/* ===================================================
   FERRUM GROUP HOLDINGS — ferrumgroup.in
   Hand-built. No framework.
   =================================================== */

:root{
  --navy:#101A2E;
  --navy-soft:#1F3864;
  --ink:#15181F;
  --body:#3D444F;
  --muted:#7A828F;
  --line:#E3E6EB;
  --paper:#FFFFFF;
  --wash:#F7F8FA;
  --accent:#B8873B;
  --mono:'SF Mono',Menlo,Consolas,monospace;
  --max:1160px;
  --text:680px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif;
  font-size:17px;line-height:1.7;color:var(--body);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:'Instrument Serif','Playfair Display',Georgia,serif;
  color:var(--ink);font-weight:400;line-height:1.15;letter-spacing:-0.015em;
}
h1{font-size:clamp(2.6rem,6vw,4.4rem)}
h2{font-size:clamp(2rem,4vw,3rem)}
h3{font-size:clamp(1.35rem,2.4vw,1.75rem)}
h4{font-size:1.15rem;font-family:'Inter',sans-serif;font-weight:600}

p{margin-bottom:1.15rem;max-width:var(--text)}
a{color:inherit;text-decoration:none}
strong{color:var(--ink);font-weight:600}

.wrap{max-width:var(--max);margin:0 auto;padding:0 32px}
.narrow{max-width:var(--text)}
section{padding:100px 0}
.wash{background:var(--wash)}
.dark{background:var(--navy);color:#C9D0DC}
.dark h1,.dark h2,.dark h3,.dark h4,.dark strong{color:#fff}
.dark .eyebrow{color:var(--accent)}

.eyebrow{
  font-size:.72rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);margin-bottom:20px;display:block;
}
.lede{font-size:1.24rem;line-height:1.6;color:var(--body)}

/* ---------- HEADER ---------- */
header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.logo{
  font-family:'Instrument Serif',Georgia,serif;font-size:1.5rem;letter-spacing:.14em;
  color:var(--ink);text-transform:uppercase;
}
.nav ul{display:flex;gap:34px;list-style:none}
.nav ul a{
  font-size:.88rem;font-weight:500;color:var(--body);
  padding-bottom:3px;border-bottom:1.5px solid transparent;transition:.18s;
}
.nav ul a:hover,.nav ul a.on{color:var(--ink);border-color:var(--accent)}
.burger{display:none;background:none;border:0;font-size:1.5rem;cursor:pointer;color:var(--ink)}

/* ---------- HERO ---------- */
.hero{padding:150px 0 110px}
.hero h1{margin-bottom:30px;max-width:16ch}
.hero .lede{max-width:640px;margin-bottom:44px}
.btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{
  display:inline-block;padding:15px 30px;font-size:.94rem;font-weight:500;
  border:1.5px solid var(--ink);color:var(--ink);transition:.18s;
}
.btn:hover{background:var(--ink);color:#fff}
.btn-fill{background:var(--ink);color:#fff}
.btn-fill:hover{background:var(--navy-soft);border-color:var(--navy-soft)}
.dark .btn{border-color:#fff;color:#fff}
.dark .btn:hover{background:#fff;color:var(--navy)}

/* ---------- GRIDS ---------- */
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:56px}
.g2{display:grid;grid-template-columns:repeat(2,1fr);gap:56px}
.pillar h3{margin-bottom:14px}
.pillar p{font-size:.98rem;margin:0}

.svc{padding:44px 0;border-top:1px solid var(--line)}
.svc:last-child{border-bottom:1px solid var(--line)}
.svc h3{margin-bottom:14px}
.svc .scope{font-size:.92rem;color:var(--muted);margin-top:16px;margin-bottom:0}

.list{list-style:none;margin:26px 0}
.list li{padding:13px 0 13px 28px;border-bottom:1px solid var(--line);position:relative;max-width:var(--text)}
.list li:before{content:"";position:absolute;left:0;top:22px;width:12px;height:1.5px;background:var(--accent)}

/* ---------- TABLE ---------- */
.tbl-wrap{overflow-x:auto;margin:34px 0;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;min-width:600px;font-size:.92rem}
th{
  text-align:left;padding:14px 18px;background:var(--navy);color:#fff;
  font-weight:600;font-size:.78rem;letter-spacing:.07em;text-transform:uppercase;
}
td{padding:14px 18px;border-bottom:1px solid var(--line);vertical-align:top}
tr:last-child td{border-bottom:0}
.hold{color:var(--accent);font-weight:600}

/* ---------- STATES / CHAIN ---------- */
.states{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;margin:40px 0;background:var(--line)}
.state{background:var(--paper);padding:28px 22px}
.dark .state{background:var(--navy)}
.state .n{font-family:'Instrument Serif',serif;font-size:2.1rem;color:var(--accent);display:block;margin-bottom:10px}
.state h4{margin-bottom:8px}
.state p{font-size:.9rem;margin:0}

.chain{
  font-family:var(--mono);font-size:.86rem;line-height:2.4;
  background:var(--wash);padding:30px;border-left:2px solid var(--accent);margin:30px 0;
  overflow-x:auto;
}
.dark .chain{background:rgba(255,255,255,.05)}

blockquote{
  border-left:2px solid var(--accent);padding-left:28px;margin:36px 0;
  font-family:'Instrument Serif',Georgia,serif;font-size:1.4rem;line-height:1.5;
  color:var(--ink);max-width:var(--text);
}
.dark blockquote{color:#fff}

/* ---------- COMPANY CARDS ---------- */
.co{padding:34px 0;border-top:1px solid var(--line);display:flex;gap:26px;align-items:flex-start}
.co:last-child{border-bottom:1px solid var(--line)}
.co-body{flex:1}
.co h3{margin-bottom:10px}
.co p{margin:0;font-size:.98rem}
.tag{
  font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  padding:5px 12px;white-space:nowrap;border:1px solid;
}
.tag.active{color:#1D6F4E;border-color:#1D6F4E;background:#EAF5F0}
.tag.dev{color:#8A6516;border-color:#8A6516;background:#FBF4E6}
.tag.plan{color:var(--muted);border-color:var(--line);background:var(--wash)}

/* ---------- FORM ---------- */
form{max-width:var(--text);margin-top:34px}
.field{margin-bottom:22px}
label{display:block;font-size:.82rem;font-weight:600;color:var(--ink);margin-bottom:7px;letter-spacing:.02em}
input,textarea,select{
  width:100%;padding:13px 15px;border:1px solid var(--line);background:var(--paper);
  font-family:inherit;font-size:1rem;color:var(--ink);transition:.15s;
}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--navy-soft)}
textarea{min-height:130px;resize:vertical}
button[type=submit]{
  padding:15px 34px;background:var(--ink);color:#fff;border:0;
  font-family:inherit;font-size:.94rem;font-weight:500;cursor:pointer;transition:.18s;
}
button[type=submit]:hover{background:var(--navy-soft)}

.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:44px;margin-top:34px}
.contact-item{padding-bottom:22px;border-bottom:1px solid var(--line)}
.contact-item .lbl{font-size:.76rem;font-weight:600;letter-spacing:.11em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.contact-item .val{color:var(--ink);font-size:1.02rem;line-height:1.6}

.steps{counter-reset:s;margin-top:34px}
.step{counter-increment:s;position:relative;padding:0 0 26px 54px;max-width:var(--text)}
.step:before{
  content:counter(s);position:absolute;left:0;top:-2px;
  font-family:'Instrument Serif',serif;font-size:1.5rem;color:var(--accent);
}
.step h4{margin-bottom:5px}
.step p{font-size:.96rem;margin:0}

/* ---------- FOOTER ---------- */
footer{background:var(--navy);color:#8C97A8;padding:70px 0 36px;font-size:.9rem}
footer .logo{color:#fff;display:block;margin-bottom:18px}
footer a{color:#8C97A8;transition:.15s}
footer a:hover{color:#fff}
.f-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px;margin-bottom:46px}
.f-grid ul{list-style:none}
.f-grid li{margin-bottom:9px}
.f-h{color:#fff;font-size:.76rem;font-weight:600;letter-spacing:.11em;text-transform:uppercase;margin-bottom:16px}
.f-bot{border-top:1px solid rgba(255,255,255,.12);padding-top:26px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:.84rem}

/* ---------- MOBILE ---------- */
@media(max-width:900px){
  .g3,.g2,.contact-grid,.f-grid{grid-template-columns:1fr;gap:38px}
  .states{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
  body{font-size:16px}
  .wrap{padding:0 22px}
  section{padding:70px 0}
  .hero{padding:96px 0 74px}
  .burger{display:block}
  .nav ul{
    display:none;position:absolute;top:74px;left:0;right:0;background:#fff;
    flex-direction:column;gap:0;padding:14px 22px 24px;border-bottom:1px solid var(--line);
  }
  .nav ul.open{display:flex}
  .nav ul li{width:100%}
  .nav ul a{display:block;padding:13px 0;border-bottom:1px solid var(--line)}
  .states{grid-template-columns:1fr}
  .co{flex-direction:column;gap:12px}
  .btns{flex-direction:column;align-items:stretch}
  .btn{text-align:center}
  blockquote{font-size:1.18rem;padding-left:20px}
  .chain{font-size:.76rem;padding:20px}
}

/* ===== V2 ADDITIONS ===== */
.big-stat{font-family:'Instrument Serif',serif;font-size:clamp(3rem,7vw,5.5rem);line-height:1;color:var(--ink);display:block;margin-bottom:12px}
.dark .big-stat{color:#fff}
.stat-lbl{font-size:.86rem;color:var(--muted);line-height:1.5}
.friction{padding:32px 0;border-top:1px solid var(--line)}
.friction:last-child{border-bottom:1px solid var(--line)}
.friction .num{font-family:'Instrument Serif',serif;font-size:1.6rem;color:var(--accent);margin-bottom:10px;display:block}
.friction h3{margin-bottom:12px}
.friction p{font-size:.98rem;margin:0}
.phase{display:grid;grid-template-columns:180px 1fr;gap:36px;padding:38px 0;border-top:1px solid var(--line)}
.phase:last-child{border-bottom:1px solid var(--line)}
.phase-meta .ph-n{font-family:'Instrument Serif',serif;font-size:2.4rem;color:var(--accent);display:block;line-height:1}
.phase-meta .ph-s{font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-top:8px;display:block}
.phase h3{margin-bottom:12px}
.phase p{font-size:.98rem}
.trigger{background:var(--wash);padding:16px 20px;border-left:2px solid var(--accent);margin-top:18px;font-size:.92rem}
.dark .trigger{background:rgba(255,255,255,.06)}
.trigger strong{display:block;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.dark .trigger strong{color:var(--accent)}
.flywheel{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin:44px 0;text-align:center}
.fw{padding:26px 14px;border-right:1px solid var(--line);position:relative}
.fw:last-child{border-right:0}
.dark .fw{border-color:rgba(255,255,255,.15)}
.fw .fw-n{font-family:'Instrument Serif',serif;font-size:1.5rem;color:var(--accent);display:block;margin-bottom:10px}
.fw p{font-size:.88rem;margin:0}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:0;margin:36px 0;border:1px solid var(--line)}
.compare>div{padding:30px}
.compare>div:first-child{border-right:1px solid var(--line);background:var(--wash)}
.compare h4{margin-bottom:14px;font-size:.78rem;letter-spacing:.11em;text-transform:uppercase}
.compare ul{list-style:none}
.compare li{padding:9px 0;font-size:.95rem;border-bottom:1px solid var(--line)}
.compare li:last-child{border-bottom:0}
@media(max-width:900px){
  .phase{grid-template-columns:1fr;gap:16px}
  .flywheel{grid-template-columns:1fr}
  .fw{border-right:0;border-bottom:1px solid var(--line)}
  .compare{grid-template-columns:1fr}
  .compare>div:first-child{border-right:0;border-bottom:1px solid var(--line)}
}

/* ---------- REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}