/* buzin.id — one stylesheet, no web fonts, no JS. */
:root{
  /* palette kept from the original buzin.id */
  --paper:#353d4a; --ink:#e3d8c2; --text:#a9acb1; --muted:#a9acb1; --rule:#4f5868; --tint:#2e3540;
  --accent:#00defe; --hover:#1cb95b; --active:#2bfeab; --accent-ink:#262c36;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Charter","Georgia",serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --wrap:68rem; --measure:40rem; --gutter:clamp(1rem,4vw,3rem);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--text);font:1.125rem/1.6 var(--serif);
  font-kerning:normal;text-rendering:optimizeLegibility}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:.2em}
a:hover{color:var(--active);text-decoration-color:var(--hover)}
a:active{color:var(--active)}
strong{color:var(--ink)}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--paper);padding:.6rem 1rem;z-index:10;font:600 .9rem var(--sans)}
.skip:focus{left:1rem;top:1rem}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}

/* header */
.site-header{position:sticky;top:0;z-index:20;background:var(--paper);border-bottom:1px solid var(--rule)}
html{scroll-padding-top:5rem}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:.5rem 1.5rem;min-height:4rem;padding-top:.6rem;padding-bottom:.6rem}
.brand{display:flex;flex-direction:column;gap:.1rem;text-decoration:none;color:var(--ink);min-width:0}
.brand-name{font:600 1rem/1.2 var(--sans);letter-spacing:.01em}
.brand-role{font:500 .72rem/1.3 var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.brand:hover .brand-name{color:var(--active)}
.nav{display:flex;gap:1.25rem;align-items:center;font:.9rem var(--sans);flex-wrap:wrap}
.nav a{text-decoration:none;padding:.5rem 0;color:var(--text)}
.nav a:hover{color:var(--active)}
.nav .links{display:flex;gap:1.25rem}
@media (max-width:44rem){.nav .links{display:none}}
.lang{display:flex;border:1px solid var(--rule);border-radius:2rem;overflow:hidden}
.lang a,.lang span{display:block;padding:.3rem .7rem;font:600 .8rem var(--sans);letter-spacing:.06em;text-decoration:none}
.lang a{color:var(--text)}
.lang [aria-current]{background:var(--ink);color:var(--paper)}

/* type */
h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.15;margin:0;color:var(--ink)}
h1{font-family:var(--sans);font-weight:600;font-size:clamp(1.85rem,3.6vw,2.75rem);line-height:1.14;letter-spacing:-.02em;max-width:22ch;text-wrap:balance}
h2{font-size:clamp(1.7rem,3.4vw,2.3rem);letter-spacing:-.01em}
h3{font-size:1.3rem;font-weight:600}
p{margin:0 0 1rem}
.eyebrow,.label{font:600 .78rem/1.4 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.label .num{color:var(--accent);margin-right:.6em}
.muted{color:var(--muted)}

/* hero */
.hero{padding:clamp(2.5rem,7vw,5.5rem) 0 clamp(3rem,7vw,5rem);border-bottom:1px solid var(--rule)}
.hero .eyebrow{margin-bottom:1.5rem}
.hero-grid{display:grid;gap:2.5rem;align-items:start}
@media (min-width:56rem){.hero-grid{grid-template-columns:minmax(0,1fr) 22rem;gap:4rem}}
.portrait{margin:0;max-width:30rem}
@media (min-width:56rem){.portrait{max-width:none;margin-top:.4rem}}
.portrait img{display:block;width:100%;height:auto}
.hero .lede{font-size:clamp(1.15rem,1.8vw,1.3rem);line-height:1.55;max-width:34rem;margin:1.5rem 0 1.5rem}
.hero .trust{font:1rem/1.5 var(--sans);color:var(--muted);max-width:36rem;padding-left:1rem;border-left:3px solid var(--accent)}
.actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2.25rem}
.btn{display:inline-block;padding:.85rem 1.35rem;font:600 1rem/1.2 var(--sans);text-decoration:none;border:2px solid var(--ink);border-radius:2px;color:var(--ink)}
.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn:hover{background:var(--hover);border-color:var(--hover);color:var(--accent-ink)}
.btn:active{background:var(--active);border-color:var(--active);color:var(--accent-ink)}

/* sections */
.section{padding:clamp(3rem,8vw,5.5rem) 0;border-bottom:1px solid var(--rule)}
.section-head{display:grid;gap:.75rem;margin-bottom:2.5rem}
@media (min-width:56rem){
  .section .wrap{display:grid;grid-template-columns:16rem 1fr;gap:3rem}
  .section-head{margin:0;align-content:start;position:sticky;top:6rem}
}
.section-head p{font-size:1rem;color:var(--muted);margin:0}
.grid{display:grid;gap:2.25rem 2.5rem}
@media (min-width:40rem){.grid.two{grid-template-columns:1fr 1fr}}
.item h3{margin-bottom:.6rem}
.item p{margin:0 0 .6rem}
.tags{font:.85rem/1.5 var(--sans);color:var(--muted);margin:0}
.steps{list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{counter-increment:s;display:grid;grid-template-columns:3rem 1fr;gap:0 1rem;padding:1.25rem 0;border-top:1px solid var(--rule)}
.steps li:first-child{border-top:0;padding-top:0}
.steps li::before{content:counter(s,decimal-leading-zero);font:600 .9rem/2 var(--sans);color:var(--accent)}
.steps h3{grid-column:2}
.steps p{grid-column:2;margin:.35rem 0 0}
.note{margin-top:2rem;padding:1.1rem 1.25rem;background:var(--tint);font:1rem/1.55 var(--sans)}
.evidence{display:grid;gap:0}
.evidence article{padding:1.5rem 0;border-top:1px solid var(--rule)}
.evidence article:first-child{border-top:0;padding-top:0}
.evidence .kind{font:600 .78rem var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:.4rem}

/* contact */
.paths{display:grid;gap:1.25rem}
@media (min-width:40rem){.paths{grid-template-columns:1fr 1fr}}
.path{border:1px solid var(--rule);padding:1.75rem;display:flex;flex-direction:column;gap:.75rem}
.path .btn{align-self:flex-start;margin-top:auto}
.path p{margin:0}

/* agent brief page */
.doc{padding:clamp(3rem,8vw,5rem) 0}
.doc .wrap{max-width:calc(var(--measure) + 2*var(--gutter) + 8rem)}
.doc h1{max-width:none;margin-bottom:1.25rem}
.doc h2{font-size:1.5rem;margin:2.75rem 0 1rem;padding-top:1.5rem;border-top:1px solid var(--rule)}
.doc ul,.doc ol{padding-left:1.25rem;margin:0 0 1rem}
.doc li{margin-bottom:.35rem}
dl.kv{display:grid;grid-template-columns:minmax(9rem,max-content) 1fr;gap:.5rem 1.5rem;margin:0;font:1rem/1.5 var(--sans)}
dl.kv dt{font-weight:600;color:var(--ink)}
dl.kv dd{margin:0}
@media (max-width:34rem){dl.kv{grid-template-columns:1fr}dl.kv dd{margin-bottom:.6rem}}
pre{background:var(--tint);padding:1.25rem;overflow-x:auto;font:.85rem/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em}
.callout{border-left:3px solid var(--accent);padding:.25rem 0 .25rem 1rem;margin:1.5rem 0}

/* footer */
.site-footer{padding:2.5rem 0 3rem;font:.92rem/1.6 var(--sans);color:var(--muted)}
.site-footer .wrap{display:flex;flex-wrap:wrap;gap:1rem 2.5rem;justify-content:space-between}
.site-footer .fine{font-size:.85rem}
.site-footer ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.25rem 1.5rem}
.site-footer a{color:var(--accent)}
@media print{.site-header,.actions,.skip{display:none}body{background:#fff;color:#000}}

@media (max-width:30rem){.brand-role{font-size:.64rem;letter-spacing:.05em}.site-header .wrap{gap:.5rem 1rem}}

/* timeline (How I work) */
.timeline{list-style:none;margin:0;padding:0;position:relative;counter-reset:t}
.timeline::before{content:"";position:absolute;left:.4375rem;top:1.5rem;bottom:2.4rem;width:2px;background:var(--rule)}
.timeline li{position:relative;padding:.7rem 0 .7rem 2.5rem;counter-increment:t}
.timeline li::before{content:"";position:absolute;left:0;top:1.05rem;width:1rem;height:1rem;border-radius:50%;background:var(--paper);border:2px solid var(--accent);box-sizing:border-box}
.timeline li:first-child::before,.timeline li:last-child::before{background:var(--accent)}
.timeline h3{font-family:var(--sans);font-weight:600;font-size:1.15rem;line-height:1.3}
.timeline h3::before{content:counter(t,decimal-leading-zero);display:inline-block;width:2.1rem;font:600 .8rem var(--sans);font-variant-numeric:tabular-nums;color:var(--muted);letter-spacing:.06em;vertical-align:.12em}
.timeline li{padding:.75rem 0 .75rem 2.5rem}
.timeline .sub{margin:.15rem 0 0 2.1rem;font:400 .95rem/1.4 var(--sans);color:var(--muted)}
.tags-accent{color:var(--accent);font-weight:500;letter-spacing:.01em}
.tag{white-space:nowrap}

/* wide section: heading above, content full width (used by the horizontal timeline) */
@media (min-width:56rem){
  .section-wide .wrap{grid-template-columns:1fr;gap:2.5rem}
  .section-wide .section-head{position:static;grid-template-columns:16rem 1fr;column-gap:3rem;align-items:baseline}
  .section-wide .section-head .label{grid-column:1/-1}
  .section-wide .section-head p:last-child{grid-column:2}
  .timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:1.5rem}
  .timeline::before{left:.5rem;right:.5rem;top:.5rem;bottom:auto;width:auto;height:2px}
  .timeline li{padding:2.1rem 0 0}
  .timeline li::before{top:0;left:0}
  .timeline h3::before{display:block;width:auto;margin-bottom:.35rem}
  .timeline .sub{margin-left:0}
}
/* collapsible "Why me" */
.reveal summary{display:inline-flex;align-items:center;gap:.5rem;cursor:pointer;list-style:none;font:600 1rem/1.2 var(--sans);color:var(--accent);padding:.75rem 1.1rem;border:2px solid var(--accent);border-radius:2px}
.reveal summary::-webkit-details-marker{display:none}
.reveal summary::after{content:"↓";transition:transform .2s}
.reveal[open] summary::after{transform:rotate(180deg)}
.reveal summary:hover{background:var(--hover);border-color:var(--hover);color:var(--accent-ink)}
.reveal .less,.reveal[open] .more{display:none}
.reveal[open] .less{display:inline}
.reveal[open] summary{margin-bottom:2rem}
@media (prefers-reduced-motion:reduce){.reveal summary::after{transition:none}}
@media print{.reveal>:not(summary){display:block}}
.agent-text{margin:0}
.steps-mini{margin:.6rem 0 0;padding-left:1.25rem}
.steps-mini li{margin-bottom:.4rem}
.steps-mini code{font-size:.85em;color:var(--ink)}

.actions-stack{display:flex;flex-wrap:wrap;gap:.6rem;margin:auto 0 0}
.path .actions-stack .btn{margin-top:0}
.faq{display:grid;gap:0}
.faq-item{padding:1.25rem 0;border-top:1px solid var(--rule)}
.faq-item:first-child{border-top:0;padding-top:0}
.faq-item h3{font-family:var(--sans);font-size:1.05rem;font-weight:600;margin-bottom:.4rem}
.faq-item p{margin:0}

/* contact block, final */
.path{gap:1rem}
.contact-links{list-style:none;margin:.25rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:.5rem 1.75rem;font:1rem/1.5 var(--sans)}
.contact-links span{color:var(--muted);margin-right:.35rem}
.cta-or{display:flex;align-items:center;flex-wrap:wrap;gap:.75rem 1rem;margin-top:.5rem;padding-top:1.25rem;border-top:1px solid var(--rule)}
.cta-or .or{font:1rem var(--sans);color:var(--muted)}
.path .cta-or .btn{margin-top:0;align-self:auto}
.agent-text p{margin:0 0 .75rem}
.agent-links{list-style:none;margin:.5rem 0 0;padding:1.25rem 0 0;border-top:1px solid var(--rule);font:1rem/1.5 var(--sans);display:grid;gap:.5rem}
.nw{white-space:nowrap}
.paths{align-items:start}
.cta-or .btn{white-space:nowrap}

.agent-endpoints{display:flex;flex-wrap:wrap;gap:.6rem;border-top:0;padding-top:.25rem}
.agent-endpoints a{display:inline-block;padding:.45rem .7rem;border:1px solid var(--rule);border-radius:2px;text-decoration:none;background:var(--tint)}
.agent-endpoints a:hover{border-color:var(--accent)}
.agent-endpoints code{font-size:.9rem;color:var(--accent)}

/* Why me + FAQ side by side; panels open full width below */
.duo-wrap .duo{display:grid;grid-template-columns:1fr;gap:2rem}
.duo-toggle{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.duo-card{display:grid;gap:.75rem;align-content:start}
.duo-card .duo-intro{color:var(--muted);font-size:1rem;margin:0}
.duo-btn{justify-self:start;display:inline-flex;align-items:center;gap:.5rem;cursor:pointer;font:600 1rem/1.2 var(--sans);color:var(--accent);padding:.75rem 1.1rem;border:2px solid var(--accent);border-radius:2px;margin-top:.5rem;user-select:none}
.duo-btn::after{content:"↓";transition:transform .2s}
.duo-btn:hover{background:var(--hover);border-color:var(--hover);color:var(--accent-ink)}
.duo-btn .less{display:none}
.duo-panel{display:none;padding-top:.5rem}
#t-why:checked~#p-why,#t-faq:checked~#p-faq{display:block}
#t-why:checked~#why .duo-btn .more,#t-faq:checked~#faq .duo-btn .more{display:none}
#t-why:checked~#why .duo-btn .less,#t-faq:checked~#faq .duo-btn .less{display:inline}
#t-why:checked~#why .duo-btn::after,#t-faq:checked~#faq .duo-btn::after{transform:rotate(180deg)}
#t-why:focus-visible~#why .duo-btn,#t-faq:focus-visible~#faq .duo-btn{outline:3px solid var(--accent);outline-offset:3px}
.faq-item ol{margin:.25rem 0 0;padding-left:1.25rem}
.faq-item ol li{margin-bottom:.35rem}
.faq-item p+p{margin-top:.6rem}
/* mobile: each panel under its own card */
#why{order:1}#p-why{order:2}#faq{order:3}#p-faq{order:4}
@media (min-width:56rem){
  .duo-wrap .duo{grid-template-columns:1fr 1fr;column-gap:4rem;row-gap:2.5rem}
  #why{order:1}#faq{order:2}#p-why{order:3}#p-faq{order:4}
  .duo-panel{grid-column:1/-1;border-top:1px solid var(--rule);padding-top:2.5rem}
  .duo-card h2{font-size:clamp(1.7rem,3vw,2.1rem)}
}
@media (prefers-reduced-motion:reduce){.duo-btn::after{transition:none}}
@media print{.duo-panel{display:block}.duo-btn{display:none}}
@media (min-width:56rem){
  .duo-panel .faq{display:block;columns:2;column-gap:4rem}
  .duo-panel .faq-item{break-inside:avoid;padding:0 0 1.75rem;border-top:0}
}

.portrait video{display:block;width:100%;height:auto;background:#000;cursor:pointer}
.portrait{max-width:20rem}
@media (min-width:56rem){.portrait{max-width:none}}

/* alternating black "stage" bands: hero, How I work, Why me + FAQ */
.band-dark{--paper:#000;--tint:#121417;--rule:#262a31;background:#000;border-bottom-color:#000}
.portrait video{background:#000}
@media (max-width:55.99rem){.hero .portrait{justify-self:center;margin-left:auto;margin-right:auto;width:100%;max-width:20rem}}
/* feather the video edges so no rectangle shows on the black band */
.portrait video{
  -webkit-mask-image:linear-gradient(to right,transparent,#000 7%,#000 93%,transparent),linear-gradient(to bottom,transparent,#000 6%,#000 82%,transparent);
  -webkit-mask-composite:source-in;
  mask-image:linear-gradient(to right,transparent,#000 7%,#000 93%,transparent),linear-gradient(to bottom,transparent,#000 6%,#000 82%,transparent);
  mask-composite:intersect;background:transparent}

/* mobile hero: tighter so the video (to the waist) shows above the fold on common phones */
.cta-short{display:none}
@media (max-width:55.99rem){
  .hero{padding-top:1.25rem;padding-bottom:2rem}
  .hero h1{font-size:clamp(1.6rem,7vw,2.1rem);line-height:1.12}
  .hero-grid{gap:.5rem}
  .hero .lede{font-size:.98rem;line-height:1.45;margin:.75rem 0}
  .hero .trust{font-size:.85rem;line-height:1.4;margin:.75rem 0}
  .hero .actions{margin-top:1rem;gap:.5rem;display:flex;flex-wrap:nowrap}
  .hero .actions .btn{padding:.65rem .9rem;font-size:.9rem;white-space:nowrap}
  .hero .cta-long{display:none}
  .hero .cta-short{display:inline}
  .hero .portrait{margin-top:-1.25rem}
  .hero .actions{position:relative;z-index:1}
}