/* ===== Tokens ===== */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.75rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  /* Palette: blueprint ink, concrete paper, signal orange */
  --color-bg: #f3f2ee;
  --color-surface: #fafaf7;
  --color-surface-offset: #e9e8e2;
  --color-divider: #dcdad3;
  --color-border: #cfccc3;
  --color-text: #15212c;
  --color-text-muted: #5a6470;
  --color-text-faint: #8d949c;
  --color-text-inverse: #f3f2ee;

  --color-ink: #0f1a24;
  --color-ink-2: #172532;
  --color-ink-line: #2a3a49;
  --color-ink-muted: #9aa8b5;

  --color-primary: #b54c16;
  --color-primary-hover: #93390c;
  --color-primary-bright: #e8702e;
  --color-steel: #4f7590;
  --color-success: #3f7a3a;
  --color-error: #a3312b;

  --radius-sm: 2px; --radius-md: 4px; --radius-lg: 6px;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-md: 0 6px 18px oklch(0.2 0.02 240 / 0.08);

  --content-wide: 1240px;
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

/* ===== Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: none; text-size-adjust: none; -webkit-font-smoothing: antialiased; scroll-behavior: smooth; scroll-padding-top: var(--space-24); }
body { min-height: 100dvh; line-height: 1.6; font-family: var(--font-body); font-size: var(--text-base); color: var(--color-text); background: var(--color-bg); }
img, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'], ol[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.1; font-family: var(--font-display); font-weight: 700; letter-spacing: -0.015em; }
p, li { text-wrap: pretty; max-width: 68ch; }
a { color: inherit; }
::selection { background: color-mix(in oklab, var(--color-primary) 25%, transparent); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; }
button { cursor: pointer; background: none; border: none; }
a, button, input, textarea, select { transition: color var(--transition-interactive), background var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; } }

/* ===== Layout ===== */
.container { width: 100%; max-width: var(--content-wide); margin-inline: auto; padding-inline: clamp(var(--space-5), 4vw, var(--space-12)); }
.section { padding-block: clamp(var(--space-16), 9vw, var(--space-32)); }
.section--tight { padding-block: clamp(var(--space-12), 6vw, var(--space-20)); }
.section--ink { background: var(--color-ink); color: var(--color-text-inverse); }
.section--offset { background: var(--color-surface-offset); }

.eyebrow { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-primary); display: inline-flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-5); }
.eyebrow::before { content: ''; width: 24px; height: 2px; background: currentColor; }
.section--ink .eyebrow, .hero .eyebrow, .page-hero .eyebrow { color: var(--color-primary-bright); }

.section-head { display: grid; grid-template-columns: 1fr; gap: var(--space-6); margin-bottom: clamp(var(--space-10), 5vw, var(--space-16)); }
.section-head h2 { font-size: var(--text-2xl); max-width: 18ch; }
.section-head p { color: var(--color-text-muted); }
.section--ink .section-head p { color: var(--color-ink-muted); }
@media (min-width: 900px) { .section-head { grid-template-columns: 1.1fr 1fr; align-items: end; } }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; gap: var(--space-3); padding: var(--space-4) var(--space-6); font-size: var(--text-sm); font-weight: 700; text-decoration: none; border-radius: var(--radius-sm); border: 1.5px solid transparent; line-height: 1.2; }
.btn svg { width: 18px; height: 18px; transition: transform var(--transition-interactive); }
.btn:hover svg { transform: translateX(3px); }
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-hover); }
.btn--ghost { border-color: currentColor; }
.btn--ghost:hover { background: color-mix(in oklab, currentColor 10%, transparent); }
.btn--light { background: var(--color-text-inverse); color: var(--color-ink); }
.btn--light:hover { background: #fff; }
.link-arrow { font-weight: 700; font-size: var(--text-sm); color: var(--color-primary); text-decoration: none; display: inline-flex; gap: var(--space-2); align-items: center; }
.link-arrow:hover { text-decoration: underline; text-underline-offset: 4px; }
.section--ink .link-arrow { color: var(--color-primary-bright); }

/* ===== Header ===== */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in oklab, var(--color-ink) 94%, transparent); backdrop-filter: blur(10px); color: var(--color-text-inverse); border-bottom: 1px solid var(--color-ink-line); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: var(--space-6); }
.brand { display: inline-flex; align-items: center; gap: var(--space-3); text-decoration: none; }
.brand-mark { font-family: var(--font-display); font-weight: 800; font-size: 1.375rem; letter-spacing: -0.02em; }
.brand-mark span { color: var(--color-primary-bright); }
.brand-sub { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-ink-muted); padding-left: var(--space-3); border-left: 1px solid var(--color-ink-line); }
.nav { display: flex; align-items: center; gap: var(--space-8); }
.nav ul { display: flex; gap: var(--space-6); }
.nav a { font-size: var(--text-sm); text-decoration: none; color: var(--color-ink-muted); font-weight: 500; padding-block: var(--space-2); border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--color-text-inverse); }
.nav a[aria-current='page'] { color: var(--color-text-inverse); border-bottom-color: var(--color-primary-bright); }
.nav .btn { padding: var(--space-3) var(--space-5); color: #fff; border: none; }
.nav-toggle { display: none; color: var(--color-text-inverse); padding: var(--space-2); }
.nav-toggle svg { width: 26px; height: 26px; }
@media (max-width: 860px) {
  .brand-sub { display: none; }
  .nav-toggle { display: block; }
  .nav { position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--color-ink); padding: var(--space-4) var(--space-5) var(--space-8); border-bottom: 1px solid var(--color-ink-line); transform: translateY(-8px); opacity: 0; visibility: hidden; transition: opacity 200ms, transform 200ms, visibility 200ms; }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav ul { flex-direction: column; gap: 0; }
  .nav a { display: block; padding: var(--space-4) 0; font-size: var(--text-base); border-bottom: 1px solid var(--color-ink-line); }
  .nav a[aria-current='page'] { border-bottom-color: var(--color-ink-line); color: var(--color-primary-bright); }
  .nav .btn { margin-top: var(--space-6); justify-content: center; border-bottom: none; }
}

/* ===== Home hero ===== */
.hero { position: relative; background: var(--color-ink); color: var(--color-text-inverse); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.42; }
.hero-bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(100deg, var(--color-ink) 18%, color-mix(in oklab, var(--color-ink) 70%, transparent) 55%, color-mix(in oklab, var(--color-ink) 30%, transparent)); }
.hero .container { position: relative; display: grid; gap: var(--space-12); padding-block: clamp(var(--space-16), 10vw, var(--space-32)); align-items: center; }
@media (min-width: 1040px) { .hero .container { grid-template-columns: 1.05fr 1fr; min-height: calc(88vh - 72px); } }
.hero h1 { font-size: var(--text-3xl); font-weight: 800; letter-spacing: -0.025em; max-width: 14ch; }
.hero h1 em { font-style: normal; color: var(--color-primary-bright); }
.hero-lede { margin-top: var(--space-6); color: #c9d2da; max-width: 52ch; }
.hero-actions { margin-top: var(--space-10); display: flex; flex-wrap: wrap; gap: var(--space-4); }
.hero-tools { margin-top: var(--space-12); display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-6); font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-ink-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.hero-tools span::before { content: '▸ '; color: var(--color-primary-bright); }

/* ===== Gantt panel (signature element) ===== */
.gantt { background: color-mix(in oklab, var(--color-ink-2) 92%, transparent); border: 1px solid var(--color-ink-line); border-radius: var(--radius-lg); font-family: var(--font-mono); font-size: 0.75rem; color: #c9d2da; box-shadow: 0 30px 60px oklch(0 0 0 / 0.35); backdrop-filter: blur(6px); }
.gantt-top { display: flex; justify-content: space-between; align-items: center; padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-ink-line); color: var(--color-ink-muted); gap: var(--space-4); }
.gantt-top strong { color: var(--color-text-inverse); font-weight: 600; }
.gantt-legend { display: flex; gap: var(--space-4); }
.gantt-legend i { display: inline-block; width: 10px; height: 10px; margin-right: 6px; vertical-align: -1px; border-radius: 1px; }
.gantt-body { position: relative; padding: var(--space-3) var(--space-4) var(--space-4); }
.gantt-scale, .gantt-row { display: grid; grid-template-columns: 9.5rem 1fr; align-items: center; gap: var(--space-3); }
.gantt-scale { color: var(--color-ink-muted); padding-bottom: var(--space-2); border-bottom: 1px dashed var(--color-ink-line); margin-bottom: var(--space-2); }
.gantt-months { display: grid; grid-template-columns: repeat(12, 1fr); }
.gantt-row { height: 30px; }
.gantt-row .label { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gantt-row.is-group .label { color: var(--color-text-inverse); font-weight: 600; }
.gantt-track { position: relative; height: 100%; background-image: repeating-linear-gradient(90deg, transparent 0 calc(100%/12 - 1px), color-mix(in oklab, var(--color-ink-line) 60%, transparent) calc(100%/12 - 1px) calc(100%/12)); }
.bar { position: absolute; top: 9px; height: 12px; border-radius: 2px; background: var(--color-steel); transform-origin: left; animation: grow 900ms cubic-bezier(0.16,1,0.3,1) both; }
.bar.crit { background: var(--color-primary-bright); }
.bar.group { top: 12px; height: 6px; background: #d7dee4; }
.bar.done::after { content: ''; position: absolute; inset: 0; width: var(--pct, 100%); background: repeating-linear-gradient(135deg, oklch(1 0 0 / 0.35) 0 3px, transparent 3px 6px); border-radius: 2px; }
.ms { position: absolute; top: 8px; width: 13px; height: 13px; background: var(--color-text-inverse); transform: rotate(45deg); margin-left: -6px; }
.datadate { position: absolute; top: 0; bottom: 0; width: 0; border-left: 1.5px solid var(--color-primary-bright); pointer-events: none; }
.datadate span { position: absolute; bottom: 6px; left: 6px; background: var(--color-primary-bright); color: var(--color-ink); padding: 0 6px; border-radius: 2px; font-weight: 600; white-space: nowrap; }
.gantt-foot { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--color-ink-line); }
.gantt-foot div { padding: var(--space-3) var(--space-4); border-right: 1px solid var(--color-ink-line); }
.gantt-foot div:last-child { border-right: 0; }
.gantt-foot b { display: block; font-family: var(--font-display); font-size: 1.25rem; color: var(--color-text-inverse); font-weight: 700; }
@keyframes grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@media (max-width: 520px) {
  .gantt-scale, .gantt-row { grid-template-columns: 6.5rem 1fr; }
  .gantt-legend { display: none; }
  .gantt-months span:nth-child(even) { visibility: hidden; }
}

/* ===== Value strip ===== */
.strip { background: var(--color-ink-2); color: var(--color-text-inverse); border-top: 1px solid var(--color-ink-line); }
.strip .container { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.strip-item { padding: var(--space-8) var(--space-6); border-left: 1px solid var(--color-ink-line); }
.strip-item:first-child { border-left: 0; padding-left: 0; }
.strip-item .k { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-primary-bright); letter-spacing: 0.06em; }
.strip-item h3 { font-family: var(--font-body); font-size: var(--text-base); margin-top: var(--space-2); font-weight: 700; letter-spacing: 0; }
.strip-item p { font-size: var(--text-sm); color: var(--color-ink-muted); margin-top: var(--space-1); }
@media (max-width: 960px) { .strip-item { border-left: 0; padding-left: 0; border-top: 1px solid var(--color-ink-line); } .strip-item:first-child { border-top: 0; } }

/* ===== Service cards ===== */
.svc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); border-top: 1px solid var(--color-border); border-left: 1px solid var(--color-border); }
.svc { position: relative; padding: var(--space-8); border-right: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); background: var(--color-surface); display: flex; flex-direction: column; gap: var(--space-3); text-decoration: none; }
a.svc:hover { background: #fff; }
a.svc:hover .svc-num { color: var(--color-primary); }
.svc-num { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint); }
.svc h3 { font-size: var(--text-lg); }
.svc p { color: var(--color-text-muted); font-size: var(--text-sm); }
.svc .link-arrow { margin-top: auto; padding-top: var(--space-4); }

/* ===== Split / feature ===== */
.split { display: grid; gap: clamp(var(--space-10), 6vw, var(--space-20)); align-items: center; }
@media (min-width: 960px) { .split { grid-template-columns: 1fr 1fr; } .split--reverse > :first-child { order: 2; } }
.split h2 { font-size: var(--text-2xl); max-width: 16ch; margin-bottom: var(--space-6); }
.split p + p { margin-top: var(--space-4); }
.split .muted { color: var(--color-text-muted); }
.section--ink .split .muted { color: var(--color-ink-muted); }
.figure { position: relative; }
.figure img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius-md); }
.figure-tag { position: absolute; left: var(--space-4); bottom: var(--space-4); background: var(--color-ink); color: var(--color-text-inverse); font-family: var(--font-mono); font-size: var(--text-xs); padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm); }
.checklist { margin-top: var(--space-8); display: grid; gap: var(--space-3); }
.checklist li { display: grid; grid-template-columns: 22px 1fr; gap: var(--space-3); align-items: start; }
.checklist li::before { content: ''; width: 14px; height: 14px; margin-top: 0.35em; border: 2px solid var(--color-primary); transform: rotate(45deg) scale(0.8); }
.section--ink .checklist li::before { border-color: var(--color-primary-bright); }

/* ===== Industries ===== */
.ind-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--color-ink-line); border: 1px solid var(--color-ink-line); }
.ind { background: var(--color-ink); padding: var(--space-6); min-height: 150px; display: flex; flex-direction: column; justify-content: space-between; gap: var(--space-6); }
@media (max-width: 900px) { .ind-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .ind-grid { grid-template-columns: 1fr; } }
.ind .k { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-ink-muted); }
.ind h3 { font-family: var(--font-body); font-size: var(--text-base); font-weight: 700; letter-spacing: 0; }
.ind p { font-size: var(--text-sm); color: var(--color-ink-muted); margin-top: var(--space-1); }

/* ===== Process ===== */
.process { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); counter-reset: step; }
.step { position: relative; padding: var(--space-8) var(--space-6) var(--space-6) 0; border-top: 2px solid var(--color-border); }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); position: absolute; top: -2px; left: 0; padding-top: var(--space-3); font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-primary); border-top: 2px solid var(--color-primary); width: 48px; }
.step h3 { font-family: var(--font-body); font-size: var(--text-lg); margin-top: var(--space-3); letter-spacing: 0; }
.step p { margin-top: var(--space-2); color: var(--color-text-muted); font-size: var(--text-sm); }

/* ===== Full-bleed image band ===== */
.band { position: relative; min-height: 440px; display: flex; align-items: flex-end; color: var(--color-text-inverse); overflow: hidden; }
.band img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.band::after { content: ''; position: absolute; inset: 0; background: linear-gradient(0deg, color-mix(in oklab, var(--color-ink) 92%, transparent), transparent 75%); }
.band .container { position: relative; z-index: 1; padding-block: var(--space-16); }
.band blockquote { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 700; max-width: 26ch; line-height: 1.2; letter-spacing: -0.01em; }
.band cite { display: block; margin-top: var(--space-4); font-style: normal; font-family: var(--font-mono); font-size: var(--text-xs); color: #c9d2da; text-transform: uppercase; letter-spacing: 0.06em; }

/* ===== CTA ===== */
.cta { background: var(--color-primary); color: #fff; }
.cta .container { display: grid; gap: var(--space-8); padding-block: clamp(var(--space-12), 7vw, var(--space-24)); align-items: center; }
@media (min-width: 900px) { .cta .container { grid-template-columns: 1.4fr auto; } }
.cta h2 { font-size: var(--text-2xl); max-width: 20ch; }
.cta p { margin-top: var(--space-4); color: #fde3d3; }
.cta .btn--light { color: var(--color-primary-hover); }

/* ===== Page hero (interior) ===== */
.page-hero { background: var(--color-ink); color: var(--color-text-inverse); position: relative; overflow: hidden; }
.page-hero::before { content: ''; position: absolute; inset: 0; background-image: linear-gradient(var(--color-ink-line) 1px, transparent 1px), linear-gradient(90deg, var(--color-ink-line) 1px, transparent 1px); background-size: 48px 48px; opacity: 0.35; mask-image: linear-gradient(90deg, transparent, #000 70%); }
.page-hero .container { position: relative; padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }
.crumbs { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-ink-muted); margin-bottom: var(--space-6); }
.crumbs a { text-decoration: none; } .crumbs a:hover { color: var(--color-text-inverse); }
.page-hero h1 { font-size: var(--text-2xl); max-width: 20ch; font-weight: 800; }
.page-hero p { margin-top: var(--space-5); color: #c9d2da; max-width: 58ch; }
.subnav { margin-top: var(--space-10); display: flex; flex-wrap: wrap; gap: var(--space-3); }
.subnav a { font-size: var(--text-sm); text-decoration: none; padding: var(--space-2) var(--space-4); border: 1px solid var(--color-ink-line); border-radius: var(--radius-sm); color: #c9d2da; }
.subnav a:hover { border-color: var(--color-primary-bright); color: #fff; }

/* ===== Services detail ===== */
.svc-detail { display: grid; gap: var(--space-8); padding-block: clamp(var(--space-10), 5vw, var(--space-16)); border-top: 1px solid var(--color-border); }
.svc-detail:first-of-type { border-top: 0; padding-top: 0; }
@media (min-width: 900px) { .svc-detail { grid-template-columns: 0.9fr 1.3fr; gap: var(--space-16); } }
.svc-detail .svc-num { display: block; margin-bottom: var(--space-3); }
.svc-detail h3 { font-size: var(--text-xl); }
.svc-detail .intro { color: var(--color-text-muted); margin-top: var(--space-4); }
.deliverables { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: var(--space-6) var(--space-8); }
.deliverables h4 { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-faint); font-weight: 500; margin-bottom: var(--space-3); }
.deliverables ul { display: grid; gap: var(--space-2); font-size: var(--text-sm); }
.deliverables li { padding-left: var(--space-5); position: relative; }
.deliverables li::before { content: ''; position: absolute; left: 0; top: 0.62em; width: 8px; height: 2px; background: var(--color-primary); }
.group-title { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-12); padding-bottom: var(--space-5); border-bottom: 2px solid var(--color-text); }
.group-title h2 { font-size: var(--text-2xl); }
.group-title span { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-muted); }

/* Engagement cards */
.eng-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: var(--space-6); }
.eng { background: var(--color-ink-2); border: 1px solid var(--color-ink-line); border-radius: var(--radius-md); padding: var(--space-8); display: flex; flex-direction: column; gap: var(--space-4); }
.eng .tag { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-primary-bright); text-transform: uppercase; letter-spacing: 0.06em; }
.eng h3 { font-size: var(--text-lg); }
.eng p { color: var(--color-ink-muted); font-size: var(--text-sm); }
.eng ul { margin-top: var(--space-2); display: grid; gap: var(--space-2); font-size: var(--text-sm); border-top: 1px solid var(--color-ink-line); padding-top: var(--space-4); }
.eng li::before { content: '— '; color: var(--color-primary-bright); }

/* FAQ */
.faq { border-top: 1px solid var(--color-border); }
.faq details { border-bottom: 1px solid var(--color-border); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: var(--space-6); padding: var(--space-6) 0; font-weight: 700; font-size: var(--text-base); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-family: var(--font-mono); color: var(--color-primary); font-size: 1.25rem; line-height: 1; transition: transform 200ms; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { color: var(--color-primary); }
.faq details p { padding-bottom: var(--space-6); color: var(--color-text-muted); }

/* ===== About ===== */
.principles { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); gap: var(--space-10) var(--space-8); }
.principle { border-left: 2px solid var(--color-primary); padding-left: var(--space-5); }
.principle h3 { font-family: var(--font-body); font-size: var(--text-lg); letter-spacing: 0; }
.principle p { margin-top: var(--space-2); color: var(--color-text-muted); font-size: var(--text-sm); }
.sides { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 1px; background: var(--color-ink-line); border: 1px solid var(--color-ink-line); }
.side { background: var(--color-ink); padding: var(--space-8); }
.side .tag { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-primary-bright); text-transform: uppercase; letter-spacing: 0.06em; }
.side h3 { font-size: var(--text-lg); margin-top: var(--space-3); }
.side p { margin-top: var(--space-3); color: var(--color-ink-muted); font-size: var(--text-sm); }

/* ===== Contact ===== */
.contact-grid { display: grid; gap: clamp(var(--space-10), 5vw, var(--space-16)); align-items: start; }
@media (min-width: 980px) { .contact-grid { grid-template-columns: 1.5fr 1fr; } }
.form { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: clamp(var(--space-6), 4vw, var(--space-10)); }
.form h2 { font-size: var(--text-xl); }
.form > p { color: var(--color-text-muted); margin-top: var(--space-2); font-size: var(--text-sm); }
.fieldset { border: 0; margin-top: var(--space-8); }
.fieldset legend { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-primary); margin-bottom: var(--space-4); padding-bottom: var(--space-2); border-bottom: 1px solid var(--color-divider); width: 100%; }
.fields { display: grid; gap: var(--space-5); }
@media (min-width: 640px) { .fields--2 { grid-template-columns: 1fr 1fr; } }
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field label, .field .label { font-size: var(--text-sm); font-weight: 700; }
.field label .opt { font-weight: 400; color: var(--color-text-faint); }
.field input, .field select, .field textarea { width: 100%; padding: var(--space-3) var(--space-4); background: #fff; border: 1.5px solid var(--color-border); border-radius: var(--radius-sm); font-size: var(--text-base); }
.field textarea { min-height: 140px; resize: vertical; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--color-text-faint); }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary) 18%, transparent); }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--color-error); }
.field .err { font-size: var(--text-xs); color: var(--color-error); display: none; }
.field.has-error .err { display: block; }
.chips { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.chip span { display: inline-block; padding: var(--space-2) var(--space-4); border: 1.5px solid var(--color-border); border-radius: var(--radius-sm); font-size: var(--text-sm); background: #fff; cursor: pointer; transition: all var(--transition-interactive); }
.chip input:hover + span { border-color: var(--color-text-faint); }
.chip input:checked + span { background: var(--color-ink); color: #fff; border-color: var(--color-ink); }
.chip input:focus-visible + span { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.form-actions { margin-top: var(--space-8); display: flex; flex-wrap: wrap; gap: var(--space-4); align-items: center; justify-content: space-between; }
.form-actions small { color: var(--color-text-muted); font-size: var(--text-xs); max-width: 40ch; }
.form-success { display: none; text-align: left; padding: var(--space-10) 0; }
.form-success h2 { font-size: var(--text-xl); margin-top: var(--space-4); }
.form-success p { margin-top: var(--space-3); color: var(--color-text-muted); }
.form-success .badge { width: 48px; height: 48px; border-radius: 50%; background: var(--color-success); display: grid; place-items: center; color: #fff; }
.form.is-sent .form-body { display: none; }
.form.is-sent .form-success { display: block; }

.aside { display: grid; gap: var(--space-6); }
.aside-card { background: var(--color-ink); color: var(--color-text-inverse); border-radius: var(--radius-md); padding: var(--space-8); }
.aside-card h3 { font-size: var(--text-lg); }
.aside-card dl { margin-top: var(--space-6); display: grid; gap: var(--space-5); }
.aside-card dt { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-ink-muted); }
.aside-card dd { margin-top: var(--space-1); }
.aside-card dd a { text-decoration: none; border-bottom: 1px solid var(--color-ink-line); }
.aside-card dd a:hover { border-color: var(--color-primary-bright); }
.next-steps { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-8); background: var(--color-surface); }
.next-steps h3 { font-size: var(--text-lg); }
.next-steps ol { margin-top: var(--space-5); display: grid; gap: var(--space-4); counter-reset: n; }
.next-steps li { display: grid; grid-template-columns: 32px 1fr; gap: var(--space-3); font-size: var(--text-sm); color: var(--color-text-muted); }
.next-steps li::before { counter-increment: n; content: counter(n, decimal-leading-zero); font-family: var(--font-mono); color: var(--color-primary); font-weight: 600; }
.next-steps li b { color: var(--color-text); display: block; }

/* ===== Footer ===== */
.site-footer { background: var(--color-ink); color: var(--color-ink-muted); font-size: var(--text-sm); }
.site-footer .container { padding-block: var(--space-16) var(--space-8); }
.footer-top { display: grid; gap: var(--space-10); grid-template-columns: 1fr; padding-bottom: var(--space-12); border-bottom: 1px solid var(--color-ink-line); }
@media (min-width: 860px) { .footer-top { grid-template-columns: 1.5fr 1fr 1fr 1fr; } }
.footer-top .brand { color: var(--color-text-inverse); }
.footer-top p { margin-top: var(--space-4); max-width: 36ch; }
.footer-top h4 { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-inverse); font-weight: 500; margin-bottom: var(--space-4); }
.footer-top ul { display: grid; gap: var(--space-2); }
.footer-top a { text-decoration: none; } .footer-top a:hover { color: var(--color-text-inverse); }
.footer-bottom { padding-top: var(--space-6); display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-4); font-size: var(--text-xs); }

/* Reveal */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity 700ms cubic-bezier(0.16,1,0.3,1), transform 700ms cubic-bezier(0.16,1,0.3,1); }
.js .reveal.is-in { opacity: 1; transform: none; }