/* ============================================================
   HI-EVO — shared stylesheet
   Design system inherited from the brand identity spec:
   graphite ink, cool-grey panels, one violet→cyan "arc" gradient
   reserved for energy/motion. No green — read as infrastructure,
   not as an eco brand. Archivo for display, IBM Plex Sans for body,
   IBM Plex Mono for technical labels.
   ============================================================ */

@import url("https://fonts.googleapis.com/css2?family=Archivo:wght@600;700;800&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap");

:root{
  --bg:#E7EBEF;
  --surface:#FFFFFF;
  --surface-2:#F1F4F7;
  --ink:#101820;
  --ink-soft:#55606B;
  --ink-faint:#7B8590;
  --line:#CFD6DD;
  --line-strong:#B7C0C9;
  --accent-a:#4A3AFF;
  --accent-b:#1FD3E0;
  --accent-grad:linear-gradient(115deg,var(--accent-a),var(--accent-b));
  --on-accent:#FFFFFF;
  --shadow:0 1px 2px rgba(16,24,32,.04), 0 12px 32px -16px rgba(16,24,32,.16);
  --radius-s:6px;
  --radius-m:10px;
  --radius-l:16px;
  --pad:clamp(20px,5vw,64px);
  --maxw:1180px;
}

@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0E151C;
    --surface:#161F29;
    --surface-2:#1B2530;
    --ink:#EEF1F4;
    --ink-soft:#9AA5B0;
    --ink-faint:#6C7680;
    --line:rgba(238,241,244,.12);
    --line-strong:rgba(238,241,244,.20);
    --on-accent:#FFFFFF;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 24px 48px -24px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --bg:#0E151C;
  --surface:#161F29;
  --surface-2:#1B2530;
  --ink:#EEF1F4;
  --ink-soft:#9AA5B0;
  --ink-faint:#6C7680;
  --line:rgba(238,241,244,.12);
  --line-strong:rgba(238,241,244,.20);
  --on-accent:#FFFFFF;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 24px 48px -24px rgba(0,0,0,.6);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"IBM Plex Sans",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
.container{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}

h1,h2,h3,h4{
  font-family:"Archivo",sans-serif;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.08;
  margin:0;
  text-wrap:balance;
}
h1{font-size:clamp(2.3rem,3.4vw + 1.2rem,3.8rem);letter-spacing:-.03em}
h2{font-size:clamp(1.6rem,1.6vw + 1.1rem,2.15rem)}
h3{font-size:1.2rem;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em;max-width:62ch;color:var(--ink)}
.lede{font-size:clamp(1.05rem,.4vw + 1rem,1.25rem);color:var(--ink-soft);max-width:56ch}

.eyebrow{
  display:inline-flex;align-items:center;gap:.5em;
  font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-faint);
}
.eyebrow::before{
  content:"";width:14px;height:2px;border-radius:2px;
  background:var(--accent-grad);flex:none;
}
.mono{font-family:"IBM Plex Mono",ui-monospace,monospace}

.btn{
  display:inline-flex;align-items:center;gap:.55em;
  font-family:"IBM Plex Sans",sans-serif;font-weight:600;font-size:.95rem;
  padding:.85em 1.4em;border-radius:var(--radius-s);
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .15s ease, background .15s ease, border-color .15s ease, opacity .15s ease;
  line-height:1.2;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:var(--bg)}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .btn-primary{background:#EEF1F4;color:#0E151C}
}
[data-theme="dark"] .btn-primary{background:#EEF1F4;color:#0E151C}
.btn-primary:hover{opacity:.86}
.btn-ghost{border-color:var(--line-strong);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--ink-soft)}
.btn-accent{background:var(--accent-grad);color:#fff}
.btn-accent:hover{opacity:.92}
.btn svg{flex:none}

/* ---------------- header ---------------- */
.site-header{
  position:sticky;top:0;z-index:40;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header .bar{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:16px;padding-bottom:16px;gap:24px;
}
.brand{display:flex;align-items:center;gap:.6em;text-decoration:none;flex:none}
.brand img{height:26px;width:auto}
.brand .wordmark{
  font-family:"Archivo",sans-serif;font-weight:800;font-size:1.15rem;
  letter-spacing:-.02em;color:var(--ink);
}
.logo-dark{display:none}
.logo-light{display:block}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .logo-light{display:none}
  :root:not([data-theme="light"]) .logo-dark{display:block}
}
[data-theme="dark"] .logo-light{display:none}
[data-theme="dark"] .logo-dark{display:block}
.main-nav{display:flex;align-items:center;gap:2.1em}
.main-nav a{
  font-size:.92rem;font-weight:500;text-decoration:none;color:var(--ink-soft);
  padding:.3em 0;border-bottom:2px solid transparent;transition:color .15s ease, border-color .15s ease;
  white-space:nowrap;
}
.main-nav a:hover{color:var(--ink)}
.main-nav a[aria-current="page"]{color:var(--ink);border-color:var(--accent-b)}
.header-cta{display:flex;align-items:center;gap:14px;flex:none}
.nav-toggle{display:none;background:none;border:1px solid var(--line-strong);border-radius:var(--radius-s);width:40px;height:40px;align-items:center;justify-content:center;flex:none;color:var(--ink)}

.lang-switch{
  display:flex;align-items:center;gap:2px;flex:none;
  font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:.72rem;
  letter-spacing:.04em;border:1px solid var(--line-strong);border-radius:100px;padding:3px;
}
.lang-switch a{
  text-decoration:none;color:var(--ink-faint);padding:.35em .65em;border-radius:100px;line-height:1;
  transition:color .15s ease, background .15s ease;
}
.lang-switch a:hover{color:var(--ink)}
.lang-switch a.is-active{color:var(--bg);background:var(--ink)}

@media (max-width:860px){
  .main-nav{
    position:fixed;inset:64px 0 0 0;background:var(--bg);
    flex-direction:column;align-items:flex-start;gap:0;
    padding:8px var(--pad) 24px;
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .18s ease, transform .18s ease;
    overflow:auto;
  }
  .main-nav a{width:100%;padding:14px 0;border-bottom:1px solid var(--line);font-size:1.02rem}
  body.nav-open .main-nav{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav-toggle{display:inline-flex}
  .header-cta .btn-ghost{display:none}
}

/* ---------------- footer ---------------- */
.site-footer{border-top:1px solid var(--line);margin-top:clamp(64px,8vw,120px)}
.footer-grid{
  display:grid;gap:40px;padding:56px 0 32px;
  grid-template-columns:1.3fr 1fr 1fr 1fr;
}
@media (max-width:820px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr}}
.footer-grid h4{
  font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-faint);font-weight:600;margin-bottom:14px;
}
.footer-grid ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-grid a{text-decoration:none;color:var(--ink-soft);font-size:.92rem}
.footer-grid a:hover{color:var(--ink)}
.footer-brand p{color:var(--ink-soft);font-size:.92rem;margin-top:14px}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 40px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.82rem;color:var(--ink-faint);
}

/* ---------------- generic sections ---------------- */
section{padding:clamp(48px,7vw,96px) 0}
.section-border{border-top:1px solid var(--line)}
.section-head{margin-bottom:clamp(28px,4vw,48px);max-width:64ch}
.section-head h2{margin-top:10px}

.grid-3{display:grid;gap:22px;grid-template-columns:repeat(3,1fr)}
.grid-2{display:grid;gap:22px;grid-template-columns:repeat(2,1fr)}
@media (max-width:900px){.grid-3{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.grid-3,.grid-2{grid-template-columns:1fr}}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-m);
  padding:28px;box-shadow:var(--shadow);
}

.stat{display:flex;flex-direction:column;gap:4px}
.stat .n{font-family:"Archivo",sans-serif;font-weight:800;font-size:clamp(2.1rem,2.4vw + 1rem,3.1rem);letter-spacing:-.02em}
.stat .l{font-family:"IBM Plex Mono",monospace;font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint)}

/* client logo panel — single light card, no labels, no segmentation */
.client-panel{
  background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius-l);
  padding:clamp(32px,5vw,56px);display:flex;flex-wrap:wrap;
  align-items:center;justify-content:center;gap:clamp(28px,4vw,52px);
}
.client-panel img{height:auto;max-height:48px;width:auto;max-width:150px;object-fit:contain}

/* client logo strip */
.client-strip{display:flex;flex-wrap:wrap;gap:14px}
.client-badge{
  display:flex;align-items:center;justify-content:center;
  padding:18px 26px;border:1px solid var(--line);border-radius:var(--radius-s);
  background:var(--surface);flex:1 1 160px;min-width:150px;
}
.client-badge .cn{
  font-family:"Archivo",sans-serif;font-weight:700;font-size:1.02rem;letter-spacing:-.01em;
  color:var(--ink-soft);white-space:nowrap;
}
.client-badge:hover .cn{color:var(--ink)}
.client-badge{height:88px}
.client-badge img{
  max-width:100%;max-height:44px;width:auto;height:auto;object-fit:contain;
  filter:grayscale(1) opacity(.72);transition:filter .15s ease;
}
.client-badge:hover img{filter:grayscale(0) opacity(1)}
[data-theme="dark"] .client-badge img{
  filter:grayscale(1) opacity(.8) invert(0);
}
[data-theme="dark"] .client-badge:hover img{filter:grayscale(0) opacity(1)}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .client-badge img{
    filter:grayscale(1) opacity(.8) invert(0);
  }
  :root:not([data-theme="light"]) .client-badge:hover img{filter:grayscale(0) opacity(1)}
}

/* CTA band — intentionally an always-dark surface in both themes,
   so its text tokens are fixed rather than following --ink/--bg */
.cta-band{
  --cta-ink:#F3F5F7;
  --cta-soft:#B9C2CB;
  background:var(--ink);color:var(--cta-ink);border-radius:var(--radius-l);
  padding:clamp(32px,5vw,56px);display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .cta-band{background:var(--surface-2)}
}
[data-theme="dark"] .cta-band{background:var(--surface-2)}
.cta-band h2{color:inherit}
.cta-band p{color:var(--cta-soft);margin:0}

/* utility */
.flex{display:flex}
.center{align-items:center}
.between{justify-content:space-between}
.gap-s{gap:10px}.gap-m{gap:20px}.gap-l{gap:36px}
.mt-l{margin-top:clamp(28px,4vw,48px)}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.06em;
  padding:.4em .7em;border:1px solid var(--line);border-radius:100px;color:var(--ink-soft);
}

/* lifecycle strip (hero) */
.lifecycle{display:flex;gap:6px;align-items:flex-end;margin:34px 0 10px}
.lifecycle .seg{flex:1;border-radius:5px 5px 0 0;background:var(--line-strong)}
.lifecycle .seg.on{background:var(--accent-grad)}
.lifecycle-labels{display:flex;gap:6px}
.lifecycle-labels span{
  flex:1;font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.03em;
  color:var(--ink-faint);text-align:left;line-height:1.3;
}

/* process list (services) */
.process{border-top:1px solid var(--line)}
.process-row{
  display:grid;grid-template-columns:64px 1fr;gap:20px;padding:26px 0;border-bottom:1px solid var(--line);
}
.process-row .idx{font-family:"IBM Plex Mono",monospace;font-size:.82rem;color:var(--ink-faint);padding-top:.2em}
.process-row h3{margin-bottom:6px}
.process-row p{margin:0;color:var(--ink-soft)}

/* forms */
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:.85rem;font-weight:600;color:var(--ink)}
.field input,.field textarea,.field select{
  font-family:inherit;font-size:.98rem;padding:.85em 1em;border-radius:var(--radius-s);
  border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);
}
.field input:focus,.field textarea:focus,.field select:focus{outline:2px solid var(--accent-b);outline-offset:1px}
.field textarea{resize:vertical;min-height:120px}

.contact-row{display:flex;align-items:flex-start;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.contact-row:first-child{padding-top:0}
.contact-row .ic{
  width:38px;height:38px;border-radius:var(--radius-s);background:var(--surface-2);
  display:flex;align-items:center;justify-content:center;flex:none;color:var(--ink);
}
.contact-row .label{font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint)}
.contact-row .val{font-weight:600;margin-top:2px}
.contact-row a.val{text-decoration:none}
.contact-row a.val:hover{color:var(--accent-a)}

.social-row{display:flex;gap:10px;margin-top:22px}
.social-row a{
  width:42px;height:42px;border:1px solid var(--line-strong);border-radius:50%;
  display:flex;align-items:center;justify-content:center;text-decoration:none;color:var(--ink);
  transition:border-color .15s ease, background .15s ease;
}
.social-row a:hover{border-color:var(--accent-b);background:var(--surface-2)}

.skip-link{
  position:absolute;left:-999px;top:0;background:var(--ink);color:var(--bg);
  padding:10px 16px;border-radius:0 0 8px 0;z-index:100;
}
.skip-link:focus{left:0}

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