/* =============================================================
   Raymond Doan site stylesheet
   Layout concept: a dark operations console. A fixed ambient glow
   and faint grid sit behind the content, the sticky nav carries a
   gradient CTA, featured items get gradient outlines, and mono
   eyebrows label every section.
   ============================================================= */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
img, svg { max-width: 100%; }
[hidden] { display: none !important; }

/* ---------- tokens: one deliberate palette ("Lagoon") ----------
   Deep petrol teal with amber and coral accents. The site keeps this single
   look on purpose. It does not switch to a white theme when the viewer's
   device or app is in light mode. */
:root {
  color-scheme: dark;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);

  --bg: #103a42;
  --surface: #1b4c55;
  --surface-2: #28616c;
  --fg: #effcfd;
  --muted: #b8dae0;
  --accent: #ffb84d;
  --accent-2: #ff7a6b;
  --on-accent: #2b1204;
  --border: rgba(239, 252, 253, 0.16);
  --border-strong: rgba(239, 252, 253, 0.32);
  --glow-1: rgba(255, 184, 77, 0.26);
  --glow-2: rgba(47, 211, 196, 0.30);
  --glow-3: rgba(255, 122, 107, 0.18);
  --grid-line: rgba(239, 252, 253, 0.08);
  --shadow: rgba(2, 20, 26, 0.50);

  --font-display: 'Hanken Grotesk', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;
}

/* ---------- page + ambient background ---------- */
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -1;
  pointer-events: none;
}
/* soft amber and teal light from the corners, drifting slowly */
body::before {
  inset: -20%;
  background:
    radial-gradient(45rem 32rem at 15% 10%, var(--glow-1), transparent 65%),
    radial-gradient(40rem 30rem at 88% 4%, var(--glow-2), transparent 65%),
    radial-gradient(48rem 32rem at 55% 100%, var(--glow-3), transparent 65%);
  animation: drift 48s ease-in-out infinite alternate;
}
/* faint grid that fades out toward the bottom */
body::after {
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 100% 85% at 50% 0%, #000 30%, transparent 88%);
  mask-image: radial-gradient(ellipse 100% 85% at 50% 0%, #000 30%, transparent 88%);
}
@keyframes drift {
  from { transform: translate3d(-2%, -1%, 0) scale(1); }
  to   { transform: translate3d(2%, 2%, 0) scale(1.05); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  body::before { animation: none; }
}

/* ---------- type ---------- */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  text-wrap: balance;
  margin: 0 0 0.5em;
}
h1 { font-size: clamp(2.1rem, 5vw, 3.2rem); line-height: 1.1; letter-spacing: -0.015em; }
h2 { font-size: clamp(1.5rem, 3.2vw, 2rem); line-height: 1.2; letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; line-height: 1.3; }
p { margin: 0 0 1em; max-width: 65ch; text-wrap: pretty; }
p.lede { max-width: 58ch; color: var(--muted); font-size: 1.1rem; }
a { color: var(--accent); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  margin: 0 0 1em;
}
.eyebrow::before { content: "//"; color: var(--muted); }

.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  padding: 0.25em 0.6em;
  white-space: nowrap;
  font-weight: 400;
}
.tag.hot {
  color: var(--on-accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
}

.gradient-rule {
  height: 4px;
  width: 64px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  margin-bottom: 1.25em;
}

/* ---------- layout ---------- */
.wrap { max-width: 1040px; margin: 0 auto; padding-inline: 20px; }
section { padding-block: 64px; scroll-margin-top: 100px; }
.band {
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--surface) 72%, transparent),
    color-mix(in srgb, var(--surface) 38%, transparent));
  border-block: 1px solid var(--border);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 24px;
  flex-wrap: wrap;
  margin-bottom: 2em;
}
.section-head h2 { margin-bottom: 0.3em; }
.section-head p { margin: 0; }
.section-link {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  text-decoration: none;
  white-space: nowrap;
}
.section-link:hover { text-decoration: underline; }

.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.split  { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }

/* ---------- navigation ---------- */
header.site-nav {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid var(--border-strong);
  box-shadow: 0 14px 30px -24px var(--shadow);
}
header.site-nav::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-block: 14px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--fg);
  text-decoration: none;
}
.brand-mark {
  flex: none;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  color: var(--on-accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 22px -8px color-mix(in srgb, var(--accent) 70%, transparent);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 4px;
}
nav.links { display: flex; align-items: center; gap: 6px; }
nav.links a {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  padding: 0.6em 1.15em;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}
nav.links a:hover { color: var(--fg); background: var(--surface-2); }
nav.links a[aria-current="page"] {
  color: var(--fg);
  background: var(--surface-2);
  border-color: var(--border-strong);
  box-shadow: inset 0 -3px 0 var(--accent);
}
.nav-cta {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  color: var(--on-accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  padding: 0.7em 1.3em;
  border-radius: 999px;
  box-shadow: 0 10px 24px -10px color-mix(in srgb, var(--accent) 80%, transparent);
  transition: transform 0.15s;
}
.nav-cta:hover { transform: translateY(-1px); }
.cta-short { display: none; }

/* ---------- language switcher ----------
   A small button showing the current language; it opens a short list. The markup is in every page's
   header; i18n.js wires it up. */
.lang-switch { position: relative; flex: none; }
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.2;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.6em 0.95em;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}
.lang-btn:hover, .lang-btn[aria-expanded="true"] { color: var(--fg); background: var(--surface-2); }
.lang-globe { flex: none; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.lang-chev {
  flex: none;
  width: 0.5em;
  height: 0.5em;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: translateY(-0.12em) rotate(45deg);
}
.lang-btn[aria-expanded="true"] .lang-chev { transform: translateY(0.1em) rotate(225deg); }
.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  z-index: 30;
  min-width: 12rem;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  box-shadow: 0 22px 40px -18px var(--shadow);
}
.lang-opt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  text-align: left;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.3;
  color: var(--fg);
  background: transparent;
  border: 0;
  border-radius: 9px;
  padding: 0.7em 0.85em;
  cursor: pointer;
}
.lang-opt:hover { background: var(--surface-2); }
.lang-opt[aria-current="true"] { color: var(--accent); background: var(--surface-2); }
.lang-opt[aria-current="true"]::after {
  content: "";
  flex: none;
  width: 0.6em;
  height: 0.32em;
  border-left: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-0.1em) rotate(-45deg);
}

/* A page in Vietnamese or Spanish stays hidden until i18n.js has translated it, so English never flashes.
   i18n.js removes the class (and a timer does too, in case a script fails). */
html.i18n-pending .site-nav,
html.i18n-pending main,
html.i18n-pending .site-footer { visibility: hidden; }

/* Vietnamese stacks accents above and below letters, so headings need a little more room. */
html[lang="vi"] h1 { line-height: 1.22; }
html[lang="vi"] h2 { line-height: 1.32; }
html[lang="vi"] h3 { line-height: 1.42; }
html[lang="vi"] .hero h1 { line-height: 1.02; }
html[lang="vi"] .tab-title { line-height: 1.4; }
html[lang="vi"] .brand-sub, html[lang="vi"] .eyebrow, html[lang="vi"] .tag { line-height: 1.45; }

.note.english-only { margin: 1.2rem 0 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75em 1.3em;
  border-radius: 8px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary {
  color: var(--on-accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { border-color: var(--border-strong); color: var(--fg); background: var(--surface); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 1.75em; }

/* ---------- hero + page heads ---------- */
.hero { padding-block: 88px 72px; }
.hero .wrap { position: relative; }
.hero h1 {
  font-size: clamp(2.6rem, 8vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: 0 0 0.25em;
}
.hero .role {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--accent);
  margin: 0 0 1.5em;
}
.hero .lede { margin-bottom: 0; }
.page-head { padding-block: 56px 24px; }
.page-head h1 { margin-bottom: 0.35em; }
.page-head .lede { margin-bottom: 0; }
.page-head + section { padding-top: 32px; }

/* hero art: Winston's hub-and-spoke agent layout, drawn as quiet background */
.hero-art { display: none; margin: 0; pointer-events: none; }
.hero-art svg { display: block; width: 100%; height: auto; overflow: visible; }
.hero-art .ring { fill: none; stroke: var(--border-strong); stroke-dasharray: 2 7; stroke-linecap: round; }
.hero-art .link { stroke: var(--accent); stroke-opacity: 0.6; stroke-width: 1.5; }
.hero-art .link.faint { stroke: var(--accent-2); stroke-opacity: 0.3; stroke-width: 1; }
.hero-art .node { fill: var(--surface); stroke: var(--accent); stroke-width: 1.8; }
.hero-art .dot { fill: var(--accent-2); fill-opacity: 0.65; }
.hero-art .lbl { font-family: var(--font-mono); font-size: 12px; fill: var(--muted); }
.hero-art .hub-lbl { fill: var(--fg); }
.hero-art .glow-a { stop-color: var(--accent); stop-opacity: 0.5; }
.hero-art .glow-b { stop-color: var(--accent); stop-opacity: 0; }
.hero-art .fill-a { stop-color: var(--accent); }
.hero-art .fill-b { stop-color: var(--accent-2); }
.art-caption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  margin-top: 0.4em;
}
@media (min-width: 1100px) {
  .hero-art {
    display: block;
    position: absolute;
    right: 20px;
    top: 50%;
    width: 380px;
    transform: translateY(-50%);
  }
}

/* ---------- about ---------- */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 40px 56px;
  align-items: start;
}
.glance {
  margin: 0;
  padding: 8px 24px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
}
.glance > div {
  display: grid;
  grid-template-columns: 6.2rem minmax(0, 1fr);
  gap: 12px;
  padding-block: 14px;
  border-top: 1px solid var(--border);
}
.glance > div:first-child { border-top: none; }
.glance dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 0.25em;
}
.glance dd { margin: 0; }

/* ---------- cards ---------- */
.card, .feature {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px;
  border-radius: 14px;
  min-width: 0;
}
.card { background: var(--surface); border: 1px solid var(--border); }
.feature {
  border: 1px solid transparent;
  background:
    linear-gradient(var(--surface), var(--surface)) padding-box,
    linear-gradient(140deg, var(--accent), var(--accent-2) 55%, var(--border-strong)) border-box;
}
.feature.soon {
  background:
    linear-gradient(var(--surface), var(--surface)) padding-box,
    linear-gradient(140deg, var(--border-strong), var(--border)) border-box;
}
.card h3, .feature h3 { margin: 0; }
.feature h3 { font-size: 1.3rem; }
.card p, .feature p { margin: 0; color: var(--muted); font-size: 0.97rem; max-width: none; }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.card-foot { margin-top: auto; padding-top: 8px; }
.card-link { font-family: var(--font-mono); font-size: 0.85rem; text-decoration: none; }
.card-link:hover { text-decoration: underline; }
.price { font-family: var(--font-mono); color: var(--accent); font-size: 1.05rem; font-weight: 500; }
.status, .note { font-family: var(--font-mono); font-size: 0.88rem; color: var(--muted); }

/* ---------- product chips + catalog rows ---------- */
.chips { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 1.75em; }
.chips a {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--fg);
  padding: 0.5em 1.1em;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
}
.chips a:hover { border-color: var(--accent); color: var(--accent); }

.catalog { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px 28px;
  flex-wrap: wrap;
  padding: 20px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.row.soon { background: transparent; border-style: dashed; border-color: var(--border-strong); }
.row-main { flex: 1 1 340px; min-width: 0; }
.row-main h3 { margin: 0 0 0.3em; display: flex; align-items: center; gap: 0.6em; flex-wrap: wrap; }
.row-main p { margin: 0; color: var(--muted); font-size: 0.95rem; max-width: 62ch; }
.row-side { display: flex; align-items: center; gap: 16px; flex: none; }

/* ---------- clickable product cards ----------
   The product name is a real link. Its ::after stretches over the whole card
   so the card is one big target, and the Gumroad button sits above it so it
   stays a separate target. */
.feature, .row { position: relative; transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s; }
.hit { color: inherit; text-decoration: none; }
.hit::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.feature .hit::after { border-radius: 14px; }
.row .hit::after { border-radius: 12px; }
.hit:focus-visible { outline: none; }
.hit:focus-visible::after { outline: 2px solid var(--accent); outline-offset: 3px; }
.feature:hover, .row:hover { transform: translateY(-2px); box-shadow: 0 18px 34px -22px var(--shadow); }
.row:hover { border-color: var(--accent); }
.feature .btn, .row .btn { position: relative; z-index: 2; }
.feature .card-foot { display: flex; align-items: center; gap: 12px 18px; flex-wrap: wrap; }
.more { font-family: var(--font-mono); font-size: 0.85rem; color: var(--accent); white-space: nowrap; }
.feature:hover .more, .row:hover .more { text-decoration: underline; text-underline-offset: 3px; }
.tag.ok { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 55%, transparent); }
.tag.soon { border-style: dashed; }
@media (prefers-reduced-motion: reduce) {
  .feature, .row { transition: none; }
  .feature:hover, .row:hover { transform: none; }
}

/* ---------- blog: tabs, panels, rows ---------- */
.panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
}
.panel-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.panel-head h3 { margin: 0; }
.panel-head a { font-family: var(--font-mono); font-size: 0.82rem; text-decoration: none; }
.panel-head a:hover { text-decoration: underline; }

.tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 1.75em; }
.tab {
  font: inherit;
  color: var(--fg);
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 22px;
  border-radius: 14px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.tab:hover { border-color: var(--accent); }
.tab[aria-selected="true"] {
  border-color: transparent;
  background:
    linear-gradient(var(--surface-2), var(--surface-2)) padding-box,
    linear-gradient(140deg, var(--accent), var(--accent-2)) border-box;
  box-shadow: 0 14px 34px -20px color-mix(in srgb, var(--accent) 70%, transparent);
}
.tab-title { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; line-height: 1.25; }
.tab-sub { color: var(--muted); font-size: 0.92rem; }
.panel-intro { color: var(--muted); margin: 0 0 0.5em; max-width: 62ch; }

.post-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-block: 22px;
  border-top: 1px solid var(--border);
}
.post-row:first-child { border-top: none; }
.post-row .meta { font-family: var(--font-mono); font-size: 0.8rem; color: var(--muted); margin: 0; }
.post-row h3 { margin: 0; font-size: 1.25rem; }
.post-row h3 a { color: var(--fg); text-decoration: none; }
.post-row h3 a:hover { color: var(--accent); }
.post-row .summary { color: var(--muted); margin: 0; max-width: 65ch; }
.post-row.compact { padding-block: 14px; }
.post-row.compact h3 { font-size: 1.05rem; }

.empty-state {
  border: 1px dashed var(--border-strong);
  border-radius: 12px;
  padding: 32px 22px;
  text-align: center;
  color: var(--muted);
}
.empty-state .eyebrow { justify-content: center; margin-bottom: 0.6em; }
.empty-state p { margin-inline: auto; }
.empty-state p:last-child { margin-bottom: 0; }

/* ---------- article ---------- */
article.post { padding-block: 48px 64px; }
article.post .back-link { font-family: var(--font-mono); font-size: 0.85rem; text-decoration: none; }
article.post .back-link:hover { text-decoration: underline; }
article.post .meta { font-family: var(--font-mono); font-size: 0.85rem; color: var(--muted); margin: 1.5em 0 1em; }
article.post h1 { font-size: clamp(1.7rem, 4.2vw, 2.5rem); margin-bottom: 0.7em; }
.post-body h2 { font-size: 1.35rem; margin: 1.8em 0 0.5em; }
.post-body p { font-size: 1.05rem; line-height: 1.75; }
.sources { margin-top: 2.5em; padding-top: 1.5em; border-top: 1px solid var(--border); }
.sources h2 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.9em;
}
.sources ol { margin: 0; padding-left: 1.3em; display: grid; gap: 0.45em; }
.sources a { overflow-wrap: anywhere; }

/* ---------- product page ---------- */
.back-link { font-family: var(--font-mono); font-size: 0.85rem; text-decoration: none; }
.back-link:hover { text-decoration: underline; }
.product { padding-block: 44px 24px; }
.product-head { display: grid; gap: 16px; margin: 1.6rem 0 2.8rem; }
.product-head .tag-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.product-head h1 {
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0;
}
.product-head h1:focus { outline: none; }
.product-head .lede { margin: 0; }
.buy-row { display: flex; align-items: center; gap: 14px 24px; flex-wrap: wrap; margin-top: 0.4rem; }
.buy-row .price { font-size: 1.6rem; }
.buy-row .note { max-width: 52ch; line-height: 1.5; }
.was { font-family: var(--font-mono); font-size: 1.05rem; color: var(--muted); text-decoration: line-through; text-decoration-thickness: 1px; }
.buy-row .was { margin-left: -12px; }
.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; }

.product-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 40px 56px;
  align-items: start;
}
.product-body { min-width: 0; }
.product-body .intro p { font-size: 1.12rem; line-height: 1.7; max-width: 62ch; }
.product-section { margin-top: 2.2rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.product-section h2 { font-size: 1.4rem; margin: 0 0 0.7em; }
.product-section > p { line-height: 1.7; max-width: 66ch; }
.product-section > p:last-child { margin-bottom: 0; }
.product-section .after { margin: 1em 0 0; }

.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.7em; }
.ticks li { position: relative; padding-left: 1.6em; line-height: 1.6; max-width: 66ch; text-wrap: pretty; }
.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 0.62em;
  height: 0.62em;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.ticks.nots li::before { background: none; border: 1.5px solid var(--muted); }
.ticks + .ticks, .ticks + h3, .glance + .after { margin-top: 1.2em; }
.product-section > h3 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 1.6em 0 0.8em;
}

.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; gap: 14px; }
.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  line-height: 1.6;
}
.steps li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent);
}
.steps li > span { padding-top: 0.28em; max-width: 62ch; }
.glance.wide > div { grid-template-columns: 9.5rem minmax(0, 1fr); }

.product-aside { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 112px); display: grid; gap: 16px; }
.aside-card {
  display: grid;
  gap: 16px;
  padding: 22px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
}
.aside-card h2 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}
.facts { margin: 0; display: grid; }
.facts > div { display: grid; gap: 2px; padding-block: 12px; border-top: 1px solid var(--border); }
.facts > div:first-child { border-top: none; padding-top: 0; }
.facts > div:last-child { padding-bottom: 0; }
.facts dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.facts dd { margin: 0; line-height: 1.45; }
.btn-block { width: 100%; justify-content: center; }
.aside-card .note { line-height: 1.5; margin: 0; }

.related { padding-block: 56px 64px; margin-top: 56px; }
.related-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.related-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: 20px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--fg);
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}
.related-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.related-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.related-card .rc-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.related-card .rc-price { color: var(--accent); text-transform: none; font-size: 0.9rem; }
.related-card h3 { font-size: 1.1rem; margin: 0; }
.related-card p { margin: 0; color: var(--muted); font-size: 0.93rem; }
@media (prefers-reduced-motion: reduce) {
  .related-card { transition: none; }
  .related-card:hover { transform: none; }
}

/* ---------- footer ---------- */
footer.site-footer { border-top: 1px solid var(--border); padding-block: 32px; margin-top: 24px; }
footer.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
footer.site-footer p { margin: 0; color: var(--muted); font-size: 0.88rem; }
footer.site-footer nav { display: flex; gap: 20px; flex-wrap: wrap; }
footer.site-footer nav a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
footer.site-footer nav a:hover { color: var(--fg); }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  /* nav: brand and CTA on the first row; the three links and the language button on the second.
     The ::before is an invisible full-width item that forces the line break. */
  .nav-inner { flex-wrap: wrap; gap: 8px 12px; padding-block: 8px; }
  .nav-inner::before { content: ""; order: 3; flex: 0 0 100%; height: 0; }
  .brand { order: 1; flex: 1 1 0; }
  .nav-cta { order: 2; }
  nav.links { order: 4; flex: 1 1 0; min-width: 0; gap: 4px; }
  nav.links a { flex: 1 1 auto; text-align: center; padding: 0.5em 0.4em; }
  .lang-switch { order: 5; }
}
@media (min-width: 601px) and (max-width: 1000px) {
  /* tablets: the links keep their natural width, grouped on the left, with the language button at the right */
  nav.links a { flex: 0 0 auto; padding: 0.55em 1.15em; }
  nav.links { gap: 6px; }
}
@media (max-width: 860px) {
  .grid-3, .split, .about { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 560px) {
  .brand-sub { display: none; }
  .brand-name { font-size: 1.15rem; }
  .brand-mark { width: 40px; height: 40px; font-size: 1rem; }
  .nav-cta { padding: 0.6em 1.05em; }
  .cta-long { display: none; }
  .cta-short { display: inline; }
  nav.links a { font-size: 1rem; padding: 0.5em 0.3em; }
  .lang-globe { display: none; }
  .lang-btn { padding: 0.55em 0.75em; gap: 0.45em; }
  .lang-menu { min-width: 11rem; }
  section { padding-block: 44px; }
  .hero { padding-block: 52px 44px; }
  .page-head { padding-block: 40px 16px; }
  .tab { padding: 14px 16px; }
  .tab-title { font-size: 1.05rem; }
  .tab-sub { display: none; }
  .row { padding: 18px; }
  .row-side { width: 100%; justify-content: space-between; flex-wrap: wrap; gap: 8px 14px; }
  .glance { padding-inline: 18px; }
  .glance > div { grid-template-columns: 5.2rem minmax(0, 1fr); }
  .glance.wide > div { grid-template-columns: 6.6rem minmax(0, 1fr); }
  .product { padding-block: 28px 8px; }
  .product-head { margin: 1.2rem 0 2rem; }
  .buy-row .btn { width: 100%; justify-content: center; }
  .related { padding-block: 44px 48px; margin-top: 40px; }
}
@media (max-width: 315px) {
  /* folded-phone cover screens: drop the logo square so the name and the shop button both fit */
  .brand-mark { display: none; }
}
@media (max-width: 340px) {
  /* the narrowest phones: keep the brand name on one line next to a longer shop label (Spanish "Tienda") */
  .brand { gap: 10px; }
  .brand-name { font-size: 1.05rem; }
  .nav-cta { padding: 0.55em 0.85em; font-size: 0.95rem; }
}
@media (max-width: 900px) {
  .product-layout { grid-template-columns: minmax(0, 1fr); }
  .product-aside { position: static; }
}
@media (max-width: 860px) {
  .related-grid { grid-template-columns: minmax(0, 1fr); }
}