/* PortKnot landing — calm, content-first. */
:root{
  --bg:#f6f5f2;--surface:#fff;--soft:#fbfaf7;--ink:#1c1917;--text:#57534e;--muted:#6b6259;--faint:#6f665d;
  --line:#e6e3dd;--line-strong:#d6d3d1;--accent:#4f46e5;--accent-soft:#eef2ff;--accent-line:#c7d2fe;
  --green:#047857;--green-soft:#ecfdf5;--amber:#92400e;--amber-soft:#fffbeb;
  --radius:12px;--max:1120px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,ul,li,figure{margin:0;padding:0}
ul{list-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
img,svg{display:block;max-width:100%}
::selection{background:#c7d2fe;color:#1e1b4b}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:16px;top:-60px;z-index:100;padding:10px 14px;border-radius:8px;background:#fff;border:1px solid var(--line);color:var(--ink);font-size:13px;font-weight:600;box-shadow:0 8px 24px -14px rgba(28,25,23,.3)}
.skip:focus{top:14px}
.container{width:min(var(--max),calc(100% - 40px));margin-inline:auto}
.eyebrow{font-size:11px;font-weight:650;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.muted{color:var(--muted)}
.small{font-size:12.5px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(246,245,242,.97);border-bottom:1px solid transparent}
.site-header.is-scrolled{border-bottom-color:var(--line)}
.header-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:inline-flex;align-items:center;gap:9px;font-weight:700;color:var(--ink);font-size:16px;letter-spacing:-.02em}
.brand-mark{width:30px;height:30px;border-radius:8px;background:var(--accent);display:grid;place-items:center;color:#fff;font-size:11px;font-weight:700;flex:none}
.nav{display:flex;align-items:center;gap:2px}
.nav a{padding:8px 11px;border-radius:7px;color:var(--muted);font-size:12.5px;font-weight:500}
.nav a:hover{background:#ece9e3;color:var(--ink)}
.header-actions{display:flex;align-items:center;gap:7px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;padding:9px 14px;border:1px solid transparent;border-radius:8px;font-size:12.5px;font-weight:600;line-height:1.1;white-space:nowrap;transition:background-color .12s,border-color .12s,color .12s}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-primary:hover{background:#4338ca;border-color:#4338ca}
.btn-secondary{background:#fff;border-color:var(--line-strong);color:var(--ink)}
.btn-secondary:hover{background:var(--soft);border-color:#b8b2a8}
.btn-ghost{background:transparent;border-color:transparent;color:var(--muted)}
.btn-ghost:hover{background:#ece9e3;color:var(--ink)}
.btn-lg{min-height:44px;padding:11px 18px;font-size:13.5px}
.menu-button{display:none;width:38px;height:38px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);align-items:center;justify-content:center}
.mobile-nav{display:none;border-top:1px solid var(--line);padding:10px 0 14px}
.mobile-nav a{display:block;padding:10px 4px;font-size:14px;color:var(--text)}
.mobile-nav .btn{margin-top:6px;width:100%}

/* hero */
.hero{padding:72px 0 56px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.95fr);gap:56px;align-items:center}
.hero h1{font-size:clamp(2.6rem,5vw,4.15rem);line-height:1.04;letter-spacing:-.045em;color:var(--ink);font-weight:650;max-width:12ch}
.hero-lede{margin-top:18px;max-width:54ch;font-size:16px;line-height:1.65;color:var(--text)}
.hero-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:24px}
.hero-trust{display:flex;gap:14px;flex-wrap:wrap;margin-top:18px;color:var(--muted);font-size:12px}
.hero-trust span{display:inline-flex;align-items:center;gap:5px}
.hero-trust span::before{content:"";width:4px;height:4px;border-radius:50%;background:#10b981}
.hero-art{padding:8px;border:1px solid var(--line);border-radius:16px;background:#fff}
.hero-art img{width:100%;height:auto;border-radius:10px}
.hero-caption{margin-top:10px;text-align:center;font-size:11.5px;color:var(--muted)}

/* sections */
.section{padding:76px 0}
.section--soft{background:transparent;border-top:1px solid var(--line);border-bottom:0}
.section-head{max-width:1100px}
.section-head h2{margin-top:8px;font-size:clamp(1.8rem,3.3vw,2.6rem);line-height:1.12;letter-spacing:-.035em;color:var(--ink);font-weight:650}
.section-head p{margin-top:12px;max-width:100%;font-size:14px;line-height:1.7;color:var(--text)}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:32px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:32px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}
.card h3{font-size:14px;color:var(--ink);font-weight:650}
.card p{margin-top:6px;font-size:12.5px;line-height:1.65;color:var(--muted)}
.card .icon{width:30px;height:30px;border-radius:8px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin-bottom:14px;font-size:13px;font-weight:700}
.problem-card{border-left:1px solid var(--line)}
.step{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}
.step span{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-size:10px;font-weight:700}
.step h3{margin-top:12px;font-size:13.5px;color:var(--ink)}
.step p{margin-top:5px;font-size:12px;line-height:1.6;color:var(--muted)}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:48px;align-items:center}
.split-art{padding:7px;border:1px solid var(--line);border-radius:14px;background:#fff}
.split-art img{width:100%;height:auto;border-radius:9px}
.split h2{font-size:clamp(1.7rem,2.8vw,2.25rem);line-height:1.15;letter-spacing:-.03em;color:var(--ink)}
.split p{margin-top:12px;font-size:14px;line-height:1.7;color:var(--text)}
.checklist{display:grid;gap:10px;margin-top:20px}
.checklist li{display:flex;gap:9px;align-items:flex-start;font-size:13px;color:var(--text);line-height:1.55}
.checklist li::before{content:"✓";flex:none;width:18px;height:18px;border-radius:50%;background:var(--green-soft);color:var(--green);display:grid;place-items:center;font-size:10px;font-weight:700;margin-top:1px}
.band{display:grid;grid-template-columns:1.2fr 2fr;gap:32px;align-items:center}
.band h2{font-size:22px;line-height:1.2;letter-spacing:-.02em;color:var(--ink)}
.band p{margin-top:7px;font-size:13px;line-height:1.65;color:var(--muted)}
.band-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.band-item{padding:14px;border:1px solid var(--line);border-radius:10px;background:#fff}
.band-item strong{display:block;font-size:12.5px;color:var(--ink)}
.band-item span{display:block;margin-top:3px;font-size:11.5px;line-height:1.55;color:var(--muted)}

/* pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:32px}
.price-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px}
.price-card--featured{border-color:var(--accent-line);background:#fbfbff}
.price-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.price-top h3{font-size:14px;color:var(--ink)}
.price-tag{font-size:10px;font-weight:650;color:var(--accent);background:var(--accent-soft);padding:3px 7px;border-radius:999px}
.price{display:flex;align-items:baseline;gap:3px;margin-top:14px}
.price strong{font-size:30px;line-height:1;letter-spacing:-.04em;color:var(--ink)}
.price span{font-size:12px;color:var(--muted)}
.price-note{margin-top:4px;font-size:11px;color:var(--muted)}
.price-card .btn{margin-top:16px;width:100%}
.price-list{display:grid;gap:7px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.price-list li{display:flex;gap:7px;font-size:12px;line-height:1.5;color:var(--text)}
.price-list li::before{content:"✓";color:var(--green);font-weight:700;font-size:11px}
.price-foot{margin-top:12px;font-size:10.5px;line-height:1.5;color:var(--faint)}

/* faq */
.faq-list{margin-top:24px;border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:17px 2px;cursor:pointer;font-size:13.5px;font-weight:600;color:var(--ink);list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";width:22px;height:22px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--muted);font-size:14px;flex:none}
.faq-list details[open] summary::after{content:"−"}
.faq-list p{padding:0 34px 16px 2px;font-size:12.5px;line-height:1.7;color:var(--muted)}

/* CTA + footer */
.cta{padding:64px 0}
.cta-box{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:26px;border:1px solid var(--line);border-radius:14px;background:#fff}
.cta-box h2{font-size:24px;line-height:1.2;letter-spacing:-.025em;color:var(--ink)}
.cta-box p{margin-top:5px;font-size:13px;color:var(--muted)}
.cta-actions{display:flex;gap:8px;flex-wrap:wrap}
.site-footer{border-top:1px solid var(--line);padding:28px 0 40px;background:#f1efea}
.footer-grid{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
.footer-brand p{margin-top:8px;font-size:12px;color:var(--muted);max-width:36ch}
.footer-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-links a{font-size:12px;color:var(--muted)}
.footer-links a:hover{color:var(--ink)}
.footer-bottom{margin-top:24px;padding-top:14px;border-top:1px solid var(--line-strong);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:10.5px;color:var(--faint)}

@media(max-width:980px){
  .hero{padding:52px 0 40px}.hero-grid{grid-template-columns:1fr;gap:32px}.hero h1{max-width:16ch}.hero-art{order:2}
  .split{grid-template-columns:1fr;gap:28px}.split-art{order:2}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .band{grid-template-columns:1fr;gap:18px}.band-list{grid-template-columns:repeat(3,1fr)}
  .pricing-grid{grid-template-columns:1fr 1fr}.price-card:last-child{grid-column:1/-1}
}
@media(max-width:720px){
  .container{width:calc(100% - 32px)}
  .nav,.header-actions .btn-ghost{display:none}
  .menu-button{display:inline-flex}
  .mobile-nav{display:none}.site-header.is-open .mobile-nav{display:block}
  .hero h1{font-size:clamp(2.25rem,9vw,3.2rem)}
  .hero-lede{font-size:15px}
  .section{padding:52px 0}.section-head h2{font-size:1.85rem}
  .grid-3,.grid-4,.pricing-grid,.band-list{grid-template-columns:1fr}
  .price-card:last-child{grid-column:auto}
  .cta-box{align-items:flex-start;flex-direction:column}.cta-actions{width:100%}.cta-actions .btn{flex:1}
  .footer-grid{flex-direction:column}.footer-links{gap:14px}
  .btn-lg{min-height:46px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}

.hero-contrast{margin-top:12px;max-width:56ch;color:var(--ink);font-size:13px;line-height:1.6;font-weight:500}
.hero-contrast::before{content:"";display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--accent);margin-right:7px;vertical-align:2px}
.fit-check{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:48px;align-items:center}
.fit-check h2{font-size:clamp(1.6rem,2.7vw,2.2rem);line-height:1.15;letter-spacing:-.03em;color:var(--ink);max-width:100%}
.fit-check>div>p:last-child{margin-top:12px;max-width:52ch;font-size:13.5px;line-height:1.7;color:var(--text)}
.fit-check__card{padding:20px;border:1px solid var(--border);border-left:3px solid var(--accent-line);border-radius:10px;background:#fff}
.fit-check__label{display:block;font-size:10px;font-weight:650;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.fit-check__card p{margin-top:7px;font-size:13px;line-height:1.7;color:var(--text)}
@media(max-width:900px){.fit-check{grid-template-columns:1fr;gap:22px}.fit-check h2{max-width:20ch}}

.revenue-line{margin-top:24px;padding:14px 16px;border-left:3px solid var(--accent-line);border-radius:0 8px 8px 0;background:#fff;color:var(--ink);font-size:14px;font-weight:600;line-height:1.55}
.grid-4 .card{padding:16px}
.pulse-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:30px}
.pulse-card{padding:16px;border:1px solid var(--border);border-radius:10px;background:#fff}
.pulse-card__label{display:block;font-size:10px;font-weight:650;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.pulse-card strong{display:block;margin-top:10px;font-size:30px;line-height:1;letter-spacing:-.04em;color:var(--ink);font-weight:650}
.pulse-card p{margin-top:5px;font-size:11.5px;line-height:1.55;color:var(--muted)}
.pulse-note{margin-top:10px;font-size:10.5px;color:var(--faint)}
@media(max-width:900px){.pulse-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.pulse-grid{grid-template-columns:1fr}}

.price-best{margin-top:8px;padding-left:9px;border-left:2px solid var(--accent-line);font-size:10.5px;line-height:1.55;color:var(--muted)}

.demo{display:grid;grid-template-columns:250px minmax(0,1fr);min-height:310px;border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden}
.demo-side{border-right:1px solid var(--line);padding:14px;background:#fbfaf8}
.demo-side-head{display:flex;justify-content:space-between;align-items:center;padding:0 4px 10px;color:var(--ink);font-size:11px}.demo-side-head span{color:var(--faint);font-size:10px}
.demo-reply{display:grid;grid-template-columns:6px minmax(0,1fr) auto;gap:8px;align-items:center;padding:9px;border:1px solid transparent;border-radius:8px;margin-bottom:4px}
.demo-reply.is-active{border-color:#c7d2fe;background:#eef2ff}.demo-reply i{width:6px;height:6px;border-radius:50%;background:#c7d2fe}.demo-reply.is-active i{background:var(--accent)}
.demo-reply div{display:grid;gap:1px;min-width:0}.demo-reply strong{font-size:10.5px;color:var(--ink);font-weight:600}.demo-reply span{font-size:9.5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.demo-reply em{font-size:8.5px;color:var(--faint);font-style:normal}
.demo-main{padding:18px;min-width:0;position:relative}
.demo-main-top{display:flex;align-items:center;gap:7px;flex-wrap:wrap;padding-bottom:12px;border-bottom:1px solid var(--line)}.demo-main-top strong{font-size:12px;color:var(--ink)}.demo-main-top span{font-size:10px;color:var(--muted)}.demo-badge{margin-left:auto;padding:2px 7px;border:1px solid #c7d2fe;border-radius:999px;color:#4338ca!important;background:#eef2ff;font-size:9px!important;font-weight:600}
.demo-message{max-width:52ch;margin-top:16px;font-size:13px;line-height:1.65;color:var(--ink)}.demo-note{margin-top:8px;font-size:10px;color:var(--muted)}
.demo-signal{margin-top:14px;padding:12px;border:1px solid var(--line);border-left:3px solid var(--accent-line);border-radius:8px;background:#fbfaff;transition:opacity .25s ease}.demo-kicker{display:block;font-size:8.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}.demo-signal strong{display:block;margin-top:5px;font-size:12px;color:var(--ink)}.demo-signal p{margin-top:3px;font-size:10.5px;color:var(--muted);line-height:1.55}.demo-signal .btn{margin-top:9px;min-height:30px!important;font-size:10px!important}
.demo-toast{position:absolute;right:16px;bottom:16px;padding:8px 10px;border:1px solid #a7f3d0;border-radius:8px;background:#ecfdf5;color:#047857;font-size:10px;font-weight:600}
.demo-controls{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-top:12px}.demo-step{padding:6px 9px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--muted);font-size:10px;cursor:pointer}.demo-step.is-active{border-color:#c7d2fe;background:#eef2ff;color:#4338ca;font-weight:600}#demo-status{margin-left:auto;font-size:9.5px;color:var(--faint)}
.demo-foot{margin-top:9px;font-size:10px;color:var(--faint)}.demo-foot a{color:var(--accent)}
@media(max-width:760px){.demo{grid-template-columns:1fr}.demo-side{border-right:0;border-bottom:1px solid var(--line)}.demo-reply{padding:7px}.demo-main{min-height:290px}.demo-badge{margin-left:0}.demo-controls{gap:4px}.demo-step{font-size:9px;padding:5px 7px}#demo-status{margin-left:0;width:100%}}

.demo{min-height:390px}
.demo-side-sub{margin:0 4px 8px;font-size:9px;color:var(--faint)}
.demo-filters{display:flex;flex-wrap:wrap;gap:3px;margin-bottom:7px}.demo-filters button{padding:3px 6px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--muted);font-size:8.5px}.demo-filters button.is-active{border-color:#c7d2fe;background:#eef2ff;color:#4338ca;font-weight:600}
.demo-select{width:100%;margin-bottom:6px;padding:5px 6px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--muted);font-size:9px}
.demo-main-top{gap:8px;align-items:flex-start}.demo-main-top>div{display:grid;gap:1px;min-width:0}.demo-avatar{display:grid;place-items:center;flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:#eef2ff;color:#4338ca;font-size:10px;font-weight:700}
.demo-main-top strong{font-size:12px}.demo-main-top span{font-size:9.5px}.demo-main-top .demo-badge{margin-left:auto;align-self:center}
.demo-thread-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:8px}.demo-thread-actions button{border:0;background:transparent;color:var(--muted);font-size:9px;padding:2px 0}.demo-thread-actions button:hover{color:var(--ink)}
.demo-signal{margin-top:12px}.demo-signal-actions{display:flex;align-items:center;gap:10px;margin-top:9px}.demo-signal-actions span{color:var(--muted);font-size:9px}
.demo-composer{margin-top:12px;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:#fff}.demo-composer span{display:block;font-size:8.5px;font-weight:600;color:var(--muted)}.demo-composer div{margin-top:5px;color:var(--faint);font-size:10px}
.demo-toast{right:14px;bottom:14px}

.pricing-trial{margin-top:22px;font-size:12px;line-height:1.6;color:var(--muted)}
.pricing-trial + .pricing-grid{margin-top:14px}