/* ==========================================================================
   Velosphere Systems — site stylesheet
   Tokens → base → layout → components → sections → motion
   ========================================================================== */

:root {
  /* Brand (sampled from the official logo) */
  --navy: #062a5a;
  --navy-2: #0c3d7a;
  --ink: #061a36;
  --ink-deep: #04112a;
  --gold: #bf984c;
  --gold-soft: #d4b06a;
  --gold-ink: #8a6524;   /* gold for small text on light backgrounds (AA contrast) */

  /* Neutrals */
  --paper: #f5f3ee;
  --paper-2: #ece8df;
  --white: #fffefb;
  --text: #0b1a33;
  --muted: #4d586d;
  --line: rgba(6, 26, 54, 0.12);
  --line-strong: rgba(6, 26, 54, 0.22);

  /* On dark */
  --d-text: #eef0f4;
  --d-muted: #9aa6bb;
  --d-line: rgba(238, 240, 244, 0.12);
  --d-line-strong: rgba(238, 240, 244, 0.22);

  --success: #2f8a5b;
  --danger: #b23a3a;
  --danger-light: #ff9b95;

  /* Type */
  --font-sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  --font-serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;

  /* Layout */
  --container: 1240px;
  --gutter: clamp(16px, 4vw, 48px);
  --section-y: clamp(88px, 11vw, 160px);
  --nav-h: 72px;
  --radius: 18px;
  --radius-sm: 10px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 8px); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, h4, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input, textarea, select { font: inherit; color: inherit; }
em { font-style: normal; }

::selection { background: var(--gold); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--navy-2);
  outline-offset: 3px;
  border-radius: 6px;
}
.section--dark :focus-visible, .footer :focus-visible { outline-color: var(--gold-soft); }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; left: 16px; top: -100px; z-index: 100;
  background: var(--ink); color: var(--white); padding: 12px 18px; border-radius: 10px;
  text-decoration: none; font-weight: 500; transition: top .2s var(--ease);
}
.skip-link:focus { top: 16px; }

.container { width: 100%; max-width: calc(var(--container) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); position: relative; }

/* ---------- Typography ---------- */
.h2 {
  font-size: clamp(2rem, 4.4vw, 3.6rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 600;
  max-width: 20ch;
  text-wrap: balance;
}
.h2 em, .hero__title em, .statement em, .contact__title em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.h2 em { color: var(--navy-2); }
.section--dark .h2 em { color: var(--gold-soft); }

.lede { font-size: clamp(1.05rem, 1.35vw, 1.2rem); line-height: 1.6; color: var(--muted); max-width: 56ch; }
.section--dark .lede { color: var(--d-muted); }
.lede--muted { margin-top: 1rem; }
.section--dark .lede--muted { color: var(--d-text); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.eyebrow--light { color: var(--d-muted); }
.eyebrow__num { color: var(--gold-ink); }
.eyebrow--light .eyebrow__num { color: var(--gold-soft); }
.eyebrow__num::after { content: ""; display: inline-block; width: 22px; height: 1px; background: currentColor; margin-left: 10px; vertical-align: middle; opacity: .7; }
.eyebrow__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 4px rgba(191, 152, 76, .18); }

.section-head { margin-bottom: clamp(48px, 6vw, 80px); }

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--ink); --btn-fg: var(--white); --btn-bd: transparent;
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 24px;
  border-radius: 999px;
  border: 1px solid var(--btn-bd);
  background: var(--btn-bg); color: var(--btn-fg);
  font-weight: 500; font-size: 0.98rem; letter-spacing: -0.005em;
  text-decoration: none; cursor: pointer;
  transition: transform .35s var(--ease), background-color .25s, border-color .25s, color .25s, box-shadow .35s var(--ease);
  isolation: isolate; overflow: hidden;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn__arrow { display: inline-block; transition: transform .35s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(4px); }
.btn--ink:hover { --btn-bg: var(--navy); box-shadow: 0 10px 30px -12px rgba(6, 42, 90, .55); }
.btn--ink .btn__arrow { color: var(--gold-soft); }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--ink); --btn-bd: var(--line-strong); }
.btn--ghost:hover { --btn-bd: var(--ink); }
.btn--paper { --btn-bg: var(--paper); --btn-fg: var(--ink); }
.btn--paper:hover { --btn-bg: var(--white); box-shadow: 0 12px 34px -14px rgba(212, 176, 106, .55); }
.btn--paper .btn__arrow { color: var(--navy-2); }
.btn--ghost-light { --btn-bg: transparent; --btn-fg: var(--d-text); --btn-bd: var(--d-line-strong); }
.btn--ghost-light:hover { --btn-bd: var(--d-text); }
.btn--sm { min-height: 42px; padding: 0 18px; font-size: 0.92rem; }
.btn--block { width: 100%; }

/* ==========================================================================
   Navigation
   ========================================================================== */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  height: var(--nav-h);
  transition: background-color .35s, border-color .35s, backdrop-filter .35s, height .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  --nav-h: 64px;
  background: rgba(245, 243, 238, .82);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom-color: var(--line);
}
.nav__inner { height: 100%; display: flex; align-items: center; gap: 32px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; margin-right: auto; }
.brand__marks, .brand__words { display: grid; }
.brand__marks > *, .brand__words > * { grid-area: 1 / 1; transition: opacity .35s; }
.brand__mark { width: 40px; height: auto; transition: transform .6s var(--ease), opacity .35s; }
.brand:hover .brand__mark { transform: rotate(-8deg); }
.brand__word { width: 150px; height: auto; }
.brand__mark--rev, .brand__word--rev { opacity: 0; }

/* Over dark sections the bar turns ink and the logo switches to its reversed variant */
.nav.is-scrolled.on-dark:not(.menu-open) { background: rgba(4, 17, 42, .78); border-bottom-color: var(--d-line); }
.nav.on-dark:not(.menu-open) .brand__mark--rev, .nav.on-dark:not(.menu-open) .brand__word--rev { opacity: 1; }
.nav.on-dark:not(.menu-open) .brand__mark:not(.brand__mark--rev), .nav.on-dark:not(.menu-open) .brand__word:not(.brand__word--rev) { opacity: 0; }
.nav.on-dark .nav__links a { color: var(--d-muted); }
.nav.on-dark .nav__links a:hover, .nav.on-dark .nav__links a.is-active { color: var(--d-text); background: rgba(238, 240, 244, .06); }
.nav.on-dark .nav__cta { --btn-bg: var(--paper); --btn-fg: var(--ink); }
.nav.on-dark .nav__cta .btn__arrow { color: var(--navy-2); }
.nav.on-dark:not(.menu-open) .nav__toggle-bars,
.nav.on-dark:not(.menu-open) .nav__toggle-bars::before,
.nav.on-dark:not(.menu-open) .nav__toggle-bars::after { background: var(--d-text); }
.nav__links { display: flex; gap: 6px; }
.nav__links a {
  position: relative; padding: 8px 14px; border-radius: 999px;
  text-decoration: none; font-size: 0.95rem; color: var(--muted);
  transition: color .2s, background-color .2s;
}
.nav__links a:hover { color: var(--ink); background: rgba(6, 26, 54, .05); }
.nav__links a.is-active { color: var(--ink); }
.nav__links a.is-active::after {
  content: ""; position: absolute; left: 50%; bottom: 2px; width: 4px; height: 4px; margin-left: -2px;
  border-radius: 50%; background: var(--gold);
}
.nav__toggle { display: none; }
.mobile-menu { display: none; }

@media (max-width: 860px) {
  :root { --nav-h: 64px; }
  .nav__links, .nav__cta { display: none; }
  .brand__mark { width: 34px; }
  .brand__word { width: 128px; }
  .nav__toggle {
    display: grid; place-items: center;
    width: 44px; height: 44px; margin-right: -8px;
    background: none; border: 0; border-radius: 12px; cursor: pointer;
  }
  .nav__toggle-bars, .nav__toggle-bars::before, .nav__toggle-bars::after {
    display: block; width: 20px; height: 1.5px; background: var(--ink); border-radius: 2px;
    transition: transform .35s var(--ease), opacity .2s;
  }
  .nav__toggle-bars { position: relative; }
  .nav__toggle-bars::before, .nav__toggle-bars::after { content: ""; position: absolute; left: 0; }
  .nav__toggle-bars::before { transform: translateY(-6px); }
  .nav__toggle-bars::after { transform: translateY(6px); }
  .nav__toggle[aria-expanded="true"] .nav__toggle-bars { background: transparent; }
  .nav__toggle[aria-expanded="true"] .nav__toggle-bars::before { transform: rotate(45deg); }
  .nav__toggle[aria-expanded="true"] .nav__toggle-bars::after { transform: rotate(-45deg); }

  /* backdrop-filter would make the nav the containing block for the fixed menu panel */
  .nav.menu-open { background: var(--paper); border-bottom-color: var(--line); backdrop-filter: none; -webkit-backdrop-filter: none; }
  .mobile-menu {
    display: flex; flex-direction: column; justify-content: space-between; gap: 32px;
    position: fixed; inset: var(--nav-h) 0 0 0;
    padding: 24px var(--gutter) calc(32px + env(safe-area-inset-bottom));
    background: var(--paper);
    overflow-y: auto;
  }
  .mobile-menu[hidden] { display: none; }
  .mobile-menu nav { display: flex; flex-direction: column; }
  .mobile-menu nav a {
    display: flex; align-items: baseline; gap: 16px;
    padding: 18px 0; border-bottom: 1px solid var(--line);
    font-size: 2rem; font-weight: 600; letter-spacing: -0.03em; text-decoration: none;
    animation: menu-in .5s var(--ease) both;
  }
  .mobile-menu nav a:nth-child(2) { animation-delay: .04s; }
  .mobile-menu nav a:nth-child(3) { animation-delay: .08s; }
  .mobile-menu nav a:nth-child(4) { animation-delay: .12s; }
  .mobile-menu nav a span { font-family: var(--font-mono); font-size: .75rem; color: var(--gold); letter-spacing: .1em; font-weight: 400; }
}
@keyframes menu-in { from { opacity: 0; transform: translateY(10px); } }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: min(100svh, 980px);
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + clamp(32px, 6vw, 72px)) 0 clamp(64px, 8vw, 110px);
  overflow: hidden;
}
.hero::before { /* fine engineering grid, fading out */
  content: ""; position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(to right, rgba(6, 26, 54, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(6, 26, 54, .055) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: center top;
  mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 20%, transparent 75%);
}
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
}
.hero__title {
  font-size: clamp(2.75rem, 5.7vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  font-weight: 600;
  color: var(--ink);
  text-wrap: balance;
}
.hero__title em { color: var(--navy-2); letter-spacing: -0.02em; padding-right: .04em; }
.hero__lede { margin-top: clamp(20px, 2.4vw, 32px); font-size: clamp(1.06rem, 1.3vw, 1.22rem); color: var(--muted); max-width: 50ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: clamp(28px, 3vw, 40px); }
.hero__meta {
  display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: clamp(36px, 4vw, 56px);
  font-family: var(--font-mono); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted);
}
.hero__meta li { display: flex; align-items: center; gap: 22px; }
.hero__meta li + li::before { content: ""; width: 4px; height: 4px; border-radius: 50%; background: var(--gold); margin-left: -22px; transform: translateX(-9px); }

.hero__visual { position: relative; }
.orbit { margin: 0; position: relative; }
.orbit__svg { width: 100%; height: auto; overflow: visible; }
.orbit__graticule { stroke: var(--navy); stroke-opacity: .07; stroke-width: 1; }
.orbit__ring { stroke: var(--navy); stroke-opacity: .28; stroke-width: 1; }
.orbit__crescent { stroke: var(--navy); stroke-width: 7; stroke-linecap: round; }
.orbit__dots { stroke: var(--navy); stroke-opacity: .55; stroke-width: 3.2; stroke-linecap: round; stroke-dasharray: 0 11.3; }
.orbit__dots-wrap { transform-origin: 300px 300px; animation: spin 140s linear infinite; mask: none; }
.orbit__gold { stroke-width: 2.4; stroke-linecap: round; }
.orbit__edges path { stroke: var(--navy); stroke-opacity: .26; stroke-width: 1.2; transition: stroke-opacity .5s, stroke .5s; }
.orbit__edges path.is-hot { stroke: var(--gold); stroke-opacity: .9; }
.orbit__pulses circle { fill: var(--gold); }

.node text {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: .08em; text-transform: uppercase;
  fill: var(--muted); transition: fill .4s;
}
.node__core { fill: var(--navy); transition: fill .4s, transform .5s var(--ease); }
.node__halo { fill: var(--white); stroke: var(--navy); stroke-opacity: .22; stroke-width: 1; transition: stroke .4s, stroke-opacity .4s, transform .6s var(--ease); transform-box: fill-box; transform-origin: center; }
.node--core .node__core { fill: var(--ink); }
.node--core .node__halo { stroke-opacity: .35; }
.node.is-hot .node__core { fill: var(--gold); }
.node.is-hot .node__halo { stroke: var(--gold); stroke-opacity: .9; transform: scale(1.25); }
.node.is-hot text { fill: var(--ink); }

/* agent trace card */
.trace {
  position: absolute; left: -12%; bottom: -12%;
  width: min(318px, 64%);
  padding: 14px 16px 16px;
  background: rgba(255, 254, 251, .9);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 30px 60px -30px rgba(6, 26, 54, .35), 0 2px 6px -2px rgba(6, 26, 54, .08);
  font-family: var(--font-mono); font-size: 12px; line-height: 1.55; color: var(--text);
}
.trace__head { display: flex; align-items: center; gap: 8px; padding-bottom: 10px; margin-bottom: 8px; border-bottom: 1px solid var(--line); color: var(--muted); letter-spacing: .06em; text-transform: uppercase; font-size: 10.5px; }
.trace__live { width: 6px; height: 6px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 3px rgba(47, 138, 91, .15); }
.trace__tag { margin-left: auto; padding: 1px 7px; border: 1px solid var(--line); border-radius: 999px; font-size: 9.5px; }
.trace__lines { min-height: calc(1.55em * 7); }
.trace__lines li { display: flex; gap: 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.trace__lines li::before { content: "›"; color: var(--gold); }
.trace__lines li + li::before { content: "├"; color: var(--line-strong); }
.trace__lines li:last-child::before { content: "└"; }
.trace__lines .k { display: inline-block; min-width: 7.2ch; color: var(--navy-2); font-weight: 500; }
.trace__lines .ok { color: var(--success); }
.trace__lines li.is-new { animation: trace-in .45s var(--ease) both; }
@keyframes trace-in { from { opacity: 0; transform: translateX(-6px); } }
.trace__lines.is-fading li { opacity: 0; transition: opacity .4s; }

.hero__scroll {
  position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%);
  width: 26px; height: 42px; border: 1px solid var(--line-strong); border-radius: 14px;
  display: grid; justify-items: center; padding-top: 8px;
}
.hero__scroll span { width: 2px; height: 8px; border-radius: 2px; background: var(--ink); animation: scroll-hint 2.2s var(--ease-in-out) infinite; }
@keyframes scroll-hint { 0%, 100% { transform: translateY(0); opacity: 1; } 60% { transform: translateY(12px); opacity: 0; } }

@media (max-width: 980px) {
  .hero { min-height: auto; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { max-width: 560px; width: 100%; margin: 8px auto 0; }
  .trace { left: 0; bottom: -4%; }
  .hero__scroll { display: none; }
}
@media (max-width: 560px) {
  .hero__title { font-size: clamp(2.5rem, 11.5vw, 3.4rem); letter-spacing: -0.04em; }
  .hero__actions .btn { flex: 1 1 auto; }
  .hero__visual { margin-top: 16px; }
  .trace { position: relative; left: auto; bottom: auto; width: 100%; margin-top: -36px; }
  .trace__lines { min-height: calc(1.55em * 7); }
  .node text { font-size: 15px; }
}

/* ==========================================================================
   Dark sections
   ========================================================================== */
.section--dark {
  background:
    radial-gradient(ellipse 60% 50% at 85% 0%, rgba(12, 61, 122, .45), transparent 70%),
    radial-gradient(ellipse 50% 40% at 0% 100%, rgba(12, 61, 122, .25), transparent 70%),
    var(--ink-deep);
  color: var(--d-text);
  isolation: isolate;
}
.section--dark::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(238, 240, 244, .04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(238, 240, 244, .04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, transparent, #000 20%, #000 80%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 20%, #000 80%, transparent);
}

/* ==========================================================================
   The Shift
   ========================================================================== */
.shift__grid {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 96px); align-items: center;
}
.shift .h2 { margin-bottom: 1.6rem; max-width: 17ch; }

.effort {
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--d-line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(238, 240, 244, .045), rgba(238, 240, 244, .015));
}
.effort__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.effort__title { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--d-muted); }

.switch { position: relative; display: inline-flex; padding: 3px; border: 1px solid var(--d-line-strong); border-radius: 999px; }
.switch__btn {
  position: relative; z-index: 1;
  min-width: 64px; min-height: 34px; padding: 0 14px;
  background: none; border: 0; border-radius: 999px; cursor: pointer;
  font-size: .85rem; color: var(--d-muted); transition: color .3s;
}
.switch__btn[aria-pressed="true"] { color: var(--ink); }
.switch__thumb {
  position: absolute; top: 3px; bottom: 3px; left: 3px; width: calc(50% - 3px);
  border-radius: 999px; background: var(--paper);
  transition: transform .5s var(--ease);
}
.effort[data-era="now"] .switch__thumb { transform: translateX(100%); }

.effort__rows { display: grid; gap: 14px; }
.effort__row { display: grid; gap: 7px; }
/* Relative effort, then → now (illustrative) */
.effort__row:nth-child(1) { --then: .92; --now: .16; }
.effort__row:nth-child(2) { --then: .34; --now: .78; }
.effort__row:nth-child(3) { --then: .40; --now: .84; }
.effort__row:nth-child(4) { --then: .28; --now: .86; }
.effort__row:nth-child(5) { --then: .30; --now: .90; }
.effort__row:nth-child(6) { --then: .22; --now: .74; }
.effort__row:nth-child(7) { --then: .26; --now: .80; }
.effort__label { display: flex; align-items: center; gap: 10px; font-size: .92rem; color: var(--d-text); }
.effort__ai {
  font-family: var(--font-mono); font-size: .66rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--gold-soft); border: 1px solid rgba(212, 176, 106, .35); border-radius: 999px; padding: 1px 8px;
  opacity: 0; transition: opacity .5s;
}
.effort[data-era="now"] .effort__ai { opacity: 1; }
.effort__bar { height: 6px; border-radius: 6px; background: rgba(238, 240, 244, .07); overflow: hidden; }
.effort__bar i {
  display: block; height: 100%; border-radius: inherit;
  background: linear-gradient(90deg, #6f86ad, #a9b8d3);
  transform-origin: left; transform: scaleX(var(--then));
  transition: transform 1.1s var(--ease);
}
.effort[data-era="now"] .effort__bar i { transform: scaleX(var(--now)); }
.effort[data-era="now"] .effort__row:not(.effort__row--code) .effort__bar i { background: linear-gradient(90deg, #a0864f, var(--gold-soft)); }
.effort__row:nth-child(2) i { transition-delay: .05s; } .effort__row:nth-child(3) i { transition-delay: .1s; }
.effort__row:nth-child(4) i { transition-delay: .15s; } .effort__row:nth-child(5) i { transition-delay: .2s; }
.effort__row:nth-child(6) i { transition-delay: .25s; } .effort__row:nth-child(7) i { transition-delay: .3s; }
.effort__note { margin-top: 20px; font-size: .78rem; color: var(--d-muted); }

.statement {
  margin-top: clamp(80px, 10vw, 150px);
  padding-top: clamp(40px, 5vw, 64px);
  border-top: 1px solid var(--d-line);
  display: flex; flex-direction: column;
  font-size: clamp(2.2rem, 6.2vw, 5.4rem);
  line-height: 1.02; letter-spacing: -0.045em; font-weight: 600;
}
.statement span:first-child { color: var(--d-muted); }
.statement em { color: var(--gold-soft); }

@media (max-width: 980px) {
  .shift__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Services
   ========================================================================== */
.cards {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}
.card {
  grid-column: span 2;
  position: relative;
  display: flex; flex-direction: column;
  padding: clamp(24px, 2.6vw, 34px);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .5s var(--ease), border-color .4s, box-shadow .5s var(--ease);
  overflow: hidden;
}
.card--feature { grid-column: span 4; }
.card::after { /* hairline that draws across the top on hover */
  content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 100%;
  background: linear-gradient(90deg, var(--gold), transparent);
  transform: scaleX(0); transform-origin: left; transition: transform .7s var(--ease);
}
.card:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: 0 30px 60px -36px rgba(6, 26, 54, .35); }
.card:hover::after { transform: scaleX(1); }
.card__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: clamp(28px, 4vw, 56px); }
.card__index { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .12em; color: var(--muted); }
.card__icon { width: 36px; height: 36px; fill: none; stroke: var(--navy); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; transition: stroke .4s, transform .6s var(--ease); }
.card__icon .dash { stroke-dasharray: 3 4; }
.card:hover .card__icon { stroke: var(--gold); transform: rotate(-6deg) scale(1.05); }
.card__title { font-size: clamp(1.4rem, 1.9vw, 1.7rem); letter-spacing: -0.03em; font-weight: 600; line-height: 1.1; }
.card__lead { margin-top: 8px; font-family: var(--font-serif); font-style: italic; font-size: 1.25rem; color: var(--navy-2); line-height: 1.25; }
.card__body { margin-top: 14px; color: var(--muted); font-size: .98rem; line-height: 1.6; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 24px; }
.tags li {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .02em;
  padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted);
  transition: border-color .3s, color .3s;
}
.card:hover .tags li { border-color: var(--line-strong); color: var(--text); }

/* Feature card — Agentic AI */
.card--feature {
  background:
    radial-gradient(ellipse 70% 80% at 100% 0%, rgba(12, 61, 122, .55), transparent 60%),
    var(--ink);
  color: var(--d-text);
  border-color: transparent;
}
.card--feature:hover { border-color: rgba(212, 176, 106, .4); box-shadow: 0 40px 80px -40px rgba(6, 26, 54, .8); }
.card--feature .card__index { color: var(--d-muted); }
.card--feature .card__title { font-size: clamp(1.9rem, 3vw, 2.6rem); }
.card--feature .card__lead { color: var(--gold-soft); font-size: 1.45rem; }
.card--feature .card__body { color: var(--d-muted); max-width: 46ch; }
.card--feature .tags li { border-color: var(--d-line-strong); color: var(--d-text); }
.card__badge {
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--gold-soft); border: 1px solid rgba(212, 176, 106, .4); border-radius: 999px; padding: 3px 10px;
}
.card__feature-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(24px, 3vw, 44px); flex: 1; }
.card__feature-grid > div:first-child { display: flex; flex-direction: column; }

.flow { display: grid; gap: 10px; align-content: center; position: relative; }
.flow::before { content: ""; position: absolute; left: 22px; top: 18px; bottom: 18px; width: 1px; background: linear-gradient(var(--d-line-strong), rgba(212, 176, 106, .6)); }
.flow__step {
  position: relative; display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border: 1px solid var(--d-line); border-radius: 12px;
  background: #071a3a; font-size: .88rem; color: var(--d-text);
}
.flow__step span, .flow__step--split span { font-family: var(--font-mono); font-size: .68rem; color: var(--d-muted); }
.flow__step--split { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 0; border: 0; background: none; }
.flow__step--split > div { display: flex; align-items: center; gap: 8px; padding: 10px 12px; border: 1px solid var(--d-line); border-radius: 12px; background: #071a3a; font-size: .84rem; }
.flow__step--gold { border-color: rgba(212, 176, 106, .45); color: var(--gold-soft); }
.flow__step, .flow__step--split > div { transition: border-color .4s, transform .5s var(--ease); }
.card--feature.is-in .flow__step, .card--feature.is-in .flow__step--split > div { animation: flow-glow 6s var(--ease-in-out) infinite; }
.card--feature .flow > :nth-child(1) { animation-delay: 0s !important; }
.card--feature .flow > :nth-child(2) { animation-delay: .8s !important; }
.card--feature .flow__step--split > div:nth-child(1) { animation-delay: 1.6s !important; }
.card--feature .flow__step--split > div:nth-child(2) { animation-delay: 1.9s !important; }
.card--feature .flow > :nth-child(4) { animation-delay: 2.7s !important; }
.card--feature .flow > :nth-child(5) { animation-delay: 3.5s !important; }
.card--feature .flow__step--split { animation: none !important; }
@keyframes flow-glow { 0%, 18%, 100% { border-color: var(--d-line); } 6% { border-color: rgba(212, 176, 106, .75); } }

@media (max-width: 1080px) {
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .card { grid-column: span 1; }
  .card--feature { grid-column: span 2; }
}
@media (max-width: 680px) {
  .cards { grid-template-columns: 1fr; }
  .card--feature { grid-column: span 1; }
  .card__feature-grid { grid-template-columns: 1fr; }
  .card__top { margin-bottom: 24px; }
}

/* ==========================================================================
   Intelligent system (scrollytelling)
   ========================================================================== */
.systems__grid {
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}
.systems__stage { position: sticky; top: calc(var(--nav-h) + 24px); }
.stack { width: 100%; height: auto; max-height: calc(100svh - var(--nav-h) - 64px); margin-inline: auto; overflow: visible; }

.stack__frame { fill: none; stroke: var(--d-line); stroke-width: 1; stroke-dasharray: 4 6; transition: stroke .6s; }
.stack__frame-label { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; fill: var(--d-muted); opacity: .45; transition: fill .6s, opacity .6s; }
.stack__edges path { stroke: var(--d-line-strong); stroke-width: 1.3; stroke-dasharray: 3 5; transition: stroke .6s; }
.stack__node rect { fill: rgba(9, 28, 60, .85); stroke: var(--d-line-strong); stroke-width: 1; transition: fill .6s, stroke .6s; }
.stack__node .t1 { font-family: var(--font-sans); font-size: 17px; font-weight: 600; letter-spacing: -.01em; fill: var(--d-muted); transition: fill .6s; }
.stack__node .t2 { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .04em; fill: var(--d-muted); opacity: .65; transition: opacity .6s; }

.stack [data-layer].is-lit.stack__frame { stroke: rgba(212, 176, 106, .75); }
.stack .stack__frame-label.is-lit { fill: var(--gold-soft); opacity: 1; }
.stack__edges path.is-lit { stroke: var(--gold-soft); stroke-width: 1.8; stroke-dasharray: 5 5; animation: dash-flow 1.2s linear infinite; }
.stack__node.is-lit rect { fill: #0e2a55; stroke: rgba(238, 240, 244, .5); }
.stack__node.is-lit .t1 { fill: var(--d-text); }
.stack__node.is-lit .t2 { opacity: 1; }
.stack__node.is-current rect { stroke: var(--gold-soft); }
.stack__node--app.is-lit rect { fill: var(--paper); stroke: var(--paper); }
.stack__node--app.is-lit .t1 { fill: var(--ink); }
.stack__node--app.is-lit .t2 { fill: var(--muted); }
@keyframes dash-flow { to { stroke-dashoffset: -20; } }

.systems__steps { counter-reset: s; padding-block: 8vh 16vh; }
.sstep {
  position: relative;
  padding: 28px 0 28px 28px;
  border-left: 1px solid var(--d-line);
  min-height: 34vh;
  display: flex; flex-direction: column; justify-content: center;
  opacity: .38; transition: opacity .5s, border-color .5s;
}
.sstep::before { content: ""; position: absolute; left: -1px; top: 28px; bottom: 28px; width: 1px; background: var(--gold-soft); transform: scaleY(0); transform-origin: top; transition: transform .6s var(--ease); }
.sstep.is-current { opacity: 1; }
.sstep.is-current::before { transform: scaleY(1); }
.sstep__num { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .12em; color: var(--gold-soft); }
.sstep h3 { margin-top: 8px; font-size: clamp(1.5rem, 2.4vw, 2rem); font-weight: 600; letter-spacing: -.03em; }
.sstep p { margin-top: 10px; color: var(--d-muted); max-width: 40ch; }

html:not(.js) .sstep { opacity: 1; }

@media (max-width: 900px) {
  .systems__grid { grid-template-columns: 1fr; gap: 0; }
  .systems__stage {
    top: var(--nav-h); z-index: 2;
    margin-inline: calc(var(--gutter) * -1);
    padding: 12px var(--gutter) 16px;
    background: linear-gradient(var(--ink-deep) 85%, rgba(4, 17, 42, 0));
  }
  .stack { max-height: 40svh; }
  .systems__steps { padding-block: 16px 20vh; }
  .sstep { min-height: 42svh; padding-left: 22px; }
}

/* ==========================================================================
   Approach
   ========================================================================== */
.process {
  position: relative;
  display: grid; grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
  padding-top: 36px;
}
.process::before, .process::after { content: ""; position: absolute; left: 0; right: 0; top: 7px; height: 1px; }
.process::before { background: var(--line-strong); }
.process::after { background: linear-gradient(90deg, var(--navy), var(--gold)); transform-origin: left; transform: scaleX(var(--progress, 0)); }
.process__step { position: relative; }
.process__step::before {
  content: ""; position: absolute; top: -36px; left: 0;
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--paper); border: 1px solid var(--line-strong);
  transition: background-color .4s, border-color .4s, box-shadow .4s;
}
.process__step.is-reached::before { background: var(--navy); border-color: var(--navy); box-shadow: 0 0 0 5px rgba(191, 152, 76, .22); }
.process__step:last-child.is-reached::before { background: var(--gold); border-color: var(--gold); }
.process__num { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .12em; color: var(--gold-ink); }
.process__step h3 { margin-top: 6px; font-size: 1.4rem; letter-spacing: -.03em; font-weight: 600; }
.process__step p { margin-top: 8px; color: var(--muted); font-size: .96rem; line-height: 1.55; }

.why { margin-top: clamp(80px, 10vw, 140px); display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 2.2fr); gap: clamp(24px, 4vw, 64px); }
.why__title, .toolkit__title { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); font-weight: 400; padding-top: 6px; }
.why__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.principle { padding: 28px 28px 32px 0; border-bottom: 1px solid var(--line); }
.principle:nth-child(odd) { padding-right: clamp(20px, 3vw, 44px); border-right: 1px solid var(--line); }
.principle:nth-child(even) { padding-left: clamp(20px, 3vw, 44px); }
.principle h4 { font-size: 1.3rem; letter-spacing: -.025em; font-weight: 600; }
.principle p { margin-top: 8px; color: var(--muted); }

.toolkit { margin-top: clamp(56px, 7vw, 96px); display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 2.2fr); gap: clamp(24px, 4vw, 64px); }
.toolkit__rows { margin: 0; border-top: 1px solid var(--line); }
.toolkit__rows > div { display: grid; grid-template-columns: 160px 1fr; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.toolkit__rows dt { font-weight: 600; letter-spacing: -.01em; }
.toolkit__rows dd { margin: 0; font-family: var(--font-mono); font-size: .88rem; color: var(--muted); letter-spacing: .01em; }

@media (max-width: 980px) {
  .process { grid-template-columns: 1fr; padding-top: 0; padding-left: 40px; gap: 28px; }
  .process::before, .process::after { left: 7px; right: auto; top: 8px; bottom: 8px; width: 1px; height: auto; }
  .process::after { transform-origin: top; transform: scaleY(var(--progress, 0)); background: linear-gradient(var(--navy), var(--gold)); }
  .process__step::before { top: 4px; left: -40px; }
  .why, .toolkit { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .why__grid { grid-template-columns: 1fr; }
  .principle, .principle:nth-child(odd), .principle:nth-child(even) { padding: 22px 0; border-right: 0; }
  .toolkit__rows > div { grid-template-columns: 1fr; gap: 4px; }
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact { overflow: hidden; }
.contact::after { /* echo of the logo's orbit */
  content: ""; position: absolute; z-index: -1; pointer-events: none;
  width: 900px; height: 900px; left: -420px; bottom: -520px; border-radius: 50%;
  border: 1px solid rgba(212, 176, 106, .18);
  box-shadow: inset 0 0 0 80px rgba(238, 240, 244, .012), 0 0 0 80px rgba(238, 240, 244, .012);
}
.contact__grid { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: clamp(40px, 6vw, 96px); align-items: start; }
.contact__copy { position: sticky; top: calc(var(--nav-h) + 40px); }
.contact__title {
  font-size: clamp(2.6rem, 6vw, 5.2rem); line-height: .98; letter-spacing: -0.045em; font-weight: 600;
  margin-bottom: 1.6rem; text-wrap: balance;
}
.contact__title em { color: var(--gold-soft); }
.contact__points { margin-top: 32px; display: grid; gap: 12px; }
.contact__points li { display: flex; gap: 12px; align-items: baseline; color: var(--d-text); }
.contact__points li::before { content: ""; flex: none; width: 14px; height: 1px; background: var(--gold-soft); transform: translateY(-4px); }
.contact__email { margin-top: 32px; color: var(--d-muted); }
.contact__email a { color: var(--d-text); text-decoration-color: rgba(212, 176, 106, .6); text-underline-offset: 4px; }

.contact__panel {
  position: relative;
  padding: clamp(24px, 3.4vw, 44px);
  border: 1px solid var(--d-line);
  border-radius: calc(var(--radius) + 6px);
  background: linear-gradient(180deg, rgba(238, 240, 244, .06), rgba(238, 240, 244, .02));
  backdrop-filter: blur(6px);
}

.form { display: grid; gap: 20px; }
.form__row--2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: grid; gap: 8px; min-width: 0; border: 0; padding: 0; margin: 0; }
.field label, .field legend { font-size: .9rem; color: var(--d-text); font-weight: 500; padding: 0; }
.field .opt { font-weight: 400; color: var(--d-muted); font-size: .8rem; margin-left: 4px; }
.field input, .field textarea {
  width: 100%; min-height: 50px; padding: 12px 16px;
  background: rgba(4, 17, 42, .55);
  border: 1px solid var(--d-line-strong); border-radius: 12px;
  color: var(--d-text); font-size: 1rem;
  transition: border-color .25s, background-color .25s, box-shadow .25s;
}
.field textarea { resize: vertical; min-height: 140px; line-height: 1.55; }
.field input::placeholder, .field textarea::placeholder { color: rgba(154, 166, 187, .7); }
.field input:hover, .field textarea:hover { border-color: rgba(238, 240, 244, .35); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--gold-soft); background: rgba(4, 17, 42, .8); box-shadow: 0 0 0 4px rgba(212, 176, 106, .14); }
.field.has-error input, .field.has-error textarea { border-color: var(--danger-light); }
.field__error { min-height: 0; font-size: .84rem; color: var(--danger-light); }
.field__error:empty { display: none; }

.field--chips legend { margin-bottom: 8px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { position: relative; cursor: pointer; }
.chip input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.chip span {
  display: inline-flex; align-items: center; min-height: 42px; padding: 0 16px;
  border: 1px solid var(--d-line-strong); border-radius: 999px;
  font-size: .9rem; color: var(--d-text);
  transition: background-color .25s, border-color .25s, color .25s;
}
.chip:hover span { border-color: rgba(238, 240, 244, .45); }
.chip input:checked + span { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.chip input:focus-visible + span { outline: 2px solid var(--gold-soft); outline-offset: 3px; }
.field--chips.has-error .chip span { border-color: rgba(255, 155, 149, .6); }

.hp { position: absolute !important; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

.form__footer { display: flex; align-items: center; flex-wrap: wrap; gap: 16px 20px; margin-top: 4px; }
.form__submit { min-width: 230px; }
.spinner { display: none; width: 18px; height: 18px; border-radius: 50%; border: 2px solid rgba(6, 26, 54, .2); border-top-color: var(--ink); animation: spin .8s linear infinite; }
.form.is-loading .form__submit { pointer-events: none; opacity: .85; }
.form.is-loading .spinner { display: inline-block; }
.form.is-loading .form__submit .btn__arrow { display: none; }
.form__status { font-size: .92rem; color: var(--d-muted); flex: 1 1 220px; }
.form__status.is-error { color: var(--danger-light); }
.form__status a { color: var(--d-text); }

.form-success { text-align: left; padding: clamp(8px, 2vw, 24px) 0; }
.form-success:focus { outline: none; }
.form-success svg { width: 56px; height: 56px; fill: none; stroke: var(--gold-soft); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 24px; }
.form-success svg circle { stroke-dasharray: 164; stroke-dashoffset: 164; animation: draw 1s var(--ease) forwards; }
.form-success svg path { stroke-dasharray: 40; stroke-dashoffset: 40; animation: draw .6s .5s var(--ease) forwards; }
.form-success h3 { font-size: clamp(1.8rem, 3vw, 2.4rem); letter-spacing: -.035em; font-weight: 600; }
.form-success p { margin: 12px 0 28px; color: var(--d-muted); max-width: 42ch; }
.form-success strong { color: var(--d-text); font-weight: 500; }
@keyframes draw { to { stroke-dashoffset: 0; } }

@media (max-width: 980px) {
  .contact__grid { grid-template-columns: 1fr; }
  .contact__copy { position: static; }
}
@media (max-width: 560px) {
  .form__row--2 { grid-template-columns: 1fr; }
  .form__submit { width: 100%; min-width: 0; }
  .contact__panel { margin-inline: calc(var(--gutter) * -0.5); }
  .field input, .field textarea { font-size: 16px; } /* prevents iOS zoom */
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer { background: var(--ink-deep); color: var(--d-muted); border-top: 1px solid var(--d-line); padding: 40px 0 calc(40px + env(safe-area-inset-bottom)); font-size: .92rem; }
.footer__inner { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 20px 40px; }
.footer__brand { display: flex; align-items: center; gap: 14px; }
.footer__mark { width: 40px; height: auto; }
.footer__name { color: var(--d-text); font-weight: 600; letter-spacing: -.01em; }
.footer__tag { font-size: .85rem; }
.footer__links { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 24px; }
.footer a { text-decoration: none; transition: color .2s; }
.footer a:hover { color: var(--d-text); }
.footer__social { display: flex; gap: 16px; }
.footer__copy { grid-column: 1 / -1; padding-top: 20px; border-top: 1px solid var(--d-line); font-size: .8rem; }
@media (max-width: 760px) {
  .footer__inner { grid-template-columns: 1fr; }
  .footer__links { justify-content: flex-start; }
}

/* ==========================================================================
   Motion: reveals (only when JS is running and motion is allowed)
   ========================================================================== */
@keyframes spin { to { transform: rotate(360deg); } }

html.js [data-reveal] {
  opacity: 0; transform: translateY(18px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
  transition-delay: var(--delay, 0s);
}
html.js [data-reveal].is-in { opacity: 1; transform: none; }

html.js [data-split] .w { display: inline-block; overflow: hidden; vertical-align: top; padding-bottom: .08em; margin-bottom: -.08em; }
html.js [data-split] .w > span { display: inline-block; transform: translateY(105%); transition: transform 1s var(--ease); transition-delay: calc(var(--i) * 45ms + 80ms); }
html.js [data-split].is-in .w > span { transform: none; }

html.js .hero__visual { opacity: 0; transform: scale(.97); transition: opacity 1.4s var(--ease) .25s, transform 1.6s var(--ease) .25s; }
html.js .hero__visual.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; transition-delay: 0s !important; }
  html.js [data-reveal], html.js .hero__visual { opacity: 1; transform: none; }
  html.js [data-split] .w > span { transform: none; }
  .orbit__dots-wrap { animation: none; }
}