:root{
    --bg:#F4F7F6;
    --bg-alt:#E8EFEC;
    --panel:#FFFFFF;
    --ink:#123D33;
    --ink-soft:#4B5D57;
    --ink-faint:#8A9A93;
    --signal:#C98A4B;
    --signal-ink:#7A4A1F;
    --teal:#1F6F5C;
    --accent-gold:#D4A93A;
    --line:#D6E0DC;
    --line-strong:#B7C4BE;
    --logo-base:#123D33;
    --logo-secondary:#1F6F5C;
    --header-bg:rgba(244,247,246,0.86);
    --radius:2px;
    --max:1180px;
    --display: 'Space Grotesk', sans-serif;
    --body: 'IBM Plex Sans', sans-serif;
    --mono: 'IBM Plex Mono', monospace;
  }

  [data-theme="dark"]{
    --bg:#0D1F19;
    --bg-alt:#132922;
    --panel:#152A23;
    --ink:#F2F5F3;
    --ink-soft:#B9C7C1;
    --ink-faint:#7E9A91;
    --signal:#E0A363;
    --signal-ink:#F0C98A;
    --teal:#4FA98C;
    --accent-gold:#D4A93A;
    --line:#22392F;
    --line-strong:#33503F;
    --logo-base:#F2F5F3;
    --logo-secondary:#4FA98C;
    --header-bg:rgba(13,31,25,0.86);
  }

  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important;}
  }

  body{
    background:
      radial-gradient(var(--line) 1px, transparent 1px);
    background-size: 28px 28px;
    background-color: var(--bg);
    color:var(--ink);
    font-family:var(--body);
    line-height:1.55;
    -webkit-font-smoothing:antialiased;
    transition:background-color 0.25s ease, color 0.25s ease;
  }
  header, .panel, .contact-card, .service, .stat, .value h3::before, .pipe-num{
    transition:background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
  }

  a{color:inherit; text-decoration:none;}
  img{max-width:100%; display:block;}

  .wrap{max-width:var(--max); margin:0 auto; padding:0 32px;}
  @media (max-width:640px){ .wrap{padding:0 20px;} }

  .eyebrow{
    font-family:var(--mono);
    font-size:12px;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--ink-faint);
    display:flex; align-items:center; gap:10px;
  }
  .eyebrow::before{
    content:"";
    width:16px; height:1px; background:var(--signal);
    display:inline-block;
  }

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

  /* ---------- Header ---------- */
  header{
    position:sticky; top:0; z-index:50;
    background:var(--header-bg);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
    transition:background-color 0.25s ease;
  }
  .nav{
    display:flex; align-items:center; justify-content:space-between;
    padding:18px 0;
  }
  .logo{ width:230px; height:auto; flex-shrink:0; }
  .nav-links{ display:flex; gap:32px; font-size:14px; }
  .nav-links a{ color:var(--ink-soft); transition:color 0.15s; }
  .nav-links a:hover{ color:var(--ink); }
  .nav-right{ display:flex; align-items:center; gap:14px; }
  .nav-cta{
    font-family:var(--mono); font-size:13px;
    border:1px solid var(--ink); padding:9px 16px; border-radius:var(--radius);
    color:var(--ink); transition:background 0.15s, color 0.15s;
    white-space:nowrap;
  }
  .nav-cta:hover{ background:var(--ink); color:var(--bg); }
  .theme-toggle{
    width:34px; height:34px; border-radius:50%;
    border:1px solid var(--line-strong); background:var(--panel);
    color:var(--ink); cursor:pointer; font-size:14px;
    display:flex; align-items:center; justify-content:center;
    transition:border-color 0.15s; flex-shrink:0;
  }
  .theme-toggle:hover{ border-color:var(--ink); }
  .theme-toggle .icon-moon{ display:none; }
  [data-theme="dark"] .theme-toggle .icon-sun{ display:none; }
  [data-theme="dark"] .theme-toggle .icon-moon{ display:inline; }

  .nav-toggle{
    display:none; width:34px; height:34px; border-radius:var(--radius);
    border:1px solid var(--line-strong); background:var(--panel);
    cursor:pointer; flex-direction:column; align-items:center; justify-content:center; gap:4px;
    flex-shrink:0;
  }
  .nav-toggle span{ width:16px; height:1.5px; background:var(--ink); display:block; transition:transform 0.2s, opacity 0.2s; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(5.5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3){ transform:translateY(-5.5px) rotate(-45deg); }

  .mobile-menu{
    display:none; flex-direction:column;
    max-height:0; overflow:hidden;
    background:var(--panel); border-bottom:1px solid var(--line);
    transition:max-height 0.3s ease;
  }
  .mobile-menu.open{ max-height:400px; }
  .mobile-menu a{
    padding:14px 32px; font-size:15px; color:var(--ink-soft);
    border-top:1px solid var(--line);
  }
  .mobile-menu a:hover{ color:var(--ink); }

  @media (max-width:800px){
    .logo{ width:180px; }
    .nav-links{ display:none; }
    .nav-cta{ display:none; }
    .nav-toggle{ display:flex; }
    .mobile-menu{ display:flex; }
  }
  @media (max-width:400px){
    .logo{ width:150px; }
  }

  /* ---------- Hero ---------- */
  .hero{
    padding:88px 0 64px;
    display:grid; grid-template-columns:1.1fr 0.9fr; gap:48px; align-items:center;
  }
  @media (max-width:900px){ .hero{ grid-template-columns:1fr; padding:56px 0 40px; } }

  .hero h1{
    font-size:clamp(34px, 5vw, 58px);
    line-height:1.05;
    margin:18px 0 22px;
  }
  .hero h1 em{
    font-style:normal; color:var(--teal);
  }
  .hero p.lead{
    font-size:17px; color:var(--ink-soft); max-width:46ch; margin-bottom:30px;
  }
  .cta-row{ display:flex; gap:14px; flex-wrap:wrap; }
  .btn{
    font-family:var(--mono); font-size:13px; letter-spacing:0.02em;
    padding:13px 22px; border-radius:var(--radius);
    display:inline-flex; align-items:center; gap:8px;
    transition:transform 0.15s, background 0.15s, color 0.15s;
  }
  .btn-primary{ background:var(--ink); color:var(--bg); }
  .btn-primary:hover{ background:var(--teal); transform:translateY(-1px); }
  .btn-ghost{ border:1px solid var(--line-strong); color:var(--ink); }
  .btn-ghost:hover{ border-color:var(--ink); }

  .hero-visual{ position:relative; }
  .hero-visual svg{ width:100%; height:auto; }
  .hero-visual .cap{
    font-family:var(--mono); font-size:11px; color:var(--ink-faint);
    text-align:center; margin-top:10px; letter-spacing:0.05em;
  }

  /* ---------- Section shell ---------- */
  section{ padding:88px 0; border-top:1px solid var(--line); }
  section .head{ max-width:640px; margin-bottom:48px; }
  section .head h2{ font-size:clamp(26px,3.4vw,38px); margin-top:14px; }
  section .head p{ color:var(--ink-soft); margin-top:14px; font-size:16px; }

  .reveal{ opacity:0; transform:translateY(16px); transition:opacity 0.6s ease, transform 0.6s ease; }
  .reveal.in{ opacity:1; transform:translateY(0); }

  /* ---------- About ---------- */
  .about-grid{ display:grid; grid-template-columns:1fr 1fr; gap:56px; }
  @media (max-width:800px){ .about-grid{ grid-template-columns:1fr; gap:32px; } }
  .stat-row{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:36px; }
  @media (max-width:560px){ .stat-row{ grid-template-columns:1fr; } }
  .stat{ border-left:2px solid var(--signal); padding-left:14px; }
  .stat .num{ font-family:var(--mono); font-size:26px; font-weight:500; color:var(--ink); }
  .stat .lab{ font-size:13px; color:var(--ink-soft); margin-top:4px; }

  /* ---------- Services ---------- */
  .service-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
  @media (max-width:900px){ .service-grid{ grid-template-columns:repeat(2,1fr); } }
  @media (max-width:600px){ .service-grid{ grid-template-columns:1fr; } }
  .service{
    background:var(--panel); padding:32px 26px; transition:background 0.2s;
  }
  .service:hover{ background:var(--bg-alt); }
  .service .tag{ font-family:var(--mono); font-size:11px; color:var(--teal); letter-spacing:0.06em; }
  .service h3{ font-size:19px; margin:12px 0 10px; }
  .service p{ font-size:14.5px; color:var(--ink-soft); }

  /* ---------- Service tags (homepage light version) ---------- */
  .service-tags{ display:flex; flex-wrap:wrap; gap:12px; }
  .service-tag{
    font-family:var(--mono); font-size:13.5px; color:var(--ink);
    border:1px solid var(--line-strong); border-radius:20px;
    padding:9px 18px; background:var(--panel);
    transition:border-color 0.15s, background 0.15s;
  }
  .service-tag:hover{ border-color:var(--teal); background:var(--bg-alt); }

  /* ---------- Process (pipeline) ---------- */
  .pipeline{ position:relative; }
  .pipe-line{
    position:absolute; left:27px; top:14px; bottom:14px; width:1px;
    background:repeating-linear-gradient(var(--line-strong) 0 6px, transparent 6px 12px);
  }
  @media (max-width:640px){ .pipe-line{ left:19px; } }
  .pipe-step{
    display:grid; grid-template-columns:56px 1fr; gap:22px;
    padding:22px 0; position:relative;
  }
  @media (max-width:640px){ .pipe-step{ grid-template-columns:40px 1fr; gap:16px; } }
  .pipe-num{
    width:56px; height:56px; border-radius:50%;
    background:var(--panel); border:1px solid var(--line-strong);
    display:flex; align-items:center; justify-content:center;
    font-family:var(--mono); font-size:15px; color:var(--ink);
    position:relative; z-index:1;
  }
  @media (max-width:640px){ .pipe-num{ width:40px; height:40px; font-size:13px; } }
  .pipe-step.active .pipe-num{ background:var(--ink); color:var(--bg); border-color:var(--ink); }
  .pipe-body h3{ font-size:20px; margin-bottom:6px; }
  .pipe-body p{ color:var(--ink-soft); font-size:15px; max-width:60ch; }

  /* ---------- Why / values ---------- */
  .value-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:36px; }
  @media (max-width:800px){ .value-grid{ grid-template-columns:1fr; } }
  .value h3{ font-size:18px; margin-bottom:8px; display:flex; align-items:center; gap:10px; }
  .value h3::before{ content:""; width:8px; height:8px; background:var(--signal); border-radius:50%; }
  .value p{ color:var(--ink-soft); font-size:14.5px; }

  /* ---------- Quiz ---------- */
  .quiz-box{
    background:var(--panel); border:1px solid var(--line); padding:32px;
  }
  .quiz-question{ margin-bottom:26px; }
  .quiz-question:last-of-type{ margin-bottom:0; }
  .quiz-q-title{ font-family:var(--display); font-weight:600; font-size:16px; margin-bottom:12px; }
  .quiz-options{ display:flex; flex-direction:column; gap:8px; }
  .quiz-option{
    border:1px solid var(--line-strong); border-radius:var(--radius);
    padding:11px 14px; font-size:14px; color:var(--ink-soft);
    cursor:pointer; transition:border-color 0.15s, background 0.15s, color 0.15s;
  }
  .quiz-option:hover{ border-color:var(--teal); }
  .quiz-option.selected{ border-color:var(--ink); background:var(--bg-alt); color:var(--ink); font-weight:500; }
  .quiz-progress{
    font-family:var(--mono); font-size:12px; color:var(--ink-faint);
    margin-bottom:22px; letter-spacing:0.04em;
  }
  .quiz-submit{
    font-family:var(--mono); font-size:13px; padding:13px 22px; border-radius:var(--radius);
    background:var(--ink); color:var(--bg); border:none; cursor:pointer;
    opacity:0.4; pointer-events:none; transition:opacity 0.2s, background 0.15s;
    margin-top:8px;
  }
  .quiz-submit.enabled{ opacity:1; pointer-events:auto; }
  .quiz-submit.enabled:hover{ background:var(--teal); }
  .quiz-result{ text-align:center; padding:12px 0; }
  .quiz-result .tier{
    font-family:var(--display); font-weight:700; font-size:30px; color:var(--ink); margin-bottom:10px;
  }
  .quiz-result .tier-desc{ color:var(--ink-soft); font-size:15.5px; max-width:52ch; margin:0 auto 24px; }
  .quiz-result .btn{ display:inline-flex; }

  /* ---------- Contact ---------- */
  .contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:56px; }
  @media (max-width:800px){ .contact-grid{ grid-template-columns:1fr; gap:36px; } }
  .contact-card{
    background:var(--panel); border:1px solid var(--line); padding:32px;
  }
  .field{ margin-bottom:18px; }
  .field label{ display:block; font-family:var(--mono); font-size:12px; color:var(--ink-soft); margin-bottom:6px; letter-spacing:0.03em; }
  .field input, .field textarea{
    width:100%; border:1px solid var(--line-strong); background:var(--bg);
    padding:11px 12px; font-family:var(--body); font-size:14.5px; color:var(--ink);
    border-radius:var(--radius);
  }
  .field textarea{ min-height:110px; resize:vertical; }
  .field input:focus, .field textarea:focus{ outline:2px solid var(--teal); outline-offset:1px; }
  .contact-status{ font-size:13.5px; margin-top:14px; min-height:18px; }
  .contact-status.success{ color:var(--teal); }
  .contact-status.error{ color:var(--signal); }

  .info-list{ display:flex; flex-direction:column; gap:22px; }
  .info-item .k{ font-family:var(--mono); font-size:11px; color:var(--ink-faint); letter-spacing:0.08em; text-transform:uppercase; }
  .info-item .v{ font-size:17px; margin-top:6px; }
  .info-item .v a:hover{ color:var(--teal); }

  /* ---------- Footer ---------- */
  footer{ border-top:1px solid var(--line); padding:36px 0; }
  .foot-row{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px; }
  .foot-row p{ font-family:var(--mono); font-size:12px; color:var(--ink-faint); }

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