:root {
    --ink: #0B0F14;
    --surface: #12181F;
    --surface-2: #182029;
    --line: #26303B;
    --line-soft: #1C2530;
    --paper: #E9E6DC;
    --paper-dim: #A9AEB6;
    --brass: #C9A24B;
    --brass-dim: #8A7439;
    --teal: #4C8C93;
    --radius: 3px;
  }

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

  html { scroll-behavior: smooth; }

  body {
    background: var(--ink);
    color: var(--paper);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  h1, h2, h3, h4 {
    font-family: 'Zilla Slab', serif;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--paper);
  }

  .mono {
    font-family: 'JetBrains Mono', monospace;
  }

  a { color: inherit; text-decoration: none; }

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

  :focus-visible {
    outline: 2px solid var(--brass);
    outline-offset: 3px;
  }

  .wrap {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 32px;
  }

  /* ---------- background blueprint grid ---------- */
  .blueprint-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
      linear-gradient(var(--line-soft) 1px, transparent 1px),
      linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
    background-size: 64px 64px;
    opacity: 0.35;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
  }

  #circuit-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    width: 100%;
    height: 100%;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
  }

  @keyframes bp-drift {
    0%   { background-position: 0 0, 0 0; }
    100% { background-position: 64px 128px, 64px 128px; }
  }

  @keyframes bp-glow {
    0%, 100% { transform: translate(-15%, -10%); }
    50%      { transform: translate(15%, 20%); }
  }

  /* ---------- corner bracket / blueprint annotation motif ---------- */
  .bp-frame {
    position: relative;
    border: 1px solid var(--line);
  }
  .bp-frame::before,
  .bp-frame::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    border: 1.5px solid var(--brass);
  }
  .bp-frame::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
  .bp-frame::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

  .eyebrow {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--brass);
    margin-bottom: 18px;
  }
  .eyebrow::before {
    content: '';
    width: 22px;
    height: 1px;
    background: var(--brass);
  }

  /* ---------- header ---------- */
  header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(11, 15, 20, 0.88);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
  }
  .nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 150px;
  }
  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Zilla Slab', serif;
    font-size: 19px;
    font-weight: 600;
    letter-spacing: 0.01em;
  }
  .logo .mark {
    width: 30px;
    height: 30px;
    border: 1.5px solid var(--brass);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--brass);
    transform: rotate(45deg);
    flex-shrink: 0;
  }
  .logo .mark span { transform: rotate(-45deg); }
  .logo small {
    display: block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.1em;
    color: var(--paper-dim);
    font-weight: 400;
    margin-top: 5px;
  }
  .navlinks {
    display: flex;
    gap: 34px;
    font-size: 14px;
    color: var(--paper-dim);
  }
  .navlinks a:hover { color: var(--paper); }

  .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius);
    transition: all 0.2s ease;
    white-space: nowrap;
  }
  .btn-primary {
    background: var(--brass);
    color: #141004;
  }
  .btn-primary:hover { background: #DBB25E; transform: translateY(-1px); }
  .btn-ghost {
    border: 1px solid var(--line);
    color: var(--paper);
  }
  .btn-ghost:hover { border-color: var(--brass); color: var(--brass); }

  @media (max-width: 860px) {
    .navlinks { display: none; }
  }

  /* ---------- hero ---------- */
  .hero {
    position: relative;
    padding: 100px 0 90px;
  }
  .hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
    align-items: start;
  }
  .hero h1 {
    font-size: clamp(34px, 4.6vw, 56px);
    line-height: 1.08;
    margin-bottom: 22px;
  }
  .hero h1 em {
    font-style: normal;
    color: var(--brass);
  }
  .hero p.lead {
    font-size: 17px;
    color: var(--paper-dim);
    max-width: 480px;
    margin-bottom: 34px;
  }
  .hero-ctas {
    display: flex;
    gap: 14px;
    margin-bottom: 52px;
    flex-wrap: wrap;
  }
  .stat-row {
    display: grid;
    grid-template-columns: repeat(3, auto);
    gap: 40px;
  }
  .stat-row .stat-num {
    font-family: 'Zilla Slab', serif;
    font-size: 26px;
    color: var(--brass);
  }
  .stat-row .stat-label {
    font-size: 12px;
    color: var(--paper-dim);
    margin-top: 2px;
  }

  /* ---------- terminal card ---------- */
  .terminal {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
  }
  .terminal-head {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--surface-2);
    border-bottom: 1px solid var(--line);
  }
  .terminal-head .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--line); }
  .terminal-head span.fname {
    margin-left: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--paper-dim);
  }
  .terminal-body {
    padding: 22px 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12.5px;
    line-height: 1.9;
    color: #9FB0A8;
  }
  .terminal-body .k { color: var(--teal); }
  .terminal-body .s { color: var(--brass); }
  .terminal-body .c { color: #5C6B78; }
  .terminal-log {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px dashed var(--line);
  }
  .terminal-log .line { display: flex; gap: 10px; margin-bottom: 6px; }
  .terminal-log .line .ok { color: #7FB56A; }
  .blink {
    display: inline-block;
    width: 7px;
    height: 13px;
    background: var(--brass);
    animation: blink 1.1s steps(2) infinite;
    vertical-align: middle;
  }
  @keyframes blink { 50% { opacity: 0; } }

  @media (max-width: 860px) {
    .hero-grid { grid-template-columns: 1fr; }
    .stat-row { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  }

  /* ---------- sections generic ---------- */
  section { position: relative; padding: 100px 0; }
  .section-head { max-width: 620px; margin-bottom: 56px; }
  .section-head h2 { font-size: clamp(26px, 3.2vw, 38px); margin-bottom: 14px; }
  .section-head p { color: var(--paper-dim); font-size: 16px; }

  .divider {
    height: 1px;
    background: var(--line);
  }

  /* ---------- services ---------- */
  .services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
  }
  .service-card {
    background: var(--ink);
    padding: 36px 30px;
    position: relative;
    transition: background 0.25s ease;
  }
  .service-card:hover { background: var(--surface); }
  .service-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--brass-dim);
    margin-bottom: 24px;
  }
  .service-card h3 { font-size: 20px; margin-bottom: 12px; }
  .service-card p { color: var(--paper-dim); font-size: 14.5px; margin-bottom: 20px; }
  .service-card ul { list-style: none; margin-bottom: 24px; }
  .service-card li {
    font-size: 13.5px;
    color: var(--paper-dim);
    padding-left: 16px;
    position: relative;
    margin-bottom: 8px;
  }
  .service-card li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--teal);
  }
  .service-link {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--brass);
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .service-link:hover { gap: 10px; }

  @media (max-width: 860px) {
    .services-grid { grid-template-columns: 1fr; }
  }

  /* ---------- philosophy / about ---------- */
  .philosophy {
    background: var(--surface);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  .philosophy-grid {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 60px;
    align-items: center;
  }
  .foundation-diagram {
    padding: 30px;
  }
  .foundation-diagram .layer {
    padding: 14px 16px;
    border: 1px solid var(--line);
    margin-bottom: -1px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12.5px;
    display: flex;
    justify-content: space-between;
    color: var(--paper-dim);
  }
  .foundation-diagram .layer.base {
    background: var(--surface-2);
    color: var(--brass);
    border-color: var(--brass-dim);
    font-weight: 600;
  }
  .philosophy h2 { font-size: clamp(26px, 3.2vw, 36px); margin-bottom: 20px; }
  .philosophy p { color: var(--paper-dim); font-size: 16px; margin-bottom: 18px; max-width: 540px; }
  .philosophy p strong { color: var(--paper); font-weight: 600; }

  @media (max-width: 860px) {
    .philosophy-grid { grid-template-columns: 1fr; }
  }

  /* ---------- portfolio ---------- */
  .case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
  }
  .case-card {
    background: var(--surface);
    border: 1px solid var(--line);
    padding: 28px;
    display: flex;
    flex-direction: column;
  }
  .case-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--teal);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 14px;
  }
  .case-card h3 { font-size: 19px; margin-bottom: 10px; }
  .case-card p { color: var(--paper-dim); font-size: 14px; margin-bottom: 18px; flex-grow: 1; }
  .case-metric {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding-top: 16px;
    border-top: 1px dashed var(--line);
  }
  .case-metric .num { font-family: 'Zilla Slab', serif; font-size: 22px; color: var(--brass); }
  .case-metric .lbl { font-size: 12.5px; color: var(--paper-dim); }
  .case-note {
    margin-top: 30px;
    font-size: 13px;
    color: var(--paper-dim);
    font-style: italic;
  }

  @media (max-width: 860px) {
    .case-grid { grid-template-columns: 1fr; }
  }

  /* ---------- benefits ---------- */
  .benefits-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
  }
  .benefit-item {
    background: var(--ink);
    padding: 30px 32px;
    display: flex;
    gap: 18px;
  }
  .benefit-icon {
    width: 38px;
    height: 38px;
    border: 1px solid var(--brass-dim);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brass);
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
  }
  .benefit-item h3 { font-size: 16.5px; margin-bottom: 6px; }
  .benefit-item p { font-size: 13.5px; color: var(--paper-dim); }

  @media (max-width: 860px) {
    .benefits-list { grid-template-columns: 1fr; }
  }

  /* ---------- FAQ ---------- */
  .faq-item {
    border-bottom: 1px solid var(--line);
  }
  .faq-q {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    color: var(--paper);
    font-family: 'Zilla Slab', serif;
    font-size: 17px;
    font-weight: 600;
    padding: 22px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    gap: 20px;
  }
  .faq-q .plus {
    font-family: 'JetBrains Mono', monospace;
    color: var(--brass);
    font-size: 18px;
    flex-shrink: 0;
    transition: transform 0.25s ease;
  }
  .faq-item.open .faq-q .plus { transform: rotate(45deg); }
  .faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .faq-a p {
    padding-bottom: 22px;
    color: var(--paper-dim);
    font-size: 14.5px;
    max-width: 640px;
  }

  /* ---------- final CTA ---------- */
  .final-cta {
    text-align: center;
    padding: 110px 0;
  }
  .final-cta h2 { font-size: clamp(28px, 4vw, 44px); margin-bottom: 18px; }
  .final-cta p { color: var(--paper-dim); font-size: 16px; max-width: 480px; margin: 0 auto 36px; }

  /* ---------- footer ---------- */
  footer {
    border-top: 1px solid var(--line);
    padding: 56px 0 30px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 44px;
  }
  .footer-grid h4 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--paper-dim);
    margin-bottom: 16px;
  }
  .footer-grid ul { list-style: none; }
  .footer-grid li { margin-bottom: 10px; font-size: 14px; }
  .footer-grid li a:hover { color: var(--brass); }
  .footer-bottom {
    display: flex;
    justify-content: space-between;
    padding-top: 26px;
    border-top: 1px solid var(--line);
    font-size: 12.5px;
    color: var(--paper-dim);
    flex-wrap: wrap;
    gap: 10px;
  }

  @media (max-width: 700px) {
    .footer-grid { grid-template-columns: 1fr; }
  }

  /* ---------- whatsapp float ---------- */
  .wa-float {
    position: fixed;
    bottom: 26px;
    right: 26px;
    z-index: 60;
    background: var(--brass);
    color: #141004;
    padding: 14px 20px;
    border-radius: 40px;
    font-size: 13.5px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 9px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  }
  .wa-float:hover { background: #DBB25E; }
  .wa-float .pulse {
    width: 7px; height: 7px; border-radius: 50%; background: #141004;
  }

  @media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
  }

  ::selection { background: var(--brass); color: #141004; }