/* Tech Saga Solutions — Studio Paper
   paper #F4F1EA · ink #161513 · grey #8A8680 · hairline #D9D4C9 · vermilion #D4462A (sparingly)
   Newsreader (headlines) · Inter Tight (body/UI) · IBM Plex Mono (labels, numbers) */
:root{
  --paper:#F4F1EA; --paper-2:#EDE9DF; --ink:#161513; --ink-2:#2A2825;
  --grey:#8A8680;           /* large type & decoration only (3.2:1) */
  --muted:#5E5A54;          /* body-size secondary text (6.1:1 on paper) */
  --hair:#D9D4C9; --hair-ink:#3A3833; --on-ink-muted:#A8A39A;
  --verm:#D4462A;
  --serif:"Newsreader",Georgia,"Times New Roman",serif;
  --sans:"Inter Tight","Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --wrap:1200px; --gut:clamp(20px,4.5vw,56px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.6 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{max-width:100%}
a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--hair);text-underline-offset:3px;text-decoration-thickness:1px;transition:text-decoration-color .15s,color .15s}
a:hover{text-decoration-color:var(--verm)}
:focus-visible{outline:2px solid var(--verm);outline-offset:3px;border-radius:1px}
h1,h2,h3{font-family:var(--serif);font-weight:400;letter-spacing:-.012em;margin:0;color:var(--ink);font-optical-sizing:auto}
h1 em,h2 em{font-style:italic}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
.container{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--paper);padding:8px 14px;z-index:100;font:500 14px var(--sans)}
.skip:focus{left:8px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}

/* ---------- labels ---------- */
.eyebrow,.pill,.tag,.case-tag,.client,.small,.unit,.price-note,.tz-axis,.form-note,.legal,label,.stack-group h3,.code-top em{font-family:var(--mono);font-weight:400;letter-spacing:.14em;text-transform:uppercase;font-size:.72rem;color:var(--muted)}
.eyebrow{display:inline-flex;align-items:center;gap:12px;margin-bottom:22px}
.eyebrow::before{content:"";width:28px;height:1px;background:currentColor;opacity:.6}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(244,241,234,.94);backdrop-filter:saturate(1.1) blur(6px);-webkit-backdrop-filter:saturate(1.1) blur(6px);border-bottom:1px solid var(--hair)}
.nav{display:flex;align-items:center;gap:32px;height:72px}
.brand{text-decoration:none;display:inline-flex;align-items:baseline}
.wordmark{font-family:var(--serif);font-size:1.35rem;font-weight:400;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.nav-links{display:flex;gap:28px;align-items:center;list-style:none;margin:0 0 0 auto}
.nav-links a{font-size:.92rem;color:var(--ink);text-decoration:none;padding:6px 0;border-bottom:1px solid transparent}
.nav-links a:hover{border-bottom-color:var(--verm)}
.nav-links .mobile-cta{display:none}
.menu-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--ink);color:var(--ink);padding:8px 10px;cursor:pointer;border-radius:0;line-height:0}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font:500 .95rem/1 var(--sans);padding:15px 22px;border:1px solid var(--ink);border-radius:0;text-decoration:none;cursor:pointer;transition:background .15s,color .15s,border-color .15s;white-space:nowrap}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--ink-2);color:var(--paper)}
.btn-ghost,.btn-outline{background:transparent;color:var(--ink)}
.btn-ghost:hover,.btn-outline:hover{background:var(--ink);color:var(--paper)}
.btn-sm{padding:11px 16px;font-size:.88rem}
.btn svg{transition:transform .15s}
.btn:hover svg{transform:translateX(3px)}

/* ---------- hero ---------- */
.hero{position:relative;padding:clamp(48px,7vw,96px) 0 clamp(56px,7vw,96px)}
.hero-grid{display:none}
.hero .container{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:clamp(32px,5vw,72px);align-items:end}
.pill{display:inline-flex;align-items:center;gap:10px;margin-bottom:28px}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--verm)}
.hero h1{font-size:clamp(2.5rem,5.4vw,4.6rem);line-height:1.02;letter-spacing:-.025em;margin-bottom:32px}
.hero h1 .grad-text{color:var(--grey)}
.hero h1 .grad-text em{color:var(--verm);font-style:italic}
.hero .lead{font-size:1.12rem;max-width:560px;color:var(--ink);padding-top:22px;border-top:1px solid var(--hair);margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:36px}
.hero-points{list-style:none;display:flex;flex-wrap:wrap;gap:10px 28px;font-family:var(--mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points svg{width:13px;height:13px;color:var(--ink)}
.code-card{border-top:1px solid var(--ink);border-bottom:1px solid var(--hair);padding:0 0 18px;align-self:end}
.code-top{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--hair);margin-bottom:16px}
.code-top span{display:none}
.code-top em{font-style:normal;margin-left:auto}
.code-top::before{content:"Fig. 1";font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.code-card pre{margin:0;font:400 .8rem/1.75 var(--mono);color:var(--ink);overflow-x:auto;white-space:pre}
.c-c{color:var(--muted)}.c-k{color:var(--ink);font-weight:500}.c-f{color:var(--ink);text-decoration:underline;text-decoration-color:var(--hair);text-underline-offset:3px}.c-s{color:var(--ink-2)}.c-n{color:var(--verm)}

/* ---------- clients strip ---------- */
.trusted{border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);padding:22px 0}
.trusted .container{display:flex;align-items:baseline;gap:20px 40px;flex-wrap:wrap}
.trusted p{margin:0;font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.client-list{list-style:none;display:flex;gap:40px;flex-wrap:wrap}
.client-list li{font-family:var(--serif);font-size:1.6rem;line-height:1.2;color:var(--ink)}

/* ---------- sections ---------- */
.section{padding:clamp(72px,10vw,128px) 0;border-top:1px solid var(--hair)}
.trusted+.section{border-top:0}
.section.soft{background:var(--paper)}
.section-head{max-width:780px;margin-bottom:clamp(40px,6vw,64px)}
.section-head.center{max-width:780px}
.section-head h2{font-size:clamp(2.1rem,4.4vw,3.4rem);line-height:1.06;letter-spacing:-.02em;margin-bottom:20px}
.lead{font-size:1.08rem;color:var(--muted);max-width:640px}
.section-head .lead{margin:0}
h3{font-size:1.5rem;line-height:1.2;margin-bottom:12px}

/* cards become hairline-ruled columns, not boxes */
.card{position:relative;background:transparent;border:0;border-top:1px solid var(--ink);padding:24px 0 8px;border-radius:0}
.card p{color:var(--muted);font-size:.98rem}
.icon{display:none}
.tag{display:block;margin-bottom:18px}
.grid{display:grid;gap:40px clamp(24px,3.5vw,48px)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.ticks{list-style:none;margin:16px 0 0}
.ticks li{position:relative;padding:10px 0 10px 26px;border-top:1px solid var(--hair);font-size:.95rem;color:var(--ink)}
.ticks li::before{content:"—";position:absolute;left:0;top:10px;color:var(--grey);font-family:var(--mono)}

/* services feature */
.service-feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,72px);padding:32px 0 0;margin-bottom:72px}
.service-feature h3{font-size:clamp(1.9rem,3.2vw,2.6rem);line-height:1.08;margin-bottom:18px}
.service-feature .tag{color:var(--ink)}
.service-feature .tag::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--verm);margin-right:10px;vertical-align:1px}
.service-feature .btn{margin-top:8px}
.service-feature .ticks{margin:0}
.service-feature .ticks li:first-child{border-top:0;padding-top:0}
.service-feature .ticks li:first-child::before{top:0}

/* work */
.case-top{display:flex;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.client{color:var(--ink)}
.work-card h3{font-size:1.6rem}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.chips li{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--muted);border:1px solid var(--hair);padding:4px 9px;line-height:1.4}
.stack-group .chips{gap:6px 0}
.stack-group .chips li{border:0;padding:0}
.stack-group .chips li+li::before{content:"/";margin:0 14px;color:var(--grey);font-family:var(--sans)}
.case-slim{margin-top:56px;display:grid;grid-template-columns:minmax(0,1fr);padding-top:24px}
.case-slim>div{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr) minmax(0,1.6fr);gap:12px clamp(24px,3.5vw,48px);align-items:baseline}
.case-slim h3{margin:0}
.case-slim p{margin:0}

/* engagement */
.model .best{margin-top:20px;padding-top:14px;border-top:1px solid var(--hair);font-size:.92rem}
.model .best strong{font-family:var(--mono);font-weight:400;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink);margin-right:6px}
.model.featured{border-top:2px solid var(--ink)}

/* pricing — the one ink section, like the deck's big-numbers slide */
.pricing{background:var(--ink);color:var(--paper);border-top:0}
.pricing .eyebrow,.pricing .tag,.pricing .unit,.pricing .small,.pricing .price-note{color:var(--on-ink-muted)}
.pricing h2,.pricing h3{color:var(--paper)}
.pricing .lead,.pricing .card p{color:var(--on-ink-muted)}
.pricing .card{border-top-color:var(--hair-ink)}
.pricing .featured-price{border-top:2px solid var(--verm)}
.pricing .ticks li{border-top-color:var(--hair-ink);color:var(--paper)}
.pricing .ticks li::before{color:var(--on-ink-muted)}
.amount{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 12px;margin:22px 0 18px}
.amount .num{font-family:var(--serif);font-size:clamp(3.2rem,5.4vw,4.6rem);line-height:1;letter-spacing:-.02em;color:var(--paper);order:1;width:100%}
.amount .small{order:0;width:100%;margin-bottom:6px}
.amount .unit{order:2}
.price .btn{margin-top:26px;width:100%}
.pricing .btn-primary{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.pricing .btn-primary:hover{background:#fff}
.pricing .btn-outline{color:var(--paper);border-color:var(--hair-ink)}
.pricing .btn-outline:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.price-note{margin:48px 0 0;padding-top:18px;border-top:1px solid var(--hair-ink);letter-spacing:.08em;line-height:1.7}
.pricing :focus-visible{outline-color:var(--paper)}

/* process — one ink rule with dots, first vermilion */
.steps{list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(20px,3vw,40px);counter-reset:step;position:relative;padding-top:40px;border-top:1px solid var(--ink)}
.steps li{position:relative;counter-increment:step}
.steps li::before{content:"";position:absolute;top:-45px;left:0;width:9px;height:9px;border-radius:50%;background:var(--ink)}
.steps li:first-child::before{background:var(--verm)}
.steps li::after{content:"Step 0" counter(step);position:absolute;top:-2px;left:0;font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.steps h3{padding-top:28px;font-size:1.6rem}
.steps p{color:var(--muted);font-size:.96rem}

/* stack — hairline index rows */
.stack{border-bottom:1px solid var(--hair)}
.stack-group{display:grid;grid-template-columns:240px minmax(0,1fr);gap:16px 40px;align-items:baseline;padding:22px 0;border-top:1px solid var(--hair)}
.stack-group:first-child{border-top:1px solid var(--ink)}
.stack-group h3{margin:0;color:var(--ink)}
.stack-group .chips{margin:0}
.stack-group .chips li{font-family:var(--serif);font-size:1.3rem;letter-spacing:0;color:var(--ink)}

/* why — large italic numerals, first vermilion */
.why .grid-4{counter-reset:why}
.why .card{counter-increment:why;padding-top:20px}
.why .card::before{content:counter(why);display:block;font-family:var(--serif);font-style:italic;font-size:4rem;line-height:1;color:var(--grey);margin-bottom:22px}
.why .card:first-child::before{color:var(--verm)}
.why .card h3{font-size:1.35rem}
.overlap{margin-top:80px;padding-top:28px;border-top:1px solid var(--ink)}
.overlap h3{font-size:1.8rem;margin-bottom:8px}
.tz-sub{color:var(--muted);margin:0 0 28px;font-size:.96rem}
.tz{display:grid;gap:12px}
.tz-row{display:grid;grid-template-columns:150px minmax(0,1fr);gap:20px;align-items:center;font-size:.92rem}
.tz-row strong{font-weight:600}
.tz-bar{position:relative;height:10px;border-top:1px solid var(--hair);border-bottom:1px solid var(--hair)}
.tz-bar span{position:absolute;top:-1px;bottom:-1px;background:var(--ink)}
.tz-row:first-child .tz-bar span{background:var(--verm)}
.tz-row span[style*="opacity"]{opacity:1!important;background:var(--grey)}
.tz-axis{display:flex;justify-content:space-between;font-size:.68rem}
.tz-note{margin:24px 0 0;color:var(--muted);font-size:.95rem}

/* faq */
.faq{max-width:900px;border-bottom:1px solid var(--hair)}
.faq details{border-top:1px solid var(--hair)}
.faq details:first-child{border-top-color:var(--ink)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:24px;align-items:baseline;padding:22px 0;font-family:var(--serif);font-size:1.4rem;line-height:1.3}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);font-size:1.1rem;color:var(--muted);flex:none}
.faq details[open] summary::after{content:"−"}
.faq details p{color:var(--muted);max-width:720px;padding-bottom:22px;margin:0}

/* contact */
.contact .container{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:clamp(36px,6vw,96px);align-items:start}
.contact h2{font-size:clamp(2.4rem,5vw,4rem);line-height:1.02;margin-bottom:20px}
.contact-list{list-style:none;margin-top:36px;border-bottom:1px solid var(--hair)}
.contact-list li{display:grid;grid-template-columns:22px minmax(0,1fr);gap:14px;padding:16px 0;border-top:1px solid var(--hair);align-items:start}
.contact-list li:first-child{border-top-color:var(--ink)}
.contact-list svg{width:18px;height:18px;color:var(--muted);margin-top:4px}
.contact-list a{overflow-wrap:anywhere}
.key-link{font-family:var(--serif);font-style:italic;font-size:1.3rem;text-decoration-color:var(--verm)}
.lead-form{border-top:1px solid var(--ink);padding-top:28px}
.form-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 28px}
.field{display:flex;flex-direction:column;margin-bottom:22px}
label{margin-bottom:6px}
input,select,textarea{font:400 1rem/1.4 var(--sans);color:var(--ink);background:transparent;border:0;border-bottom:1px solid var(--grey);border-radius:0;padding:10px 0;width:100%;-webkit-appearance:none;appearance:none}
select{background-image:linear-gradient(45deg,transparent 50%,var(--ink) 50%),linear-gradient(135deg,var(--ink) 50%,transparent 50%);background-position:calc(100% - 10px) 52%,calc(100% - 5px) 52%;background-size:5px 5px;background-repeat:no-repeat;padding-right:24px}
textarea{min-height:120px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:none;border-bottom:2px solid var(--verm);padding-bottom:9px}
::placeholder{color:#6E6A63;opacity:1}
.lead-form .btn{margin-top:6px}
.form-note{margin:18px 0 0;text-transform:none;letter-spacing:.02em;line-height:1.6;font-size:.78rem}

/* footer */
footer{border-top:1px solid var(--ink);padding:56px 0 32px}
.foot{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;margin-bottom:48px}
.foot .wordmark{font-size:1.6rem}
.foot-line{margin:10px 0 0;color:var(--muted);max-width:360px}
.foot ul{list-style:none;display:flex;flex-wrap:wrap;gap:12px 28px;align-items:flex-start}
.foot ul a{text-decoration:none;font-size:.92rem}
.foot ul a:hover{text-decoration:underline;text-decoration-color:var(--verm)}
.legal{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:18px;border-top:1px solid var(--hair)}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nav-links{gap:20px}
}
@media (max-width:960px){
  .hero .container{grid-template-columns:minmax(0,1fr)}
  .code-card{max-width:560px}
  .grid-3,.work-grid{grid-template-columns:minmax(0,1fr)}
  .service-feature,.contact .container{grid-template-columns:minmax(0,1fr)}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:56px}
  .steps li:nth-child(n+3)::before{display:none}
  .case-slim>div{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:880px){
  .nav{height:64px}
  .menu-toggle{display:block}
  .nav .btn-sm.desktop{display:none}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;margin:0;flex-direction:column;align-items:stretch;gap:0;background:var(--paper);padding:4px var(--gut) 24px;border-bottom:1px solid var(--ink)}
  .nav-links.open{display:flex}
  .nav-links li{border-top:1px solid var(--hair)}
  .nav-links li:first-child{border-top:0}
  .nav-links a{display:block;padding:14px 0;font-family:var(--serif);font-size:1.3rem;border:0}
  .nav-links .mobile-cta{display:block;border-top:0;margin-top:12px}
  .nav-links .mobile-cta a{display:flex;font:500 .95rem/1 var(--sans);padding:16px 20px;color:var(--paper)}
}
@media (max-width:640px){
  body{font-size:16px}
  .grid-2,.grid-4,.form-row{grid-template-columns:minmax(0,1fr)}
  .grid{gap:36px}
  .steps{grid-template-columns:minmax(0,1fr);border-top:0;padding-top:0;row-gap:0}
  .steps li{border-top:1px solid var(--hair);padding:20px 0 4px 28px}
  .steps li:first-child{border-top:1px solid var(--ink)}
  .steps li::before,.steps li:nth-child(n+3)::before{display:block;top:27px;left:0}
  .steps li::after{top:22px;left:28px}
  .steps h3{padding-top:26px}
  .stack-group{grid-template-columns:minmax(0,1fr);gap:10px}
  .tz-row{grid-template-columns:96px minmax(0,1fr);gap:12px;font-size:.85rem}
  .hero-cta .btn{flex:1 1 100%}
  .client-list{gap:24px}
  .client-list li{font-size:1.35rem}
  .code-card pre{font-size:.7rem}
  .faq summary{font-size:1.2rem}
  .legal{flex-direction:column}
  .why .card::before{font-size:3.2rem}
}
@media (max-width:380px){.wordmark{font-size:1.2rem}.hero h1{font-size:2.35rem}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}