/* Canon company site at Tailscale's craft level: neutral ground, white panels that carry real product evidence,
   near-black type and buttons, one accent per product (Octopus blue, Paws 'N' Board teal from its own UI).
   System sans; monospace only for config and commands. */
:root {
  --ground: #F5F5F3;
  --panel: #FFFFFF;
  --ink: #1C1C1E;
  --ink-2: #57585D;
  --line: #E3E2DE;
  --accent: #2B57E0;
  --accent-soft: #EBF0FD;
  --paws: #2D6676;
  --paws-ink: #264653;
  --polski-ink: #A83D4D;
  --polski-band: #A83D4D;
  --polski-soft: #FBEEF0;
  --blog-ink: #B8295F;
  --blog-band: #B8295F;
  --blog-soft: #FFF2F6;
  --octo-band: #17324A;
  --on-band: #FFFFFF;
  --on-band-2: #DCEFF3;
  --add-bg: #E6F4EA;
  --add-ink: #17643A;
  --del-bg: #FBE9E7;
  --del-ink: #A3261B;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --r-l: 22px;
  --r-m: 14px;
  --r-s: 9px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #131314; --panel: #1C1C1F; --ink: #F1F1EF; --ink-2: #A9A9A5; --line: #2E2E31;
    --accent: #8AA4FF; --accent-soft: #1B2237; --paws: #264653; --on-band-2: #DCEFF3;
    --polski-ink: #F09AA6; --polski-band: #7A2B38; --polski-soft: #2B171B; --blog-ink: #F48FB1; --blog-band: #7D1F45; --blog-soft: #2B1820; --octo-band: #0F2233;
    --add-bg: #12301E; --add-ink: #8FDDAA; --del-bg: #3A1714; --del-ink: #F4A69C; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ground: #131314; --panel: #1C1C1F; --ink: #F1F1EF; --ink-2: #A9A9A5; --line: #2E2E31;
  --accent: #8AA4FF; --accent-soft: #1B2237; --paws: #264653; --on-band-2: #DCEFF3;
    --polski-ink: #F09AA6; --polski-band: #7A2B38; --polski-soft: #2B171B; --blog-ink: #F48FB1; --blog-band: #7D1F45; --blog-soft: #2B1820; --octo-band: #0F2233;
  --add-bg: #12301E; --add-ink: #8FDDAA; --del-bg: #3A1714; --del-ink: #F4A69C; color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scrollbar-color: var(--line) var(--ground); }
body { margin: 0; background: var(--ground); color: var(--ink); font: 400 1.0625rem/1.6 var(--font); caret-color: var(--accent); }
::selection { background: color-mix(in srgb, var(--accent) 24%, transparent); }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-underline-offset: 0.22em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: 72rem; margin-inline: auto; padding-inline: 1.25rem; }

h1, h2, h3 { margin: 0; text-wrap: balance; }
h1 { font-size: clamp(2.5rem, 5.6vw, 4.4rem); line-height: 1.05; letter-spacing: -0.03em; font-weight: 650; }
h2 { font-size: clamp(1.85rem, 3.4vw, 2.75rem); line-height: 1.1; letter-spacing: -0.025em; font-weight: 650; }
h3 { font-size: 1.125rem; line-height: 1.35; font-weight: 650; letter-spacing: -0.01em; }
p { margin: 0; }
.lede { font-size: clamp(1.1rem, 1.6vw, 1.3rem); line-height: 1.55; color: var(--ink-2); }
.muted { color: var(--ink-2); }
.prose { max-width: 42rem; }
.prose > * + * { margin-top: 1rem; }
.head { max-width: 46rem; }
.head > * + * { margin-top: 1rem; }

/* header */
.site-header { position: sticky; top: 0; z-index: 10; background: var(--ground); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem 1.5rem; padding-block: 0.8rem; }
.brand { font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em; text-decoration: none; }
.site-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 0.25rem 1.5rem; }
.site-nav a { text-decoration: none; color: var(--ink-2); font-size: 0.97rem; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav .btn { color: var(--ground); }

/* buttons and links */
.btn { display: inline-flex; align-items: center; padding: 0.72rem 1.15rem; border-radius: var(--r-s); background: var(--ink); color: var(--ground); border: 1px solid var(--ink); font-weight: 600; font-size: 1rem; text-decoration: none; transition: transform 160ms cubic-bezier(.16,1,.3,1); }
.btn:hover { transform: translateY(-1px); }
.btn-small { padding: 0.5rem 0.85rem; font-size: 0.93rem; }
.btn-light { background: var(--on-band); color: var(--paws-ink); border-color: var(--on-band); }
.text-link { font-weight: 600; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; }
.center { text-align: center; }
.center .actions { justify-content: center; }
.center .lede, .center .head { margin-inline: auto; }

/* hero */
.hero { padding-block: clamp(3.5rem, 9vw, 6.5rem) clamp(2.5rem, 6vw, 4rem); }
.hero h1 { max-width: 16ch; }
.hero .lede { max-width: 40rem; margin-block: 1.5rem 2rem; }
.hero.center h1 { margin-inline: auto; }
.hero .note { margin-top: 1.25rem; font-size: 0.95rem; color: var(--ink-2); }

/* sections, panels, split */
.section { padding-block: clamp(2rem, 5vw, 3.5rem); }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r-l); padding: clamp(1.5rem, 4vw, 3.25rem); }
.split { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.split > * { min-width: 0; }
.split-text > * + * { margin-top: 1rem; }
.split-text .checks, .split-text .list { margin-top: 1.5rem; }
.split-text .actions { margin-top: 1.75rem; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }
.checks li { display: grid; grid-template-columns: 20px minmax(0, 1fr); gap: 0.65rem; align-items: start; }
.checks svg { width: 20px; height: 20px; margin-top: 3px; color: var(--accent); }
.list { margin: 0; padding-left: 1.15rem; }
.list li + li { margin-top: 0.55rem; }
.list li::marker { color: var(--ink-2); }
.status { font-size: 0.95rem; color: var(--ink-2); }

/* Octopus evidence: config diff and advisor example on a soft accent stage */
.stage { background: var(--accent-soft); border-radius: var(--r-m); padding: clamp(1rem, 3vw, 2rem); }
.diff { border: 1px solid var(--line); border-radius: var(--r-m); overflow: hidden; background: var(--panel); font: 0.86rem/1.75 var(--mono); font-variant-numeric: tabular-nums; box-shadow: 0 14px 30px -22px rgb(20 30 60 / 0.45); }
.diff-head, .diff-foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.3rem 1.25rem; padding: 0.6rem 1rem; font: 0.85rem/1.5 var(--font); color: var(--ink-2); }
.diff-head { border-bottom: 1px solid var(--line); }
.diff-foot { border-top: 1px solid var(--line); }
.diff-head b { color: var(--ink); font-weight: 600; }
.diff pre { margin: 0; padding: 0.7rem 0; overflow-x: auto; }
.diff code { display: block; padding: 0 1rem; white-space: pre; }
.diff .del { background: var(--del-bg); color: var(--del-ink); }
.diff .add { background: var(--add-bg); color: var(--add-ink); animation: settle 1.6s cubic-bezier(.16,1,.3,1) 0.6s both; }
@keyframes settle { from { box-shadow: inset 4px 0 0 var(--add-ink); } to { box-shadow: inset 0 0 0 var(--add-ink); } }
.advisor { margin-top: 1rem; border: 1px solid var(--line); border-radius: var(--r-m); padding: 1rem 1.1rem; background: var(--panel); box-shadow: 0 14px 30px -22px rgb(20 30 60 / 0.45); }
.advisor-who { display: flex; align-items: center; gap: 0.5rem; font-weight: 650; font-size: 0.95rem; }
.advisor-who svg { width: 18px; height: 18px; color: var(--accent); flex: none; }
.advisor p { margin-top: 0.45rem; font-size: 0.97rem; }
.advisor code, .prose code { font: 0.86em var(--mono); background: var(--ground); border: 1px solid var(--line); border-radius: 6px; padding: 0.05rem 0.35rem; }
.example-note { margin-top: 0.8rem; font-size: 0.85rem; color: var(--ink-2); }
.advice { margin: 0.8rem 0 0; display: grid; gap: 0.75rem; }
.advice dt { font-size: 0.8rem; font-weight: 600; color: var(--ink-2); }
.advice dd { margin: 0.15rem 0 0; font-size: 0.95rem; }
.advice ul { margin: 0; padding-left: 1.05rem; }
.advice li + li { margin-top: 0.2rem; }
.advice code { display: block; width: fit-content; max-width: 100%; margin-top: 0.3rem; overflow-wrap: anywhere; }

.advice .result { display: block; margin-top: 0.15rem; font-size: 0.9rem; color: var(--ink-2); }
.advisor-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.4rem 0.75rem; }
.advisor .advisor-incident { margin-top: 0.35rem; font-size: 0.88rem; color: var(--ink-2); }
.advisor .advisor-log { margin-top: 0.9rem; padding-top: 0.7rem; border-top: 1px solid var(--line); font-size: 0.85rem; color: var(--ink-2); }

/* product band */
.band { border-radius: var(--r-l); padding: clamp(2rem, 5vw, 4rem) clamp(1.25rem, 4vw, 3.5rem); background: var(--paws); color: var(--on-band); }
.band .lede, .band .status, .band .shot figcaption { color: var(--on-band-2); }
.band .head { margin-inline: auto; text-align: center; }
.shots { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 1.25rem; margin-top: clamp(2rem, 4vw, 3rem); align-items: end; }
.shot { margin: 0; }
.shot img { border-radius: var(--r-m); background: #fff; box-shadow: 0 24px 48px -26px rgb(0 0 0 / 0.55); }
.shot figcaption { margin-top: 0.65rem; font-size: 0.88rem; color: var(--ink-2); }
.panel .shot img, .section > .shot img { border: 1px solid var(--line); box-shadow: 0 18px 40px -28px rgb(0 0 0 / 0.45); }
/* cover: the product picture opens every product page, the headline follows */
.cover { padding-top: clamp(1rem, 3vw, 2rem); }
.cover .band { padding: clamp(1rem, 3.5vw, 2.75rem); }
.hero.after-cover { padding-top: clamp(2.25rem, 5vw, 3.5rem); }
.band-octopus { background: var(--octo-band); --on-band-2: #DCE5FF; }
.band-polski { background: var(--polski-band); --on-band-2: #F8E3E6; }
.band-blog { background: var(--blog-band); --on-band-2: #FCE6EE; }
.band .head + .shot { margin-top: clamp(2rem, 4vw, 3rem); }
.checks-polski svg { color: var(--polski-ink); }
.checks-blog svg { color: var(--blog-ink); }
.stage-polski { background: var(--polski-soft); }
.stage-blog { background: var(--blog-soft); }
.split.rev .split-text { order: 2; }
.split.rev { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); }
.stage .shot + .shot { margin-top: 1.25rem; }
.band-foot { margin-top: 2.25rem; display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 1rem 1.5rem; text-align: center; }

/* people */
.people { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.5rem, 4vw, 3rem); margin-top: 2.25rem; }
.person { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 1rem; align-items: start; }
.person > div > * + * { margin-top: 0.6rem; }
.person .role { margin-top: 0.15rem; color: var(--ink-2); }
.avatar { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; letter-spacing: -0.02em; background: var(--ink); color: var(--ground); }

/* text columns, not cards */
.cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem clamp(1.5rem, 4vw, 3rem); margin-top: 2.25rem; }
.cols p { margin-top: 0.45rem; color: var(--ink-2); }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 56rem; }

/* facts */
dl.facts { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 0.7rem 2rem; margin: 0; }
dl.facts dt { color: var(--ink-2); }
dl.facts dd { margin: 0; }

/* architecture in HTML, so text stays sharp and themed: team on top, Octopus in the middle, what it connects to below */
.arch { --gap: 2.25rem; margin: 2.25rem 0 0; }
.arch-row { position: relative; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.arch-in { margin-bottom: var(--gap); }
.arch-out { margin-top: var(--gap); }
.node { position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: var(--r-m); padding: 0.85rem 1rem; text-align: center; }
.node b { display: block; font-weight: 650; }
.node span { display: block; margin-top: 0.2rem; font-size: 0.9rem; line-height: 1.45; color: var(--ink-2); }
.arch-in .node::after, .arch-out .node::before { content: ""; position: absolute; left: 50%; height: var(--gap); border-left: 1.5px solid var(--ink-2); }
.arch-in .node::after { top: 100%; }
.arch-out .node::before { bottom: 100%; }
.arch-in .node::before, .arch-out .node::after { content: ""; position: absolute; left: calc(50% - 4.25px); border: solid transparent; border-width: 6px 5px 0; border-top-color: var(--ink-2); }
.arch-in .node::before { top: calc(100% + var(--gap) - 6px); }
.arch-out .node::after { top: -6px; }
.node-claude { border: 1.5px dashed var(--accent); }
.arch-out .node-claude::before { border-left-style: dashed; border-left-color: var(--accent); }
.arch-out .node-claude::after { border-top-color: var(--accent); }
.arch-core { background: var(--accent-soft); border-radius: var(--r-l); padding: clamp(1rem, 3vw, 1.75rem); }
.arch-title { text-align: center; font-weight: 650; font-size: 1.05rem; margin-bottom: 1rem; }
.flow { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.75rem; }
.flow-step { position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: var(--r-m); padding: 1rem 1.05rem 1.1rem; }
.flow-step + .flow-step::before { content: ""; position: absolute; left: -1.15rem; top: 1.35rem; width: 0.55rem; height: 0.55rem; border-top: 1.5px solid var(--ink-2); border-right: 1.5px solid var(--ink-2); transform: rotate(45deg); }
.flow-step b { display: block; font-size: 1.05rem; font-weight: 650; }
.flow-step ul { list-style: none; margin: 0.55rem 0 0; padding: 0; display: grid; gap: 0.4rem; }
.flow-step li { position: relative; padding-left: 0.9rem; font-size: 0.9rem; line-height: 1.45; color: var(--ink-2); }
.flow-step li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.flow-advisor { margin-top: 1.25rem; background: var(--panel); border: 1.5px dashed var(--accent); border-radius: var(--r-m); padding: 0.9rem 1.1rem; display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 0.75rem; }
.flow-advisor p { flex-basis: 100%; font-size: 0.93rem; color: var(--ink-2); }
.pill { font-variant-numeric: tabular-nums; font-size: 0.78rem; font-weight: 600; line-height: 1.6; color: var(--accent); background: var(--accent-soft); border-radius: 999px; padding: 0 0.55rem; }
.arch figcaption { margin-top: 1.25rem; font-size: 0.9rem; color: var(--ink-2); }

/* footer */
.site-footer { border-top: 1px solid var(--line); margin-top: clamp(2rem, 5vw, 3.5rem); padding-block: 2.5rem 3rem; color: var(--ink-2); font-size: 0.95rem; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr)); gap: 2rem; }
.footer-grid h2 { font-size: 0.95rem; letter-spacing: 0; font-weight: 600; color: var(--ink); margin-bottom: 0.6rem; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.4rem; }
.footer-grid a { text-decoration: none; }
.footer-grid a:hover { color: var(--ink); text-decoration: underline; }
.footer-brand .brand { color: var(--ink); }
.footer-brand p { margin-top: 0.5rem; max-width: 22rem; }

/* small joins */
[id] { scroll-margin-top: 5rem; }
figure.diff { margin: 0; }
.advisor .advisor-who { margin-top: 0; }
.panel.center .lede { max-width: 36rem; margin-block: 1rem 1.75rem; }
.section > .actions { margin-top: 2rem; }
.band > .shot img { box-shadow: 0 30px 60px -30px rgb(0 0 0 / 0.6); }
.band > .shot figcaption { text-align: center; }

@media (max-width: 820px) {
  .split, .shots, .people, .cols { grid-template-columns: 1fr; }
  .split.rev .split-text { order: 0; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .site-nav .btn { display: none; }
  /* stacked: one connector per row instead of one per node */
  .arch-row { grid-template-columns: 1fr; gap: 0.6rem; }
  .arch-row .node::before, .arch-row .node::after { display: none; }
  .arch-in::after, .arch-out::before { content: ""; position: absolute; left: 50%; height: var(--gap); border-left: 1.5px solid var(--ink-2); }
  .arch-in::after { top: 100%; }
  .arch-out::before { bottom: 100%; }
  .arch-in::before, .arch-out::after { content: ""; position: absolute; left: calc(50% - 4.25px); border: solid transparent; border-width: 6px 5px 0; border-top-color: var(--ink-2); }
  .arch-in::before { top: calc(100% + var(--gap) - 6px); }
  .arch-out::after { top: -6px; }
  .flow { grid-template-columns: 1fr; gap: 1.5rem; }
  .flow-step + .flow-step::before { left: calc(50% - 0.275rem); top: -1.05rem; transform: rotate(135deg); }
}
@media (max-width: 480px) {
  .site-nav { gap: 0.25rem 1rem; }
  .panel { padding: 1.25rem; }
  .stage { padding: 0.75rem; }
  .diff { font-size: 0.78rem; }
  .diff code { padding-inline: 0.75rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}