/* ==========================================================================
   Headwaterlab.ai — core stylesheet
   Build upstream. Defend downstream.
   ========================================================================== */

/* ---------- Fonts (self-hosted, no external dependency) ---------- */
@font-face{font-family:"Instrument Serif";src:url("fonts/instrument-serif-latin-400-normal.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Instrument Serif";src:url("fonts/instrument-serif-latin-400-italic.woff2") format("woff2");font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:"Inter";src:url("fonts/inter-latin-400-normal.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Inter";src:url("fonts/inter-latin-500-normal.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"Inter";src:url("fonts/inter-latin-600-normal.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Inter";src:url("fonts/inter-latin-700-normal.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}

/* ---------- Tokens ---------- */
:root{
  --paper:#FAFAF7;
  --paper-2:#F3F0E8;
  --sand:#EAE5D9;
  --ink:#12211F;
  --ink-2:#4B5A56;
  --ink-3:#798682;
  --teal:#0E4F52;
  --teal-mid:#14666A;
  --teal-deep:#082E30;
  --copper:#B4642E;
  --copper-soft:#D98A4E;
  --line:#DFDACD;
  --line-strong:#C9C2B1;

  --serif:"Instrument Serif",Georgia,"Times New Roman",serif;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  --wrap:1260px;
  --gut:clamp(20px,4vw,48px);
  --sec:clamp(72px,9vw,140px);
  --r:3px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:17px;line-height:1.65;
  font-weight:400;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:400;letter-spacing:-.012em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
hr{border:0;border-top:1px solid var(--line);margin:0}
::selection{background:var(--teal);color:var(--paper)}

/* ---------- Layout ---------- */
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:var(--gut);padding-right:var(--gut)}
.section{padding-top:var(--sec);padding-bottom:var(--sec);position:relative}
.section--tight{padding-top:clamp(56px,6vw,88px);padding-bottom:clamp(56px,6vw,88px)}
.rule{height:1px;background:var(--line)}

/* ---------- Type ---------- */
.display{font-family:var(--serif);font-weight:400;line-height:1.02;letter-spacing:-.02em}
.d1{font-size:clamp(3.1rem,8.2vw,6.4rem)}
.d2{font-size:clamp(2.4rem,5.2vw,4rem);line-height:1.06}
.d3{font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.12}
.d4{font-size:clamp(1.35rem,2vw,1.75rem);line-height:1.2}
.serif-it{font-family:var(--serif);font-style:italic}

.eyebrow{
  font-size:.6875rem;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--teal);display:flex;align-items:center;gap:.7em;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--copper);flex:none}
.eyebrow--plain::before{display:none}
.num{
  font-size:.6875rem;font-weight:600;letter-spacing:.18em;color:var(--ink-3);
  font-variant-numeric:tabular-nums;
}
.lede{font-size:clamp(1.0625rem,1.5vw,1.3125rem);line-height:1.6;color:var(--ink-2);max-width:62ch}
.muted{color:var(--ink-2)}
.small{font-size:.9375rem;line-height:1.6}
.xsmall{font-size:.8125rem;line-height:1.55;color:var(--ink-3)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  padding:.95em 1.6em;border-radius:var(--r);border:1px solid transparent;
  font-size:.9375rem;font-weight:500;letter-spacing:.005em;cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.btn svg{flex:none;transition:transform .3s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn--primary{background:var(--teal);color:#fff}
.btn--primary:hover{background:var(--teal-deep)}
.btn--ghost{border-color:var(--line-strong);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink);background:transparent}
.btn--light{background:var(--paper);color:var(--teal-deep)}
.btn--light:hover{background:#fff}
.btn--onDark{border-color:rgba(250,250,247,.34);color:#fff}
.btn--onDark:hover{border-color:#fff;background:rgba(255,255,255,.07)}

.arrow-link{
  display:inline-flex;align-items:center;gap:.55em;font-size:.9375rem;font-weight:500;
  color:var(--teal);padding-bottom:2px;border-bottom:1px solid rgba(14,79,82,.28);
  transition:border-color .25s var(--ease),color .25s var(--ease);
}
.arrow-link svg{transition:transform .3s var(--ease)}
.arrow-link:hover{border-color:var(--copper);color:var(--copper)}
.arrow-link:hover svg{transform:translateX(4px)}

/* ---------- Header ---------- */
.site-head{
  position:sticky;top:0;z-index:60;background:rgba(250,250,247,.86);
  backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);
  border-bottom:1px solid transparent;transition:border-color .3s var(--ease),background .3s var(--ease);
}
.site-head.is-stuck{border-bottom-color:var(--line)}
.head-in{display:flex;align-items:center;justify-content:space-between;gap:24px;height:80px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:38px;height:38px;border-radius:9px}
.brand-word{font-family:var(--serif);font-size:1.5rem;line-height:1;letter-spacing:-.01em;color:var(--ink)}
.brand-word .dot{color:var(--copper)}

.nav{display:flex;align-items:center;gap:clamp(18px,2.4vw,34px)}
.nav a{
  font-size:.9375rem;font-weight:500;color:var(--ink-2);position:relative;padding:6px 0;
  transition:color .2s var(--ease);
}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--copper);
  transition:width .28s var(--ease);
}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink)}
.nav a:hover::after,.nav a[aria-current="page"]::after{width:100%}
.head-cta{display:flex;align-items:center;gap:16px}
.head-cta .btn{padding:.72em 1.25em}

.burger{display:none;width:42px;height:42px;border:1px solid var(--line-strong);border-radius:var(--r);background:transparent;align-items:center;justify-content:center;cursor:pointer}
.burger span{display:block;width:17px;height:1.5px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:17px;height:1.5px;background:var(--ink);transition:transform .28s var(--ease),opacity .2s}
.burger span::before{top:-5.5px}.burger span::after{top:5.5px}
.nav-open .burger span{background:transparent}
.nav-open .burger span::before{transform:translateY(5.5px) rotate(45deg)}
.nav-open .burger span::after{transform:translateY(-5.5px) rotate(-45deg)}

@media (max-width:960px){
  .nav,.head-cta .btn{display:none}
  .burger{display:flex}
  .mobile-nav{
    position:fixed;top:80px;left:0;right:0;bottom:0;height:calc(100dvh - 80px);
    background:var(--paper);z-index:59;
    padding:32px var(--gut) 48px;display:flex;flex-direction:column;gap:4px;
    transform:translateY(-8px);opacity:0;pointer-events:none;transition:opacity .25s var(--ease),transform .25s var(--ease);
    overflow-y:auto;
  }
  .nav-open .mobile-nav{opacity:1;transform:none;pointer-events:auto}
  .mobile-nav a{font-family:var(--serif);font-size:2rem;padding:14px 0;border-bottom:1px solid var(--line)}
  .mobile-nav .btn{margin-top:28px;justify-content:center;font-family:var(--sans);font-size:.9375rem;border-bottom:0}
}
@media (min-width:961px){.mobile-nav{display:none}}

/* ---------- Hero ---------- */
.hero{position:relative;padding-top:clamp(56px,7vw,96px);padding-bottom:clamp(56px,7vw,104px);overflow:hidden}
.hero-bg{
  position:absolute;top:-18%;right:-24%;width:min(1180px,116%);opacity:.34;pointer-events:none;
  -webkit-mask-image:radial-gradient(70% 62% at 68% 42%,#000 0%,rgba(0,0,0,.55) 52%,transparent 82%);
  mask-image:radial-gradient(70% 62% at 68% 42%,#000 0%,rgba(0,0,0,.55) 52%,transparent 82%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.32fr) minmax(0,.68fr);gap:clamp(32px,5vw,72px);align-items:end}
.hero h1{margin:22px 0 0}
.hero h1 em{font-style:italic;color:var(--teal)}
.hero-side{padding-bottom:6px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}.hero-side{padding-bottom:0}}

/* ---------- Stat rail ---------- */
.rail{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.rail > div{padding:26px clamp(14px,2vw,28px) 26px 0;border-right:1px solid var(--line)}
.rail > div:last-child{border-right:0}
.rail dt{font-family:var(--serif);font-size:clamp(1.9rem,3vw,2.6rem);line-height:1;color:var(--teal)}
.rail dd{margin:8px 0 0;font-size:.875rem;color:var(--ink-2);line-height:1.5}
@media (max-width:760px){
  .rail{grid-template-columns:1fr 1fr}
  .rail > div:nth-child(2n){border-right:0}
  .rail > div:nth-child(-n+2){border-bottom:1px solid var(--line)}
}

/* ---------- Section head ---------- */
.sec-head{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(24px,5vw,72px);align-items:start;margin-bottom:clamp(40px,5vw,68px)}
.sec-head .num{margin-bottom:18px}
@media (max-width:820px){.sec-head{grid-template-columns:1fr;gap:20px}}

/* ---------- Service panels ---------- */
.panels{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.panel{background:var(--paper);padding:clamp(30px,3.6vw,52px);display:flex;flex-direction:column;position:relative;transition:background .35s var(--ease)}
.panel:hover{background:#fff}
.panel-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.panel-icon{width:44px;height:44px;color:var(--teal)}
.panel h3{margin:0 0 14px}
.panel .lede{font-size:1rem}
.panel-list{margin:28px 0 0;border-top:1px solid var(--line)}
.panel-list li{padding:13px 0 13px 22px;border-bottom:1px solid var(--line);font-size:.9375rem;color:var(--ink-2);position:relative}
.panel-list li::before{content:"";position:absolute;left:2px;top:22px;width:7px;height:7px;border-radius:50%;border:1.5px solid var(--copper)}
.panel-foot{margin-top:auto;padding-top:32px}
@media (max-width:860px){.panels{grid-template-columns:1fr}}

/* ---------- Capability grid ---------- */
.caps{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cap{background:var(--paper);padding:clamp(24px,2.6vw,34px);transition:background .3s var(--ease),transform .3s var(--ease)}
.cap:hover{background:#fff}
.cap .num{display:block;margin-bottom:18px;color:var(--copper)}
.cap h4{font-family:var(--sans);font-size:1.0625rem;font-weight:600;letter-spacing:-.005em;margin-bottom:9px}
.cap p{font-size:.9063rem;line-height:1.6;color:var(--ink-2)}
@media (max-width:940px){.caps{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.caps{grid-template-columns:1fr}}

/* ---------- Method ---------- */
.steps{border-top:1px solid var(--line)}
.step{
  display:grid;grid-template-columns:78px minmax(0,.9fr) minmax(0,1.4fr);gap:clamp(16px,3vw,40px);
  padding:clamp(24px,3vw,38px) 0;border-bottom:1px solid var(--line);align-items:baseline;
  transition:padding-left .35s var(--ease);
}
.step:hover{padding-left:10px}
.step .num{color:var(--copper)}
.step h4{font-family:var(--serif);font-size:clamp(1.375rem,2.2vw,1.875rem);line-height:1.15}
.step p{font-size:.9688rem;color:var(--ink-2)}
@media (max-width:780px){.step{grid-template-columns:56px 1fr;gap:14px}.step p{grid-column:2}}

/* ---------- Dark band ---------- */
.band{background:var(--teal-deep);color:#EDF1F0;position:relative;overflow:hidden}
.band .eyebrow{color:var(--copper-soft)}
.band .eyebrow::before{background:var(--copper-soft)}
.band .muted,.band p{color:rgba(237,241,240,.76)}
.band h2,.band h3{color:#fff}
.band-bg{position:absolute;inset:auto -10% -50% 40%;width:1000px;opacity:.16;pointer-events:none;filter:invert(1)}
.band-grid{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(32px,6vw,88px);align-items:start}
.band-cols{display:grid;gap:1px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.14)}
.band-cols > div{background:var(--teal-deep);padding:26px 28px}
.band-cols h4{font-family:var(--sans);font-size:1rem;font-weight:600;color:#fff;margin-bottom:7px}
.band-cols p{font-size:.9063rem;line-height:1.6}
@media (max-width:880px){.band-grid{grid-template-columns:1fr}}

/* ---------- Cards / insights ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,2.4vw,32px)}
.card{
  display:flex;flex-direction:column;border-top:2px solid var(--ink);padding-top:22px;
  transition:border-color .3s var(--ease);
}
.card:hover{border-top-color:var(--copper)}
.card .meta{font-size:.75rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);margin-bottom:16px}
.card h4{font-family:var(--serif);font-size:1.5rem;line-height:1.18;margin-bottom:12px}
.card p{font-size:.9375rem;color:var(--ink-2);margin-bottom:20px}
.card .arrow-link{margin-top:auto;align-self:flex-start}
@media (max-width:900px){.cards{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.cards{grid-template-columns:1fr}}

/* ---------- Two-col prose ---------- */
.prose-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(28px,6vw,80px);align-items:start}
@media (max-width:860px){.prose-grid{grid-template-columns:1fr}}
.prose p + p{margin-top:1.15em}
.prose h3{font-family:var(--serif);font-size:1.75rem;margin:1.8em 0 .5em}
.prose h3:first-child{margin-top:0}

/* ---------- Callout / quote ---------- */
.pull{
  border-left:2px solid var(--copper);padding:6px 0 6px 26px;
  font-family:var(--serif);font-size:clamp(1.375rem,2.4vw,1.875rem);line-height:1.28;color:var(--ink);
}

/* ---------- Facts list ---------- */
.facts{border-top:1px solid var(--line)}
.facts div{display:flex;justify-content:space-between;gap:24px;padding:15px 0;border-bottom:1px solid var(--line);font-size:.9375rem}
.facts dt{color:var(--ink-3)}
.facts dd{margin:0;text-align:right;color:var(--ink)}

/* ---------- CTA band ---------- */
.cta{background:var(--paper-2);border-top:1px solid var(--line)}
.cta-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:clamp(28px,5vw,64px);align-items:center}
@media (max-width:820px){.cta-grid{grid-template-columns:1fr}}

/* ---------- Forms ---------- */
.form{display:grid;gap:18px}
.field{display:grid;gap:7px}
.field label{font-size:.8125rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
.field input,.field select,.field textarea{
  font:inherit;font-size:.9688rem;color:var(--ink);background:#fff;
  border:1px solid var(--line-strong);border-radius:var(--r);padding:13px 14px;width:100%;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:140px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(14,79,82,.12)
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media (max-width:620px){.field-row{grid-template-columns:1fr}}
.form-note{font-size:.8125rem;color:var(--ink-3)}

/* ---------- Footer ---------- */
.site-foot{background:var(--teal-deep);color:rgba(237,241,240,.72);padding:clamp(56px,7vw,88px) 0 32px}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:clamp(28px,4vw,56px)}
.site-foot h5{font-size:.6875rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.55);margin:0 0 18px}
.site-foot li{margin-bottom:11px}
.site-foot a{font-size:.9375rem;color:rgba(237,241,240,.82);transition:color .2s var(--ease)}
.site-foot a:hover{color:#fff}
.foot-brand img{width:150px;margin-bottom:20px}
.foot-tag{font-family:var(--serif);font-size:1.375rem;color:#fff;line-height:1.25}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;align-items:center;
  margin-top:clamp(44px,6vw,72px);padding-top:26px;border-top:1px solid rgba(255,255,255,.14);font-size:.8125rem}
.foot-bottom a{font-size:.8125rem}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr}}

/* ---------- Page hero (inner pages) ---------- */
.page-hero{position:relative;padding-top:clamp(48px,6vw,80px);padding-bottom:clamp(40px,5vw,64px);overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero-bg{position:absolute;top:-40%;right:-18%;width:min(900px,100%);opacity:.28;pointer-events:none;
  -webkit-mask-image:radial-gradient(62% 62% at 62% 46%,#000,transparent 78%);
  mask-image:radial-gradient(62% 62% at 62% 46%,#000,transparent 78%)}
.page-hero .inner{position:relative;display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:clamp(28px,5vw,64px);align-items:end}
.page-hero h1{margin-top:20px}
@media (max-width:860px){.page-hero .inner{grid-template-columns:1fr}}

.crumbs{font-size:.8125rem;color:var(--ink-3);display:flex;gap:8px;align-items:center}
.crumbs a:hover{color:var(--teal)}

/* ---------- Reveal ---------- */
.rv{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

/* ---------- Utilities ---------- */
.mt8{margin-top:8px}.mt16{margin-top:16px}.mt24{margin-top:24px}.mt32{margin-top:32px}.mt48{margin-top:48px}
.mb16{margin-bottom:16px}.mb24{margin-bottom:24px}.mb32{margin-bottom:32px}.mb48{margin-bottom:48px}
.tag{display:inline-block;font-size:.75rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
  color:var(--teal);border:1px solid var(--line-strong);border-radius:999px;padding:5px 12px}
.skip{position:absolute;left:-9999px;top:0;background:var(--teal);color:#fff;padding:12px 18px;z-index:100}
.skip:focus{left:12px;top:12px}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:2px}

/* ---------- 4-up capability grid ---------- */
.caps--4{grid-template-columns:repeat(4,1fr)}
@media (max-width:1080px){.caps--4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.caps--4{grid-template-columns:1fr}}

/* ---------- Detailed focus rows ---------- */
.focus{border-top:1px solid var(--line)}
.focus-row{
  display:grid;grid-template-columns:64px minmax(0,.85fr) minmax(0,1.45fr);
  gap:clamp(16px,3vw,44px);padding:clamp(28px,3.4vw,44px) 0;border-bottom:1px solid var(--line);
}
.focus-row h3{font-family:var(--serif);font-size:clamp(1.5rem,2.4vw,2rem);line-height:1.14}
.focus-row .num{color:var(--copper)}
.focus-row p{font-size:1rem;color:var(--ink-2)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chips span{font-size:.8125rem;color:var(--ink-2);background:var(--paper-2);border:1px solid var(--line);border-radius:999px;padding:5px 12px}
@media (max-width:820px){
  .focus-row{grid-template-columns:44px 1fr;gap:14px}
  .focus-row > div:last-child{grid-column:2}
}

/* ---------- Offer / tier cards ---------- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,2vw,26px)}
.tier{border:1px solid var(--line);border-radius:var(--r);padding:clamp(26px,2.6vw,36px);background:#fff;display:flex;flex-direction:column}
.tier h4{font-family:var(--serif);font-size:1.625rem;margin-bottom:10px}
.tier .tag{margin-bottom:20px}
.tier ul{margin-top:20px;border-top:1px solid var(--line)}
.tier li{padding:11px 0 11px 20px;border-bottom:1px solid var(--line);font-size:.9063rem;color:var(--ink-2);position:relative}
.tier li::before{content:"";position:absolute;left:0;top:19px;width:9px;height:1px;background:var(--copper)}
@media (max-width:940px){.tiers{grid-template-columns:1fr}}

/* ---------- Job list ---------- */
.jobs{border-top:1px solid var(--line)}
.job{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.7fr) minmax(0,.7fr) auto;gap:20px;
  align-items:center;padding:24px 0;border-bottom:1px solid var(--line);transition:padding-left .3s var(--ease)}
.job:hover{padding-left:8px}
.job h4{font-family:var(--serif);font-size:1.375rem}
.job span{font-size:.875rem;color:var(--ink-2)}
@media (max-width:780px){.job{grid-template-columns:1fr auto;row-gap:6px}.job h4{grid-column:1/-1}}

/* ---------- Article list ---------- */
.posts{border-top:1px solid var(--line)}
.post{display:grid;grid-template-columns:150px minmax(0,1fr) auto;gap:clamp(16px,3vw,40px);
  padding:clamp(24px,3vw,36px) 0;border-bottom:1px solid var(--line);align-items:start;transition:padding-left .3s var(--ease)}
.post:hover{padding-left:8px}
.post h3{font-family:var(--serif);font-size:clamp(1.375rem,2.2vw,1.75rem);line-height:1.18;margin-bottom:10px}
.post p{font-size:.9375rem;color:var(--ink-2);max-width:70ch}
.post .meta{font-size:.75rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
@media (max-width:820px){.post{grid-template-columns:1fr}.post .arrow-link{display:none}}

/* ---------- Notice ---------- */
.notice{background:var(--paper-2);border:1px solid var(--line);border-left:2px solid var(--copper);
  border-radius:var(--r);padding:18px 22px;font-size:.9063rem;color:var(--ink-2)}

/* ---------- Tagline lockup (Engineered Intelligence × Engineered Trust) ---------- */
.x{color:var(--copper);font-style:normal;font-feature-settings:"tnum"}
.d1--pair{font-size:clamp(2.15rem,4.4vw,3.9rem);line-height:1.08}
.foot-tag .x{color:var(--copper-soft)}
.pull .x{color:var(--copper)}
@media (max-width:420px){.d1--pair{font-size:1.95rem}}