var(--color-text)!important}
.btn-secondary:hover,.btn-ghost:hover{background:color-mix(in srgb,var(--color-text) 7%,transparent)}
.btn-dark{background:var(--color-accent-900);color:var(--color-bg)!important;border-color:var(--color-accent-900)}

/* ── Sections ─────────────────────────────────────────────────────── */
section{padding:40px 0}
.section-alt{background:var(--color-surface);border-block:1px solid var(--color-divider);padding:64px 0;margin-top:56px}
.section-alt h2:first-child{margin-top:0}
/* .prose no longer caps the whole column — running text keeps its measure,
   but tables, grids and figures inside it run the full width of the page. */
.prose{max-width:none}
.prose > p,.prose > ul,.prose > ol{max-width:var(--measure)}
.prose > h2{max-width:30ch}
.prose > h3,.prose > h4{max-width:44ch}
.prose ul,.prose ol{padding-left:1.2em;margin:0 0 var(--space-4)}
.prose li{margin-bottom:.42em}
.lede{font-size:17px;max-width:62ch}

/* ── Spec strip — hard facts, rule-separated cells ────────────────── */
.stat-row{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:0;
  border-top:1px solid var(--color-divider);border-bottom:1px solid var(--color-divider);
  margin:44px 0 8px;
}
.stat{padding:24px 24px 24px 0;border-left:1px solid var(--color-divider)}
.stat:first-child{border-left:none}
.stat:not(:first-child){padding-left:24px}
.stat b{
  display:block;font-family:var(--font-heading);font-weight:600;
  font-size:30px;line-height:1;color:var(--color-text);
}
.stat span{
  display:block;font-size:12px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--ink-mute);margin-top:6px;line-height:1.4;
}

/* ── Cards — transparent line drawings with registration marks ────── */
.grid{display:grid;gap:28px}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(340px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(270px,1fr))}
.card{
  position:relative;display:flex;flex-direction:column;gap:10px;
  padding:22px;border:1px solid var(--color-divider);border-radius:0;
  background:transparent;box-shadow:none;
}
.card::before,.card::after{
  content:"";position:absolute;left:-6px;right:-6px;height:11px;pointer-events:none;
  background-image:
    linear-gradient(var(--mark),var(--mark)),linear-gradient(var(--mark),var(--mark)),
    linear-gradient(var(--mark),var(--mark)),linear-gradient(var(--mark),var(--mark));
  background-size:1px 11px,11px 1px,1px 11px,11px 1px;
  background-position:5px 0,0 5px,right 5px top 0,right 0 top 5px;
  background-repeat:no-repeat;
}
.card::before{top:-6px}
.card::after{bottom:-6px}
.card h3{margin:0;font-size:21px;font-family:var(--font-heading)}
.card h3 a{color:var(--color-text)}
.card h3 a:hover{color:var(--color-accent)}
.card p{margin:0;font-size:13.5px;color:var(--ink-soft)}
.card p.muted strong{
  display:block;font-family:var(--font-heading);font-weight:600;font-size:16px;
  color:var(--color-text);border-top:1px solid var(--color-divider);padding-top:10px;margin-top:2px;
}
.card-link{
  display:inline-block;margin-top:auto;padding-top:8px;
  font-family:var(--font-heading);font-weight:600;font-size:13px;
  letter-spacing:.04em;text-transform:uppercase;color:var(--color-accent-700);
}

/* ── Direct-answer box — the snippet / AI-answer target ───────────── */
.answer{
  position:relative;border:1px solid var(--color-divider);
  border-left:3px solid var(--color-accent);border-radius:0;
  background:transparent;padding:24px 26px;margin:34px 0;max-width:var(--measure);
  font-size:17px;line-height:1.5;color:var(--ink-soft);
}
.answer p:last-child{margin-bottom:0}
.answer strong{color:var(--color-text);font-weight:600}

/* ── Key takeaways ────────────────────────────────────────────────── */
.takeaway{
  border:1px solid var(--color-divider);border-radius:0;background:transparent;
  padding:22px 26px;margin:32px 0;max-width:var(--measure);
}
.takeaway-head,.takeaway h2{
  margin:0 0 12px;font-family:var(--font-heading);font-weight:600;
  font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--color-accent-700);
}
.takeaway ul{margin:0;padding-left:1.1em}
.takeaway li{margin-bottom:8px;font-size:14.5px}
.takeaway li:last-child{margin-bottom:0}

/* ── Table of contents ────────────────────────────────────────────── */
.toc{border:none;border-left:1px solid var(--color-divider);border-radius:0;background:transparent;padding:2px 0 2px 22px;margin:32px 0}
.toc p{margin:0 0 10px;font-family:var(--font-heading);font-weight:600;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-mute)}
.toc ol{margin:0;padding-left:1.1em}
.toc li{margin-bottom:6px;font-size:14px}

/* ── Notes / limitations ──────────────────────────────────────────── */
.note,.call{
  border:1px solid var(--color-divider);border-left:3px solid var(--color-accent-400);
  border-radius:0;background:transparent;padding:18px 22px;margin:26px 0;
  max-width:var(--measure);font-size:14.5px;
}
.note p:last-child,.call p:last-child{margin-bottom:0}
.call.mem{border-left-color:var(--color-accent)}
.call.reg{border-left-color:var(--color-accent-700)}
.call-label{
  display:block;font-family:var(--font-heading);font-weight:600;font-size:12px;
  letter-spacing:.08em;text-transform:uppercase;color:var(--color-accent-700);margin-bottom:6px;
}

/* ── Tables ───────────────────────────────────────────────────────── */
.table-scroll{overflow-x:auto;margin:26px 0 30px;position:relative;border:1px solid var(--color-divider);padding:26px}
.table-scroll::before,.table-scroll::after{
  content:"";position:absolute;left:-6px;right:-6px;height:11px;pointer-events:none;
  background-image:
    linear-gradient(var(--mark),var(--mark)),linear-gradient(var(--mark),var(--mark)),
    linear-gradient(var(--mark),var(--mark)),linear-gradient(var(--mark),var(--mark));
  background-size:1px 11px,11px 1px,1px 11px,11px 1px;
  background-position:5px 0,0 5px,right 5px top 0,right 0 top 5px;
  background-repeat:no-repeat;
}
.table-scroll::before{top:-6px}
.table-scroll::after{bottom:-6px}
table{width:100%;border-collapse:collapse;font-size:14px;font-family:var(--font-body)}
thead th{
  text-align:left;font-size:11px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--ink-mute);font-weight:500;font-family:var(--font-body);
  padding:var(--space-2) var(--space-4) var(--space-2) 0;
  border-bottom:1px solid var(--color-divider);white-space:nowrap;
}
td{padding:var(--space-3) var(--space-4) var(--space-3) 0;border-bottom:1px solid color-mix(in srgb,var(--color-text) 8%,transparent);vertical-align:top}
tbody tr:hover{background:color-mix(in srgb,var(--color-text) 4%,transparent)}
tbody th{
  text-align:left;padding:var(--space-3) var(--space-4) var(--space-3) 0;
  border-bottom:1px solid color-mix(in srgb,var(--color-text) 8%,transparent);
  font-family:var(--font-heading);font-weight:600;font-size:14px;
  text-transform:none;letter-spacing:0;color:var(--color-text);
}
td strong{color:var(--color-text)}
td.win{background:var(--color-accent-100);color:var(--color-accent-800);font-weight:600}

/* ── FAQ ──────────────────────────────────────────────────────────── */
.faq{border-top:1px solid var(--color-divider);padding-top:20px;margin-top:20px;max-width:var(--measure)}
.faq h3{margin:0 0 6px;font-size:19px}
.faq p{font-size:14.5px;color:var(--ink-soft)}

/* ── Sources ──────────────────────────────────────────────────────── */
.sources{font-size:13px;color:var(--ink-mute);border-top:1px solid var(--color-divider);margin-top:48px;padding-top:20px;max-width:var(--measure)}
.sources p{font-family:var(--font-heading);font-weight:600;font-size:12px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:10px}
.sources ol{padding-left:1.3em;margin:0}
.sources li{margin-bottom:6px}

/* ── CTA band — the accent-900 field, type reversed to paper ──────── */
.cta-band{
  background:var(--color-accent-900);color:var(--color-bg);
  padding:64px clamp(22px,3.6vw,64px);margin:56px 0 0;text-align:left;
}
.cta-band h2{color:var(--color-bg);margin:0 0 14px;font-size:clamp(30px,3.8vw,46px);line-height:1.02;max-width:22ch}
.cta-band p{font-size:16px;margin:0;color:color-mix(in srgb,#f2f2f3 78%,transparent);max-width:48ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.cta-band .btn-primary{background:var(--color-bg);color:var(--color-accent-900)!important;border-color:var(--color-bg)}
.cta-band .btn-primary:hover{background:#fff;border-color:#fff}
.cta-band .btn-ghost,.cta-band .btn-secondary{color:var(--color-bg)!important;border-color:color-mix(in srgb,#f2f2f3 45%,transparent);background:transparent}
.cta-band .btn-ghost:hover,.cta-band .btn-secondary:hover{border-color:var(--color-bg);background:transparent}

/* ── Footer ───────────────────────────────────────────────────────── */
.site-footer{border-top:1px solid var(--color-divider);padding:44px 0 0;font-size:13.5px;color:var(--ink-soft);margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px}
.footer-brand{font-family:var(--font-heading);font-weight:600;font-size:19px;letter-spacing:.02em;text-transform:uppercase;color:var(--color-text);margin-bottom:10px}
.footer-head{font-family:var(--font-body);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-mute);margin-bottom:10px;font-weight:500}
.site-footer ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.site-footer li{font-size:13.5px}
.site-footer a{color:var(--color-text);text-decoration:none}
.site-footer a:hover{color:var(--color-accent)}
.site-footer .muted{color:var(--ink-mute)}
.footer-legal{border-top:1px solid var(--color-divider);padding:18px 0}
.footer-legal p{font-size:12px;color:var(--ink-mute);max-width:none;margin:0}

@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width:1000px){.footer-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:860px){
  body{font-size:15.5px;background-size:64px 64px}
  .hero{padding:48px 0 4px}
  .nav{
    position:fixed;inset:64px 0 auto;background:var(--color-bg);flex-direction:column;
    align-items:stretch;gap:0;padding:8px 22px 20px;border-bottom:1px solid var(--color-divider);
    display:none;max-height:calc(100vh - 64px);overflow-y:auto;
  }
  .nav a{padding:14px 0;border-bottom:1px solid var(--color-divider)}
  .nav-cta{margin-top:14px;text-align:center;border-bottom:none!important;justify-content:center}
  .nav-toggle:checked ~ .nav{display:flex}
  .nav-burger{display:flex;flex-direction:column;justify-content:center;gap:5px;width:28px;height:28px;cursor:pointer}
  .nav-burger span{display:block;height:1.5px;background:var(--color-text)}
  .stat{padding:18px 14px;border-left:1px solid var(--color-divider)}
  .stat:first-child{padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{padding:44px 22px;margin-top:44px}
  .table-scroll{padding:18px}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
  .grid-2,.grid-3{grid-template-columns:1fr}
}