/* ============================================================
   ThinkForce — redesign
   Palette: warm off-white / near-black / signal yellow
   System: fluid column grid, hairline drafting lines,
           serif display + mono metadata + sans body
   ============================================================ */

:root{
  --bg:        #f5f4ef;
  --ink:       #342e2f;
  --muted:     #767676;
  --accent:    #ffdb00;
  --line:      rgba(52,46,47,.16);
  --hairline:  rgba(52,46,47,.055);
  --paper:     #f5f4ef;
  --gutter:    clamp(17px, 2.4vw, 40px);
  --serif: "Fraunces", Georgia, serif;
  --sans:  "Inter", -apple-system, "Helvetica Neue", sans-serif;
  --mono:  "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

*{ margin:0; padding:0; box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{ background:var(--accent); color:var(--ink); }
::-webkit-scrollbar{ width:0; height:0; }
a{ color:inherit; text-decoration:none; }
img,svg{ display:block; max-width:100%; }

/* --- drafting-paper hairlines, fixed behind everything --- */
.gridlines{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    repeating-linear-gradient(to right,
      transparent 0, transparent calc(100%/12 - 1px),
      var(--hairline) calc(100%/12 - 1px), var(--hairline) calc(100%/12));
  mask-image:linear-gradient(to bottom, black 70%, transparent 100%);
}
.noise{
  position:fixed; inset:-50%; z-index:1; pointer-events:none; opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0.2 0 0 0 0 0.18 0 0 0 0 0.18 0 0 0 0.035 0'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 7s steps(6) infinite;
}
@keyframes grain{
  0%{transform:translate(0,0)} 20%{transform:translate(-3%,2%)}
  40%{transform:translate(2%,-3%)} 60%{transform:translate(-2%,-2%)}
  80%{transform:translate(3%,2%)} 100%{transform:translate(0,0)}
}

.wrap{ position:relative; z-index:2; padding:0 var(--gutter); }

/* ================= header ================= */
header.site{
  position:fixed; top:0; left:0; right:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding:14px var(--gutter);
  mix-blend-mode:normal;
  transition:background .3s ease, border-color .3s ease;
  border-bottom:1px solid transparent;
}
header.site.scrolled{
  background:rgba(245,244,239,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.logo{
  font-family:var(--mono); font-weight:600; font-size:15px;
  letter-spacing:.12em; display:flex; align-items:center; gap:9px;
}
.logo .die{
  width:14px; height:14px; background:var(--ink); position:relative; flex:none;
}
.logo .die::after{
  content:""; position:absolute; inset:3px; background:var(--accent);
}
nav.main{ display:flex; gap:6px; align-items:center; }
nav.main a{
  font-family:var(--mono); font-size:12.5px; letter-spacing:.06em;
  padding:5px 13px 6px; border-radius:20px; border:1px solid transparent;
  transition:background .15s ease, color .15s ease, border-color .15s ease;
}
nav.main a:hover{ background:var(--ink); color:var(--bg); }
nav.main a.active{ border-color:var(--ink); }
nav.main a.active:hover{ background:var(--ink); color:var(--bg); }
.burger{ display:none; }

@media (max-width:820px){
  nav.main{
    position:fixed; inset:0; background:var(--bg); z-index:49;
    flex-direction:column; justify-content:center; gap:18px;
    opacity:0; pointer-events:none; transition:opacity .25s ease;
  }
  nav.main.open{ opacity:1; pointer-events:auto; }
  nav.main a{ font-size:20px; }
  .burger{
    display:block; z-index:50; background:none; border:1px solid var(--ink);
    border-radius:20px; font-family:var(--mono); font-size:12px;
    padding:6px 14px; color:var(--ink); cursor:pointer;
  }
}

/* ================= shared type ================= */
.kicker{
  font-family:var(--mono); font-size:12px; letter-spacing:.22em;
  text-transform:uppercase; color:var(--muted);
  display:flex; align-items:center; gap:10px;
}
.kicker::before{
  content:""; width:26px; height:1px; background:var(--ink); flex:none;
}
.display{
  font-family:var(--serif); font-weight:400;
  font-size:clamp(42px, 6.4vw, 104px);
  line-height:1.02; letter-spacing:-.015em;
}
.display em{ font-style:italic; }
.h2{
  font-family:var(--serif); font-weight:400;
  font-size:clamp(30px, 3.6vw, 54px); line-height:1.08; letter-spacing:-.01em;
}
.lead{ font-size:clamp(16px,1.4vw,19px); line-height:1.65; color:var(--ink); max-width:56ch; }
.muted{ color:var(--muted); }
.mono{ font-family:var(--mono); }

/* ================= hero ================= */
.hero{
  min-height:100svh; display:flex; flex-direction:column;
  justify-content:flex-end; position:relative;
  padding-top:110px; overflow:hidden;
}
.hero-grid{
  display:grid; grid-template-columns:repeat(12,1fr); gap:0 24px;
  align-items:end; padding-bottom:48px;
}
.hero-copy{ grid-column:1 / span 8; }
.hero-copy .kicker{ margin-bottom:26px; }
.hero-copy .display{ margin-bottom:30px; }
.hero-side{
  grid-column:9 / span 4; position:relative;
  display:flex; flex-direction:column; align-items:flex-end; gap:40px;
}
.hero-side .lead{ font-size:15.5px; }

/* rotating circular badge */
.badge-rotor{ position:relative; width:170px; height:170px; flex:none; }
.badge-rotor svg{ animation:rotor 14s linear infinite; }
@keyframes rotor{ from{transform:rotate(0)} to{transform:rotate(359deg)} }
.badge-rotor .core{
  position:absolute; inset:0; display:grid; place-items:center;
}
.badge-rotor .core span{
  width:52px; height:52px; background:var(--ink); position:relative;
}
.badge-rotor .core span::after{
  content:""; position:absolute; inset:14px; background:var(--accent);
}

/* hero data strip */
.datastrip{
  border-top:1px solid var(--line);
  display:grid; grid-template-columns:repeat(4,1fr);
}
.datastrip > div{
  padding:18px var(--gutter) 20px; border-right:1px solid var(--line);
  font-family:var(--mono); font-size:12px; letter-spacing:.04em;
}
.datastrip > div:last-child{ border-right:0; }
.datastrip b{ display:block; font-size:20px; font-weight:600; margin-top:4px; letter-spacing:0; }
.datastrip .lbl{ color:var(--muted); text-transform:uppercase; font-size:10.5px; letter-spacing:.18em; }
@media (max-width:820px){
  .datastrip{ grid-template-columns:1fr 1fr; }
  .datastrip > div:nth-child(2n){ border-right:0; }
  .datastrip > div{ border-top:1px solid var(--line); }
  .hero-copy{ grid-column:1 / -1; }
  .hero-side{ grid-column:1 / -1; flex-direction:row; justify-content:space-between; align-items:flex-end; margin-top:44px; }
}

/* chip diagram, absolute right of hero on large screens */
.hero-chip{
  position:absolute; right:var(--gutter); top:96px; width:min(30vw,420px);
  opacity:.9; pointer-events:none;
}
@media (max-width:1100px){ .hero-chip{ display:none; } }

/* ================= sections ================= */
section.block{ padding:clamp(70px,9vw,140px) 0; border-top:1px solid var(--line); position:relative; }
.sec-head{
  display:grid; grid-template-columns:repeat(12,1fr); gap:0 24px;
  margin-bottom:clamp(40px,5vw,72px); align-items:end;
}
.sec-head .kicker{ grid-column:1 / span 3; }
.sec-head .h2{ grid-column:4 / span 9; }
@media (max-width:820px){
  .sec-head .kicker{ grid-column:1/-1; margin-bottom:18px; }
  .sec-head .h2{ grid-column:1/-1; }
}

/* ================= index rows (sibling-dim hover) ================= */
.rows{ border-top:1px solid var(--line); }
.rows:hover .row{ color:var(--muted); }
.rows:hover .row .r-name{ color:var(--muted); }
.rows .row:hover{ color:var(--ink); }
.rows .row:hover .r-name{ color:var(--ink); }
.row{
  display:grid; grid-template-columns:repeat(12,1fr); gap:0 24px;
  align-items:baseline; padding:26px 0 28px;
  border-bottom:1px solid var(--line);
  transition:color .2s ease; cursor:pointer; position:relative;
}
.row .r-idx{
  grid-column:1 / span 1; font-family:var(--mono); font-size:12px;
  color:var(--muted); display:flex; align-items:center; gap:8px;
}
.row .r-idx::before{
  content:""; width:0; height:7px; max-width:7px; border-radius:50%;
  background:var(--ink); transition:width .2s ease; overflow:hidden; flex:none;
}
.row:hover .r-idx::before{ width:7px; }
.row .r-name{
  grid-column:2 / span 5; font-family:var(--serif);
  font-size:clamp(24px,2.6vw,40px); line-height:1.05; transition:color .2s ease;
}
.row .r-tag{
  grid-column:7 / span 2; font-family:var(--mono); font-size:11.5px;
  letter-spacing:.14em; text-transform:uppercase;
}
.row .r-desc{ grid-column:9 / span 3; font-size:13.5px; line-height:1.5; }
.row .r-arrow{
  grid-column:12 / span 1; font-family:var(--mono); text-align:right;
  transition:transform .2s ease;
}
.row:hover .r-arrow{ transform:translateX(6px); }
.row:hover{ background:linear-gradient(to right, transparent, rgba(255,219,0,.14) 60%, rgba(255,219,0,.3)); }
@media (max-width:820px){
  .row .r-idx{ grid-column:1/ span 2; }
  .row .r-name{ grid-column:3 / span 10; }
  .row .r-tag{ grid-column:3 / span 5; margin-top:8px; }
  .row .r-desc{ grid-column:3 / span 9; margin-top:6px; }
  .row .r-arrow{ display:none; }
}

/* ================= pill quote ================= */
.pill{
  border:1px solid var(--ink); border-radius:40vw;
  padding:clamp(60px,8vw,120px) clamp(30px,7vw,110px);
  text-align:center; margin:clamp(60px,8vw,120px) var(--gutter);
}
.pill p{
  font-family:var(--serif); font-size:clamp(22px,2.9vw,44px);
  line-height:1.25; letter-spacing:-.01em;
}
.pill .mono-tag{
  font-family:var(--mono); font-size:11.5px; letter-spacing:.2em;
  text-transform:uppercase; color:var(--muted); margin-bottom:22px;
}

/* ================= spec sheets ================= */
.spec{ border-top:1px solid var(--line); }
.spec + .spec{ margin-top:clamp(50px,6vw,90px); }
.spec-head{
  display:grid; grid-template-columns:repeat(12,1fr); gap:0 24px;
  padding:26px 0 20px; align-items:baseline;
}
.spec-head .s-code{
  grid-column:1/span 3; font-family:var(--mono); font-size:12px;
  letter-spacing:.18em; text-transform:uppercase; color:var(--muted);
}
.spec-head .s-name{
  grid-column:4/span 9; font-family:var(--serif);
  font-size:clamp(26px,3vw,46px); line-height:1.05;
}
.spec-intro{
  display:grid; grid-template-columns:repeat(12,1fr); gap:0 24px;
  padding-bottom:30px;
}
.spec-intro p{ grid-column:4/span 7; font-size:15px; line-height:1.65; color:var(--ink); }
@media (max-width:820px){
  .spec-head .s-code{ grid-column:1/-1; margin-bottom:10px; }
  .spec-head .s-name{ grid-column:1/-1; }
  .spec-intro p{ grid-column:1/-1; }
}
table.specs{ width:100%; border-collapse:collapse; }
table.specs td{
  border-top:1px solid var(--hairline); border-top-color:rgba(52,46,47,.12);
  padding:13px 0; vertical-align:baseline; font-size:14.5px;
}
table.specs td.k{
  font-family:var(--mono); font-size:12px; letter-spacing:.1em;
  text-transform:uppercase; color:var(--muted); width:34%;
  padding-right:24px;
}
table.specs tr:hover td{ background:rgba(255,219,0,.16); }

/* ================= solutions ================= */
.sol-grid{ display:grid; grid-template-columns:repeat(12,1fr); gap:0 24px; }
.sol{ grid-column:span 4; border-top:1px solid var(--ink); padding-top:22px; }
.sol .s-num{
  font-family:var(--mono); font-size:12px; color:var(--muted);
  letter-spacing:.16em; margin-bottom:14px;
}
.sol h3{
  font-family:var(--serif); font-size:clamp(24px,2.2vw,34px);
  font-weight:400; margin-bottom:26px; line-height:1.1;
}
.sol ul{ list-style:none; }
.sol li{
  border-top:1px solid var(--line); padding:11px 0;
  font-size:14px; display:flex; gap:12px; align-items:baseline;
}
.sol li::before{ content:"·"; font-family:var(--mono); color:var(--muted); }
.sol li b{ font-weight:600; }
.sol .sub{
  font-family:var(--mono); font-size:11px; letter-spacing:.16em;
  text-transform:uppercase; color:var(--muted); margin:20px 0 4px;
}
@media (max-width:820px){ .sol{ grid-column:1/-1; margin-bottom:50px; } }

/* ================= careers ================= */
.job{ border-top:1px solid var(--ink); padding:30px 0 40px; }
.job-head{
  display:grid; grid-template-columns:repeat(12,1fr); gap:0 24px;
  align-items:baseline; margin-bottom:26px;
}
.job-head .j-idx{ grid-column:1/span 2; font-family:var(--mono); font-size:12px; color:var(--muted); letter-spacing:.14em; }
.job-head h3{ grid-column:3/span 7; font-family:var(--serif); font-size:clamp(24px,2.4vw,38px); font-weight:400; }
.job-head .j-mail{ grid-column:10/span 3; font-family:var(--mono); font-size:12px; text-align:right; }
.job-head .j-mail a{ border-bottom:1px solid var(--ink); }
.job-cols{ display:grid; grid-template-columns:repeat(12,1fr); gap:0 24px; }
.job-cols > div{ grid-column:span 6; }
.job-cols h4{
  font-family:var(--mono); font-size:11px; letter-spacing:.2em;
  text-transform:uppercase; color:var(--muted); margin-bottom:14px;
}
.job-cols ol{ list-style:none; counter-reset:j; }
.job-cols ol li{
  counter-increment:j; font-size:14px; line-height:1.6;
  padding:9px 0 9px 34px; position:relative; border-top:1px solid rgba(52,46,47,.1);
}
.job-cols ol li::before{
  content:counter(j,decimal-leading-zero); position:absolute; left:0; top:11px;
  font-family:var(--mono); font-size:11px; color:var(--muted);
}
@media (max-width:820px){
  .job-head .j-idx,.job-head h3,.job-head .j-mail{ grid-column:1/-1; text-align:left; margin-bottom:8px; }
  .job-cols > div{ grid-column:1/-1; margin-bottom:26px; }
}

/* ================= about ================= */
.about-grid{ display:grid; grid-template-columns:repeat(12,1fr); gap:0 24px; }
.about-grid .a-lead{ grid-column:1/span 7; }
.about-grid .a-lead p{
  font-family:var(--serif); font-size:clamp(22px,2.4vw,34px);
  line-height:1.35; margin-bottom:1.2em;
}
.about-grid .a-side{ grid-column:9/span 4; }
.about-grid .a-side p{ font-size:14.5px; line-height:1.7; margin-bottom:1.2em; }
@media (max-width:820px){
  .about-grid .a-lead,.about-grid .a-side{ grid-column:1/-1; }
  .about-grid .a-side{ margin-top:40px; }
}
.caps{ border-top:1px solid var(--line); margin-top:clamp(40px,5vw,70px); }
.cap-row{
  display:grid; grid-template-columns:repeat(12,1fr); gap:0 24px;
  padding:20px 0; border-bottom:1px solid var(--line); align-items:baseline;
}
.cap-row .c-idx{ grid-column:1/span 2; font-family:var(--mono); font-size:12px; color:var(--muted); letter-spacing:.14em; }
.cap-row .c-name{ grid-column:3/span 4; font-family:var(--serif); font-size:clamp(19px,1.8vw,26px); }
.cap-row .c-desc{ grid-column:7/span 6; font-size:13.5px; color:var(--muted); line-height:1.6; }
@media (max-width:820px){
  .cap-row .c-idx{ grid-column:1/span 3; }
  .cap-row .c-name{ grid-column:4/span 9; }
  .cap-row .c-desc{ grid-column:4/span 9; margin-top:6px; }
}

/* ================= big stats band ================= */
.stats{ display:grid; grid-template-columns:repeat(12,1fr); gap:0 24px; border-top:1px solid var(--line); }
.stat{ grid-column:span 3; padding:26px 0 30px; border-right:1px solid var(--hairline); }
.stat:last-child{ border-right:0; }
.stat b{ font-family:var(--serif); font-weight:400; font-size:clamp(34px,3.6vw,58px); display:block; line-height:1; }
.stat span{ font-family:var(--mono); font-size:11px; letter-spacing:.16em; text-transform:uppercase; color:var(--muted); display:block; margin-top:10px; }
@media (max-width:820px){ .stat{ grid-column:span 6; border-bottom:1px solid var(--hairline); } }

/* ================= footer ================= */
footer.site{
  background:var(--ink); color:var(--bg); position:relative; z-index:2;
  padding:clamp(60px,7vw,100px) var(--gutter) 30px;
}
footer.site .f-top{
  display:grid; grid-template-columns:10fr 22fr 12fr 12fr 34fr; gap:0 24px;
  padding-bottom:clamp(50px,6vw,90px);
}
footer.site .f-logo{ font-family:var(--mono); font-size:14px; letter-spacing:.12em; }
footer.site .f-cta p{
  font-family:var(--serif); font-size:clamp(28px,3.4vw,52px); line-height:1.1;
}
footer.site .f-cta a{
  display:inline-block; margin-top:20px; font-family:var(--mono); font-size:13px;
  background:var(--accent); color:var(--ink); padding:12px 26px; border-radius:30px;
  transition:transform .2s ease;
}
footer.site .f-cta a:hover{ transform:translateY(-2px); }
footer.site h5{
  font-family:var(--mono); font-size:11px; letter-spacing:.2em;
  text-transform:uppercase; color:rgba(245,244,239,.55); margin-bottom:16px; font-weight:400;
}
footer.site ul{ list-style:none; }
footer.site li{ margin-bottom:9px; font-size:14px; }
footer.site li a{ color:rgba(245,244,239,.85); border-bottom:1px solid transparent; transition:border-color .15s; }
footer.site li a:hover{ border-bottom-color:var(--accent); }
footer.site .f-mail{ font-family:var(--mono); font-size:14px; }
footer.site .f-mail a{ color:var(--bg); }
footer.site .f-mail .row-m{ display:flex; justify-content:space-between; max-width:320px; padding:10px 0; border-bottom:1px solid rgba(245,244,239,.14); }
footer.site .f-mail .row-m span{ color:rgba(245,244,239,.5); font-size:11px; letter-spacing:.14em; text-transform:uppercase; }
footer.site .f-mail .row-addr a{ text-align:right; font-size:12px; line-height:1.7; }
footer.site .f-bottom{
  border-top:1px solid rgba(245,244,239,.16); padding-top:22px;
  display:flex; justify-content:space-between; font-family:var(--mono);
  font-size:11.5px; letter-spacing:.08em; color:rgba(245,244,239,.5);
}
@media (max-width:900px){
  footer.site .f-top{ grid-template-columns:1fr; gap:40px; }
  footer.site .f-bottom{ flex-direction:column; gap:8px; }
}

/* ================= reveal ================= */
.rv{ opacity:0; transform:translateY(26px); transition:opacity .8s ease, transform .8s cubic-bezier(.2,.7,.2,1); }
.rv.on{ opacity:1; transform:none; }
.rv-d1{ transition-delay:.08s } .rv-d2{ transition-delay:.16s } .rv-d3{ transition-delay:.24s }

/* page hero (inner pages) */
.page-hero{ padding:clamp(140px,18vh,200px) 0 clamp(50px,6vw,90px); }
.page-hero .kicker{ margin-bottom:24px; }
.page-hero .display{ font-size:clamp(40px,6vw,92px); }
.page-hero .lead{ margin-top:28px; }