/* ═══════════════ SOME CAPITAL — design system ═══════════════
   Light by default, dark on demand. Brand: ivory, ink, gold.
   Display: Fraunces (variable serif) · Body: Inter (tabular figures) */

:root {                       /* ── LIGHT (default) ── */
  --bg: #F6F3EC;
  --bg-2: #FBF9F3;
  --panel: #FDFCF8;
  --panel-alpha: rgba(253, 252, 248, 0.75);
  --line: rgba(140, 105, 35, 0.30);
  --line-soft: rgba(140, 105, 35, 0.15);
  --text: #17130C;
  --mut: #5B5344;
  --mut-2: #8A8172;
  --gold: #C89C45;
  --gold-ink: #8C6A24;        /* gold dark enough for text on ivory */
  --champagne: #F3CC70;
  --cream: #FFF3BE;
  --accent-grad: linear-gradient(100deg, #C89C45 0%, #8C6A24 100%);
  --aurum-img: url("/assets/img/aurum-hero-light.jpg");
  --head-bg: rgba(246, 243, 236, 0.82);
  --scrim-top: linear-gradient(180deg, rgba(246,243,236,0.75) 0%, rgba(246,243,236,0.28) 26%, rgba(246,243,236,0) 48%);
  --scrim-hero: radial-gradient(90% 70% at 18% 78%, rgba(246,243,236,0.82) 0%, rgba(246,243,236,0.35) 55%, rgba(246,243,236,0) 100%);
  --strip-bg: rgba(246, 243, 236, 0.55);
  --mark: #8C6A24;
  --nav-overlay: rgba(246, 243, 236, 0.98);
  --ok-bg: rgba(96, 140, 60, 0.12);  --ok-line: rgba(96, 140, 60, 0.4);  --ok-text: #3E5B26;
  --err-bg: rgba(180, 85, 46, 0.10); --err-line: rgba(180, 85, 46, 0.4); --err-text: #7E3717;
  --sel: rgba(200, 156, 69, 0.35);
  --pad: clamp(1.25rem, 5vw, 5rem);
  --max: 1320px;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, "Segoe UI", Roboto, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="dark"] {         /* ── DARK ── */
  --bg: #0A0908;
  --bg-2: #100E0B;
  --panel: #15120E;
  --panel-alpha: rgba(21, 18, 14, 0.6);
  --line: rgba(243, 204, 112, 0.16);
  --line-soft: rgba(243, 204, 112, 0.09);
  --text: #F5F1E6;
  --mut: #A99F8C;
  --mut-2: #7E7668;
  --gold-ink: #F3CC70;
  --accent-grad: linear-gradient(100deg, #FFF3BE 0%, #F3CC70 45%, #C89C45 100%);
  --aurum-img: url("/assets/img/aurum-hero.jpg");
  --head-bg: rgba(10, 9, 8, 0.82);
  --scrim-top: linear-gradient(180deg, rgba(10,9,8,0.62) 0%, rgba(10,9,8,0.18) 26%, rgba(10,9,8,0) 45%);
  --scrim-hero: radial-gradient(90% 70% at 18% 78%, rgba(10,9,8,0.72) 0%, rgba(10,9,8,0.25) 55%, rgba(10,9,8,0) 100%);
  --strip-bg: rgba(10, 9, 8, 0.35);
  --mark: #F3CC70;
  --nav-overlay: rgba(10, 9, 8, 0.97);
  --ok-bg: rgba(120, 160, 80, 0.12); --ok-line: rgba(160, 200, 110, 0.35); --ok-text: #D8E8BE;
  --err-bg: rgba(180, 85, 46, 0.10); --err-line: rgba(200, 110, 70, 0.4);  --err-text: #F0C9B0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (min-width: 2200px) { html { font-size: 21px; } }   /* TV / 4K */
@media (min-width: 3400px) { html { font-size: 27px; } }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.5s var(--ease), color 0.5s var(--ease);
}
body.nav-open { overflow: hidden; }

::selection { background: var(--sel); color: var(--text); }

a { color: var(--gold-ink); text-decoration-color: var(--line); text-underline-offset: 0.18em; }
a:hover { text-decoration-color: var(--gold-ink); }

:focus-visible { outline: 2px solid var(--gold-ink); outline-offset: 3px; border-radius: 2px; }

.skip {
  position: absolute; left: -999px; top: 0.5rem; z-index: 200;
  background: var(--gold); color: #17130C; padding: 0.6rem 1rem; font-weight: 600;
}
.skip:focus { left: 0.5rem; }

img { max-width: 100%; height: auto; display: block; }

/* ── cinematic layer ─────────────────────────────── */
.aurum {
  position: fixed; inset: 0; z-index: -1;
  background: var(--bg) var(--aurum-img) center / cover no-repeat;
}
#aurum-canvas { width: 100%; height: 100%; display: block; }

/* ── header ──────────────────────────────────────── */
.site-head {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem var(--pad);
  transition: padding 0.4s var(--ease);
}
.site-head::before {           /* blur lives here — NOT on .site-head, so a
                                  fixed descendant keeps the viewport as its
                                  containing block (mobile menu fix) */
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--head-bg);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
  opacity: 0; transition: opacity 0.5s var(--ease);
}
.site-head.scrolled { padding-top: 0.7rem; padding-bottom: 0.7rem; }
.site-head.scrolled::before { opacity: 1; }

.brand { display: flex; align-items: center; gap: 0.8rem; text-decoration: none; position: relative; z-index: 101; }
.mark { width: 40px; height: auto; flex: none; color: var(--mark); transition: color 0.5s var(--ease); }
.mark-small { width: 34px; }
.brand-name {
  font-family: var(--serif); font-weight: 500; font-size: 1.35rem;
  color: var(--text); letter-spacing: 0.01em;
}
.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav a {
  color: var(--text); text-decoration: none; font-size: 0.95rem; font-weight: 500;
  letter-spacing: 0.02em; opacity: 0.85; transition: opacity 0.3s;
}
.site-nav a:hover { opacity: 1; }
.nav-cta {
  border: 1px solid var(--line); padding: 0.55rem 1.15rem; border-radius: 999px;
  color: var(--gold-ink) !important;
  transition: background 0.35s var(--ease), border-color 0.35s;
}
.nav-cta:hover { background: rgba(200, 156, 69, 0.12); border-color: var(--gold); }

.head-tools { display: flex; align-items: center; gap: 0.8rem; position: relative; z-index: 101; }

.theme-toggle {
  width: 48px; height: 48px; border-radius: 50%;
  border: 1px solid var(--line); background: transparent; color: var(--gold-ink);
  cursor: pointer; display: grid; place-items: center;
  transition: border-color 0.35s, background 0.35s;
}
.theme-toggle:hover { border-color: var(--gold); background: rgba(200, 156, 69, 0.1); }
.theme-toggle svg { width: 20px; height: 20px; }
.theme-toggle .moon { display: none; }
[data-theme="dark"] .theme-toggle .moon { display: block; }
[data-theme="dark"] .theme-toggle .sun { display: none; }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--line); border-radius: 10px;
  width: 48px; height: 48px; cursor: pointer; padding: 0;
  place-items: center;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--gold-ink); margin: 3px auto; transition: transform 0.35s var(--ease); }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ── hero ────────────────────────────────────────── */
.hero {
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 7rem var(--pad) 0;
  position: relative;
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: var(--scrim-top), var(--scrim-hero);
}
.hero > * { position: relative; }
.hero-inner { max-width: var(--max); margin: 0 auto; width: 100%; padding-bottom: clamp(2rem, 7vh, 5rem); }
.kicker {
  font-size: 0.8rem; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--gold-ink); font-weight: 600; margin-bottom: 1.6rem;
}
.kicker-slogan {
  font-family: var(--serif); font-style: italic; font-weight: 400;
  letter-spacing: 0; text-transform: none; font-size: 1.05rem;
  display: block; margin-bottom: 0.9rem; color: var(--mut);
}
.display {
  font-family: var(--serif);
  font-size: clamp(2.9rem, 8.2vw, 7.2rem);
  font-weight: 400;
  font-variation-settings: "opsz" 144;
  line-height: 1.02;
  letter-spacing: -0.015em;
  color: var(--text);
  max-width: 14ch;
}
.display em, .sec-title em {
  font-style: italic; font-weight: 340;
  background: var(--accent-grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede {
  font-family: var(--serif); font-weight: 340;
  font-size: clamp(1.15rem, 2vw, 1.55rem);
  line-height: 1.5; color: var(--mut); max-width: 44ch;
  margin-top: 2rem;
}
.lede-small { font-size: clamp(1.05rem, 1.5vw, 1.25rem); max-width: 52ch; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.6rem; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 0.8rem 1.7rem; border-radius: 999px;
  font-family: var(--sans); font-size: 0.98rem; font-weight: 600; letter-spacing: 0.01em;
  text-decoration: none; cursor: pointer; border: 1px solid transparent;
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), border-color 0.35s, color 0.35s;
}
.btn:active { transform: scale(0.98); }
.btn-solid { background: linear-gradient(120deg, var(--champagne), var(--gold)); color: #191305; }
.btn-solid:hover { filter: brightness(1.05); }
.btn-ghost { border-color: var(--line); color: var(--gold-ink); background: transparent; }
.btn-ghost:hover { border-color: var(--gold); background: rgba(200, 156, 69, 0.1); }
.btn-line { border-color: var(--line); color: var(--text); background: transparent; }
.btn-line:hover { border-color: var(--gold); color: var(--gold-ink); }

.trust-strip {
  list-style: none; display: flex; flex-wrap: wrap;
  border-top: 1px solid var(--line);
  max-width: var(--max); margin: 0 auto; width: 100%;
  background: var(--strip-bg);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.trust-strip li {
  flex: 1 1 220px; padding: 1.3rem 1.5rem 1.6rem;
  font-size: 0.85rem; letter-spacing: 0.14em; text-transform: uppercase; font-weight: 600;
  color: var(--mut); border-left: 1px solid var(--line-soft);
}
.trust-strip li:first-child { border-left: none; padding-left: 0; }
.trust-strip li::before {
  content: ""; display: block; width: 26px; height: 1px;
  background: var(--gold); margin-bottom: 0.7rem;
}

/* ── bands & layout ──────────────────────────────── */
.band { background: var(--bg-2); border-top: 1px solid var(--line-soft); padding: clamp(4.5rem, 10vw, 9rem) var(--pad); position: relative; }
.band-dense { background: var(--bg); }
.wrap { max-width: var(--max); margin: 0 auto; }
.wrap-narrow { max-width: 980px; }

.interlude {
  height: clamp(90px, 16vh, 170px);
  display: flex; align-items: center; justify-content: center;
  background: transparent;
}
.interlude span { width: min(420px, 60vw); height: 1px; background: linear-gradient(90deg, transparent, var(--gold), transparent); }

.sec-kicker {
  font-size: 0.78rem; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--gold-ink); font-weight: 600; margin-bottom: 1.4rem;
}
.sec-title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(2.1rem, 4.6vw, 4.1rem);
  font-variation-settings: "opsz" 100;
  line-height: 1.06; letter-spacing: -0.01em; color: var(--text);
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
  max-width: 22ch;
}

/* ── principles ──────────────────────────────────── */
.principles {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.principle { padding: 2.2rem 1.8rem 0 0; }
.principle + .principle { border-left: 1px solid var(--line-soft); padding-left: 1.8rem; }
.principle h3 { font-family: var(--serif); font-weight: 500; font-size: 1.3rem; color: var(--gold-ink); margin-bottom: 0.8rem; }
.principle p { font-size: 0.95rem; color: var(--mut); }

/* ── offerings ───────────────────────────────────── */
.offerings { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }
.offering { border-top: 1px solid var(--line); padding-top: 1.6rem; position: relative; }
.off-num {
  font-family: var(--serif); font-size: 0.95rem; color: var(--gold-ink);
  display: block; margin-bottom: 1.1rem; font-feature-settings: "tnum";
}
.offering h3 { font-family: var(--serif); font-weight: 500; font-size: clamp(1.45rem, 2vw, 1.8rem); line-height: 1.2; color: var(--text); margin-bottom: 1rem; }
.offering p { color: var(--mut); font-size: 1rem; }
.off-tag { margin-top: 1.3rem; font-size: 0.88rem !important; color: var(--mut-2) !important; font-style: italic; font-family: var(--serif); }

/* ── use cases ───────────────────────────────────── */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line-soft); }
.case { padding: 1.9rem 1.7rem 2.1rem; border-top: 1px solid var(--line-soft); border-left: 1px solid var(--line-soft); margin: -1px 0 0 -1px; transition: background 0.4s var(--ease); }
.case:hover { background: rgba(200, 156, 69, 0.07); }
.case h3 { font-family: var(--serif); font-weight: 500; font-size: 1.18rem; color: var(--gold-ink); margin-bottom: 0.6rem; }
.case p { font-size: 0.9rem; line-height: 1.6; color: var(--mut); }

/* ── business cases ──────────────────────────────── */
.bc { display: grid; grid-template-columns: 200px 1fr; gap: 2.5rem; padding: 2.6rem 0; border-top: 1px solid var(--line); align-items: start; }
.bc-fig .num {
  font-family: var(--serif); font-weight: 400; font-variation-settings: "opsz" 144;
  font-size: clamp(2.4rem, 4vw, 3.6rem); line-height: 1; color: var(--gold-ink);
  font-feature-settings: "tnum"; white-space: nowrap;
}
.bc-body h3 { font-family: var(--serif); font-weight: 500; font-size: 1.5rem; color: var(--text); margin-bottom: 0.9rem; }
.bc-body p { color: var(--mut); font-size: 1.02rem; }
.bc-note { margin-top: 2rem; font-size: 0.85rem; color: var(--mut-2); font-style: italic; font-family: var(--serif); }

.prose p { text-align: justify; content-visibility: auto; contain-intrinsic-size: auto 8em; }
@supports not (text-align: justify) { .prose p { text-align: left; } }

/* ── pilots ──────────────────────────────────────── */
.pilots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.pilot {
  background: var(--panel); border: 1px solid var(--line-soft); border-radius: 4px;
  padding: 2.2rem 2rem 2.4rem; display: flex; flex-direction: column;
  transition: border-color 0.4s var(--ease);
}
.pilot:hover { border-color: var(--line); }
.pilot-feature { border-color: var(--gold); background: linear-gradient(180deg, rgba(200,156,69,0.10), rgba(200,156,69,0.02)), var(--panel); }
.pilot-time { font-size: 0.78rem; letter-spacing: 0.28em; text-transform: uppercase; color: var(--gold-ink); font-weight: 600; margin-bottom: 1rem; }
.pilot h3 { font-family: var(--serif); font-weight: 500; font-size: 1.65rem; color: var(--text); margin-bottom: 1rem; }
.pilot > p { color: var(--mut); font-size: 0.97rem; }
.pilot ul { list-style: none; margin: 1.5rem 0 2rem; flex: 1; }
.pilot li { padding: 0.55rem 0 0.55rem 1.4rem; position: relative; font-size: 0.92rem; color: var(--text); border-bottom: 1px solid var(--line-soft); }
.pilot li::before { content: ""; position: absolute; left: 0; top: 1.05rem; width: 7px; height: 7px; background: var(--gold); clip-path: polygon(50% 0, 100% 100%, 0 100%); }
.pilot .btn { align-self: flex-start; }

/* ── how we work ─────────────────────────────────── */
.loop { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; margin-bottom: 4rem; }
.loop-step { border-top: 1px solid var(--line); padding-top: 1.4rem; }
.loop-step span { font-family: var(--serif); font-size: 2.6rem; color: var(--gold-ink); font-variation-settings: "opsz" 144; display: block; line-height: 1; margin-bottom: 0.9rem; }
.loop-step h3 { font-family: var(--serif); font-weight: 500; font-size: 1.35rem; color: var(--text); margin-bottom: 0.6rem; }
.loop-step p { color: var(--mut); font-size: 0.95rem; }

.ladder { border: 1px solid var(--line-soft); border-radius: 4px; padding: 1.8rem 2rem 2rem; background: var(--panel-alpha); }
.ladder-title { font-size: 0.82rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--gold-ink); font-weight: 600; margin-bottom: 1.4rem; }
.ladder-steps { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; }
.ladder-steps li { border-left: 2px solid var(--gold); padding: 0.3rem 0 0.3rem 1rem; }
.ladder-steps b { display: block; font-family: var(--serif); font-size: 1.5rem; color: var(--gold-ink); font-weight: 500; font-feature-settings: "tnum"; }
.ladder-steps span { font-size: 0.85rem; color: var(--mut); }
.ladder-steps li:nth-child(1) { opacity: 0.55; }
.ladder-steps li:nth-child(2) { opacity: 0.7; }
.ladder-steps li:nth-child(3) { opacity: 0.82; }
.ladder-steps li:nth-child(4) { opacity: 0.92; }
.ladder-steps li:nth-child(5) { opacity: 1; }

/* ── people ──────────────────────────────────────── */
.people-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(2.5rem, 5vw, 5rem); align-items: center; }
.people-fig img { border-radius: 3px; border: 1px solid var(--line-soft); }
.people-fig figcaption { margin-top: 0.9rem; font-size: 0.85rem; color: var(--mut-2); font-style: italic; font-family: var(--serif); }
.people-copy .sec-title { margin-bottom: 1.8rem; }
.people-copy p { color: var(--mut); margin-bottom: 1.2rem; font-size: 1.05rem; }

/* ── contact ─────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(3rem, 6vw, 6rem); align-items: start; }
.contact-copy .sec-title { margin-bottom: 1.6rem; }
.telegram-card { margin-top: 3rem; border-top: 1px solid var(--line); padding-top: 1.8rem; }
.telegram-card h3 { font-family: var(--serif); font-weight: 500; font-size: 1.35rem; color: var(--text); margin-bottom: 0.6rem; }
.telegram-card p { color: var(--mut); font-size: 0.95rem; margin-bottom: 1.4rem; max-width: 36ch; }

.contact-form { background: var(--panel); border: 1px solid var(--line-soft); border-radius: 4px; padding: clamp(1.6rem, 3vw, 2.6rem); }
.field { margin-bottom: 1.3rem; }
.field label { display: block; font-size: 0.8rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold-ink); font-weight: 600; margin-bottom: 0.5rem; }
.field input, .field select, .field textarea {
  width: 100%; background: var(--bg); color: var(--text);
  border: 1px solid var(--line-soft); border-radius: 3px;
  font-family: var(--sans); font-size: 1rem; padding: 0.85rem 1rem;
  transition: border-color 0.3s;
  min-height: 48px;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--gold); outline: none; }
.field input.invalid, .field textarea.invalid { border-color: #B4552E; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-foot { display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; margin-top: 0.5rem; }
.draft-note { font-size: 0.82rem; color: var(--mut-2); font-style: italic; }
.form-note { margin-top: 1.1rem; font-size: 0.82rem; color: var(--mut-2); }
.form-status { margin-top: 1.2rem; padding: 1rem 1.2rem; border-radius: 3px; font-size: 0.95rem; }
.form-status.ok { background: var(--ok-bg); border: 1px solid var(--ok-line); color: var(--ok-text); }
.form-status.err { background: var(--err-bg); border: 1px solid var(--err-line); color: var(--err-text); }
.form-status a { color: var(--gold-ink); }

/* ── footer ──────────────────────────────────────── */
.site-foot { border-top: 1px solid var(--line-soft); padding: 3.5rem var(--pad) 3rem; background: var(--bg); }
.foot-grid { display: grid; grid-template-columns: 1.2fr 1fr 1.2fr; gap: 2.5rem; align-items: start; }
.foot-brand { display: flex; gap: 1rem; align-items: center; }
.foot-brand p { font-family: var(--serif); font-size: 1.15rem; color: var(--text); line-height: 1.35; }
.foot-brand span { font-size: 0.8rem; color: var(--mut-2); font-family: var(--sans); letter-spacing: 0.1em; text-transform: uppercase; }
.foot-slogan { font-family: var(--serif); font-style: italic; color: var(--gold-ink); font-size: 1.05rem; margin-top: 0.5rem; }
.foot-links { display: flex; flex-direction: column; gap: 0.7rem; font-size: 0.95rem; }
.foot-links a { text-decoration: none; }
.foot-links span { color: var(--mut-2); }
.foot-legal { font-size: 0.82rem; color: var(--mut-2); line-height: 1.7; text-align: right; }

/* ── reveals ─────────────────────────────────────── */
html.js [data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
html.js [data-reveal].in-view { opacity: 1; transform: none; }

::view-transition-old(root), ::view-transition-new(root) { animation-duration: 0.35s; }

/* ── responsive: tablet ──────────────────────────── */
@media (max-width: 1080px) {
  .principles { grid-template-columns: repeat(2, 1fr); }
  .principle + .principle { border-left: none; padding-left: 0; }
  .principle:nth-child(even) { border-left: 1px solid var(--line-soft); padding-left: 1.8rem; }
  .principle { padding-bottom: 2rem; }
  .offerings, .loop { grid-template-columns: 1fr; gap: 2.2rem; }
  .cases { grid-template-columns: repeat(2, 1fr); }
  .pilots { grid-template-columns: 1fr; }
  .people-grid, .contact-grid { grid-template-columns: 1fr; }
  .ladder-steps { grid-template-columns: repeat(3, 1fr); row-gap: 1.4rem; }
  .bc { grid-template-columns: 150px 1fr; gap: 1.8rem; }
  .foot-grid { grid-template-columns: 1fr; }
  .foot-legal { text-align: left; }
}

/* ── mobile nav breakpoint ───────────────────────── */
@media (max-width: 900px) {
  .site-nav {
    position: fixed; inset: 0; z-index: 99;
    background: var(--nav-overlay);
    backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
    flex-direction: column; justify-content: center; align-items: center; gap: 2.4rem;
    transform: translateY(-102%);
    visibility: hidden;
    transition: transform 0.55s var(--ease), visibility 0s 0.55s;
  }
  .site-nav.open {
    transform: none; visibility: visible;
    transition: transform 0.55s var(--ease), visibility 0s;
  }
  .site-nav a { font-size: 1.35rem; font-family: var(--serif); opacity: 1; }
  .nav-toggle { display: block; }
  .site-head::before { opacity: 1; }   /* readable bar under the controls */
  .site-head:not(.scrolled)::before { border-bottom-color: transparent; background: transparent; backdrop-filter: none; -webkit-backdrop-filter: none; }
}

/* ── responsive: mobile ──────────────────────────── */
@media (max-width: 720px) {
  .hero { padding-top: 6rem; }
  .trust-strip li { flex-basis: 50%; font-size: 0.75rem; }
  .trust-strip li:nth-child(3) { border-left: none; padding-left: 0; }
  .cases { grid-template-columns: 1fr; }
  .bc { grid-template-columns: 1fr; gap: 0.8rem; }
  .ladder-steps { grid-template-columns: 1fr 1fr; }
  .hero-ctas .btn { flex: 1 1 100%; }
}

/* ── reduced motion ──────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js [data-reveal] { opacity: 1; transform: none; transition: none; }
  .btn, .site-head, .site-head::before, .case, .pilot, body { transition: none; }
}