:root{
  --navy:#1A2B52; --navy-deep:#111E3F; --ink:#222C46;
  --gold:#E7AA3E; --gold-soft:#F0C070;
  --slate:#5A6786; --muted:#7B86A0;
  --bg:#FFFFFF; --tint:#F6F8FB; --line:#E4E8F1;
  --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:"IBM Plex Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  font-size:17px; line-height:1.7; -webkit-font-smoothing:antialiased;
}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 28px}
.serif{font-family:"IBM Plex Serif",Georgia,"Times New Roman",serif}
.eyebrow{
  font-family:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  font-size:.72rem; letter-spacing:.18em; text-transform:uppercase;
  color:var(--slate); display:inline-flex; align-items:center; gap:.6em; margin:0 0 1.1rem;
}
.eyebrow::before{content:""; width:7px; height:7px; border-radius:50%; background:var(--gold);
  box-shadow:0 0 0 4px rgba(231,170,62,.16)}

/* header */
.site-head{position:sticky; top:0; z-index:30; background:rgba(255,255,255,.86);
  backdrop-filter:saturate(160%) blur(10px); border-bottom:1px solid var(--line)}
.head-row{display:flex; align-items:center; justify-content:space-between; height:68px}
.brand img{height:26px; width:auto}
.nav{display:flex; gap:30px; align-items:center}
.nav a{font-size:.82rem; letter-spacing:.04em; text-decoration:none; color:var(--slate);
  padding:6px 0; position:relative; transition:color .18s}
.nav a:hover{color:var(--navy)}
.nav a.cta{color:var(--navy); border:1px solid var(--navy); border-radius:999px;
  padding:7px 16px; transition:.18s}
.nav a.cta:hover{background:var(--navy); color:#fff}
.menu-btn{display:none}

/* hero */
.hero{padding:clamp(56px,9vw,108px) 0 clamp(40px,6vw,72px); position:relative; overflow:hidden}
.hero-grid{display:grid; grid-template-columns:1.35fr .9fr; gap:48px; align-items:center}
.hero h1{font-weight:500; color:var(--navy);
  font-size:clamp(2.1rem,4.6vw,3.5rem); line-height:1.08; letter-spacing:-.015em; margin:.2rem 0 1.3rem}
.hero p.lede{font-size:1.12rem; color:var(--ink); max-width:46ch; margin:0 0 2rem}
.actions{display:flex; gap:14px; flex-wrap:wrap}
.btn{display:inline-block; text-decoration:none; font-size:.92rem; letter-spacing:.01em;
  padding:13px 22px; border-radius:999px; transition:.2s; border:1px solid transparent}
.btn-primary{background:var(--navy); color:#fff}
.btn-primary:hover{background:var(--navy-deep); transform:translateY(-1px)}
.btn-ghost{border-color:var(--line); color:var(--navy)}
.btn-ghost:hover{border-color:var(--navy)}

/* wave signature */
.hero-art{display:flex; justify-content:center; align-items:center}
.wave-art{width:min(100%,400px); height:auto; overflow:visible}
.wave-line{stroke:#3C4A6E; stroke-width:1.6; stroke-linecap:round; opacity:0;
  stroke-dasharray:1600; stroke-dashoffset:1600;
  animation:waveDraw 2.5s ease-in-out .3s forwards}
.wave-node{fill:var(--gold); opacity:0; transform-box:fill-box; transform-origin:center;
  animation:waveNodeIn .6s cubic-bezier(.2,.7,.3,1) 1.5s forwards}
.wave-glow{fill:var(--gold); opacity:0; filter:url(#nodeGlow);
  animation:waveGlowIn 1s ease 1.7s forwards}
@keyframes waveDraw{to{stroke-dashoffset:0; opacity:.7}}
@keyframes waveNodeIn{from{opacity:0; transform:scale(.2)} to{opacity:1; transform:scale(1)}}
@keyframes waveGlowIn{to{opacity:.22}}

/* sections */
section{padding:clamp(48px,7vw,86px) 0}
.tint{background:var(--tint); border-top:1px solid var(--line); border-bottom:1px solid var(--line)}
.sec-head{max-width:60ch; margin-bottom:42px}
.sec-head h2{font-weight:500; color:var(--navy); font-size:clamp(1.55rem,3vw,2.15rem);
  line-height:1.18; letter-spacing:-.01em; margin:0}
.sec-head p{color:var(--slate); margin:.9rem 0 0}

/* offerings */
.cards{display:grid; grid-template-columns:1fr 1fr; gap:28px}
.card{background:#fff; border:1px solid var(--line); border-radius:14px; padding:30px 30px 32px;
  transition:.22s; position:relative}
.card:hover{border-color:#C7CFE0; box-shadow:0 14px 40px -28px rgba(26,43,82,.5); transform:translateY(-2px)}
.card .eyebrow{margin-bottom:.85rem}
.card h3{font-family:"IBM Plex Serif",serif; font-weight:500; color:var(--navy);
  font-size:1.32rem; margin:0 0 .7rem; line-height:1.25}
.card p{margin:0; color:var(--ink); font-size:1rem}

/* approach */
.approach-grid{display:grid; grid-template-columns:.8fr 1.2fr; gap:46px; align-items:start}
.approach-grid h2{font-weight:500; color:var(--navy); font-size:clamp(1.55rem,3vw,2.15rem);
  line-height:1.18; letter-spacing:-.01em; margin:0}
.approach-body p{margin:0 0 1.1rem; color:var(--ink)}
.approach-body p:last-child{margin-bottom:0}

/* wp teaser */
.teaser{display:flex; justify-content:space-between; align-items:center; gap:30px; flex-wrap:wrap}
.teaser p{margin:0; max-width:54ch; color:var(--ink)}
.arrow-link{font-family:"IBM Plex Mono",monospace; font-size:.82rem; letter-spacing:.08em;
  text-transform:uppercase; text-decoration:none; color:var(--navy); white-space:nowrap;
  border-bottom:1px solid var(--gold); padding-bottom:3px; transition:.18s}
.arrow-link:hover{color:var(--gold)}

/* contact */
.contact-card{background:var(--navy); color:#Eaeefa; border-radius:18px;
  padding:clamp(36px,5vw,60px); display:grid; grid-template-columns:1.1fr .9fr; gap:40px; align-items:center}
.contact-card .eyebrow{color:#9fb0d6}
.contact-card .eyebrow::before{box-shadow:0 0 0 4px rgba(231,170,62,.22)}
.contact-card h2{font-family:"IBM Plex Serif",serif; font-weight:500; color:#fff;
  font-size:clamp(1.6rem,3vw,2.3rem); margin:0 0 .8rem; line-height:1.15}
.contact-card p{margin:0; color:#C4CFE8}
.contact-right{display:flex; flex-direction:column; gap:14px; align-items:flex-start}
.btn-gold{background:var(--gold); color:#23314f; font-weight:600}
.btn-gold:hover{background:var(--gold-soft); transform:translateY(-1px)}
.loc{font-family:"IBM Plex Mono",monospace; font-size:.8rem; letter-spacing:.06em; color:#9fb0d6}

/* footer */
.site-foot{background:var(--navy-deep); color:#A9B5D2; padding:42px 0}
.foot-row{display:flex; justify-content:space-between; align-items:center; gap:24px; flex-wrap:wrap}
.foot-mark{font-family:"IBM Plex Sans",sans-serif; font-weight:600; letter-spacing:.34em;
  color:#fff; font-size:1rem; display:inline-flex; align-items:center; gap:.7em}
.foot-mark::before{content:""; width:8px; height:8px; border-radius:50%; background:var(--gold)}
.foot-meta{font-size:.82rem; line-height:1.7}
.foot-meta a{color:var(--gold-soft); text-decoration:none}
.foot-meta a:hover{text-decoration:underline}

/* white papers page */
.page-head{padding:clamp(56px,8vw,96px) 0 clamp(28px,4vw,44px)}
.page-head h1{font-weight:500; color:var(--navy); font-size:clamp(2rem,4.2vw,3rem);
  letter-spacing:-.015em; margin:.2rem 0 1.2rem; line-height:1.1}
.page-head p{max-width:62ch; color:var(--ink); margin:0 0 1rem; font-size:1.08rem}
.papers{padding-top:8px; padding-bottom:clamp(60px,8vw,100px)}
.paper{display:grid; grid-template-columns:170px 1fr; gap:30px; padding:30px 0;
  border-top:1px solid var(--line)}
.paper:last-child{border-bottom:1px solid var(--line)}
.paper-meta{font-family:"IBM Plex Mono",monospace; font-size:.74rem; letter-spacing:.1em;
  text-transform:uppercase; color:var(--slate); padding-top:.35rem}
.paper-meta .tag{display:inline-block; margin-top:10px; color:var(--gold);
  border:1px solid rgba(231,170,62,.5); border-radius:999px; padding:3px 10px; letter-spacing:.08em}
.paper h3{font-family:"IBM Plex Serif",serif; font-weight:500; color:var(--navy);
  font-size:1.3rem; line-height:1.3; margin:0 0 .55rem}
.paper p{margin:0 0 1rem; color:var(--ink); font-size:1rem; max-width:62ch}
.paper a.dl{font-family:"IBM Plex Mono",monospace; font-size:.8rem; letter-spacing:.06em;
  text-transform:uppercase; text-decoration:none; color:var(--navy); border-bottom:1px solid var(--gold);
  padding-bottom:2px; transition:.18s}
.paper a.dl:hover{color:var(--gold)}
.paper .pending{font-family:"IBM Plex Mono",monospace; font-size:.8rem; letter-spacing:.04em;
  color:var(--muted)}

/* focus + motion */
a:focus-visible,.btn:focus-visible{outline:2px solid var(--gold); outline-offset:3px; border-radius:6px}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .wave-line{opacity:.7; stroke-dashoffset:0; animation:none}
  .wave-node{opacity:1; transform:none; animation:none}
  .wave-glow{opacity:.22; animation:none}
}

/* responsive */
@media (max-width:860px){
  .hero-grid{grid-template-columns:1fr; gap:30px}
  .hero-art{justify-content:flex-start}
  .wave-art{width:min(100%,300px)}
  .cards{grid-template-columns:1fr}
  .approach-grid{grid-template-columns:1fr; gap:18px}
  .contact-card{grid-template-columns:1fr; gap:26px}
  .paper{grid-template-columns:1fr; gap:8px}
  .nav{display:none}
  .nav.open{display:flex; position:absolute; top:68px; left:0; right:0; flex-direction:column;
    background:#fff; border-bottom:1px solid var(--line); padding:18px 28px; gap:18px}
  .menu-btn{display:inline-flex; flex-direction:column; gap:5px; background:none; border:0;
    cursor:pointer; padding:8px}
  .menu-btn span{width:24px; height:2px; background:var(--navy); display:block}
}