/* ============================================================
   KERNEL — kernelworks.ai
   Fresh build on the KERNEL Design System.
   Flat. Hairlines. Near-square. One signal per view.
   ============================================================ */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 76px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--d-bg);
  color: var(--d-fg);
  font-family: var(--font-sans);
  font-size: var(--t-body);
  line-height: var(--lh-body);
  letter-spacing: var(--tr-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
figure { margin: 0; }
img, svg { display: block; }
::selection { background: var(--signal); color: var(--ink-950); }

.wrap { max-width: 1280px; margin: 0 auto; padding: 0 40px; }
@media (max-width: 720px) { .wrap { padding: 0 22px; } }

:focus-visible { outline: var(--bw-bold) solid var(--signal); outline-offset: 3px; }

/* ============================================================
   THERMAL FIELD STAGE (from handoff kit)
   ============================================================ */
.tf-stage { position: relative; overflow: hidden; --tf-veil: 1; }
.tf-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.tf-veil { position: absolute; inset: 0; pointer-events: none; }
.tf-dark .tf-veil { background: radial-gradient(58% 62% at 50% 50%,
  rgba(8,8,10,calc(.62*var(--tf-veil))) 16%,
  rgba(8,8,10,calc(.34*var(--tf-veil))) 50%,
  rgba(8,8,10,0) 80%); }
.tf-dark.tf-vignette .tf-veil { background: radial-gradient(120% 120% at 50% 50%,
  rgba(8,8,10,0) 52%, rgba(8,8,10,calc(.7*var(--tf-veil))) 100%); }
.tf-content { position: relative; z-index: 2; width: 100%; }
.tf-dark .tf-text { text-shadow: 0 2px 38px rgba(8,8,10,.92), 0 1px 10px rgba(8,8,10,.85); }

/* Reticle cursor over interactive fields (fine pointers only) */
@media (pointer: fine) {
  .tf-reticle { cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Cg fill='none' stroke='%23FF5C2C' stroke-width='2.5'%3E%3Cpath d='M4 12V4H12'/%3E%3Cpath d='M28 4H36V12'/%3E%3Cpath d='M36 28V36H28'/%3E%3Cpath d='M12 36H4V28'/%3E%3C/g%3E%3Crect x='17' y='17' width='6' height='6' fill='%23FF5C2C'/%3E%3C/svg%3E") 20 20, crosshair; }
}

/* ============================================================
   REVEAL — restrained, mechanical
   ============================================================ */
.rv { opacity: 0; transform: translateY(14px); transition: opacity .55s var(--ease), transform .55s var(--ease); }
.rv.in { opacity: 1; transform: none; }
.rv2 { transition-delay: .08s; } .rv3 { transition-delay: .16s; } .rv4 { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) {
  .rv { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   EYEBROW — mono kicker with kernel tick
   ============================================================ */
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--d-fg-2); }
.eyebrow::before { content: ""; width: 8px; height: 8px; background: currentColor; flex: none; }
.eyebrow.sig::before { background: var(--signal); }
.light .eyebrow { color: var(--l-fg-2); }

/* ============================================================
   BUTTONS — flat, mono label, arrow glyph
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-mono); font-weight: 500; font-size: 13px;
  letter-spacing: .06em; text-transform: uppercase;
  padding: 15px 22px; border-radius: var(--r-xs);
  border: var(--bw-hair) solid transparent;
  cursor: pointer; transition: background .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease), transform .1s var(--ease);
  -webkit-tap-highlight-color: transparent;
}
.btn .ar { font-family: var(--font-mono); transition: transform .18s var(--ease); }
.btn:hover .ar { transform: translateX(4px); }
.btn:active { transform: translateY(1px); }

.btn-signal { background: var(--signal); color: var(--ink-950); }
.btn-signal:hover { background: var(--signal-hi); }
.btn-signal:active { background: var(--signal-low); }

.btn-ghost { border-color: var(--d-hairline-strong); color: var(--d-fg); background: transparent; }
.btn-ghost:hover { border-color: var(--d-fg); }
.light .btn-ghost { border-color: var(--l-hairline-strong); color: var(--l-fg); }
.light .btn-ghost:hover { border-color: var(--l-fg); }

.btn-solid { background: var(--d-fg); color: var(--ink-950); }
.btn-solid:hover { background: #fff; }
.light .btn-solid { background: var(--ink-950); color: var(--paper-50); }
.light .btn-solid:hover { background: var(--ink-800); }

/* ============================================================
   NAV — thin top bar, hairline underline
   ============================================================ */
#nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 90;
  background: transparent; border-bottom: var(--bw-hair) solid transparent;
  transition: background .25s var(--ease), border-color .25s var(--ease);
}
#nav.scrolled { background: rgba(8,8,10,.9); backdrop-filter: blur(8px); border-bottom-color: var(--d-hairline); }
#nav .bar { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand .mk { width: 20px; height: 20px; color: var(--d-fg); align-self: center; }
.brand .word { font-family: var(--font-display); font-weight: 700; font-size: 17px; letter-spacing: .07em; color: var(--d-fg); }
.brand .by { font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em; color: var(--ink-400); text-transform: uppercase; }
#nav .links { display: flex; gap: 26px; }
#nav .links a {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--d-fg-2); padding: 6px 0; position: relative;
}
#nav .links a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px; background: var(--signal); transition: right .2s var(--ease); }
#nav .links a:hover { color: var(--d-fg); }
#nav .links a:hover::after { right: 0; }
#nav .cta { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-950); background: var(--d-fg); padding: 10px 16px; border-radius: var(--r-xs); transition: background .18s; }
#nav .cta:hover { background: #fff; }

#burger { display: none; width: 40px; height: 40px; background: none; border: 0; cursor: pointer; position: relative; padding: 0; }
#burger span { position: absolute; left: 8px; right: 8px; height: 2px; background: var(--d-fg); transition: transform .3s var(--ease), top .3s var(--ease), opacity .2s; }
#burger span:nth-child(1) { top: 14px; } #burger span:nth-child(2) { top: 24px; }
#burger.x span:nth-child(1) { top: 19px; transform: rotate(45deg); }
#burger.x span:nth-child(2) { top: 19px; transform: rotate(-45deg); }

#menu { position: fixed; inset: 0; z-index: 80; background: var(--ink-950); display: flex; align-items: center;
  clip-path: inset(0 0 100% 0); visibility: hidden; transition: clip-path .5s var(--ease), visibility 0s .5s; }
#menu.open { clip-path: inset(0 0 0% 0); visibility: visible; transition: clip-path .5s var(--ease); }
#menu nav { display: flex; flex-direction: column; gap: 4px; }
#menu nav a { font-family: var(--font-display); font-weight: 600; font-size: clamp(30px, 8vw, 52px); letter-spacing: var(--tr-heading); color: var(--d-fg-2); padding: 8px 0; }
#menu nav a:hover, #menu nav a:active { color: var(--d-fg); }
#menu .meta { margin-top: 40px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; color: var(--d-fg-3); line-height: 2.1; text-transform: uppercase; }

@media (max-width: 920px) {
  #nav .links, #nav .cta { display: none; }
  #burger { display: block; }
}

/* ============================================================
   HERO
   ============================================================ */
#hero { min-height: 100svh; display: flex; flex-direction: column; justify-content: flex-end; }
#hero .tf-veil { background:
  linear-gradient(180deg, rgba(8,8,10,.38) 0%, rgba(8,8,10,.12) 34%, rgba(8,8,10,.62) 76%, rgba(8,8,10,.86) 100%),
  radial-gradient(58% 62% at 42% 58%, rgba(8,8,10,.5) 20%, rgba(8,8,10,.22) 55%, rgba(8,8,10,0) 82%); }
#hero .tf-content { display: flex; flex-direction: column; justify-content: flex-end; min-height: 100svh; padding-top: 120px; }
#hero h1 { margin: 26px 0 0; max-width: 11ch; }
#hero .sub { max-width: 58ch; margin: 28px 0 0; font-size: var(--t-body-lg); color: var(--ink-300); text-shadow: 0 1px 16px rgba(8,8,10,.9); }
#hero .sub strong { color: var(--d-fg); font-weight: 500; }
#hero .ctas { display: flex; gap: 14px; margin: 40px 0 0; flex-wrap: wrap; }

/* mono status strip along the hero base */
.statusstrip { margin-top: 72px; border-top: var(--bw-hair) solid var(--d-hairline); display: grid; grid-template-columns: repeat(4, 1fr); }
.statusstrip .cell { padding: 18px 22px 26px 0; border-left: var(--bw-hair) solid var(--d-hairline); padding-left: 22px; }
.statusstrip .cell:first-child { border-left: 0; padding-left: 0; }
.statusstrip .k { font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--d-fg-3); }
.statusstrip .v { margin-top: 8px; font-family: var(--font-mono); font-size: 14px; color: var(--d-fg); display: flex; align-items: center; gap: 8px; }
.dot { width: 7px; height: 7px; border-radius: var(--r-pill); background: var(--d-fg-3); flex: none; }
.dot.live { background: var(--verified); }
.dot.build { background: var(--watch); }
@media (max-width: 920px) { .statusstrip { grid-template-columns: 1fr 1fr; } .statusstrip .cell:nth-child(3) { border-left: 0; padding-left: 0; } }
@media (max-width: 520px) { .statusstrip { grid-template-columns: 1fr 1fr; } }

/* ============================================================
   SECTION SCAFFOLD
   ============================================================ */
section .head { max-width: 720px; }
section .head h2 { margin: 22px 0 0; }
section .head .lead { margin: 20px 0 0; color: var(--d-fg-2); font-size: var(--t-body-lg); }
.light section .head .lead, section.light .head .lead { color: var(--l-fg-2); }

.dark { background: var(--d-bg); color: var(--d-fg); }
.light { background: var(--l-bg); color: var(--l-fg); }

/* ============================================================
   DRIFT — problem statement band (light)
   ============================================================ */
#drift { padding: 140px 0 130px; }
#drift .grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 72px; align-items: start; }
#drift h2 { margin: 22px 0 0; }
#drift .fill-tx { font-family: var(--font-display); font-weight: 600; font-size: clamp(28px, 3.2vw, 44px); line-height: 1.14; letter-spacing: var(--tr-heading); margin: 22px 0 0; max-width: 20em; }
#drift .fill-tx .w { color: rgba(8,8,10,.22); transition: color .16s linear; }
#drift .fill-tx .w.on { color: var(--l-fg); }
#drift aside { border-left: var(--bw-hair) solid var(--l-hairline); padding-left: 34px; display: flex; flex-direction: column; gap: 28px; }
#drift aside .m { font-family: var(--font-mono); font-size: 13px; line-height: 1.8; color: var(--l-fg-2); }
#drift aside .m b { color: var(--l-fg); font-weight: 600; }
#drift aside .m .sig { color: var(--signal-low); }
@media (max-width: 920px) { #drift .grid { grid-template-columns: 1fr; gap: 44px; } #drift aside { border-left: 0; padding-left: 0; border-top: var(--bw-hair) solid var(--l-hairline); padding-top: 30px; } }

/* ============================================================
   PLATFORM — four layers (light, hairline grid)
   ============================================================ */
#platform { padding: 0 0 140px; }
#platform .lgrid { margin-top: 84px; display: grid; grid-template-columns: repeat(4, 1fr); border-top: var(--bw-hair) solid var(--l-hairline); }
.lcell { border-left: var(--bw-hair) solid var(--l-hairline); padding: 30px 26px 44px; position: relative; }
.lcell:first-child { border-left: 0; padding-left: 0; }
.lcell .no { font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em; color: var(--l-fg-3); }
.lcell .ic { margin: 44px 0 0; width: 44px; height: 44px; color: var(--l-fg); }
.lcell .ic svg { width: 100%; height: 100%; }
.lcell h3 { margin: 26px 0 0; font-family: var(--font-display); font-weight: 600; font-size: 19px; letter-spacing: var(--tr-heading); }
.lcell p { margin: 12px 0 0; font-size: 14.5px; line-height: 1.65; color: var(--l-fg-2); }
.lcell .tag { margin-top: 18px; display: inline-block; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--l-fg-3); background: var(--l-chip-bg); padding: 5px 9px; border-radius: var(--r-xs); }
@media (max-width: 980px) {
  #platform .lgrid { grid-template-columns: 1fr 1fr; }
  .lcell:nth-child(odd) { border-left: 0; padding-left: 0; }
  .lcell:nth-child(even) { padding-right: 0; }
}
@media (max-width: 560px) { #platform .lgrid { grid-template-columns: 1fr; } .lcell { border-left: 0; padding-left: 0; padding-right: 0; border-top: var(--bw-hair) solid var(--l-hairline); } .lcell:first-child { border-top: 0; } .lcell .ic { margin-top: 24px; } }

/* ============================================================
   EVIDENCE — the record (dark, faint site-scene field)
   ============================================================ */
#evidence { padding: 150px 0 150px; }
#evidence .grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 64px; align-items: center; margin-top: 72px; }

.frame { position: relative; border: var(--bw-hair) solid var(--d-hairline-strong); background: var(--ink-900); }
.frame svg.yard { width: 100%; height: auto; display: block; }
.frame .gridov { position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 28px 28px; }
.frame .meta { position: absolute; font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; color: var(--ink-300); background: rgba(8,8,10,.55); padding: 4px 8px; }
.frame .meta.tl { top: 10px; left: 10px; } .frame .meta.tr { top: 10px; right: 10px; }
.frame .meta.bl { bottom: 10px; left: 10px; } .frame .meta.br { bottom: 10px; right: 10px; color: var(--ink-500); }
.frame .scan { position: absolute; left: 0; right: 0; top: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(255,92,44,.8), transparent); opacity: 0; }
.frame.on .scan { animation: scansweep 1.1s var(--ease) .15s 1 forwards; }
@keyframes scansweep { 0% { opacity: 0; top: 0; } 12% { opacity: 1; } 88% { opacity: 1; } 100% { opacity: 0; top: 100%; } }

/* signal bounding box locks on */
.bbox { opacity: 0; transform-origin: center; }
.frame.on .bbox { animation: lockon .45s var(--ease) .9s 1 forwards; }
@keyframes lockon { 0% { opacity: 0; transform: scale(1.06); } 100% { opacity: 1; transform: scale(1); } }
@media (prefers-reduced-motion: reduce) {
  .frame .scan { display: none; }
  .bbox, .frame.on .bbox { opacity: 1; animation: none; transform: none; }
}

.record { border-top: var(--bw-hair) solid var(--d-hairline); }
.record .row { display: grid; grid-template-columns: 130px 1fr; gap: 20px; padding: 15px 0; border-bottom: var(--bw-hair) solid var(--d-hairline); }
.record .k { font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--d-fg-3); padding-top: 3px; }
.record .v { font-family: var(--font-mono); font-size: 14px; color: var(--d-fg); }
.record .v .conf { color: var(--signal); }
#evidence .note { margin-top: 30px; color: var(--d-fg-2); font-size: 15px; line-height: 1.65; max-width: 44ch; }
@media (max-width: 980px) { #evidence .grid { grid-template-columns: 1fr; gap: 44px; } }

/* ============================================================
   STATS — field proof (light)
   ============================================================ */
#proof { padding: 140px 0 150px; }
#proof .numgrid { margin-top: 90px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: var(--bw-hair) solid var(--l-hairline); }
.num { padding: 36px 30px 10px; border-left: var(--bw-hair) solid var(--l-hairline); position: relative; }
.num:first-child { border-left: 0; padding-left: 0; }
.num .v { font-family: var(--font-display); font-weight: 700; letter-spacing: var(--tr-display); line-height: .95; font-size: clamp(56px, 6vw, 92px); font-feature-settings: "tnum" 1; }
.num .v small { font-size: .45em; font-weight: 600; margin-left: 2px; }
.num .c { margin-top: 20px; font-family: var(--font-mono); font-size: 12px; line-height: 1.8; letter-spacing: .04em; text-transform: uppercase; color: var(--l-fg-2); max-width: 30ch; }
.num .c b { color: var(--l-fg); font-weight: 500; }
#proof .foot { margin-top: 70px; padding-top: 24px; border-top: var(--bw-hair) solid var(--l-hairline); display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--l-fg-3); }
@media (max-width: 860px) { #proof .numgrid { grid-template-columns: 1fr; } .num { border-left: 0; padding: 34px 0 20px; border-top: var(--bw-hair) solid var(--l-hairline); } .num:first-child { border-top: 0; padding-top: 30px; } }

/* ============================================================
   DEPLOYMENTS — hairline rows, hover invert (light)
   ============================================================ */
#deployments { padding: 0 0 150px; }
#deployments .rows { margin-top: 76px; }
.drow { display: grid; grid-template-columns: 190px 150px 1fr 190px; gap: 30px; align-items: start;
  padding: 38px 14px; border-top: var(--bw-hair) solid var(--l-hairline); transition: background .25s var(--ease), color .25s var(--ease); }
.drow:last-child { border-bottom: var(--bw-hair) solid var(--l-hairline); }
.drow .code { font-family: var(--font-mono); font-size: 13px; letter-spacing: .06em; }
.drow .code .yr { display: block; margin-top: 6px; color: var(--l-fg-3); font-size: 11px; }
.drow .st { font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--l-fg-2); display: flex; align-items: center; gap: 8px; padding-top: 2px; }
.drow h3 { margin: 0; font-family: var(--font-display); font-weight: 600; font-size: 22px; letter-spacing: var(--tr-heading); }
.drow p { margin: 10px 0 0; font-size: 14.5px; line-height: 1.65; color: var(--l-fg-2); max-width: 62ch; }
.drow .val { font-family: var(--font-mono); font-size: 12px; line-height: 1.8; letter-spacing: .04em; text-transform: uppercase; color: var(--l-fg-2); text-align: right; }
.drow .val b { color: var(--l-fg); font-weight: 600; }
.drow:hover { background: var(--ink-950); color: var(--paper-50); }
.drow:hover p, .drow:hover .st, .drow:hover .val { color: var(--ink-300); }
.drow:hover .val b { color: var(--paper-50); }
.drow:hover .code .yr { color: var(--ink-500); }
@media (max-width: 920px) {
  .drow { grid-template-columns: 1fr; gap: 12px; padding: 30px 10px; }
  .drow .val { text-align: left; }
}

/* ============================================================
   APPS — subscription cards (dark)
   ============================================================ */
#apps { padding: 150px 0 150px; }
#apps .agrid { margin-top: 84px; display: grid; grid-template-columns: repeat(4, 1fr); border-top: var(--bw-hair) solid var(--d-hairline); border-left: var(--bw-hair) solid var(--d-hairline); }
.acard { border-right: var(--bw-hair) solid var(--d-hairline); border-bottom: var(--bw-hair) solid var(--d-hairline); padding: 28px 26px 34px; min-height: 320px; display: flex; flex-direction: column; position: relative; transition: background .25s var(--ease); }
.acard:hover { background: var(--ink-900); }
.acard .top { display: flex; align-items: center; justify-content: space-between; }
.acard .acc { width: 9px; height: 9px; flex: none; }
.acard .stat { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--d-fg-3); }
.acard .stat.live { color: var(--verified); }
.acard .stat.build { color: var(--watch); }
.acard h3 { margin: 54px 0 0; font-family: var(--font-display); font-weight: 600; font-size: 20px; letter-spacing: var(--tr-heading); }
.acard p { margin: 12px 0 0; font-size: 14px; line-height: 1.65; color: var(--d-fg-2); flex: 1; }
.acard .sub { margin-top: 22px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--d-fg-3); }
@media (max-width: 980px) { #apps .agrid { grid-template-columns: 1fr 1fr; } .acard { min-height: 280px; } }
@media (max-width: 560px) { #apps .agrid { grid-template-columns: 1fr; } .acard { min-height: 0; } .acard h3 { margin-top: 34px; } }

/* ============================================================
   PRINCIPLES (light)
   ============================================================ */
#principles { padding: 140px 0 150px; }
#principles .pgrid { margin-top: 84px; display: grid; grid-template-columns: 1fr 1fr; }
.pitem { padding: 40px 44px 46px; border-top: var(--bw-hair) solid var(--l-hairline); position: relative; }
.pitem:nth-child(odd) { padding-left: 0; }
.pitem:nth-child(even) { border-left: var(--bw-hair) solid var(--l-hairline); }
.pitem .no { font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em; color: var(--l-fg-3); }
.pitem h3 { margin: 18px 0 0; font-family: var(--font-display); font-weight: 600; font-size: 22px; letter-spacing: var(--tr-heading); }
.pitem p { margin: 14px 0 0; font-size: 15px; line-height: 1.7; color: var(--l-fg-2); max-width: 52ch; }
.pitem p b { color: var(--l-fg); font-weight: 600; }
@media (max-width: 860px) { #principles .pgrid { grid-template-columns: 1fr; } .pitem { padding-left: 0; padding-right: 0; } .pitem:nth-child(even) { border-left: 0; } }

/* ============================================================
   FAQ — native details accordion (light)
   ============================================================ */
#faq { padding: 0 0 150px; }
#faq .qa { margin-top: 70px; border-top: var(--bw-hair) solid var(--l-hairline); }
#faq details { border-bottom: var(--bw-hair) solid var(--l-hairline); }
#faq summary { list-style: none; cursor: pointer; display: flex; align-items: baseline; justify-content: space-between; gap: 30px; padding: 26px 6px;
  font-family: var(--font-display); font-weight: 600; font-size: 19px; letter-spacing: var(--tr-heading); transition: color .18s; }
#faq summary::-webkit-details-marker { display: none; }
#faq summary .pm { font-family: var(--font-mono); font-weight: 400; font-size: 20px; color: var(--l-fg-3); flex: none; transition: transform .25s var(--ease); }
#faq details[open] summary .pm { transform: rotate(45deg); color: var(--signal-low); }
#faq summary:hover { color: var(--signal-low); }
#faq .a { padding: 0 6px 30px; max-width: 74ch; color: var(--l-fg-2); font-size: 15.5px; line-height: 1.75; }
#faq .a b { color: var(--l-fg); font-weight: 600; }

/* ============================================================
   CONTACT (dark, cover field)
   ============================================================ */
#contact { padding: 0; }
#contact .tf-content { padding-top: 150px; padding-bottom: 130px; }
#contact .lead, #contact .direct .k { text-shadow: 0 1px 18px rgba(8,8,10,.9); }
#contact .grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
#contact .direct { margin-top: 44px; border-top: var(--bw-hair) solid var(--d-hairline); padding-top: 26px; }
#contact .direct .k { font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--d-fg-3); }
#contact .direct a.mail { display: inline-block; margin-top: 10px; font-family: var(--font-mono); font-size: 17px; color: var(--d-fg); border-bottom: 1px solid var(--d-hairline-strong); padding-bottom: 3px; transition: border-color .18s, color .18s; }
#contact .direct a.mail:hover { color: var(--signal-hi); border-color: var(--signal-hi); }

form.kform { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 18px;
  background: rgba(10,10,13,.88); border: var(--bw-hair) solid var(--d-hairline);
  padding: 34px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--d-fg-3); }
.field input, .field textarea {
  font-family: var(--font-sans); font-size: 15px; color: var(--d-fg);
  background: rgba(255,255,255,.04); border: var(--bw-hair) solid var(--d-hairline);
  border-radius: var(--r-xs); padding: 13px 14px; transition: border-color .18s, background .18s;
}
.field input:hover, .field textarea:hover { border-color: var(--d-hairline-strong); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--signal); background: rgba(255,255,255,.06); }
.field textarea { resize: vertical; min-height: 120px; }
form.kform .actions { grid-column: 1 / -1; display: flex; align-items: center; gap: 22px; margin-top: 8px; flex-wrap: wrap; }
form.kform .privacy { font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; color: var(--d-fg-3); text-transform: uppercase; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
@media (max-width: 980px) { #contact .grid { grid-template-columns: 1fr; gap: 56px; } }
@media (max-width: 560px) { form.kform { grid-template-columns: 1fr; } }

/* ============================================================
   FOOTER — giant cropped wordmark
   ============================================================ */
footer { background: var(--ink-950); border-top: var(--bw-hair) solid var(--d-hairline); overflow: hidden; }
footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding: 72px 0 60px; }
footer .about { max-width: 34ch; }
footer .about .brandline { display: flex; align-items: center; gap: 10px; }
footer .about .brandline svg { width: 18px; height: 18px; color: var(--d-fg); }
footer .about .brandline b { font-family: var(--font-display); font-weight: 700; letter-spacing: .07em; font-size: 15px; }
footer .about p { margin: 18px 0 0; font-size: 13.5px; line-height: 1.7; color: var(--d-fg-2); }
footer .col .h { font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--d-fg-3); margin-bottom: 18px; }
footer .col a { display: block; font-size: 14px; color: var(--d-fg-2); padding: 5px 0; transition: color .15s; }
footer .col a:hover { color: var(--d-fg); }
footer .legal { border-top: var(--bw-hair) solid var(--d-hairline); padding: 22px 0 26px; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--d-fg-3); }
footer .bigword { font-family: var(--font-display); font-weight: 700; letter-spacing: .04em; line-height: .72; font-size: clamp(120px, 18.5vw, 320px); color: var(--ink-800); text-align: center; transform: translateY(24%); user-select: none; pointer-events: none; }
@media (max-width: 860px) { footer .cols { grid-template-columns: 1fr 1fr; } footer .about { grid-column: 1 / -1; } }

/* ============================================================
   404 / SUCCESS pages
   ============================================================ */
.pagecenter { min-height: 100svh; display: flex; align-items: center; }
.pagecenter .inner { width: 100%; }
.pagecenter .mk { width: 56px; height: 56px; color: var(--signal); }
.pagecenter h1 { margin: 36px 0 0; }
.pagecenter .m { margin: 20px 0 0; font-family: var(--font-mono); font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-300); line-height: 2; }
.pagecenter .ctas { margin-top: 44px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ============================================================
   MISSION — scroll-driven process scene (under hero)
   ============================================================ */
#mission { background: var(--d-bg); }
#mtrack { position: relative; height: 480vh; }
.msticky { position: sticky; top: 0; height: 100svh; overflow: hidden; display: flex; align-items: center; }
.mgrid { display: grid; grid-template-columns: minmax(300px, 400px) 1fr; gap: 56px; align-items: center; width: 100%; }

/* ---- step rail ---- */
.msteps h2 { margin: 20px 0 0; }
.msteps ol { list-style: none; margin: 36px 0 0; padding: 0 0 0 22px; position: relative; }
.mprog { position: absolute; left: 0; top: 6px; bottom: 6px; width: 1px; background: var(--d-hairline); }
.mprog i { position: absolute; inset: 0; background: var(--signal); transform: scaleY(0); transform-origin: top; }
.mstep { padding: 13px 0; cursor: pointer; }
.mstep .n { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .14em; color: var(--d-fg-3); transition: color .2s; }
.mstep h3 { margin: 5px 0 0; font-family: var(--font-display); font-weight: 600; font-size: 17px; letter-spacing: var(--tr-heading); color: var(--d-fg-2); transition: color .2s; }
.mstep p { margin: 7px 0 0; font-size: 13.5px; line-height: 1.6; color: var(--d-fg-3); max-height: 0; opacity: 0; overflow: hidden; transition: max-height .4s var(--ease), opacity .4s var(--ease); }
.mstep.act .n { color: var(--signal); }
.mstep.act h3 { color: var(--d-fg); }
.mstep.act p { max-height: 130px; opacity: 1; }
.mstep:hover h3 { color: var(--d-fg); }

/* ---- scene ---- */
.mscene { position: relative; border: var(--bw-hair) solid var(--d-hairline-strong); background: var(--ink-900); aspect-ratio: 920 / 640; max-height: min(76svh, 660px); width: 100%; }
.mscene .gridov { position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 28px 28px; }
.mscene svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.mscene .meta { position: absolute; z-index: 3; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .06em; color: var(--ink-300); background: rgba(8,8,10,.6); padding: 4px 8px; }
.mscene .meta.tl { top: 10px; left: 10px; }
.mscene .meta.tr { top: 10px; right: 10px; }
.mscene .meta.bl { bottom: 10px; left: 10px; }
.mscene .meta.br { bottom: 10px; right: 10px; color: var(--ink-500); }

/* stage groups */
.mscene .stage { opacity: 0; transform: translateY(8px); transition: opacity .45s var(--ease), transform .45s var(--ease); pointer-events: none; }
.mscene .stage.on { opacity: 1; transform: none; }

/* SVG type */
.mscene text { font-family: var(--font-mono); letter-spacing: .04em; }
.mscene text.disp { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.01em; }

/* pairing beam settles once */
#gs1 .beam { opacity: 0; }
#gs1.on .beam { animation: mbeam .9s var(--ease) .25s 1 forwards; }
@keyframes mbeam { 0% { opacity: 0; } 45% { opacity: 1; } 100% { opacity: .55; } }
#gs1 .paired { opacity: 0; }
#gs1.on .paired { animation: mfade .3s var(--ease) 1s 1 forwards; }
@keyframes mfade { to { opacity: 1; } }

/* drone + detections */
#mdrone { transition: opacity .3s var(--ease); }
#gs3 .det { opacity: 0; transform: scale(1.12); transform-origin: center; transform-box: fill-box; transition: opacity .28s var(--ease), transform .28s var(--ease); }
#gs3 .det.on { opacity: 1; transform: scale(1); }
#gs3 .inset { opacity: 0; transition: opacity .4s var(--ease) .15s; }
#gs3.on .inset { opacity: 1; }

/* map cells + bars stagger in with their stage */
#gs4 .cellv { opacity: 0; transition: opacity .3s var(--ease); }
#gs4.on .cellv { opacity: 1; }
#gs4 .exc { opacity: 0; transition: opacity .35s var(--ease) .7s; }
#gs4.on .exc { opacity: 1; }
#gs5 .bar { transform: scaleY(0); transform-origin: bottom; transform-box: fill-box; transition: transform .5s var(--ease); }
#gs5.on .bar { transform: scaleY(1); }
#gs5 .tile { opacity: 0; transform: translateY(6px); transition: opacity .4s var(--ease), transform .4s var(--ease); }
#gs5.on .tile { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .mscene .stage, #gs3 .det, #gs4 .cellv, #gs4 .exc, #gs5 .bar, #gs5 .tile, .mstep p { transition: none; animation: none; }
  #gs1 .beam, #gs1 .paired { animation: none; opacity: 1; }
  #gs5 .bar { transform: none; }
}

/* ---- responsive ---- */
@media (max-width: 1120px) { .mgrid { grid-template-columns: minmax(280px, 340px) 1fr; gap: 36px; } }
@media (max-width: 980px) {
  #mtrack { height: 430vh; }
  .msticky { align-items: flex-start; padding-top: 78px; }
  .mgrid { grid-template-columns: 1fr; gap: 18px; }
  .msteps h2 { font-size: clamp(26px, 6vw, 34px); }
  .mscene { max-height: none; height: auto; aspect-ratio: 920 / 640; order: -1; margin-top: 8px; }
  .js .msteps ol { margin-top: 14px; padding-left: 0; }
  .js .mprog { display: none; }
  .js .mstep { display: none; padding: 4px 0; }
  .js .mstep.act { display: block; }
  .mdots { display: flex; gap: 8px; margin-top: 14px; }
  .mdots i { width: 22px; height: 2px; background: var(--d-hairline-strong); }
  .mdots i.on { background: var(--signal); }
  .mscene .meta { font-size: 9px; padding: 3px 6px; }
}
@media (min-width: 981px) { .mdots { display: none; } }