/* ============================================================================
   Averholm marketing site — shared design system ("The Registry Watch").
   Newsreader (serif display) + IBM Plex Sans/Mono, petrol-teal accent,
   hairline-ruled document grid. Full light + dark (three-state) themes.
   Used by every page in /marketing. No build step.
   ============================================================================ */

:root{
  --paper:#F6F7F9; --surface:#FFFFFF; --surface-2:#FBFCFD;
  --ink:#16202E; --ink-2:#46536A; --muted:#6B7789;
  --line:#E3E7ED; --line-strong:#D2D8E1;
  --accent:#0F5E7A; --accent-2:#0B4A61; --accent-tint:#E7F1F4;
  --ok:#197A56; --warn:#B26B00; --crit:#B4322B;
  --ok-bg:#E7F3ED; --warn-bg:#FAF0DE; --crit-bg:#F8E9E7; --accent-bg:#E7F1F4;
  --ai:#6A4BB8; --ai-bg:#EFEAF8; --ai-line:#D6C9F0;
  --shadow:0 1px 2px rgba(20,32,46,.04), 0 12px 32px -12px rgba(20,32,46,.14);
  --radius:7px;
  --serif:"Newsreader",Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#0E141C; --surface:#131C27; --surface-2:#0F1822;
    --ink:#E8EDF4; --ink-2:#AEBAC9; --muted:#7E8C9C;
    --line:#26313F; --line-strong:#33404F;
    --accent:#3EA7C6; --accent-2:#5FBBD6; --accent-tint:#132A33;
    --ok:#54BF93; --warn:#E0A64B; --crit:#E4796F;
    --ok-bg:#12271F; --warn-bg:#2A2214; --crit-bg:#2C1817; --accent-bg:#122831;
    --ai:#A78BFA; --ai-bg:#241B33; --ai-line:#3D2F55;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 16px 40px -16px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --paper:#0E141C; --surface:#131C27; --surface-2:#0F1822;
  --ink:#E8EDF4; --ink-2:#AEBAC9; --muted:#7E8C9C;
  --line:#26313F; --line-strong:#33404F;
  --accent:#3EA7C6; --accent-2:#5FBBD6; --accent-tint:#132A33;
  --ok:#54BF93; --warn:#E0A64B; --crit:#E4796F;
  --ok-bg:#12271F; --warn-bg:#2A2214; --crit-bg:#2C1817; --accent-bg:#122831;
  --ai:#A78BFA; --ai-bg:#241B33; --ai-line:#3D2F55;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 16px 40px -16px rgba(0,0,0,.6);
}

*{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}
::selection{background:var(--accent);color:#fff}
a{color:var(--accent);text-decoration:none}
h1,h2,h3,h4{font-family:var(--serif);font-weight:500;color:var(--ink);text-wrap:balance;letter-spacing:-.01em;margin:0}
p{margin:0}
img{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 28px}
.wrap-narrow{max-width:760px;margin:0 auto;padding:0 28px}
.eyebrow{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.num{font-variant-numeric:tabular-nums}
.mono{font-family:var(--mono)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5em;font-family:var(--sans);font-weight:600;font-size:15px;padding:.72em 1.25em;border-radius:var(--radius);border:1px solid transparent;cursor:pointer;transition:.15s ease;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-lg{font-size:16px;padding:.85em 1.5em}

/* header / nav */
header.top{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.topbar{display:flex;align-items:center;gap:24px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:22px;font-weight:600;color:var(--ink);letter-spacing:-.02em}
.brand .mk{width:26px;height:26px;flex:none}
nav.main{margin-left:auto;display:flex;align-items:center;gap:26px}
nav.main a.navlink{color:var(--ink-2);font-size:15px;font-weight:500}
nav.main a.navlink:hover,nav.main a.navlink[aria-current="page"]{color:var(--accent)}
.nav-cta{display:flex;gap:10px;align-items:center}
@media(max-width:860px){ nav.main a.navlink{display:none} }

.lang{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.04em}
.lang a{color:var(--muted)}
.lang a:hover{color:var(--accent)}
.lang .cur{color:var(--ink);font-weight:600}
.lang .sep{color:var(--line-strong)}
@media(max-width:520px){ .lang{display:none} }

.theme-toggle{background:transparent;border:1px solid var(--line-strong);color:var(--ink-2);width:36px;height:36px;border-radius:8px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}
.theme-toggle:hover{border-color:var(--accent);color:var(--accent)}
.theme-toggle svg{width:17px;height:17px}
.sun{display:none}
[data-theme="dark"] .sun{display:block}[data-theme="dark"] .moon{display:none}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]) .sun{display:block}:root:not([data-theme="light"]) .moon{display:none}}

/* generic sections */
section{padding:82px 0;border-bottom:1px solid var(--line)}
.sec-head{max-width:62ch;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{font-size:clamp(28px,3.4vw,38px);line-height:1.1;margin-top:12px}
.sec-head p{color:var(--ink-2);font-size:18px;margin-top:16px}

/* page hero (inner pages) */
.page-hero{padding:70px 0 56px;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(34px,4.4vw,50px);line-height:1.06;margin-top:16px}
.page-hero p.lede{font-size:19px;color:var(--ink-2);max-width:56ch;margin-top:20px;line-height:1.55}

/* home hero */
.hero{padding:76px 0 64px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(38px,5vw,58px);line-height:1.04;margin:20px 0 0}
.hero h1 em{font-style:italic;color:var(--accent)}
.lede{font-size:19px;color:var(--ink-2);max-width:36ch;margin:22px 0 30px;line-height:1.55}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.trust{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.trust span{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--muted);font-weight:500}
.trust svg{width:15px;height:15px;color:var(--accent);flex:none}
@media(max-width:900px){ .hero-grid{grid-template-columns:1fr;gap:40px} .lede{max-width:52ch} }

/* live monitoring feed mock */
.feed{background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);overflow:hidden}
.feed-head{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--line);background:var(--surface-2)}
.feed-head .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);position:relative}
.feed-head .dot::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:1px solid var(--ok);opacity:.5;animation:pulse 2.4s ease-out infinite}
@keyframes pulse{0%{transform:scale(.6);opacity:.6}100%{transform:scale(1.9);opacity:0}}
@media(prefers-reduced-motion:reduce){.feed-head .dot::after{animation:none}}
.feed-title{font-size:13px;font-weight:600;letter-spacing:.02em}
.feed-title span{color:var(--muted);font-weight:400}
.feed-meta{margin-left:auto;font-family:var(--mono);font-size:11px;color:var(--muted)}
.frow{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:13px 16px;border-bottom:1px solid var(--line)}
.frow:last-child{border-bottom:0}
.pill{font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:3px 8px;border-radius:5px;white-space:nowrap}
.p-crit{color:var(--crit);background:var(--crit-bg)}
.p-warn{color:var(--warn);background:var(--warn-bg)}
.p-ok{color:var(--ok);background:var(--ok-bg)}
.p-due{color:var(--accent);background:var(--accent-bg)}
.frow .what{min-width:0}
.frow .what b{font-weight:600;font-size:14.5px;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.frow .what small{color:var(--muted);font-size:12.5px;font-family:var(--mono)}
.frow .go{font-size:13px;font-weight:600;color:var(--accent)}
@media(max-width:460px){ .frow .go{display:none} }

/* feature grid */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.feat{background:var(--surface);padding:30px 26px;display:flex;flex-direction:column;gap:12px}
.feat .ic{width:34px;height:34px;color:var(--accent)}
.feat h3{font-family:var(--sans);font-weight:600;font-size:18px;letter-spacing:0}
.feat p{color:var(--ink-2);font-size:15px;line-height:1.55}
.feat .ref{font-family:var(--mono);font-size:11px;color:var(--muted);letter-spacing:.08em;margin-top:auto;padding-top:6px}
.feat a.more{font-size:14px;font-weight:600;margin-top:2px}
@media(max-width:860px){ .features{grid-template-columns:repeat(2,1fr)} }
@media(max-width:560px){ .features{grid-template-columns:1fr} }

/* stat band */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.stat .big{font-family:var(--serif);font-size:clamp(30px,4vw,44px);line-height:1;color:var(--ink)}
.stat .lbl{color:var(--ink-2);font-size:14.5px;margin-top:8px;line-height:1.4}
@media(max-width:720px){ .stats{grid-template-columns:repeat(2,1fr);gap:26px} }

/* dark band (stakes / callout) */
.band-ink{background:var(--ink);color:#fff;border:0}
:root[data-theme="dark"] .band-ink,:root:not([data-theme="light"]) .band-ink{background:#0A1018}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]) .band-ink{background:#0A1018}}
.band-ink h2{color:#fff}.band-ink p{color:#C4CDDA}.band-ink .eyebrow{color:var(--accent-2)}
.band-ink strong{color:#fff}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;counter-reset:step}
.step{position:relative;padding-top:28px}
.step::before{counter-increment:step;content:"0" counter(step);position:absolute;top:0;left:0;font-family:var(--mono);font-size:12px;font-weight:600;color:var(--accent);letter-spacing:.1em}
.step::after{content:"";position:absolute;top:6px;left:34px;right:-13px;height:1px;background:var(--line-strong)}
.step:last-child::after{display:none}
.step h3{font-family:var(--sans);font-weight:600;font-size:17px;margin-bottom:8px}
.step p{color:var(--ink-2);font-size:14.5px;line-height:1.5}
@media(max-width:860px){ .steps{grid-template-columns:repeat(2,1fr);gap:32px} .step::after{display:none} }
@media(max-width:460px){ .steps{grid-template-columns:1fr} }

/* why / two-col reasons */
.why-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 44px}
.why{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;padding-top:22px;border-top:1px solid var(--line)}
.why .ic{width:26px;height:26px;color:var(--accent);margin-top:3px}
.why h3{font-family:var(--sans);font-weight:600;font-size:17px;margin-bottom:6px}
.why p{color:var(--ink-2);font-size:15px;line-height:1.55}
@media(max-width:720px){ .why-grid{grid-template-columns:1fr} }

/* deep feature block (product page) */
.block{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;padding:64px 0;border-bottom:1px solid var(--line)}
.block:nth-child(even) .block-media{order:-1}
.block h3{font-size:clamp(24px,2.8vw,32px);line-height:1.12}
.block .eyebrow{margin-bottom:14px;display:block}
.block p{color:var(--ink-2);font-size:16.5px;margin-top:16px;line-height:1.6}
.block ul.ticks{list-style:none;margin:22px 0 0;padding:0;display:flex;flex-direction:column;gap:11px}
.block ul.ticks li{display:grid;grid-template-columns:auto 1fr;gap:11px;font-size:15px;color:var(--ink-2);line-height:1.45}
.block ul.ticks li svg{width:18px;height:18px;color:var(--accent);margin-top:3px;flex:none}
.block-media{background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);overflow:hidden}
@media(max-width:820px){ .block{grid-template-columns:1fr;gap:32px;padding:48px 0} .block:nth-child(even) .block-media{order:0} }

/* prose */
.prose{max-width:70ch}
.prose h2{font-size:26px;margin:40px 0 14px}
.prose h3{font-family:var(--sans);font-weight:600;font-size:18px;margin:28px 0 10px}
.prose p{color:var(--ink-2);margin:14px 0;line-height:1.7}
.prose ul{color:var(--ink-2);padding-left:1.2em;line-height:1.7}
.prose li{margin:8px 0}
.prose strong{color:var(--ink)}

/* callout card */
.callout{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:8px;padding:22px 24px}
.callout p{color:var(--ink-2);font-size:15.5px;line-height:1.6}

/* pricing */
.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.price{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:28px 26px;display:flex;flex-direction:column;gap:18px}
.price.feature{border-color:var(--accent);box-shadow:var(--shadow);position:relative}
.price.feature .tag{position:absolute;top:-11px;left:26px;background:var(--accent);color:#fff;font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;padding:3px 10px;border-radius:5px}
.price .name{font-family:var(--sans);font-weight:600;font-size:15px;letter-spacing:.02em;color:var(--ink)}
.price .who{color:var(--muted);font-size:13px;margin-top:-12px}
.price .amt{font-family:var(--serif);font-size:40px;line-height:1;color:var(--ink)}
.price .amt small{font-family:var(--sans);font-size:14px;color:var(--muted);font-weight:500}
.price ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.price li{display:grid;grid-template-columns:auto 1fr;gap:9px;font-size:14.5px;color:var(--ink-2);line-height:1.4}
.price li svg{width:16px;height:16px;color:var(--accent);margin-top:3px}
@media(max-width:820px){ .prices{grid-template-columns:1fr;max-width:420px;margin:0 auto} }
.price-note{text-align:center;color:var(--muted);font-size:13px;margin-top:22px}

/* comparison table */
.cmp{width:100%;border-collapse:collapse;font-size:15px}
.cmp th,.cmp td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);color:var(--ink-2)}
.cmp thead th{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}
.cmp td:first-child,.cmp th:first-child{color:var(--ink);font-weight:500}
.cmp .yes{color:var(--ok);font-weight:600}
.cmp .no{color:var(--muted)}
.cmp-scroll{overflow-x:auto}

/* faq */
.faq{display:grid;gap:2px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
details{background:var(--surface)}
summary{cursor:pointer;list-style:none;padding:20px 24px;font-weight:600;font-size:16.5px;display:flex;justify-content:space-between;gap:16px;align-items:center}
summary::-webkit-details-marker{display:none}
summary .plus{color:var(--accent);font-family:var(--mono);font-size:20px;transition:.2s;flex:none}
details[open] summary .plus{transform:rotate(45deg)}
details .body{padding:0 24px 22px;color:var(--ink-2);font-size:15.5px;line-height:1.6;max-width:72ch}

/* final CTA */
.cta-final{background:var(--accent);border:0}
.cta-final .wrap{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-final h2{color:#fff;font-size:clamp(26px,3vw,36px);max-width:20ch}
.cta-final p{color:#DCEAEF;margin-top:12px;max-width:44ch}
.cta-final .btn-primary{background:#fff;color:var(--accent-2)}
.cta-final .btn-primary:hover{background:#EAF3F5}
.cta-final a.mailto{color:#fff;font-family:var(--mono);font-size:14px;border-bottom:1px solid rgba(255,255,255,.4)}

/* forms */
.form{display:grid;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:14px;font-weight:600;color:var(--ink)}
.field label .req{color:var(--crit)}
.field input,.field select,.field textarea{font-family:var(--sans);font-size:15px;color:var(--ink);background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius);padding:.7em .85em;width:100%}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.field textarea{resize:vertical;min-height:110px}
.field .hint{font-size:12.5px;color:var(--muted)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:560px){ .form-row{grid-template-columns:1fr} }
.form-note{font-size:12.5px;color:var(--muted);line-height:1.5}
.form-ok{background:var(--ok-bg);color:var(--ok);border:1px solid color-mix(in srgb,var(--ok) 40%,transparent);border-radius:var(--radius);padding:14px 16px;font-size:15px;font-weight:500}
.hidden{display:none}

/* footer */
footer{padding:54px 0 40px;background:var(--paper)}
.foot{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;align-items:flex-start}
.foot .brand{font-size:19px}
.foot p{color:var(--muted);font-size:13px;line-height:1.6;max-width:46ch;margin-top:14px}
.foot .cols{display:flex;gap:56px;flex-wrap:wrap}
.foot h4{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 12px;font-weight:600}
.foot a{display:block;color:var(--ink-2);font-size:14px;margin-bottom:9px}
.foot a:hover{color:var(--accent)}
.legal{margin-top:40px;padding-top:22px;border-top:1px solid var(--line);color:var(--muted);font-size:12.5px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* utilities */
.center{text-align:center}
.mt0{margin-top:0}
.tick{width:16px;height:16px;color:var(--accent)}


/* ============================================================ two-mode cards
   A pair of peer options set side by side — used for cloud vs. self-hosted, and
   for what AI does vs. what it never touches. Same document grammar as the rest
   of the sheet: hairline rules, serif heading, Plex body. */
.modes{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.mode{background:var(--surface);border:1px solid var(--line);border-radius:12px;
  padding:28px 28px 26px;display:flex;flex-direction:column;gap:13px}
.mode--alt{background:var(--surface-2);border-color:var(--line-strong)}
.mode .tagline{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted)}
.mode h3{font-family:var(--serif);font-weight:500;font-size:24px;line-height:1.15;color:var(--ink)}
.mode > p{color:var(--ink-2);font-size:15.5px;line-height:1.6}
.mode .boundary{margin-top:4px;border-top:1px solid var(--line);padding-top:15px;
  display:flex;flex-direction:column;gap:10px}
.mode .brow{display:grid;grid-template-columns:96px 1fr;gap:12px;align-items:baseline;font-size:14px}
.mode .brow .k{font-family:var(--mono);font-size:11px;letter-spacing:.05em;text-transform:uppercase;
  color:var(--muted)}
.mode .brow .v{color:var(--ink-2);line-height:1.45}
.mode .go{margin-top:auto;padding-top:16px;font-size:14.5px;font-weight:600}
@media(max-width:760px){ .modes{grid-template-columns:1fr} }

/* ================================================================= AI label
   Its own hue — 61 degrees off the teal accent, and clear of warn and crit.
   An AI draft is a category, not a status: it must not look like a problem. */
.ai-chip{display:inline-flex;align-items:center;gap:.42em;font-family:var(--mono);
  font-size:10.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ai);background:var(--ai-bg);border:1px solid var(--ai-line);
  border-radius:5px;padding:3px 8px;white-space:nowrap}
.ai-chip::before{content:"";width:.42em;height:.42em;border-radius:50%;
  background:currentColor;flex:none}
.callout--ai{border-left-color:var(--ai)}


/* Honeypot. Off-canvas rather than display:none — some bots skip hidden inputs,
   and this way the field is still "visible" to them while no person can reach it
   (aria-hidden and tabindex=-1 keep it away from screen readers and the keyboard). */
.hp{position:absolute!important;left:-9999px!important;top:auto;width:1px;height:1px;overflow:hidden}