/* ==========================================================================
   dsh-automation-suite — rebuilt on the Pixa landing language
   (floating glass header, dot-grid hero, glow, serif accent, cards, dark mode)
   ========================================================================== */

:root {
  --bg: #fcfcfc;
  --panel: #ffffff;
  --ink: #0a0a0a;
  --ink-2: #3f3f46;
  --muted: #71717a;
  --line: #e5e7eb;
  --line-2: #d4d4d8;
  --header-bg: #ffffffd9;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px -12px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.05), 0 30px 60px -30px rgba(0, 0, 0, 0.28);
  --accent: #7c3aed;
  --accent-2: #22d3ee;
  --ok: #15803d;
  --partial: #b45309;
  --proto: #64748b;
  --radius: 14px;
  --maxw: 1080px;
  --pad: clamp(18px, 4vw, 40px);
  --sans: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --serif: "Poly", Georgia, "Times New Roman", "Songti SC", "Noto Serif SC", serif;
  --mono: "Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

html.dark {
  --bg: #070708;
  --panel: #111113;
  --ink: #f4f4f5;
  --ink-2: #d4d4d8;
  --muted: #a1a1aa;
  --line: #232327;
  --line-2: #3f3f46;
  --header-bg: #17181bd9;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5), 0 8px 30px -12px rgba(0, 0, 0, 0.7);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.6), 0 30px 60px -30px rgba(0, 0, 0, 0.9);
  --ok: #4ade80;
  --partial: #fbbf24;
  --proto: #94a3b8;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 110px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease);
}

h1, h2, h3, p, ul, ol, pre, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
svg { display: block; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: #ddd6fe; color: #1e1b4b; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }
.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--ink); color: var(--bg); padding: 10px 16px;
}
.skip:focus { left: 12px; top: 12px; }

/* ---------- header ---------- */
.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 18px;
  width: min(1040px, calc(100vw - 32px));
  height: 60px;
  padding: 0 18px;
  border-radius: 10px;
  background: var(--header-bg);
  border: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  box-shadow: 0 10px 30px -18px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
}
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; letter-spacing: -0.02em; white-space: nowrap; }
.brand svg { width: 20px; height: 20px; }
.brand span { font-size: 14.5px; }

.nav { display: flex; align-items: center; gap: 4px; margin-left: 8px; }
.nav a {
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--muted);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav a:hover { color: var(--ink); background: color-mix(in srgb, var(--ink) 6%, transparent); }
.nav a[aria-current="page"] { color: var(--ink); background: color-mix(in srgb, var(--ink) 8%, transparent); }

.header-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.icon-btn {
  display: inline-grid; place-items: center;
  width: 34px; height: 34px;
  border-radius: 9px;
  color: var(--ink-2);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.icon-btn:hover { background: color-mix(in srgb, var(--ink) 7%, transparent); color: var(--ink); }
.icon-btn svg { width: 17px; height: 17px; }

.lang { display: inline-flex; border: 1px solid var(--line-2); border-radius: 8px; overflow: hidden; }
.lang__btn {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.04em;
  padding: 6px 9px; color: var(--muted);
  transition: background 0.18s var(--ease), color 0.18s var(--ease);
}
.lang__btn + .lang__btn { border-left: 1px solid var(--line-2); }
.lang__btn.is-on { background: var(--ink); color: var(--bg); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px;
  border-radius: 11px;
  background: var(--ink);
  color: var(--bg);
  border: 1px solid var(--ink);
  font-size: 14px;
  font-weight: 500;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease), background 0.2s var(--ease);
}
.btn:hover { transform: translateY(-1px); opacity: 0.92; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn--ghost:hover { background: color-mix(in srgb, var(--ink) 5%, transparent); }
.btn--sm { padding: 8px 14px; font-size: 13px; border-radius: 9px; }
.btn .arrow { transition: transform 0.2s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

.nav-toggle { display: none; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(120px, 16vh, 170px);
  padding-bottom: clamp(48px, 7vw, 80px);
  background-image: radial-gradient(circle at 1px 1px, color-mix(in srgb, var(--ink) 14%, transparent) 1px, transparent 0);
  background-size: 22px 22px;
  background-position: center top;
  mask-image: linear-gradient(to bottom, #000 0%, #000 62%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 62%, transparent 100%);
}
.hero__inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted);
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel) 70%, transparent);
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

.hero h1 {
  margin-top: 26px;
  font-size: clamp(40px, 7.4vw, 86px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-weight: 600;
  text-transform: uppercase;
  text-wrap: balance;
}
.hero h1 .serif {
  display: block;
  font-family: var(--serif);
  font-weight: 300;
  text-transform: none;
  letter-spacing: -0.015em;
  font-size: 0.94em;
  color: var(--ink-2);
}
.hero .lead {
  margin-top: 24px;
  max-width: 540px;
  font-size: clamp(16px, 1.5vw, 18px);
  color: var(--ink-2);
  text-wrap: pretty;
}
.hero .actions { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* glow blobs */
.glow { position: absolute; border-radius: 50%; filter: blur(70px); opacity: 0.5; pointer-events: none; z-index: 0; }
.glow--a { width: 420px; height: 320px; top: 4%; left: 50%; transform: translateX(-50%); background: linear-gradient(90deg, #7c3aed99, #625aaf88, #38bdf877); }
.glow--b { width: 300px; height: 220px; top: 34%; left: 62%; background: linear-gradient(90deg, #22d3ee66, #7c3aed55); }

/* ---------- product window ---------- */
.shot { position: relative; margin-top: 56px; width: min(960px, 100%); }
.shot::before {
  content: "";
  position: absolute; inset: -2px;
  border-radius: calc(var(--radius) + 6px);
  background: linear-gradient(120deg, #7c3aed, #38bdf8, #f0abfc, #7c3aed);
  opacity: 0.35;
  filter: blur(10px);
  z-index: 0;
}
.window {
  position: relative;
  z-index: 1;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.window__bar {
  display: flex; align-items: center; gap: 6px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--ink) 3%, var(--panel));
}
.w-dot { width: 8px; height: 8px; border-radius: 50%; background: color-mix(in srgb, var(--ink) 18%, transparent); }
.window__title { margin-left: 8px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.window__body { padding: 22px; display: grid; gap: 12px; }
.line { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 14.5px; color: var(--ink-2); }
.line__prompt { color: var(--accent); }
.line__meta { margin-left: auto; font-family: var(--mono); font-size: 11px; color: var(--muted); }
.line--ok { color: var(--ok); font-size: 13px; }
.chip {
  font-family: var(--mono); font-size: 11px;
  background: color-mix(in srgb, var(--ink) 5%, var(--panel));
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 2px 7px;
  color: var(--ink);
}
.window__foot {
  display: flex; align-items: center; justify-content: space-between;
  padding: 11px 14px;
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--ink) 3%, var(--panel));
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted);
}
.led { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 20%, transparent); }

/* ---------- page head (inner pages) ---------- */
.page-head {
  padding-top: clamp(110px, 14vh, 150px);
  padding-bottom: clamp(32px, 5vw, 56px);
  text-align: center;
  background-image: radial-gradient(circle at 1px 1px, color-mix(in srgb, var(--ink) 12%, transparent) 1px, transparent 0);
  background-size: 22px 22px;
  mask-image: linear-gradient(to bottom, #000 0%, #000 70%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 70%, transparent 100%);
}
.page-head h1 {
  margin-top: 20px;
  font-size: clamp(32px, 4.6vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 600;
  text-wrap: balance;
}
.page-head h1 .serif { display: block; font-family: var(--serif); font-weight: 300; letter-spacing: -0.01em; color: var(--ink-2); }
.page-head .lead { margin: 20px auto 0; max-width: 620px; color: var(--ink-2); font-size: clamp(15.5px, 1.4vw, 17px); }

/* ---------- sections ---------- */
.section { padding-block: clamp(56px, 8vw, 96px); }
.section--tight { padding-block: clamp(40px, 5vw, 64px); }
.section-head { display: grid; gap: 10px; margin-bottom: 34px; }
.section-head .kicker { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.section-head h2 {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.section-head h2 .serif { font-family: var(--serif); font-weight: 300; letter-spacing: 0; }
.section-head p { max-width: 62ch; color: var(--muted); font-size: 15px; }

.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.cards--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cards--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
  display: flex; flex-direction: column;
  padding: 26px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--line-2); }
.card__icon {
  display: inline-grid; place-items: center;
  width: 38px; height: 38px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--ink) 5%, var(--panel));
  color: var(--ink);
  margin-bottom: 18px;
}
.card__icon svg { width: 19px; height: 19px; }
.card h3 { font-size: 18px; font-weight: 600; letter-spacing: -0.015em; }
.card p { margin-top: 8px; font-size: 14.5px; color: var(--muted); line-height: 1.6; }
.card .status { margin-top: auto; padding-top: 18px; }
.card .num { font-family: var(--mono); font-size: 11px; color: var(--muted); letter-spacing: 0.12em; margin-bottom: 12px; }

/* status */
.status { display: inline-flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.09em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.status--ok { color: var(--ok); }
.status--partial { color: var(--partial); }
.status--proto { color: var(--proto); }

/* ---------- table ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--line); background: var(--panel); }
.table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.table th {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--mono); font-size: 10px; font-weight: 400; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.table td { padding: 14px 16px; border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent); vertical-align: top; }
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover { background: color-mix(in srgb, var(--ink) 3%, transparent); }
.table td:first-child { font-family: var(--mono); font-size: 12.5px; }
.table td:first-child code { font-family: inherit; font-size: inherit; }
.table .num { text-align: right; font-family: var(--mono); font-size: 12.5px; color: var(--muted); white-space: nowrap; }
.table td .status { padding-top: 0; }
code { font-family: var(--mono); font-size: 0.9em; }

/* ---------- kv ---------- */
.kv { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); overflow: hidden; }
.kv > div { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 20px; padding: 15px 20px; border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent); }
.kv > div:last-child { border-bottom: 0; }
.kv dt { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.11em; text-transform: uppercase; color: var(--muted); padding-top: 2px; }
.kv dd { font-size: 14.5px; color: var(--ink-2); text-wrap: pretty; }

/* ---------- steps ---------- */
.steps { display: grid; gap: 14px; }
.steps li {
  display: grid; grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.steps__n { font-family: var(--mono); font-size: 11px; color: var(--muted); letter-spacing: 0.1em; padding-top: 3px; }
.steps h3 { font-size: 16px; font-weight: 600; letter-spacing: -0.01em; }
.steps p { margin-top: 5px; font-size: 14.5px; color: var(--muted); }

/* ---------- terminal ---------- */
.term {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #0b0b0d;
  color: #e4e4e7;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.term__bar { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-bottom: 1px solid #1f1f23; background: #101013; }
.term__bar .mono { font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: #8b8b93; }
.copy { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: #8b8b93; padding: 4px 8px; border-radius: 6px; border: 1px solid transparent; transition: color 0.2s, border-color 0.2s; }
.copy:hover { color: #fff; border-color: #2a2a30; }
.copy.is-done { color: #4ade80; }
.term__body { padding: 20px 18px 22px; overflow-x: auto; font-family: var(--mono); font-size: 13px; line-height: 1.9; color: #d4d4d8; }
.c-prompt { color: #a78bfa; user-select: none; }

/* Light theme: the terminal is a white code box; dark keeps the black one. */
html:not(.dark) .term {
  background: var(--panel);
  color: var(--ink-2);
  border-color: var(--line);
  box-shadow: var(--shadow-sm);
}
html:not(.dark) .term__bar {
  background: color-mix(in srgb, var(--ink) 3%, var(--panel));
  border-bottom-color: var(--line);
}
html:not(.dark) .term__bar .mono { color: var(--muted); }
html:not(.dark) .term__body { color: var(--ink-2); }
html:not(.dark) .c-prompt { color: var(--accent); }
html:not(.dark) .copy { color: var(--muted); }
html:not(.dark) .copy:hover { color: var(--ink); border-color: var(--line-2); }
html:not(.dark) .copy.is-done { color: var(--ok); }

/* ---------- prose / callouts ---------- */
.prose { max-width: 68ch; color: var(--ink-2); font-size: 16px; }
.prose p + p { margin-top: 14px; }
.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 24px 26px;
  box-shadow: var(--shadow-sm);
}
.panel .termline { margin-top: 12px; font-family: var(--mono); font-size: 12px; color: var(--muted); }

/* ---------- cta band ---------- */
.cta-band {
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 20px;
  align-items: center;
  padding: 30px 32px;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  background: linear-gradient(120deg, color-mix(in srgb, var(--accent) 8%, var(--panel)), color-mix(in srgb, var(--accent-2) 8%, var(--panel)));
}
.cta-band h2 { font-size: clamp(22px, 2.4vw, 28px); font-weight: 600; letter-spacing: -0.02em; }
.cta-band p { margin-top: 6px; color: var(--muted); font-size: 14.5px; }
.cta-band .actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }

.linkrow { margin-top: 18px; display: flex; align-items: center; gap: 8px; }
.link { font-size: 14px; border-bottom: 1px solid var(--line-2); padding-bottom: 2px; transition: color 0.2s, border-color 0.2s; }
.link:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); padding-block: 36px 44px; margin-top: clamp(48px, 7vw, 80px); }
.foot__in { display: flex; flex-wrap: wrap; gap: 20px 40px; justify-content: space-between; align-items: flex-start; }
.foot__disc { max-width: 58ch; font-size: 12.5px; line-height: 1.65; color: var(--muted); }
.foot__meta { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; font-size: 12.5px; color: var(--muted); }
.foot__meta .link { font-size: 12.5px; color: var(--muted); }
.foot__meta .link:hover { color: var(--ink); }
.foot__meta .mono { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; }

/* ---------- CJK ---------- */
html[lang="zh-CN"] body { line-height: 1.8; }
html[lang="zh-CN"] .hero h1 { text-transform: none; font-weight: 600; letter-spacing: 0; }
html[lang="zh-CN"] .hero h1 .serif { font-family: var(--sans); font-weight: 600; }
html[lang="zh-CN"] .section-head h2 { letter-spacing: 0; }
html[lang="zh-CN"] .page-head h1 { letter-spacing: 0; }

/* ---------- motion ---------- */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- architecture page ---------- */
.assembly {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-sm);
  font-family: var(--mono);
  font-size: 11px;
}
.assembly__node {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--line-2);
  border-radius: 8px;
  background: color-mix(in srgb, var(--ink) 3%, var(--panel));
  color: var(--ink-2);
}
.assembly__node--accent {
  border-color: color-mix(in srgb, var(--accent) 42%, var(--line));
  background: color-mix(in srgb, var(--accent) 7%, var(--panel));
  color: var(--ink);
}
.assembly__node b { color: var(--ink); font-weight: 600; }
.assembly__arrow { color: var(--muted); }
.assembly__note {
  margin-left: auto;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.legend {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 10.5px;
  line-height: 1.9;
  color: var(--muted);
}
.legend code { color: var(--ink-2); }

.table--components td { font-size: 13.5px; }
.table--components td:first-child { min-width: 235px; }
.table--components th:last-child,
.table--components td:last-child { text-align: right; }
.table--components tr.table-group td { text-align: left; }
.table .work-alone { color: var(--muted); font-size: 12px; }
.table .work-optional { font-style: normal; color: var(--muted); font-size: 11px; }
.table .version { font-family: var(--mono); font-size: 11px; color: var(--muted); white-space: nowrap; }
.table tbody tr.table-group:hover { background: transparent; }
.table tbody tr.table-group td {
  padding: 9px 16px;
  background: color-mix(in srgb, var(--ink) 4%, var(--panel));
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.callout { border-left: 3px solid color-mix(in srgb, var(--accent) 70%, var(--line)); }

.codepanel {
  margin-top: 16px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-sm);
  overflow-x: auto;
}
.codepanel pre { margin: 0; font-family: var(--mono); font-size: 12.5px; line-height: 1.9; color: var(--ink-2); }
.codepanel .c { color: var(--muted); }

.table--matrix th:nth-child(n + 2),
.table--matrix td:nth-child(n + 2) { text-align: center; }
.table--matrix td:first-child { font-family: var(--sans); font-size: 14px; }
.table--matrix .yes { color: var(--ok); font-size: 16px; line-height: 1; }
.table--matrix .no { color: var(--line-2); }
.table--matrix .celltext { font-family: var(--mono); font-size: 11px; color: var(--muted); }

/* ---------- desktop installer walkthrough ---------- */
.walk { display: grid; gap: 18px; }
.walk__step {
  padding: 22px 24px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.walk__head { display: flex; align-items: baseline; gap: 14px; }
.walk__n { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--muted); }
.walk__head h3 { font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }
.walk__desc { margin-top: 7px; max-width: 74ch; font-size: 14.5px; color: var(--muted); text-wrap: pretty; }
.walk__desc a { color: var(--ink-2); border-bottom: 1px solid var(--line-2); }
.walk__desc a:hover { color: var(--ink); border-bottom-color: var(--ink); }
.walk__fig { margin-top: 18px; max-width: 720px; }
.walk__fig--wide { max-width: 100%; }
.walk__shot {
  display: block;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--panel);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
}
.walk__shot:hover { box-shadow: var(--shadow-md); border-color: var(--line-2); }
.walk__shot img, .walk__gallery img { display: block; width: 100%; height: auto; }
.walk__fig figcaption, .walk__gallery figcaption { margin-top: 8px; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.03em; color: var(--muted); }
.walk__gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 14px; }
.walk__gallery figure { margin: 0; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .site-header { gap: 8px; padding: 0 12px; }
  .nav {
    position: absolute; top: 66px; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    padding: 10px;
    background: var(--header-bg);
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    opacity: 0; pointer-events: none; transform: translateY(-6px);
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
  }
  .site-header[data-open="true"] .nav { opacity: 1; pointer-events: auto; transform: none; }
  .nav a { padding: 12px 14px; }
  .nav-toggle { display: inline-grid; }
  .header-actions .btn--sm { display: none; }
  .cards, .cards--2, .cards--4 { grid-template-columns: 1fr; }
  .cta-band { grid-template-columns: 1fr; }
  .cta-band .actions { justify-content: flex-start; }
  .kv > div { grid-template-columns: 1fr; gap: 4px; }
  .assembly__note { margin-left: 0; }
}

@media (max-width: 760px) {
  .walk__gallery { grid-template-columns: 1fr; }
  .table--components thead { display: none; }
  .table--components,
  .table--components tbody,
  .table--components tr,
  .table--components td { display: block; width: 100%; }
  .table--components tr.table-group { margin-top: 8px; }
  .table--components tr.table-group td { display: block; }
  .table--components tr:not(.table-group) { padding: 12px 14px; border-bottom: 1px solid var(--line); }
  .table--components tr:not(.table-group):hover { background: transparent; }
  .table--components tr:not(.table-group) td { border: 0; padding: 3px 0; font-size: 13px; }
  .table--components tr:not(.table-group) td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 2px;
    font-family: var(--mono);
    font-size: 8px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
  }
  .table--components td:first-child { min-width: 0; }
  .table--components td.num { text-align: left; }
  .table--components td:last-child { text-align: left; }

  .table--matrix thead { display: none; }
  .table--matrix,
  .table--matrix tbody,
  .table--matrix tr,
  .table--matrix td { display: block; width: 100%; }
  .table--matrix tr { padding: 12px 14px; border-bottom: 1px solid var(--line); }
  .table--matrix tr:last-child { border-bottom: 0; }
  .table--matrix td { border: 0; padding: 3px 0; }
  .table--matrix td:first-child { font-family: var(--sans); font-size: 13px; }
  .table--matrix td:not(:first-child) { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
  .table--matrix td:not(:first-child)::before {
    content: attr(data-label);
    font-family: var(--mono);
    font-size: 8px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
  }
  .table--matrix .yes { font-size: 14px; }
}

@media (max-width: 560px) {
  .walk__step { padding: 18px 16px 20px; }
  .brand span { display: none; }
  .hero h1 { font-size: clamp(34px, 9vw, 46px); }
  .hero .lead { font-size: 15.5px; }
  .hero .actions .btn { flex: 1 1 auto; justify-content: center; }
  .window__body { padding: 16px; }
  .term__body { font-size: 12px; }
  .foot__in { flex-direction: column; }
}