/* =========================================================
   Tokens — "drafting office": paper, ink, cobalt + rust
   ========================================================= */
:root {
  --paper:        #F6F4EF;
  --paper-raised: #FFFFFF;
  --ink:          #1C2024;
  --ink-soft:     #3F4750;
  --ink-muted:    #767E88;

  --line:         #DEDAD2;
  --line-strong:  #C7C1B5;

  --cobalt:       #29445F;
  --cobalt-soft:  rgba(41, 68, 95, 0.07);

  --rust:         #C75B26;
  --rust-soft:    rgba(199, 91, 38, 0.10);

  --font-display: 'IBM Plex Serif', Georgia, serif;
  --font-body:    'IBM Plex Sans', Arial, sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;

  --radius: 2px;
  --container: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
svg { width: 1em; height: 1em; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 8px 16px;
  z-index: 200;
}
.skip-link:focus { left: 8px; top: 8px; }

:focus-visible { outline: 2px solid var(--cobalt); outline-offset: 2px; }

/* =========================================================
   Layout helpers
   ========================================================= */
.wrap {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section-tight { padding: 64px 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cobalt);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 1px;
  background: var(--cobalt);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}

h1 { font-size: clamp(2.2rem, 4.2vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 2.8vw, 2.25rem); }
h3 { font-size: 1.1rem; font-weight: 600; }

.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head p { color: var(--ink-muted); margin-top: 14px; font-size: 1.05rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn:hover { background: var(--ink); color: var(--paper); }

.btn-accent {
  background: var(--rust);
  border-color: var(--rust);
  color: var(--paper-raised);
  font-weight: 600;
}
.btn-accent:hover { background: #B14E1C; border-color: #B14E1C; color: var(--paper-raised); }

.btn svg { width: 16px; height: 16px; }

/* =========================================================
   Header
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 244, 239, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--ink);
}
.logo-mark { width: 26px; height: 26px; color: var(--cobalt); flex-shrink: 0; }
.logo-mark svg { width: 100%; height: 100%; }

.site-nav { display: flex; gap: 36px; font-size: 0.95rem; font-weight: 500; }
.site-nav a {
  color: var(--ink-soft);
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.site-nav a:hover { color: var(--cobalt); border-color: var(--cobalt); }

.header-actions { display: flex; align-items: center; gap: 22px; }

.header-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-muted);
}
.header-phone svg { width: 15px; height: 15px; color: var(--cobalt); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  cursor: pointer;
}
.nav-toggle svg { width: 20px; height: 20px; }

/* =========================================================
   Hero
   ========================================================= */
.hero { padding: 80px 0 96px; }

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 72px;
  align-items: start;
}

.hero h1 { margin-bottom: 22px; }
.hero h1 .accent { color: var(--cobalt); }

.hero-lede {
  color: var(--ink-muted);
  font-size: 1.1rem;
  max-width: 480px;
  margin-bottom: 32px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }

.hero-trust {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.hero-trust strong { color: var(--ink); font-weight: 500; }

/* =========================================================
   Title block (signature element)
   ========================================================= */
.titleblock {
  border: 1.5px solid var(--ink);
  background: var(--paper-raised);
}

.tb-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 14px 20px;
  border-bottom: 1.5px solid var(--ink);
  color: var(--ink-muted);
}
.tb-header .tb-id { color: var(--cobalt); }

.tb-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.tb-field {
  padding: 22px 20px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.tb-grid .tb-field:nth-child(2n) { border-right: none; }
.tb-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 8px;
}
.tb-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--ink);
}

.tb-items { padding: 4px 20px; }
.tb-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}
.tb-row:last-child { border-bottom: none; }
.tb-row .label { color: var(--ink-muted); }
.tb-row .value { font-family: var(--font-mono); color: var(--ink); }

.tb-footer {
  padding: 14px 20px;
  border-top: 1.5px solid var(--ink);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: flex;
  justify-content: space-between;
}
.tb-footer .tb-stamp { color: var(--rust); }

/* =========================================================
   Service category grid
   ========================================================= */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}
.category-card {
  background: var(--paper-raised);
  padding: 32px 28px;
  border-top: 3px solid var(--cobalt);
}
.category-code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--ink-muted);
  margin-bottom: 22px;
}
.category-icon {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  color: var(--cobalt);
  margin-bottom: 18px;
}
.category-icon svg { width: 26px; height: 26px; }
.category-card h3 { margin-bottom: 10px; }
.category-card p { color: var(--ink-muted); font-size: 0.93rem; margin-bottom: 18px; }
.category-card a.more {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--rust);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.category-card a.more svg { width: 14px; height: 14px; transition: transform 0.15s ease; }
.category-card a.more:hover svg { transform: translateX(3px); }

/* =========================================================
   Why us / features
   ========================================================= */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.feature { background: var(--paper); padding: 28px 24px; }
.feature-icon { color: var(--rust); margin-bottom: 16px; }
.feature-icon svg { width: 22px; height: 22px; }
.feature h3 { margin-bottom: 8px; font-size: 1rem; }
.feature p { color: var(--ink-muted); font-size: 0.9rem; }

/* =========================================================
   Trust logos
   ========================================================= */
.trust-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.trust-strip span {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
}

/* =========================================================
   Testimonials
   ========================================================= */
.testimonials { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px 48px; }
.testimonial { border-left: 2px solid var(--cobalt); padding-left: 24px; }
.testimonial p {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 14px;
}
.testimonial .author {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

/* =========================================================
   FAQ accordion
   ========================================================= */
.faq-list { border-top: 1px solid var(--line); max-width: 760px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  text-align: left;
  background: none;
  border: none;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  padding: 24px 4px;
  cursor: pointer;
}
.faq-question svg {
  width: 16px; height: 16px;
  color: var(--cobalt);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}
.faq-item.open .faq-question svg { transform: rotate(45deg); }

.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.25s ease; }
.faq-answer p { color: var(--ink-muted); font-size: 0.96rem; padding: 0 4px 24px; max-width: 640px; }

/* =========================================================
   CTA band — inverted for contrast
   ========================================================= */
.cta-band {
  background: var(--ink);
  color: var(--paper);
  text-align: center;
  padding: 96px 0;
}
.cta-band h2 { color: var(--paper); margin-bottom: 14px; }
.cta-band p { color: #A9AFB6; max-width: 480px; margin: 0 auto 32px; }
.cta-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.cta-band .btn { border-color: var(--paper); color: var(--paper); }
.cta-band .btn:hover { background: var(--paper); color: var(--ink); }
.cta-band .btn-accent { border-color: var(--rust); }

/* =========================================================
   Footer
   ========================================================= */
.site-footer { background: var(--paper-raised); border-top: 1px solid var(--line); padding-top: 64px; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; }
.footer-brand p { color: var(--ink-muted); font-size: 0.9rem; margin: 16px 0 20px; max-width: 280px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--ink-soft);
}
.footer-social a:hover { color: var(--cobalt); border-color: var(--cobalt); }
.footer-social svg { width: 16px; height: 16px; }

.footer-col h3 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-muted);
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-weight: 500;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--ink-soft); font-size: 0.92rem; }
.footer-col ul li a:hover { color: var(--cobalt); }

.footer-contact li { display: flex; align-items: flex-start; gap: 10px; color: var(--ink-soft); font-size: 0.92rem; }
.footer-contact svg { width: 16px; height: 16px; color: var(--cobalt); flex-shrink: 0; margin-top: 2px; }
.footer-contact a { display: flex; align-items: flex-start; gap: 10px; color: var(--ink-soft); }
.footer-contact a:hover { color: var(--cobalt); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line);
  padding: 24px 0;
  font-size: 0.82rem;
  color: var(--ink-muted);
}
.footer-bottom a { color: var(--ink-muted); }
.footer-bottom a:hover { color: var(--cobalt); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .site-nav {
    position: absolute;
    top: 80px; left: 0; right: 0;
    background: var(--paper-raised);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
    display: none;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .header-phone { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .btn-accent { display: none; }

  .category-grid { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .testimonials { grid-template-columns: 1fr; }
  .tb-grid { grid-template-columns: 1fr; }
  .tb-grid .tb-field { border-right: none; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

/* =========================================================
   Breadcrumbs
   ========================================================= */
.breadcrumbs {
  border-bottom: 1px solid var(--line);
  background: var(--paper-raised);
}
.breadcrumbs ol {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 12px 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
}
.breadcrumbs li { display: flex; align-items: center; gap: 6px; }
.breadcrumbs a { color: var(--ink-muted); }
.breadcrumbs a:hover { color: var(--cobalt); }
.breadcrumbs .sep { width: 12px; height: 12px; color: var(--line-strong); }
.breadcrumbs [aria-current] { color: var(--ink); }

/* =========================================================
   Section rhythm
   ========================================================= */
.section, .section-tight { border-top: 1px solid var(--line); }
.hero { border-top: none; }

/* =========================================================
   Highlight bar (homepage key factors)
   ========================================================= */
.highlight-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.highlight-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line-strong);
  padding: 9px 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
}
.highlight-tag svg { width: 15px; height: 15px; color: var(--rust); }

/* =========================================================
   Illustration frame
   ========================================================= */
.illus-frame {
  border: 1.5px solid var(--ink);
  background: var(--paper-raised);
  color: var(--cobalt);
}
.illus-frame .tb-header { color: var(--ink-muted); }
.illus-frame .illus-body { padding: 24px; }
.illus-frame .illus-body svg { width: 100%; height: auto; display: block; }

/* =========================================================
   Page hero (inner pages)
   ========================================================= */
.page-hero { padding: 56px 0 88px; }
.page-hero .hero-inner { align-items: center; }
.page-hero h1 { margin-bottom: 18px; }
.page-hero .hero-lede { margin-bottom: 0; }
.page-hero.no-illus .hero-inner { grid-template-columns: 1fr; }
.page-hero.no-illus .hero-lede { max-width: 720px; }

/* =========================================================
   Scope list
   ========================================================= */
.scope-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 32px;
}
.scope-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.scope-item svg { width: 18px; height: 18px; color: var(--cobalt); flex-shrink: 0; margin-top: 2px; }
.scope-item p { margin: 0; font-size: 0.96rem; }
.scope-item strong { font-weight: 600; }

/* =========================================================
   Process steps
   ========================================================= */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.process-step { background: var(--paper-raised); padding: 26px 22px; }
.process-step .step-code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--cobalt);
  margin-bottom: 14px;
  display: block;
}
.process-step h3 { margin-bottom: 8px; font-size: 1rem; }
.process-step p { color: var(--ink-muted); font-size: 0.9rem; }

/* =========================================================
   Forms (contact page)
   ========================================================= */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-grid .field-wide { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.field input,
.field select,
.field textarea {
  font-family: var(--font-body);
  font-size: 0.96rem;
  color: var(--ink);
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 12px 14px;
  width: 100%;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--cobalt);
}
.form-note {
  margin-top: 18px;
  font-size: 0.85rem;
  color: var(--ink-muted);
}
.form-success {
  border: 1.5px solid var(--cobalt);
  background: var(--cobalt-soft);
  color: var(--ink);
  padding: 16px 20px;
  margin-bottom: 24px;
  font-size: 0.95rem;
}

/* =========================================================
   Contact info cards
   ========================================================= */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-info .item { display: flex; gap: 14px; align-items: flex-start; }
.contact-info .item svg { width: 20px; height: 20px; color: var(--cobalt); flex-shrink: 0; margin-top: 3px; }
.contact-info .item h3 { font-size: 0.95rem; margin-bottom: 4px; }
.contact-info .item p, .contact-info .item a { color: var(--ink-muted); font-size: 0.92rem; }
.contact-info .item a:hover { color: var(--cobalt); }

/* =========================================================
   Long-form prose (privacy policy, etc.)
   ========================================================= */
.prose { max-width: 760px; }
.prose h2 { margin: 40px 0 14px; font-size: 1.3rem; }
.prose h2:first-child { margin-top: 0; }
.prose p { color: var(--ink-soft); margin-bottom: 14px; }
.prose ul { margin: 0 0 14px 0; padding-left: 22px; list-style: disc; color: var(--ink-soft); }
.prose li { margin-bottom: 6px; }

/* =========================================================
   404 page
   ========================================================= */
.error-page { text-align: center; padding: 110px 0; }
.error-page .eyebrow { justify-content: center; }
.error-page .eyebrow::before { display: none; }
.error-page h1 { margin-bottom: 14px; }
.error-page p { color: var(--ink-muted); margin-bottom: 28px; }
.error-page .hero-actions { justify-content: center; }

/* =========================================================
   Project list
   ========================================================= */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.project-card { background: var(--paper-raised); padding: 28px; }
.project-meta {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: flex;
  justify-content: space-between;
  margin-bottom: 14px;
}
.project-meta .scope-tag { color: var(--cobalt); }
.project-card h3 { margin-bottom: 8px; }
.project-card p { color: var(--ink-muted); font-size: 0.93rem; }

/* =========================================================
   Responsive — additional rules
   ========================================================= */
@media (max-width: 980px) {
  .scope-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .project-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .section, .section-tight { padding: 56px 0; }
  .hero { padding: 48px 0 64px; }
  .page-hero { padding: 40px 0 56px; }
  .cta-band { padding: 64px 0; }
  .highlight-bar { gap: 8px; }
  .highlight-tag { font-size: 0.76rem; padding: 8px 12px; }
  .form-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .illus-frame .illus-body { padding: 16px; }
}