/* Chatsubo Digital — one centered column system.
   Every section: same vertical rhythm, centered head (eyebrow, title, intro), content inside .wrap or .narrow.
   Type: Schibsted Grotesk for headings and logo (credible, plain-spoken), Geist for body. Palette: white + true black, Vercel-style. */
:root{
  --paper:#FAFAFA;
  --card:#FFFFFF;
  --ink:#0A0A0A;
  --grey:#666666;
  --line:#EAEAEA;
  --night:#000000;
  --night-2:#0A0A0A;
  --night-line:#262626;
  --night-grey:#A1A1A1;
  --night-fg:#EDEDED;
  --font-display:"Schibsted Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body:"Geist", "Helvetica Neue", Arial, system-ui, sans-serif;
  --section:clamp(80px, 10vw, 136px);
  --head-gap:clamp(40px, 5vw, 64px);
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
::selection{background:var(--ink);color:var(--paper)}
a{color:inherit}
p{margin:0}
h1,h2,h3{margin:0;text-wrap:balance}
h1,h2{font-family:var(--font-display);font-weight:700;letter-spacing:-0.035em;line-height:1.02}
h1{font-size:clamp(2.8rem, 6.6vw, 6rem);line-height:1;letter-spacing:-0.045em}
h2{font-size:clamp(2.2rem, 4.6vw, 3.8rem)}
h3{font-family:var(--font-display);font-weight:600;font-size:1.3rem;letter-spacing:-0.025em;line-height:1.2}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:6px}

.wrap{max-width:1160px;margin:0 auto;padding-left:max(20px, env(safe-area-inset-left, 0px));padding-right:max(20px, env(safe-area-inset-right, 0px))}
.narrow{max-width:760px}
section{padding-block:var(--section)}
section + section:not(.dark):not(.hero){border-top:1px solid var(--line)}
.dark + section{border-top:0}

/* centered section head */
.head{display:flex;flex-direction:column;align-items:center;text-align:center;gap:16px;margin-bottom:var(--head-gap)}
.head p{color:var(--grey);font-size:1.12rem;max-width:52ch}
.eyebrow{font-size:.95rem;font-weight:500;color:var(--grey)}
.muted{color:var(--grey)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;font:500 1rem/1 var(--font-body);padding:1em 1.6em;border-radius:999px;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:background .15s, color .15s, border-color .15s;white-space:nowrap}
.btn-solid{background:var(--ink);color:var(--paper)}
.btn-solid:hover{background:#383838}
.btn-line{border-color:var(--line);color:var(--ink);background:var(--card)}
.btn-line:hover{border-color:var(--ink)}
.btn-light{background:var(--night-fg);color:var(--ink)}
.btn-light:hover{background:#fff}
.actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* nav: logo | links | button */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top, 0px);z-index:30;background:var(--paper)}
header.nav{position:sticky;top:env(safe-area-inset-top, 0px);z-index:20;background:color-mix(in srgb, var(--paper) 88%, transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;height:68px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--font-display);font-weight:700;font-size:1.15rem;letter-spacing:-0.03em;white-space:nowrap}
.logo i{width:12px;height:12px;border-radius:3px;background:var(--ink);display:block}
.nav-links{display:flex;gap:32px}
.nav-links a{text-decoration:none;font-size:.95rem;color:var(--grey);transition:color .15s}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--ink)}
.nav-end{display:flex;justify-content:flex-end;gap:8px}
.nav-end .btn{padding:.75em 1.2em;font-size:.92rem}
.menu-btn{display:none}
@media (max-width:820px){
  .nav .wrap{grid-template-columns:1fr auto}
  .menu-btn{display:inline-flex}
  .nav-links{position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;background:var(--paper);border-bottom:1px solid var(--line);padding:8px max(20px, env(safe-area-inset-right, 0px)) 20px max(20px, env(safe-area-inset-left, 0px));display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 0;font-size:1.1rem;color:var(--ink);border-bottom:1px solid var(--line)}
}
@media (max-width:420px){.nav-end .btn-solid{display:none}}

/* hero */
.hero{padding-block:clamp(72px, 11vw, 150px) 0;text-align:center;background:radial-gradient(900px 420px at 50% 0%, #EFEFEF, transparent 70%)}
.hero .wrap{display:flex;flex-direction:column;align-items:center;gap:28px;padding-bottom:clamp(64px, 9vw, 120px)}
.hero h1 span{display:block}
.hero h1 .soft{color:var(--grey)}
.hero .lede{font-size:clamp(1.1rem, 1.6vw, 1.3rem);color:var(--grey);max-width:44ch}
.page-hero{padding-block:clamp(64px, 9vw, 120px);text-align:center}
.page-hero .wrap{display:flex;flex-direction:column;align-items:center;gap:22px}
.page-hero h1{font-size:clamp(2.8rem, 6.4vw, 5.8rem)}
.page-hero .lede{font-size:1.2rem;color:var(--grey);max-width:46ch}

/* one orchestrated load moment */
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.hero .wrap > *,.page-hero .wrap > *{animation:rise .8s cubic-bezier(.2,.7,.2,1) both}
.hero .wrap > *:nth-child(2),.page-hero .wrap > *:nth-child(2){animation-delay:.08s}
.hero .wrap > *:nth-child(3),.page-hero .wrap > *:nth-child(3){animation-delay:.16s}
.hero .wrap > *:nth-child(4),.page-hero .wrap > *:nth-child(4){animation-delay:.24s}

/* ticker */
.ticker{background:var(--night);color:var(--night-fg);overflow:hidden}
.ticker-track{display:flex;width:max-content;animation:slide 40s linear infinite}
.ticker-track span{font-family:var(--font-display);font-weight:600;letter-spacing:-0.02em;font-size:clamp(1.15rem, 2vw, 1.6rem);padding:18px 0;white-space:nowrap}
.ticker-track span::after{content:"·";padding:0 .8em;color:var(--night-grey)}
@keyframes slide{to{transform:translateX(-50%)}}

/* three-up text columns */
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(28px, 4vw, 56px);text-align:center}
.three > div{display:flex;flex-direction:column;align-items:center;gap:10px;min-width:0}
.three p{color:var(--grey);max-width:30ch}
@media (max-width:820px){.three{grid-template-columns:1fr}}

/* contact / about cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:32px 28px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px;min-width:0}
.card p{color:var(--grey)}
.card h3{overflow-wrap:anywhere}
.card .btn{margin-top:8px}
@media (max-width:820px){.cards{grid-template-columns:1fr}}

/* dark demo band */
.dark{background:var(--night);color:var(--night-fg)}
.dark .head p,.dark .eyebrow{color:var(--night-grey)}
.demo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.demo-col{display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px;min-width:0}
.demo-num{font-size:.9rem;color:var(--night-grey);font-variant-numeric:tabular-nums}
.demo-col h3{font-size:1.6rem}
.demo-col > p{color:var(--night-grey);max-width:32ch;min-height:5em}
.demo-card{margin-top:16px;width:100%;text-align:left;background:var(--night-2);border:1px solid var(--night-line);border-radius:20px;padding:22px;min-height:290px;display:flex;flex-direction:column;gap:16px}
.demo-cap{font-size:.85rem;font-weight:500;color:var(--night-grey)}
@media (max-width:980px){
  .demo-grid{grid-template-columns:1fr;gap:56px;max-width:520px;margin:0 auto}
  .demo-col > p{min-height:0}
  .demo-card{min-height:0}
}
.inbox{display:flex;flex-direction:column;border:1px solid var(--night-line);border-radius:12px;overflow:hidden}
.note{display:grid;grid-template-columns:28px 1fr auto;gap:12px;align-items:center;padding:13px 14px;transition:opacity .45s ease, transform .45s ease}
.note + .note{border-top:1px solid var(--night-line)}
.note .chk{width:26px;height:26px;border-radius:50%;background:var(--night-fg);color:var(--night);display:grid;place-items:center;font-size:.78rem;font-weight:700}
.note div{min-width:0}
.note small{display:block;font-size:.78rem;color:var(--night-grey)}
.note span{font-size:.94rem;display:block;line-height:1.35}
.note time{font-size:.78rem;color:var(--night-grey)}
.note.off{opacity:0;transform:translateY(8px)}
.flow{display:flex;align-items:flex-start;justify-content:space-between;gap:6px}
.flow-step{display:flex;flex-direction:column;align-items:center;gap:10px;flex:1;min-width:0}
.flow-ico{width:100%;max-width:60px;aspect-ratio:1;border-radius:14px;border:1px solid var(--night-line);display:grid;place-items:center;color:var(--night-fg);transition:background .35s, color .35s, transform .35s, border-color .35s}
.flow-ico svg{width:46%;height:46%;fill:currentColor}
.flow-step span{font-size:.8rem;color:var(--night-grey)}
.flow-dot{width:6px;height:6px;border-radius:50%;background:var(--night-line);margin-top:27px;flex:none;transition:background .3s}
.flow-ico{color:var(--brand, var(--night-fg))}
.flow-step.on .flow-ico{background:color-mix(in srgb, var(--brand) 9%, var(--night-2));border-color:color-mix(in srgb, var(--brand) 55%, var(--night-line));transform:translateY(-2px);box-shadow:none}
.flow-dot.on{background:var(--night-fg)}
.flow-log{display:flex;flex-direction:column;gap:8px;font-size:.9rem;color:var(--night-grey)}
.flow-log p{display:flex;gap:10px;transition:color .35s}
.flow-log p::before{content:"✓";font-weight:700}
.flow-log p.on{color:var(--night-fg)}
.flow-done{font-size:.85rem;font-weight:500;color:var(--night-fg);transition:opacity .4s}
.flow-done.off{opacity:0}
.chat-you,.chat-ai{border:1px solid var(--night-line);border-radius:12px;padding:14px 16px;display:flex;flex-direction:column;gap:6px}
.chat-you small,.chat-ai small{font-size:.78rem;color:var(--night-grey)}
.chat-you p{min-height:2.9em}
.caret{display:inline-block;width:2px;height:1.05em;background:var(--night-fg);vertical-align:-.15em;margin-left:1px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.chat-ai{background:#141414;transition:opacity .45s, transform .45s}
.chat-ai ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:6px;font-size:.92rem;color:#D6D6D2}
.chat-ai li::before{content:"– ";color:var(--night-grey)}
.chat-ai.off{opacity:0;transform:translateY(8px)}

/* logo wall */
.logo-wall{display:flex;flex-direction:column;gap:12px;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.logo-row{overflow:hidden}
.logo-track{display:flex;gap:12px;width:max-content;animation:slide-gap 50s linear infinite}
.logo-row.rev .logo-track{animation-direction:reverse;animation-duration:56s}
.logo-row:hover .logo-track{animation-play-state:paused}
.dup{display:flex;gap:12px}
.tile{width:136px;height:136px;flex:none;border:1px solid var(--line);border-radius:18px;background:var(--card);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}
.tile svg{width:40px;height:40px;fill:currentColor}
.tile span{font-size:.8rem;color:var(--grey)}
@keyframes slide-gap{to{transform:translateX(calc(-50% - 6px))}}
@media (max-width:600px){.tile{width:108px;height:108px}.tile svg{width:32px;height:32px}}

/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;text-align:center;position:relative}
.steps::before{content:"";position:absolute;top:22px;left:10%;right:10%;height:1px;background:var(--line)}
.step{display:flex;flex-direction:column;align-items:center;gap:10px;position:relative;min-width:0}
.step-n{width:44px;height:44px;border-radius:50%;background:var(--paper);border:1px solid var(--line);display:grid;place-items:center;font-weight:600;font-variant-numeric:tabular-nums;margin-bottom:6px}
.step h3{font-size:1.2rem}
.step p{color:var(--grey);font-size:.95rem;max-width:22ch}
@media (max-width:900px){.steps{grid-template-columns:1fr;max-width:420px;margin:0 auto;gap:36px}.steps::before{display:none}}

/* compare */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:920px;margin:0 auto}
.compare > div{border:1px solid var(--line);border-radius:20px;background:var(--card);padding:32px;display:flex;flex-direction:column;gap:18px;min-width:0}
.compare > div.us{background:var(--night);color:var(--night-fg);border-color:var(--night)}
.compare ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.compare li{display:flex;gap:12px}
.compare li::before{content:"–";color:var(--grey)}
.compare .us li::before{content:"✓";color:var(--night-fg)}
.compare > div:not(.us) li{color:var(--grey)}
@media (max-width:720px){.compare{grid-template-columns:1fr}}

/* about */
.who{display:grid;grid-template-columns:320px 1fr;gap:clamp(32px, 5vw, 64px);align-items:center;max-width:960px;margin:0 auto}
.who-photo{aspect-ratio:4/5;max-width:100%;border-radius:24px;background:var(--night);color:var(--night-fg);display:grid;place-items:center;overflow:hidden}
.who-photo span{font-family:var(--font-display);font-weight:700;font-size:8rem;line-height:1}
.who-photo img{width:100%;height:100%;object-fit:cover;object-position:68% 40%;filter:grayscale(1)}
.who-copy{display:flex;flex-direction:column;gap:20px;align-items:flex-start;min-width:0}
.who-copy h2{font-size:clamp(2.2rem, 4vw, 3.2rem)}
.who-copy p{font-size:1.1rem;color:#444444;max-width:52ch}
@media (max-width:760px){.who{grid-template-columns:1fr;justify-items:center;text-align:center}.who-photo{width:260px}.who-copy{align-items:center}}

/* faq */
.faq{max-width:760px;margin:0 auto;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px 0;font-weight:500;font-size:1.12rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;line-height:1;color:var(--grey);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 0 24px;color:var(--grey);max-width:62ch}

/* checklist */
.checklist{list-style:none;margin:0 auto;padding:0;max-width:560px;display:flex;flex-direction:column;gap:12px}
.checklist li{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 20px;display:flex;gap:14px}
.checklist li::before{content:"✓";font-weight:700}

/* closing CTA */
.cta{background:var(--night);color:var(--night-fg);text-align:center}
.cta .wrap{display:flex;flex-direction:column;align-items:center;gap:24px}
.cta h2{font-size:clamp(2.6rem, 6vw, 5rem)}
.cta p{color:var(--night-grey);font-size:1.15rem;max-width:44ch}
.email-row{display:flex;align-items:center;gap:6px;border:1px solid var(--night-line);border-radius:999px;padding:5px 5px 5px 20px;max-width:100%}
.email-row code{font-family:var(--font-body);font-size:.98rem;min-width:0;overflow-wrap:anywhere;user-select:all}
.copy{font:500 .85rem var(--font-body);background:var(--night-2);color:var(--night-fg);border:1px solid var(--night-line);border-radius:999px;padding:.6em 1em;cursor:pointer}
.copy:hover{background:#1A1A1A}

/* footer */
footer{background:var(--night);color:var(--night-grey);border-top:1px solid var(--night-line)}
footer .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;padding-block:28px;font-size:.92rem}
footer .logo{color:var(--night-fg);font-size:1rem}
footer .logo i{background:var(--night-fg)}
.foot-links{display:flex;flex-wrap:wrap;gap:20px}
.foot-links a{text-decoration:none}
.foot-links a:hover{color:var(--night-fg)}
@media (max-width:700px){footer .wrap{flex-direction:column;text-align:center}.foot-links{justify-content:center}}

/* prose */
.prose{max-width:680px;margin:0 auto;display:flex;flex-direction:column;gap:16px;font-size:1.05rem;color:#444444}
.prose h2{font-size:1.5rem;margin-top:20px;color:var(--ink)}

/* work: client bar, case studies, quotes */
.clients{display:flex;flex-direction:column;align-items:center;gap:18px;margin-bottom:var(--head-gap)}
.clients-label{font-size:.9rem;color:var(--grey)}
.clients-row{display:flex;flex-wrap:wrap;justify-content:center;gap:12px 40px}
.client-mark{font-family:var(--font-display);font-weight:700;font-size:1.25rem;letter-spacing:-0.03em;color:#9A9A9A}
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.case{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:28px;display:flex;flex-direction:column;gap:12px;min-width:0}
.case > p{color:var(--grey)}
.case .case-ind{font-size:.9rem;margin-top:-6px}
.pill{align-self:flex-start;font-size:.8rem;font-weight:500;padding:.35em .8em;border-radius:999px;background:var(--paper);border:1px solid var(--line)}
.case-built{display:flex;flex-direction:column;gap:4px;padding-top:14px;border-top:1px solid var(--line)}
.case-built p{font-size:.95rem}
.case-result{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:baseline;gap:12px}
.case-result strong{font-family:var(--font-display);font-size:2.4rem;letter-spacing:-0.04em;line-height:1}
.case-result span{font-size:.9rem;color:var(--grey)}
.more{display:flex;justify-content:center;margin-top:40px}
@media (max-width:900px){.cases{grid-template-columns:1fr;max-width:520px;margin:0 auto}}
.quotes{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:960px;margin:0 auto}
.quote{margin:0;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:32px;display:flex;flex-direction:column;gap:20px}
.quote blockquote{margin:0;font-family:var(--font-display);font-weight:600;font-size:1.3rem;letter-spacing:-0.02em;line-height:1.3}
.quote figcaption{display:flex;flex-direction:column;font-size:.95rem}
.quote figcaption span{color:var(--grey)}
@media (max-width:720px){.quotes{grid-template-columns:1fr}}

/* scroll reveal for section headers (JS adds .pre only to headers below the fold) */
.head > *,.cta .wrap > *{transition:opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1), filter .9s cubic-bezier(.2,.7,.2,1)}
.head > *:nth-child(2),.cta .wrap > *:nth-child(2){transition-delay:.08s}
.head > *:nth-child(3),.cta .wrap > *:nth-child(3){transition-delay:.16s}
.cta .wrap > *:nth-child(n+4){transition-delay:.24s}
.pre > *{opacity:0;transform:translateY(28px);filter:blur(6px)}

/* header adapts when it floats over a dark section */
header.nav{transition:background .35s ease, border-color .35s ease, color .35s ease}
header.nav .logo i,header.nav .nav-links a,header.nav .btn{transition:background .35s ease, color .35s ease, border-color .35s ease}
header.nav.on-dark{background:color-mix(in srgb, var(--night) 78%, transparent);border-bottom-color:var(--night-line);color:var(--night-fg)}
header.nav.on-dark .logo i{background:var(--night-fg)}
header.nav.on-dark .nav-links a{color:var(--night-grey)}
header.nav.on-dark .nav-links a:hover,header.nav.on-dark .nav-links a[aria-current="page"]{color:var(--night-fg)}
header.nav.on-dark .btn-solid{background:var(--night-fg);color:var(--night)}
header.nav.on-dark .btn-solid:hover{background:#fff}
header.nav.on-dark .btn-line{background:transparent;color:var(--night-fg);border-color:var(--night-line)}
header.nav.on-dark .btn-line:hover{border-color:var(--night-fg)}
@media (max-width:820px){header.nav.on-dark .nav-links{background:var(--night);border-bottom-color:var(--night-line)}header.nav.on-dark .nav-links a{color:var(--night-fg);border-bottom-color:var(--night-line)}}
body.nav-dark::before{background:var(--night)}

/* wordmark: lowercase chatsubo with a full stop, no icon */
.logo{font-family:var(--font-display);font-weight:800;font-size:1.6rem;letter-spacing:-0.055em;line-height:1;gap:0}
.logo-dot{color:#9A9A9A;transition:color .35s ease}
header.nav.on-dark .logo-dot,footer .logo-dot{color:#666}
footer .logo{font-size:1.35rem}

/* ===== polish pass ===== */
:root{--section:clamp(72px, 8.5vw, 112px);--head-gap:clamp(36px, 4.2vw, 52px)}
p,li{text-wrap:pretty}
.hero{padding-top:clamp(64px, 9vw, 124px)}
.hero .wrap{gap:24px}

/* section labels become small pills */
.head .eyebrow,.hero .eyebrow,.page-hero .eyebrow,.cta .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 12px 6px 10px;border:1px solid var(--line);border-radius:999px;background:var(--card);font-size:.84rem;font-weight:500;color:var(--ink);line-height:1.2}
.head .eyebrow::before,.hero .eyebrow::before,.page-hero .eyebrow::before,.cta .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ink)}
.dark .head .eyebrow,.cta .eyebrow{background:var(--night-2);border-color:var(--night-line);color:var(--night-fg)}
.dark .head .eyebrow::before,.cta .eyebrow::before{background:var(--night-fg)}

/* hero reassurance line */
.trust{list-style:none;margin:4px 0 0;padding:0;display:flex;flex-wrap:wrap;justify-content:center;gap:10px 24px;font-size:.92rem;color:var(--grey)}
.trust li{display:inline-flex;align-items:center;gap:7px}
.trust svg{width:15px;height:15px;color:var(--ink);flex:none}
.hero .wrap > *:nth-child(5){animation-delay:.32s}

/* problem cards */
.problems{gap:16px}
.problems > div{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:32px 28px;gap:12px}
.problems .ico{width:44px;height:44px;border-radius:12px;background:var(--paper);border:1px solid var(--line);display:grid;place-items:center;margin-bottom:6px}
.problems .ico svg{width:22px;height:22px}
.problems p{max-width:28ch}

/* keyboard skip link */
.skip{position:absolute;left:12px;top:-60px;z-index:50;background:var(--ink);color:var(--paper);padding:10px 16px;border-radius:999px;text-decoration:none;font-size:.9rem;transition:top .2s}
.skip:focus{top:12px}

/* small consistency fixes */
.card .btn,.who-copy .btn{padding:.8em 1.3em;font-size:.94rem}
.steps p{max-width:20ch}
footer .wrap{padding-block:32px}
@media (max-width:600px){
  .problems > div{padding:24px 22px;text-align:left;align-items:flex-start;display:grid;grid-template-columns:44px 1fr;column-gap:16px;row-gap:4px}
  .problems .ico{grid-row:span 2;margin:0}
  .problems p{max-width:none}
  .trust{flex-direction:column;align-items:center;gap:8px}
}

/* problem cards: small subject-specific visuals instead of icons */
.problems .vis{height:40px;display:flex;align-items:center;justify-content:center;gap:5px;margin-bottom:10px}
.problems kbd{font-family:var(--font-body);font-weight:600;font-size:.85rem;min-width:30px;height:30px;padding:0 8px;display:inline-grid;place-items:center;background:var(--card);border:1px solid var(--line);border-bottom-width:3px;border-radius:8px;color:var(--ink)}
.vis-arrow{color:var(--grey);margin:0 4px;font-size:.9rem}
.step{font-size:.8rem;font-weight:500;height:30px;padding:0 11px;display:inline-grid;place-items:center;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--grey);animation:step-on 3.6s infinite}
.step:nth-child(3){animation-delay:1.2s}
.step:nth-child(5){animation-delay:2.4s}
@keyframes step-on{0%,30%{background:var(--ink);border-color:var(--ink);color:var(--paper)}34%,100%{background:var(--paper);border-color:var(--line);color:var(--grey)}}
.problems .step + .vis-arrow{margin:0 1px}
.loop-ico{color:var(--grey);font-size:1.05rem;margin-left:6px;display:inline-block;animation:spin-loop 3.6s linear infinite}
@keyframes spin-loop{to{transform:rotate(360deg)}}
.chip{font-size:.78rem;font-weight:500;padding:5px 9px;border:1px solid var(--line);border-radius:999px;background:var(--paper);color:var(--grey);white-space:nowrap}
.chip.chip-more{background:var(--ink);border-color:var(--ink);color:var(--paper)}
@media (max-width:600px){
  .problems > div{display:flex;flex-direction:column;align-items:flex-start;text-align:left;padding:22px}
  .problems .vis{justify-content:flex-start;margin-bottom:6px}
}