/* ============================================================
   Helexion Projects — design system
   Brand: Inter · navy #0B1422/#0F1B2D · amber #F5A623
   ============================================================ */

:root{
  --navy:#0B1422;
  --navy-2:#0F1B2D;
  --panel:#12213A;
  --ink:#141C29;
  --amber:#F5A623;
  --amber-deep:#E5AC2A;
  --blue:#3B82F6;
  --sky:#4DB6E0;
  --green:#10B981;
  --muted:#6B7280;
  --line:#E5E9F0;
  --bg:#FFFFFF;
  --bg-soft:#F6F8FB;
  --text:#1B2431;
  --text-soft:#4B5563;
  --radius:14px;
  --radius-sm:10px;
  --maxw:1120px;
  --shadow:0 1px 2px rgba(11,20,34,.06), 0 8px 30px rgba(11,20,34,.06);
  --shadow-lg:0 20px 60px rgba(11,20,34,.14);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
h1,h2,h3,h4{line-height:1.2;color:var(--ink);font-weight:700;letter-spacing:-.02em}
h1{font-size:clamp(2rem,4vw,3.1rem);margin:.2em 0 .4em}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin:0 0 .5em}
h3{font-size:1.2rem;margin:0 0 .4em}
p{margin:0 0 1rem}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--amber-deep);margin:0 0 .6em}
.lead{font-size:1.15rem;color:var(--text-soft)}
.muted{color:var(--muted)}
.center{text-align:center}

/* ---------- buttons ---------- */
.btn{
  display:inline-block;padding:.8rem 1.4rem;border-radius:var(--radius-sm);
  font-weight:600;font-size:.98rem;cursor:pointer;border:1px solid transparent;
  transition:transform .05s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--amber);color:#231a05;box-shadow:0 6px 18px rgba(245,166,35,.35)}
.btn-primary:hover{background:var(--amber-deep)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-dark{background:var(--navy-2);color:#fff}
.btn-dark:hover{background:var(--ink)}
.btn-lg{padding:1rem 1.8rem;font-size:1.05rem}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(11,20,34,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:.6rem;color:#fff;font-weight:700;letter-spacing:-.01em}
.brand:hover{text-decoration:none}
.brand .logo{width:34px;height:34px;border-radius:9px}
.brand small{display:block;font-size:.68rem;font-weight:500;color:var(--sky);letter-spacing:.04em}
.nav-links{display:flex;align-items:center;gap:1.35rem;list-style:none;margin:0;padding:0}
.nav-links a{color:#D7DEE9;font-size:.92rem;font-weight:500}
.nav-links a:hover{color:#fff;text-decoration:none}
.nav-links a.active{color:#fff}
.nav-cta{margin-left:.5rem}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:1.5rem;cursor:pointer}
@media(max-width:900px){
  .nav-links{position:absolute;top:68px;left:0;right:0;background:var(--navy);flex-direction:column;align-items:flex-start;gap:0;padding:8px 24px 18px;border-bottom:1px solid rgba(255,255,255,.1);display:none}
  .nav-links.open{display:flex}
  .nav-links li{width:100%}
  .nav-links a{display:block;padding:.7rem 0;width:100%}
  .nav-toggle{display:block}
}

/* ---------- hero ---------- */
.hero{background:radial-gradient(1200px 500px at 70% -10%, #16305a 0%, var(--navy-2) 45%, var(--navy) 100%);color:#fff;padding:88px 0 96px}
.hero .eyebrow{color:var(--sky)}
.hero h1{color:#fff;max-width:16ch}
.hero .lead{color:#C6D2E2;max-width:60ch}
.hero-cta{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.6rem}
.hero-note{margin-top:1.4rem;font-size:.86rem;color:#8FA3BE}

/* ---------- sections ---------- */
section{padding:72px 0}
.section-soft{background:var(--bg-soft)}
.section-dark{background:var(--navy-2);color:#fff}
.section-dark h1,.section-dark h2,.section-dark h3{color:#fff}
.section-dark .lead{color:#C6D2E2}
.section-head{max-width:70ch;margin:0 auto 2.4rem;text-align:center}

/* ---------- grid & cards ---------- */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:860px){.grid-3,.grid-4{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:box-shadow .2s ease,transform .2s ease}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.card .ico{width:44px;height:44px;border-radius:11px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1F3A5F,#F5A623);color:#fff;font-weight:800;margin-bottom:14px;font-size:1.1rem}
.card h3{margin-bottom:.35em}
.card p{margin:0;color:var(--text-soft);font-size:.97rem}
.section-dark .card{background:var(--panel);border-color:rgba(255,255,255,.09)}
.section-dark .card p{color:#B9C6D8}

.tag{display:inline-block;background:rgba(245,166,35,.14);color:var(--amber-deep);font-size:.74rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:.28rem .6rem;border-radius:999px}

/* ---------- workflow steps ---------- */
.steps{counter-reset:step;display:grid;gap:16px}
.step{display:grid;grid-template-columns:56px 1fr;gap:18px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.step .num{counter-increment:step;width:44px;height:44px;border-radius:12px;background:var(--navy-2);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.step .num::before{content:counter(step,decimal-leading-zero)}
.step .out{margin-top:.5rem;font-size:.86rem;color:var(--amber-deep);font-weight:600}
.step .out span{color:var(--muted);font-weight:500}

/* ---------- pipeline ---------- */
.pipe{display:flex;flex-wrap:wrap;gap:10px}
.pipe .stage{background:#fff;border:1px solid var(--line);border-radius:999px;padding:.5rem 1rem;font-size:.9rem;font-weight:600;color:var(--text-soft)}

/* ---------- feature split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
@media(max-width:820px){.split{grid-template-columns:1fr;gap:24px}}
.stat-row{display:flex;gap:34px;flex-wrap:wrap;margin-top:1rem}
.stat b{display:block;font-size:2rem;color:var(--amber-deep);line-height:1}
.stat span{font-size:.85rem;color:var(--muted)}

/* ---------- callout / CTA band ---------- */
.cta-band{background:linear-gradient(120deg,var(--navy-2),#16305a);color:#fff;border-radius:20px;padding:48px;text-align:center}
.cta-band h2{color:#fff}
.cta-band .lead{color:#C6D2E2;max-width:60ch;margin:0 auto 1.4rem}

/* ---------- list ---------- */
.checklist{list-style:none;padding:0;margin:0;display:grid;gap:.6rem}
.checklist li{padding-left:1.7rem;position:relative;color:var(--text-soft)}
.checklist li::before{content:"";position:absolute;left:0;top:.55em;width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,#1F3A5F,#F5A623)}

/* ---------- forms ---------- */
.form-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.fieldset{border:0;padding:0;margin:0 0 26px}
.fieldset legend{font-weight:700;color:var(--ink);font-size:1.05rem;margin-bottom:.4rem;padding:0}
.fieldset .hint{font-size:.86rem;color:var(--muted);margin:-.2rem 0 1rem}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:620px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:.35rem}
.field.full{grid-column:1/-1}
.field label{font-size:.86rem;font-weight:600;color:var(--text)}
.field .req{color:#d14343}
.field input,.field select,.field textarea{
  font:inherit;padding:.7rem .8rem;border:1px solid #CDD6E2;border-radius:9px;background:#fff;color:var(--text);width:100%;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid rgba(59,130,246,.35);border-color:var(--blue)}
.field textarea{min-height:120px;resize:vertical}
.checkgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:.5rem .9rem}
@media(max-width:620px){.checkgrid{grid-template-columns:1fr}}
.check{display:flex;align-items:flex-start;gap:.5rem;font-size:.92rem;color:var(--text-soft)}
.check input{width:auto;margin-top:.25rem}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:#AEBBCD;padding:56px 0 30px;font-size:.92rem}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.1)}
@media(max-width:820px){.footer-top{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.footer-top{grid-template-columns:1fr}}
.footer-top h4{color:#fff;font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:.9rem}
.footer-top a{color:#AEBBCD;display:block;padding:.22rem 0}
.footer-top a:hover{color:#fff;text-decoration:none}
.footer-brand .brand{margin-bottom:.8rem}
.footer-brand p{max-width:34ch;font-size:.9rem;color:#8FA3BE}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;font-size:.82rem;color:#7E8DA3}
.footer-bottom a{color:#7E8DA3}

/* ---------- language switcher (segmented control, distinct from nav links) ---------- */
.lang-switch{display:flex;align-items:center;gap:1px;margin-left:1rem;font-size:.74rem;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.16);border-radius:8px;padding:2px}
.lang-switch a{color:#9DB0C9;padding:.2rem .44rem;border-radius:6px;font-weight:600;letter-spacing:.03em;line-height:1}
.lang-switch a:hover{color:#fff;text-decoration:none;background:rgba(255,255,255,.09)}
.lang-switch a.active{color:var(--navy);background:var(--amber);font-weight:700}
.lang-switch a.active:hover{background:var(--amber)}
.lang-switch .sep{display:none}
@media(max-width:900px){.lang-switch{margin:.7rem 0 0;align-self:flex-start}}

/* ---------- track record cards ---------- */
.tr-card{position:relative;overflow:hidden;background:linear-gradient(165deg,#15294A 0%,#0B1422 100%);color:#fff;border:1px solid rgba(255,255,255,.10);border-radius:18px;box-shadow:var(--shadow-lg);display:flex;flex-direction:column}
.tr-card .tr-bar{height:5px;background:linear-gradient(90deg,var(--sky),var(--blue),var(--amber));flex:0 0 auto}
.tr-card::after{content:"";position:absolute;top:-60px;right:-60px;width:190px;height:190px;border-radius:50%;background:radial-gradient(circle at 34% 34%, rgba(59,130,246,.38), rgba(59,130,246,0) 70%);pointer-events:none}
.tr-card .tr-top{display:flex;align-items:center;gap:.65rem;padding:22px 24px 0;position:relative}
.tr-card .tr-ico{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1F3A5F,#F5A623);flex:0 0 auto}
.tr-card .tr-ico svg{width:22px;height:22px;display:block}
.tr-card .tr-sector{font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:#9DB0C9;font-weight:700}
.tr-card .tr-inner{padding:16px 24px 24px;position:relative}
.tr-card .tr-metric{font-size:2.8rem;font-weight:800;letter-spacing:-.02em;line-height:1;background:linear-gradient(90deg,#4DB6E0,#3B82F6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.tr-card .tr-metric small{font-size:.9rem;font-weight:700;color:#9DB0C9;-webkit-text-fill-color:#9DB0C9;margin-left:.4rem;letter-spacing:.06em}
.tr-card h3{color:#fff;margin:1rem 0 .3rem;font-size:1.22rem}
.tr-card .tr-sub{display:flex;flex-wrap:wrap;gap:.5rem;color:#9DB0C9;font-size:.86rem;margin:0 0 1rem;align-items:center}
.tr-card .tr-sub b{color:#E9EEF5;font-weight:600}
.tr-card .tr-impact{display:inline-flex;align-items:center;gap:.45rem;background:rgba(77,182,224,.14);border:1px solid rgba(77,182,224,.30);color:#9BD8F0;font-size:.82rem;font-weight:600;padding:.4rem .75rem;border-radius:999px;margin-bottom:1rem}
.tr-card .tr-desc{color:#C6D2E2;margin:0;font-size:.95rem;border-top:1px solid rgba(255,255,255,.08);padding-top:1rem}

/* ---------- FAQ accordion ---------- */
.faq{max-width:840px;margin:0 auto;display:grid;gap:12px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);overflow:hidden}
.faq summary{cursor:pointer;padding:18px 22px;font-weight:600;color:var(--ink);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.35rem;color:var(--amber-deep);font-weight:700;line-height:1;flex:0 0 auto}
.faq details[open] summary::after{content:"\2013"}
.faq details[open] summary{border-bottom:1px solid var(--line)}
.faq .ans{padding:16px 22px 20px;color:var(--text-soft)}
.faq .ans p{margin:0 0 .7rem}
.faq .ans p:last-child{margin:0}

/* ---------- misc ---------- */
.notice{background:rgba(245,166,35,.10);border:1px solid rgba(245,166,35,.35);border-radius:12px;padding:16px 18px;font-size:.92rem;color:#7a5a10}
.breadcrumb{font-size:.85rem;color:var(--muted);margin-bottom:.4rem}
.page-hero{background:var(--navy-2);color:#fff;padding:60px 0}
.page-hero h1{color:#fff;margin-bottom:.3em}
.page-hero .lead{color:#C6D2E2;max-width:66ch}
.page-hero .eyebrow{color:var(--sky)}