@import url('tokens.css');

/* =========================================================================
   Ingot Radio — stealth landing page
   Instrument / signals-document aesthetic
   ========================================================================= */

:root {
  --grid-line: rgba(0, 0, 0, 0.045);
  --grid-line-strong: rgba(0, 0, 0, 0.07);
  --plot-bg: #EEF0EC;
  --plot-line: var(--accent);
  --scrim: rgba(250, 250, 248, 0.86);
  --veil: rgba(250, 250, 248, 0.74);
}

/* ---------- dark "instrument" theme ---------- */
[data-theme="dark"] {
  --bg-0: #10151C;
  --bg-1: #0B0F15;
  --surface-0: #161C25;
  --surface-1: #1B222C;
  --surface-2: #222A35;
  --surface-3: #2A3340;
  --border-hairline: #28313D;
  --border-strong: #3C4756;
  --border-faint: #1E2530;
  --fg-0: #EEF1F4;
  --fg-1: #C2C9D2;
  --fg-2: #8A929C;
  --fg-3: #5E6671;
  --fg-4: #404853;
  --accent: #3D6BEC;
  --accent-hi: #5C84F4;
  --accent-lo: #2D5DE5;
  --accent-tint: rgba(61, 107, 236, 0.16);
  --accent-ring: rgba(61, 107, 236, 0.40);
  --grid-line: rgba(255, 255, 255, 0.045);
  --grid-line-strong: rgba(255, 255, 255, 0.075);
  --plot-bg: #0E131A;
  --scrim: rgba(16, 21, 28, 0.86);
  --veil: rgba(16, 21, 28, 0.74);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body, #root {
  margin: 0; padding: 0;
  background: var(--bg-0); color: var(--fg-0);
  font-family: var(--font-sans);
}
body { transition: background var(--dur-route) var(--ease), color var(--dur-route) var(--ease); }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; }
button { cursor: pointer; }
::selection { background: var(--accent); color: #fff; }

.page { width: 100%; overflow-x: clip; position: relative; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 40px; width: 100%; }
.wrap--narrow { max-width: 1000px; }

/* ---------- engineering-grid background utility ---------- */
.gridbg {
  background-color: var(--bg-0);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ---------- document chrome: corner registration ticks ---------- */
.cropmarks { position: fixed; inset: 0; pointer-events: none; z-index: 60; }
.cropmarks span { position: absolute; width: 13px; height: 13px; }
.cropmarks span::before, .cropmarks span::after { content: ""; position: absolute; background: var(--fg-3); opacity: 0.6; }
.cropmarks span::before { width: 13px; height: 1px; top: 0; left: 0; }
.cropmarks span::after { width: 1px; height: 13px; top: 0; left: 0; }
.cropmarks .tl { top: 16px; left: 16px; }
.cropmarks .tr { top: 16px; right: 16px; transform: scaleX(-1); }
.cropmarks .bl { bottom: 16px; left: 16px; transform: scaleY(-1); }
.cropmarks .br { bottom: 16px; right: 16px; transform: scale(-1); }

/* =========================================================================
   classification banner
   ========================================================================= */
.classbar {
  height: 26px; display: flex; align-items: center; justify-content: center; gap: 10px;
  background: var(--fg-0); color: var(--bg-0);
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.22em; text-transform: uppercase;
  font-weight: 500;
}
.classbar .sep { opacity: 0.4; }
.classbar > span { white-space: nowrap; }

/* =========================================================================
   nav
   ========================================================================= */
.nav {
  position: sticky; top: 0; z-index: 40; height: var(--nav-h, 56px);
  display: flex; align-items: center;
  border-bottom: 1px solid var(--border-hairline);
  background: var(--scrim); backdrop-filter: blur(12px);
}
.nav__inner { display: flex; align-items: center; gap: 36px; width: 100%; }
.nav__logo { display: flex; align-items: center; gap: 11px; font-weight: 700; letter-spacing: -0.02em; font-size: 16px; color: var(--fg-0); }
.nav__logo svg { color: var(--fg-0); display: block; }
.nav__links { display: flex; gap: 26px; }
.nav__link { font-size: 13px; color: var(--fg-2); font-weight: 500; transition: color var(--dur-fast) var(--ease); position: relative; padding: 4px 0; }
.nav__link:hover { color: var(--fg-0); }
.nav__spacer { flex: 1; }
.nav__tag { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.16em; color: var(--fg-3); text-transform: uppercase; display: flex; align-items: center; gap: 7px; white-space: nowrap; }
.nav__tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--signal-amber); box-shadow: 0 0 0 3px var(--status-tint-amber); }

/* =========================================================================
   buttons
   ========================================================================= */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13px; font-weight: 500; letter-spacing: 0.01em;
  border: 1px solid transparent; border-radius: var(--r-1);
  height: 38px; padding: 0 18px; white-space: nowrap;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.btn .arrow { font-family: var(--font-mono); font-size: 14px; transition: transform var(--dur-base) var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }
.btn--primary { background: var(--accent); color: #FAFAF8; border-color: var(--accent-lo); }
.btn--primary:hover { background: var(--accent-hi); }
.btn--ghost { background: transparent; color: var(--fg-0); border-color: var(--border-strong); }
.btn--ghost:hover { background: var(--surface-1); }
.btn--lg { height: 46px; padding: 0 24px; font-size: 14px; }
.btn--sm { height: 32px; padding: 0 13px; font-size: 12px; }

/* =========================================================================
   section frame + frequency-ruler divider
   ========================================================================= */
.section { padding: 104px 0; position: relative; }
.section--tight { padding: 88px 0; }
.section__id {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent); display: inline-flex; align-items: center; gap: 9px; margin-bottom: 22px;
}
.section__id::before { content: ""; width: 22px; height: 1px; background: var(--accent); display: inline-block; }
.section__title { font-size: 46px; line-height: 1.04; letter-spacing: -0.025em; font-weight: 700; margin: 0; max-width: 19ch; }
.section__lede { font-size: 18px; line-height: 1.5; color: var(--fg-1); max-width: 52ch; margin: 22px 0 0; text-wrap: pretty; }

/* frequency ruler */
.fruler { position: relative; height: 30px; border-top: 1px solid var(--border-hairline); }
.fruler__ticks { position: absolute; inset: 0; display: flex; justify-content: space-between; }
.fruler__tick { width: 1px; background: var(--border-hairline); }
.fruler__tick--maj { background: var(--border-strong); height: 11px; }
.fruler__tick--min { height: 6px; opacity: 0.7; }
.fruler__label { position: absolute; top: 14px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em; color: var(--fg-3); }

/* =========================================================================
   hero — shared
   ========================================================================= */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--border-hairline); }
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}
.hero__kicker { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.2em; color: var(--accent); text-transform: uppercase; display: flex; align-items: center; gap: 10px; }
.hero__kicker .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-tint); animation: pulse 2.4s var(--ease) infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.45; } }
.hero__sub { font-size: 18px; line-height: 1.55; color: var(--fg-1); max-width: 50ch; text-wrap: pretty; }
.hero__cta { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

/* hero — direction A: statement (split) */
.heroA { padding: 92px 0 0; }
.heroA__grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.heroA__title { font-size: 76px; line-height: 0.98; letter-spacing: -0.04em; font-weight: 700; margin: 26px 0 0; }
.heroA__title .alt { color: var(--accent); }
.heroA__sub { margin: 28px 0 34px; }
.heroA__plot { position: relative; aspect-ratio: 1 / 1; border: 1px solid var(--border-hairline); background: var(--plot-bg); }
.heroA__stats { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--border-hairline); margin-top: 80px; }
.heroA__stat { padding: 24px; border-right: 1px solid var(--border-hairline); }
.heroA__stat:last-child { border-right: 0; }
.heroA__stat .l { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg-2); }
.heroA__stat .v { font-size: 19px; font-weight: 600; letter-spacing: -0.01em; margin-top: 8px; color: var(--fg-0); }

/* hero — direction B: instrument (centered over waterfall) */
.heroB { position: relative; padding: 0; }
.heroB__canvaswrap { position: absolute; inset: 0; }
.heroB__canvaswrap canvas { width: 100%; height: 100%; display: block; }
.heroB__scrim { position: absolute; inset: 0; background: linear-gradient(180deg, var(--bg-0) 0%, transparent 26%, transparent 64%, var(--bg-0) 100%); }
.heroB__scrim::after { content:""; position:absolute; inset:0; background: radial-gradient(ellipse 66% 56% at 50% 44%, var(--veil) 0%, var(--veil) 22%, transparent 74%); }
.heroB__inner { position: relative; padding: 132px 0 118px; text-align: center; display: flex; flex-direction: column; align-items: center; }
.heroB__kicker { justify-content: center; }
.heroB__title { font-size: 82px; line-height: 0.98; letter-spacing: -0.04em; font-weight: 700; margin: 26px 0 0; max-width: 16ch; text-shadow: 0 2px 30px var(--bg-0), 0 0 10px var(--bg-0); }
.heroB__kicker, .heroB__sub { text-shadow: 0 1px 18px var(--bg-0), 0 0 8px var(--bg-0); }
.heroB__title .alt { color: var(--accent); }
.heroB__sub { margin: 28px auto 36px; text-align: center; }
.heroB__readout { display: flex; gap: 0; margin-top: 64px; border: 1px solid var(--border-hairline); background: var(--scrim); backdrop-filter: blur(4px); }
.heroB__readout .cell { padding: 16px 26px; border-right: 1px solid var(--border-hairline); display: flex; flex-direction: column; gap: 6px; }
.heroB__readout .cell:last-child { border-right: 0; }
.heroB__readout .l { font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg-2); }
.heroB__readout .v { font-family: var(--font-mono); font-size: 14px; color: var(--fg-0); letter-spacing: 0.02em; }

/* =========================================================================
   problem section
   ========================================================================= */
.problem { border-bottom: 1px solid var(--border-hairline); }
.problem__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; margin-top: 56px; }
.problem__body p { font-size: 16px; line-height: 1.62; color: var(--fg-1); margin: 0 0 20px; text-wrap: pretty; }
.problem__body p:last-child { margin-bottom: 0; }
.problem__body .lead { font-size: 19px; line-height: 1.5; color: var(--fg-0); font-weight: 500; }
.problem__body .accentword { color: var(--accent); font-weight: 600; }

.needs { background: var(--surface-0); border: 1px solid var(--border-hairline); }
.needs__hd { padding: 16px 22px; border-bottom: 1px solid var(--border-hairline); font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-2); display: flex; justify-content: space-between; }
.needs__item { display: grid; grid-template-columns: 40px 1fr; gap: 16px; padding: 22px; border-bottom: 1px solid var(--border-hairline); }
.needs__item:last-child { border-bottom: 0; }
.needs__n { font-family: var(--font-mono); font-size: 11px; color: var(--accent); letter-spacing: 0.12em; padding-top: 3px; }
.needs__t { font-size: 16px; font-weight: 600; letter-spacing: -0.01em; color: var(--fg-0); }
.needs__d { font-size: 14px; line-height: 1.5; color: var(--fg-2); margin-top: 5px; }
.needs__foot { padding: 20px 22px; background: var(--surface-1); font-size: 14px; color: var(--fg-1); line-height: 1.5; }
.needs__foot strong { color: var(--fg-0); font-weight: 600; }

/* =========================================================================
   field section
   ========================================================================= */
.field { border-bottom: 1px solid var(--border-hairline); position: relative; }
.field__grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 64px; align-items: center; }
.field__body p { font-size: 16px; line-height: 1.62; color: var(--fg-1); margin: 0 0 20px; text-wrap: pretty; }
.field__body p:last-child { margin-bottom: 0; }
/* doctrine citation — subtle superscript, non-distracting */
.field__body .cite {
  font-family: var(--font-mono); font-size: 10px; line-height: 1; letter-spacing: 0.04em;
  color: var(--accent); text-decoration: none; white-space: nowrap;
  vertical-align: super; margin-left: 4px; padding: 1px 4px;
  border: 1px solid var(--border-hairline); border-radius: var(--r-1);
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.field__body .cite:hover { background: var(--accent-tint); border-color: var(--accent); }
.field__pull { font-size: 27px; line-height: 1.3; letter-spacing: -0.015em; font-weight: 600; color: var(--fg-0); margin: 0 0 28px; }
.field__pull .accentword { color: var(--accent); }
.field__viz { border: 1px solid var(--border-hairline); background: var(--plot-bg); position: relative; aspect-ratio: 4 / 3; }
.field__viz .cap { position: absolute; left: 14px; bottom: 12px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-3); }
.field__viz .cap-top { position: absolute; left: 14px; top: 12px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-3); }

/* =========================================================================
   approach section
   ========================================================================= */
.approach { border-bottom: 1px solid var(--border-hairline); background: var(--bg-1); }
.approach__three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border-hairline); border: 1px solid var(--border-hairline); margin-top: 56px; }
.approach__cell { background: var(--bg-1); padding: 30px 26px; }
.approach__cell .k { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); }
.approach__cell .t { font-size: 21px; font-weight: 600; letter-spacing: -0.015em; margin: 14px 0 10px; color: var(--fg-0); }
.approach__cell .d { font-size: 14px; line-height: 1.55; color: var(--fg-2); }
.approach__body { margin-top: 48px; display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.approach__body p { font-size: 16px; line-height: 1.62; color: var(--fg-1); margin: 0 0 18px; text-wrap: pretty; }
.approach__body p:last-child { margin-bottom: 0; }
.approach__body .emph { color: var(--fg-0); font-weight: 500; }

/* =========================================================================
   solutions
   ========================================================================= */
.solutions { border-bottom: 1px solid var(--border-hairline); }
.sols { display: flex; flex-direction: column; border: 1px solid var(--border-hairline); margin-top: 56px; }
.sol { display: grid; grid-template-columns: 64px 1.1fr 1fr; gap: 40px; padding: 40px 36px; border-bottom: 1px solid var(--border-hairline); align-items: start; transition: background var(--dur-base) var(--ease); }
.sol:last-child { border-bottom: 0; }
.sol:hover { background: var(--surface-0); }
.sol__num { font-family: var(--font-mono); font-size: 12px; color: var(--accent); letter-spacing: 0.12em; padding-top: 6px; }
.sol__head .k { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg-2); }
.sol__head .t { font-size: 30px; font-weight: 700; letter-spacing: -0.025em; margin: 12px 0 0; color: var(--fg-0); }
.sol__head .viz { margin-top: 22px; height: 56px; border: 1px solid var(--border-hairline); background: var(--plot-bg); position: relative; max-width: 320px; }
.sol__body p { font-size: 15px; line-height: 1.6; color: var(--fg-1); margin: 0 0 14px; text-wrap: pretty; }
.sol__body p:last-child { margin-bottom: 0; }
.sol__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.tag { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg-2); border: 1px solid var(--border-hairline); padding: 4px 9px; background: var(--surface-0); }

/* =========================================================================
   partners — three tracks
   ========================================================================= */
.partners { border-bottom: 1px solid var(--border-hairline); background: var(--bg-1); }
.tracks { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border-hairline); border: 1px solid var(--border-hairline); margin-top: 56px; }
.track { background: var(--bg-0); padding: 32px 28px 28px; display: flex; flex-direction: column; min-height: 360px; transition: background var(--dur-base) var(--ease); }
.track:hover { background: var(--surface-0); }
.track__top { display: flex; align-items: center; justify-content: space-between; }
.track__idx { font-family: var(--font-mono); font-size: 11px; color: var(--accent); letter-spacing: 0.14em; }
.track__glyph { width: 34px; height: 34px; border: 1px solid var(--border-hairline); display: grid; place-items: center; color: var(--accent); }
.track__glyph svg { width: 18px; height: 18px; }
.track__who { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-2); margin-top: 28px; }
.track__t { font-size: 22px; font-weight: 600; letter-spacing: -0.015em; margin: 10px 0 0; color: var(--fg-0); }
.track__d { font-size: 14px; line-height: 1.55; color: var(--fg-1); margin: 14px 0 0; flex: 1; text-wrap: pretty; }
.track__cta { margin-top: 22px; display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 500; color: var(--accent); padding: 0; background: none; border: none; }
.track__cta .arrow { font-family: var(--font-mono); transition: transform var(--dur-base) var(--ease); }
.track__cta:hover .arrow { transform: translateX(3px); }

/* =========================================================================
   contact — request a brief
   ========================================================================= */
.contact { border-bottom: 1px solid var(--border-hairline); }
.contact__grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 64px; align-items: start; }
.contact__intro .section__title { font-size: 40px; }
.contact__meta { margin-top: 36px; display: flex; flex-direction: column; gap: 18px; }
.contact__meta .row { display: flex; flex-direction: column; gap: 5px; }
.contact__meta .l { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg-2); }
.contact__meta .v { font-size: 15px; color: var(--fg-0); }
.contact__meta .v a { color: var(--accent); }

.form { background: var(--surface-0); border: 1px solid var(--border-hairline); padding: 32px; }
.form__hd { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-2); display: flex; justify-content: space-between; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border-hairline); }
.fieldrow { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field-g { display: flex; flex-direction: column; gap: 7px; margin-bottom: 18px; }
.field-g label { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-2); }
.field-g input, .field-g select, .field-g textarea {
  background: var(--bg-0); border: 1px solid var(--border-hairline); border-radius: var(--r-1);
  padding: 11px 13px; font-size: 14px; color: var(--fg-0); width: 100%;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.field-g textarea { resize: vertical; min-height: 92px; line-height: 1.5; }
.field-g input::placeholder, .field-g textarea::placeholder { color: var(--fg-3); }
.field-g input:focus, .field-g select:focus, .field-g textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-tint); }

/* track segmented picker inside form */
.segs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--border-hairline); border-radius: var(--r-1); overflow: hidden; }
.seg { padding: 10px 8px; font-size: 12px; font-weight: 500; color: var(--fg-2); background: var(--bg-0); border-right: 1px solid var(--border-hairline); transition: all var(--dur-fast) var(--ease); text-align: center; line-height: 1.3; }
.seg:last-child { border-right: 0; }
.seg:hover { background: var(--surface-1); color: var(--fg-0); }
.seg.is-active { background: var(--accent); color: #fff; }
.seg__sub { display: block; font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.1em; opacity: 0.7; margin-top: 3px; text-transform: uppercase; }

.form__submit { margin-top: 8px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.form__note { font-size: 12px; color: var(--fg-3); line-height: 1.45; max-width: 32ch; }
.form__error { color: var(--signal-red); font-weight: 500; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.btn:disabled { opacity: 0.4; pointer-events: none; }

/* sent confirmation */
.sent { text-align: center; padding: 48px 24px; }
.sent__icon { width: 48px; height: 48px; border: 1px solid var(--accent); color: var(--accent); display: grid; place-items: center; margin: 0 auto 22px; }
.sent__t { font-size: 22px; font-weight: 600; letter-spacing: -0.015em; color: var(--fg-0); }
.sent__d { font-size: 14px; color: var(--fg-1); margin-top: 12px; line-height: 1.55; max-width: 40ch; margin-left: auto; margin-right: auto; }
.sent__ref { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; color: var(--fg-3); margin-top: 22px; }

/* =========================================================================
   footer
   ========================================================================= */
.foot { background: var(--bg-1); padding: 72px 0 40px; }
.foot__top { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 56px; }
.foot__brand { display: flex; align-items: center; gap: 11px; font-weight: 700; font-size: 17px; letter-spacing: -0.02em; }
.foot__about { font-size: 14px; color: var(--fg-1); line-height: 1.62; max-width: 42ch; margin-top: 18px; text-wrap: pretty; }
.foot__loc { display: flex; gap: 36px; margin-top: 22px; }
.foot__loc .l { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-2); }
.foot__loc .v { font-size: 14px; color: var(--fg-0); margin-top: 5px; }
.foot__h { font-family: var(--font-mono); font-size: 10px; color: var(--fg-2); letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 16px; }
.foot__l { display: flex; flex-direction: column; gap: 11px; font-size: 14px; color: var(--fg-1); }
.foot__l a:hover { color: var(--accent); }
.foot__bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 28px; margin-top: 48px; border-top: 1px solid var(--border-hairline); font-family: var(--font-mono); font-size: 11px; color: var(--fg-3); letter-spacing: 0.08em; text-transform: uppercase; gap: 16px; flex-wrap: wrap; }
.foot__bottom .accent { color: var(--accent); }

/* =========================================================================
   responsive
   ========================================================================= */
@media (max-width: 980px) {
  .wrap { padding: 0 24px; }
  .heroA__grid, .problem__grid, .field__grid, .approach__body, .contact__grid { grid-template-columns: 1fr; gap: 40px; }
  .heroA__plot { max-width: 460px; }
  .heroA__title, .heroB__title { font-size: 56px; }
  .section__title { font-size: 36px; }
  .approach__three, .tracks { grid-template-columns: 1fr; }
  .sol { grid-template-columns: 1fr; gap: 18px; padding: 30px 24px; }
  .sol__num { padding-top: 0; }
  .nav__links { display: none; }
  .foot__top { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 620px) {
  .heroA__title, .heroB__title { font-size: 42px; }
  .heroA__stats, .heroB__readout { grid-template-columns: 1fr; display: flex; flex-direction: column; }
  .heroB__readout .cell { border-right: 0; border-bottom: 1px solid var(--border-hairline); }
  .heroA__stat { border-right: 0; border-bottom: 1px solid var(--border-hairline); padding-right: 0; }
  .fieldrow { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto; }
  .btn:hover .arrow, .track__cta:hover .arrow { transform: none; }
}