/* Momentus — editorial style (matches Claude Design "Momentus Landing v4"): off-white paper, navy bands, large serif display, tracked labels, hairline rules. */
:root{
  --paper:#FAFAF8;
  --band:#F1F1EE;
  --navy:#0E1A2E;
  --navy-2:#16243C;
  --ink:#111418;
  --grey:#5E6470;
  --grey-2:#8E9298;
  --line:#D9D9D4;
  --track:#E4E4DF;
  --on-navy:#F4F4F1;
  --on-navy-2:#A3ADBE;
  --sky:#8FA6D6;
  --ph:#FFF1B8;
  --serif:"Newsreader","Iowan Old Style","Georgia",serif;
  --sans:"Hanken Grotesk",system-ui,-apple-system,"Segoe UI",sans-serif;
  --wrap:1200px;
  --gutter:clamp(16px,4vw,48px);
}
*{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:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,p,ul,ol,figure,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
a{color:inherit;text-underline-offset:3px}
:focus-visible{outline:2px solid currentColor;outline-offset:4px;border-radius:4px}
section[id]{scroll-margin-top:84px}
.ph{background:var(--ph);color:#000;padding:0 4px;border-radius:3px;font-weight:600}
.skip{position:absolute;left:-9999px;top:8px;background:#fff;color:#000;padding:8px 12px;z-index:20}
.skip:focus{left:8px}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}

/* header */
.site-head{position:sticky;top:0;z-index:10;background:rgba(250,250,248,.94);backdrop-filter:saturate(1.2) blur(8px);-webkit-backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid transparent}
.site-head.on-navy{background:rgba(14,26,46,.96);color:var(--on-navy)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px 32px;min-height:84px;flex-wrap:wrap;padding-top:10px;padding-bottom:10px}
.wordmark{display:grid;gap:3px;text-decoration:none;color:inherit;line-height:1}
.wordmark b{font-family:var(--serif);font-weight:600;font-size:25px;letter-spacing:.06em}
.wordmark small{font-size:9.5px;letter-spacing:.32em;font-weight:600;opacity:.75;padding-left:1px}
.nav{display:flex;align-items:center;gap:6px 30px;flex-wrap:wrap}
.nav a{text-decoration:none;font-size:15px;font-weight:500;opacity:.88}
.nav a:hover{opacity:1;text-decoration:underline}
.pill{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:var(--sans);font-weight:600;font-size:15px;line-height:1;padding:14px 22px;border-radius:999px;text-decoration:none;border:1px solid currentColor;transition:background .15s,color .15s}
.nav .pill{opacity:1;padding:12px 20px}
.pill:hover{background:var(--navy);color:var(--on-navy);border-color:var(--navy)}
.on-navy .pill:hover,.navy .pill:hover{background:var(--on-navy);color:var(--navy);border-color:var(--on-navy)}
.pill.solid{background:var(--navy);color:var(--on-navy);border-color:var(--navy)}
.pill.solid:hover{background:var(--ink)}
.pill.white{background:var(--on-navy);color:var(--navy);border-color:var(--on-navy);font-size:17px;padding:20px 32px}
.pill.white:hover{background:#fff}
@media (max-width:820px){
  .site-head .wrap{min-height:0}
  .nav{width:100%;gap:2px 18px}
  .nav a{font-size:14px}
  .nav .pill{display:none}
}

/* type */
.label{font-size:12.5px;letter-spacing:.24em;text-transform:uppercase;font-weight:600;color:var(--grey)}
.navy .label{color:var(--on-navy-2)}
.display{font-family:var(--serif);font-weight:400;font-size:clamp(46px,7.6vw,112px);line-height:.98;letter-spacing:-.025em}
.h2{font-family:var(--serif);font-weight:400;font-size:clamp(38px,5.4vw,76px);line-height:1.02;letter-spacing:-.02em}
.h3{font-family:var(--serif);font-weight:400;font-size:clamp(24px,2.4vw,32px);line-height:1.15;letter-spacing:-.01em}
.thesis{font-family:var(--serif);font-weight:400;font-size:clamp(32px,4.6vw,64px);line-height:1.08;letter-spacing:-.02em;max-width:22ch}
.thesis span{color:var(--grey-2)}
.lede{font-size:clamp(17px,1.5vw,20px);line-height:1.6;color:var(--grey);max-width:52ch}
.navy .lede{color:var(--on-navy-2)}
.small{font-size:15px;color:var(--grey)}
.navy .small{color:var(--on-navy-2)}

/* sections */
.sec{padding:clamp(80px,11vw,152px) 0}
.band{background:var(--band)}
.navy{background:var(--navy);color:var(--on-navy)}
.head-row{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:24px 64px;align-items:end;margin-bottom:clamp(40px,6vw,72px)}
.head-row > :first-child{display:grid;gap:18px}
@media (max-width:860px){.head-row{grid-template-columns:1fr}}

/* hero */
.hero{padding:clamp(56px,8vw,112px) 0 clamp(72px,9vw,128px)}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:48px 64px;align-items:center}
.hero .label{margin-bottom:28px}
.hero .lede{margin-top:32px}
.hero-foot{display:flex;flex-wrap:wrap;gap:20px 32px;align-items:center;margin-top:44px}
@media (max-width:940px){.hero .wrap{grid-template-columns:1fr}}

/* charts: shared */
.chart text{font-family:var(--sans)}
.chart .serif{font-family:var(--serif)}
.ring-track{stroke:var(--track)}
.navy .ring-track{stroke:rgba(255,255,255,.14)}
.fig-cap{font-size:14px;color:var(--grey);margin-top:16px;max-width:40ch}
.navy .fig-cap{color:var(--on-navy-2)}
@media (prefers-reduced-motion:no-preference){
  .draw{stroke-dashoffset:var(--len);animation:draw 1.6s cubic-bezier(.3,0,.2,1) .3s forwards}
}
@keyframes draw{to{stroke-dashoffset:0}}

/* hero dial */
.dial{max-width:440px;width:100%;justify-self:end}
@media (max-width:940px){.dial{justify-self:start;max-width:360px}}

/* who we serve */
.serve{display:flex;flex-wrap:wrap;gap:10px 40px;align-items:baseline;border-top:1px solid var(--line);padding-top:22px;margin-top:clamp(56px,7vw,96px)}
.serve b{font-weight:600}
.serve span{color:var(--grey)}

/* research tiles */
.tiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--line);background:var(--paper)}
.tile{padding:28px 26px 30px;border-right:1px solid var(--line);display:grid;gap:18px;align-content:start}
.tile:last-child{border-right:0}
.tile .label{font-size:11.5px}
.tile svg{width:132px;height:132px}
.tile .num{font-family:var(--serif);font-size:clamp(44px,4.4vw,60px);line-height:1;letter-spacing:-.02em}
.tile p{font-size:15.5px;color:var(--grey);line-height:1.5}
.tile .src{font-size:12.5px;color:var(--grey-2);line-height:1.45}
@media (max-width:1040px){.tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.tile:nth-child(2){border-right:0}.tile:nth-child(-n+2){border-bottom:1px solid var(--line)}}
@media (max-width:560px){.tiles{grid-template-columns:1fr}.tile{border-right:0;border-bottom:1px solid var(--line)}.tile:last-child{border-bottom:0}}
.sources{margin-top:28px;font-size:13px;color:var(--grey-2);display:grid;gap:4px;max-width:110ch}
.sources a{color:var(--grey)}

/* the line (split ring) */
.line-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px 72px;align-items:start}
@media (max-width:940px){.line-grid{grid-template-columns:1fr}}
.split-fig{display:grid;grid-template-columns:minmax(0,1fr) 220px minmax(0,1fr);gap:20px;align-items:center;margin-top:48px}
.split-fig ul{display:grid;gap:12px;font-size:15.5px}
.split-fig ul li{border-top:1px solid rgba(255,255,255,.16);padding-top:10px}
.split-fig .l{text-align:right}
.split-fig h3{font-family:var(--sans);font-size:12.5px;letter-spacing:.24em;text-transform:uppercase;font-weight:600;margin-bottom:14px}
.split-fig .l h3{color:var(--sky)}
@media (max-width:620px){.split-fig{grid-template-columns:1fr;justify-items:start}.split-fig .l{text-align:left}.split-fig svg{order:-1;width:180px}}

/* conversation */
.convo{background:var(--navy-2);border:1px solid rgba(255,255,255,.1);border-radius:22px;padding:24px;display:grid;gap:12px}
.convo .when{font-size:13px;color:var(--on-navy-2);text-align:center;letter-spacing:.08em}
.msg{max-width:86%;padding:12px 16px;border-radius:18px;font-size:15.5px;line-height:1.45}
.msg.them{background:var(--on-navy);color:var(--ink);justify-self:end;border-bottom-right-radius:6px}
.msg.ai{background:rgba(255,255,255,.08);color:var(--on-navy);justify-self:start;border-bottom-left-radius:6px;border:1px solid rgba(255,255,255,.12)}
.msg.ai.handoff{background:var(--sky);color:var(--navy);border-color:var(--sky)}
.convo-note{font-size:13px;color:var(--on-navy-2);margin-top:14px}
.paper .convo{background:var(--navy)}

/* approach steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;counter-reset:s}
.steps li{counter-increment:s;display:grid;gap:12px;align-content:start;padding-right:28px;position:relative}
.steps li::before{content:counter(s);width:40px;height:40px;border-radius:50%;background:var(--navy);color:var(--on-navy);display:grid;place-items:center;font-family:var(--serif);font-size:18px;position:relative;z-index:1}
.steps li::after{content:"";position:absolute;left:48px;right:8px;top:20px;border-top:1px solid var(--line)}
.steps li:last-child::after{display:none}
.steps .h3{margin-top:14px}
.steps .label{font-size:11.5px}
@media (max-width:900px){
  .steps{grid-template-columns:1fr 1fr;gap:44px 0}
  .steps li:nth-child(2)::after{display:none}
}
@media (max-width:560px){.steps{grid-template-columns:1fr}.steps li::after{display:none}}

.launch{display:grid;grid-template-columns:260px minmax(0,1fr);gap:40px 64px;align-items:center;margin-top:clamp(64px,8vw,104px);border-top:1px solid var(--line);padding-top:clamp(48px,6vw,72px)}
.launch ol{display:grid;gap:0;border-top:1px solid var(--line)}
.launch ol li{display:grid;grid-template-columns:110px minmax(0,1fr);gap:16px;padding:16px 0;border-bottom:1px solid var(--line);align-items:baseline}
.launch ol b{font-family:var(--serif);font-weight:400;font-size:20px}
.launch .key{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:10px;vertical-align:1px}
@media (max-width:820px){.launch{grid-template-columns:1fr}.launch svg{max-width:240px}}

/* memberships */
.tiers{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.tier{border:1px solid var(--line);background:var(--paper);padding:32px 26px 30px;display:grid;gap:18px;align-content:start}
.tier.flag{background:var(--navy);color:var(--on-navy);border-color:var(--navy)}
.tier .name{font-family:var(--serif);font-size:34px;line-height:1;letter-spacing:-.015em}
.tier .core{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0;font-family:var(--serif);font-size:20px;line-height:1.25}
.tier.flag .core{border-color:rgba(255,255,255,.18)}
.tier ul{display:grid;gap:10px;font-size:15px;padding-left:18px;list-style:disc}
.tier.flag ul,.tier.flag .small{color:var(--on-navy-2)}
.tier .pill{margin-top:8px;font-size:14px;padding:13px 18px}
.tier .label{font-size:11px}
.tier.flag .label{color:var(--on-navy-2)}
@media (max-width:1040px){.tiers{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.tiers{grid-template-columns:1fr}}
.rings{display:grid;grid-template-columns:200px minmax(0,1fr);gap:28px;align-items:center}
.rings ul{display:grid;gap:8px;font-size:15px;color:var(--grey)}
.rings ul b{color:var(--ink);font-weight:600}
@media (max-width:560px){.rings{grid-template-columns:1fr}}

/* principles */
.principles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:40px 40px}
.principles li{border-top:1px solid var(--ink);padding-top:18px;display:grid;gap:10px;align-content:start}
.principles .h3{font-size:24px}
.principles p{font-size:15.5px;color:var(--grey)}
@media (max-width:1000px){.principles{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.principles{grid-template-columns:1fr}}

/* partners */
.partners{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px 72px;align-items:center}
.people{display:flex;gap:40px;flex-wrap:wrap}
.person{display:grid;gap:8px}
.person .h3{margin-top:14px}
.avatar{width:200px;height:200px;border-radius:50%;border:1px solid var(--ink);display:grid;place-items:center;font-family:var(--serif);font-size:56px;letter-spacing:.02em;background:var(--paper);box-shadow:inset 0 0 0 8px var(--band)}
.person:nth-child(2){margin-top:56px}
@media (max-width:940px){.partners{grid-template-columns:1fr}}
@media (max-width:520px){.avatar{width:150px;height:150px;font-size:42px}.person:nth-child(2){margin-top:0}}

/* faq */
.faq-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px 72px;align-items:start}
@media (max-width:940px){.faq-grid{grid-template-columns:1fr}}
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;font-size:18px;font-weight:500;padding:22px 40px 22px 0;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:18px;font-size:24px;font-weight:300;color:var(--grey)}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 0 24px;color:var(--grey);max-width:60ch}

/* contact */
.talk .display{margin-bottom:clamp(48px,6vw,80px)}
.talk-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px 72px;align-items:start}
@media (max-width:940px){.talk-grid{grid-template-columns:1fr}}
.talk .lede{color:var(--on-navy);font-size:clamp(18px,1.7vw,22px)}
.talk .contact{margin-top:28px;display:grid;gap:6px;color:var(--on-navy-2);font-size:16px}
.talk ol{border-top:1px solid rgba(255,255,255,.18);counter-reset:c}
.talk ol li{counter-increment:c;display:grid;grid-template-columns:44px minmax(0,1fr);gap:12px;padding:20px 0;border-bottom:1px solid rgba(255,255,255,.18);color:var(--on-navy-2)}
.talk ol li::before{content:counter(c);font-family:var(--serif);font-size:22px;color:var(--on-navy);line-height:1.2}
.talk ol li b{color:var(--on-navy);font-weight:600;display:block}
.talk .end{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;margin-top:32px}

/* page heads (inner pages) */
.page-head{padding:clamp(56px,8vw,112px) 0 clamp(48px,6vw,72px)}
.page-head .display{font-size:clamp(46px,7vw,96px);margin-top:20px}
.page-head .lede{margin-top:28px}

/* feature table */
.table-wrap{overflow-x:auto;border-top:1px solid var(--ink)}
.feature-table{width:100%;border-collapse:collapse;min-width:680px}
.feature-table th,.feature-table td{text-align:left;vertical-align:top;padding:18px 16px 18px 0;border-bottom:1px solid var(--line)}
.feature-table th{font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;font-weight:600;color:var(--grey)}
.feature-table td:first-child{font-family:var(--serif);font-size:20px;width:30%}
.feature-table td:nth-child(2){color:var(--grey);font-size:15.5px}
.feature-table td:last-child{white-space:nowrap;font-size:14px;font-weight:600}

.checks{display:grid;gap:0;border-top:1px solid rgba(255,255,255,.18)}
.checks li{padding:18px 0;border-bottom:1px solid rgba(255,255,255,.18);color:var(--on-navy-2)}
.checks li b{color:var(--on-navy);font-weight:600}

/* prose */
.prose{max-width:70ch}
.prose h2{font-family:var(--serif);font-weight:400;font-size:30px;margin:44px 0 12px}
.prose p,.prose li{color:var(--grey)}
.prose p + p{margin-top:14px}
.notice{background:var(--ph);color:#000;padding:14px 18px;font-size:15px;margin-bottom:28px}
.contact-card{border:1px solid var(--line);background:var(--paper);padding:clamp(24px,4vw,40px);display:grid;gap:16px;align-content:start}
.contact-card .addr{font-family:var(--serif);font-size:clamp(22px,2.6vw,30px);word-break:break-word}

/* footer */
.site-foot{background:#0A1322;color:var(--on-navy-2);padding:56px 0 40px;font-size:14.5px}
.site-foot .wrap{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(2,minmax(0,1fr));gap:32px}
.site-foot .wordmark{color:var(--on-navy)}
.site-foot a{text-decoration:none}
.site-foot a:hover{color:var(--on-navy);text-decoration:underline}
.site-foot ul{display:grid;gap:8px}
.site-foot .h{color:var(--on-navy);font-size:12px;letter-spacing:.22em;text-transform:uppercase;font-weight:600;margin-bottom:12px}
.site-foot .legal{grid-column:1/-1;border-top:1px solid #22304a;padding-top:20px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;font-size:13.5px}
@media (max-width:760px){.site-foot .wrap{grid-template-columns:1fr 1fr}.site-foot .wrap > div:first-child{grid-column:1/-1}}
.tile p.num{color:var(--ink)}
.split-fig.wide{grid-template-columns:minmax(0,1fr) 260px minmax(0,1fr);gap:40px;margin-top:clamp(64px,8vw,104px);border-top:1px solid rgba(255,255,255,.16);padding-top:clamp(48px,6vw,72px)}
.split-fig.wide ul{grid-template-columns:1fr;max-width:340px}
.split-fig.wide .l ul{margin-left:auto}
@media (max-width:620px){.split-fig.wide{grid-template-columns:1fr}.split-fig.wide .l ul{margin-left:0}}
.rings svg{width:100%;max-width:200px}
.launch svg{width:100%;max-width:260px}
.tile svg{max-width:132px}
.tiers.three{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){.tiers.three{grid-template-columns:1fr}}