/* ============================================================================
   rvhelp.org - design system
   Dark-first, warm-accent, glassy surfaces. Light theme via [data-theme=light].
   ========================================================================== */

:root {
  /* Service-manual palette: warm paper, ink, signal amber. Dark theme is opt-in. */
  --bg:        #f3f1ec;
  --bg-2:      #eae7df;
  --surface:   #fffefa;
  --surface-2: #f8f6f0;
  --surface-3: #ece9e1;
  --line:      #d8d3c8;
  --line-soft: #e7e3da;
  --text:      #202927;
  --text-2:    #525d58;
  --text-3:    #737b75;
  --accent:    #b76524;
  --accent-2:  #ca762d;
  --accent-ink:#fffaf4;
  --blue:      #316479;
  --green:     #3c705b;
  --red:       #a94439;
  --amber:     #a85e1b;
  --purple:    #665677;
  --teal:      #286a69;

  --radius:    5px;
  --radius-sm: 3px;
  --radius-lg: 7px;
  --shadow-1:  0 1px 2px rgba(32,41,39,.08);
  --shadow-2:  0 4px 14px rgba(32,41,39,.08);
  --shadow-3:  0 12px 38px rgba(32,41,39,.16);
  --ring:      0 0 0 3px rgba(183,101,36,.23);

  --maxw: 1180px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
}

[data-theme="dark"] {
  --bg:        #f4f6fa;
  --bg-2:      #eef1f7;
  --surface:   #ffffff;
  --surface-2: #f6f8fc;
  --surface-3: #eef2f9;
  --line:      #dde4ee;
  --line-soft: #e8edf5;
  --text:      #101722;
  --text-2:    #46566b;
  --text-3:    #7b8a9e;
  --accent:    #c9770a;
  --accent-2:  #e28f17;
  --accent-ink:#ffffff;
  --blue:      #1f7ae0;
  --green:     #159a5b;
  --red:       #d63b3b;
  --amber:     #b97e12;
  --purple:    #6f4fd0;
  --teal:      #0f9c9c;
  --shadow-2:  0 10px 30px -14px rgba(20,40,70,.28);
  --shadow-3:  0 24px 60px -24px rgba(20,40,70,.35);
  --ring:      0 0 0 3px rgba(201,119,10,.28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
h1,h2,h3,h4 { line-height: 1.2; margin: 0 0 .4em; letter-spacing: -.01em; }
h1 { font-size: clamp(1.65rem, 3.1vw, 2.45rem); font-weight: 720; }
h2 { font-size: clamp(1.2rem, 2.2vw, 1.55rem); font-weight: 680; }
h3 { font-size: 1.1rem; font-weight: 700; }
p { margin: 0 0 1em; }

.skip-link {
  position: fixed; left: 12px; top: -60px; z-index: 100;
  background: var(--accent); color: var(--accent-ink); padding: 10px 16px;
  border-radius: 10px; font-weight: 700; transition: top .2s;
}
.skip-link:focus { top: 12px; }

/* ---------------------------------------------------------------- topbar */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 18px;
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 800; font-size: 1.15rem; }
.brand-mark { display: grid; place-items: center; }
.brand-mark svg { background: var(--accent); border-radius: 3px; }
.brand-text b { color: var(--text); }
.brand-text span { color: var(--accent); }
.nav { display: flex; gap: 4px; margin-left: 6px; }
.nav a {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 14px; border-radius: 2px; font-weight: 600; font-size: .89rem;
  color: var(--text-2); transition: background .15s, color .15s;
}
.nav a:hover { background: var(--surface-2); color: var(--text); }
.nav a.active { background: var(--surface-3); color: var(--text); box-shadow: inset 0 0 0 1px var(--line); }
.nav a[data-route="shop"] { color:var(--accent); }
.nav-ico { font-size: .95rem; color: var(--accent); }
.topbar-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.search-trigger {
  display: inline-flex; align-items: center; gap: 9px;
  background: var(--surface-2); border: 1px solid var(--line);
  padding: 9px 12px; border-radius: 11px; color: var(--text-3); font-size: .9rem;
  transition: border-color .15s, color .15s, background .15s;
}
.search-trigger:hover { border-color: var(--accent); color: var(--text-2); }
.search-trigger kbd {
  font-family: var(--mono); font-size: .72rem; padding: 2px 6px; border-radius: 6px;
  background: var(--surface-3); border: 1px solid var(--line); color: var(--text-3);
}
.theme-toggle {
  position: relative; width: 42px; height: 42px; border-radius: 11px;
  background: var(--surface-2); border: 1px solid var(--line); overflow: hidden;
}
.theme-toggle span { position: absolute; inset: 0; display: grid; place-items: center; transition: transform .35s, opacity .35s; }
[data-theme="dark"] .t-sun { transform: translateY(0) rotate(0); opacity: 1; }
[data-theme="dark"] .t-moon { transform: translateY(130%); opacity: 0; }
[data-theme="light"] .t-moon { transform: translateY(0); opacity: 1; }
[data-theme="light"] .t-sun { transform: translateY(-130%); opacity: 0; }

/* ---------------------------------------------------------------- app shell */
.app { max-width: var(--maxw); margin: 0 auto; padding: 30px 20px 90px; outline: none; }
.foot { border-top: 1px solid var(--line-soft); margin-top: 40px; }
.foot-inner { max-width: var(--maxw); margin: 0 auto; padding: 26px 20px 60px; color: var(--text-3); font-size: .86rem; }
.foot-fine { color: var(--text-3); opacity: .8; max-width: 70ch; }

/* ---------------------------------------------------------------- hero */
.hero {
  position: relative; overflow: hidden;
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  border-top: 4px solid var(--accent);
  background: var(--surface);
  padding: clamp(25px, 4vw, 44px);
  box-shadow: var(--shadow-2);
}
.service-hero { display:grid; grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr); gap:clamp(28px,5vw,70px); align-items:center; box-shadow:none; }
.service-hero-copy { max-width:680px; }
.service-hero h1 { max-width:16ch; font-size:clamp(2.05rem,3.5vw,3.15rem); letter-spacing:-.025em; }
.sample-ticket { background:#fffefa; color:#24302c; border:1px solid #c9c1b3; box-shadow:5px 6px 0 #ded8cc; padding:18px 20px; transform:rotate(1deg); font-size:.82rem; }
.ticket-top,.ticket-foot { display:flex; align-items:center; justify-content:space-between; color:#737b75; font:700 .66rem var(--mono); letter-spacing:.07em; }
.ticket-unit,.ticket-prompt { display:grid; gap:3px; margin:18px 0; }
.ticket-unit span,.ticket-prompt span,.ticket-fields span { color:#737b75; font:700 .62rem var(--mono); letter-spacing:.08em; }
.ticket-unit b { font:700 1.16rem var(--font); }
.ticket-prompt b { font:700 1.18rem/1.25 var(--font); max-width:24ch; }
.ticket-rule { border-top:1px dashed #c9c1b3; }
.ticket-fields { display:grid; grid-template-columns:1fr 1fr; gap:12px; margin:16px 0; }
.ticket-fields div { display:grid; gap:4px; }
.ticket-fields b { font-size:.8rem; }
.ticket-note { padding:10px 11px; background:#f1eee6; border-left:3px solid #b76524; color:#525d58; font-size:.78rem; }
.ticket-foot { padding-top:14px; margin-top:16px; border-top:1px solid #ded8cc; }
@media(max-width:760px){.service-hero{grid-template-columns:1fr}.sample-ticket{max-width:440px;transform:none}}

/* Service-bay presentation: quieter controls, editorial hierarchy, less card chrome. */
.service-hero { border-radius:4px; }
.hero-stats { gap:0; border-top:1px solid var(--line); }
.hero-stat { min-width:130px; padding:0 22px; border-right:1px solid var(--line); }
.hero-stat:first-child { padding-left:0; }
.hero-stat:last-child { border-right:0; }
.section-head { margin-top:38px; padding-bottom:11px; border-bottom:1px solid var(--line); }
.section-head h2 { font-size:1.18rem; font-weight:680; }
.system-title { padding-bottom:9px; border-bottom:1px solid var(--line); color:var(--text); letter-spacing:.04em; }
.tile-diagnose { border-radius:4px; box-shadow:none; }
.tile-diagnose .glyph { border-radius:2px; }
.tile-diagnose .go { color:var(--text-2); font-weight:600; }
.tile-diagnose:hover .go { color:var(--accent); }
.card { border-radius:4px; box-shadow:none; }
.card:hover { transform:none; }
.process-row { border-radius:0; }
.sample-ticket { transform:none; box-shadow:4px 4px 0 #ded8cc; }
.shop-status { border-radius:2px; }
.shop-pilot-ask { border-radius:2px; }
@media(max-width:640px){.hero-stats{gap:0}.hero-stat{min-width:0;padding:0 12px}.hero-stat b{font-size:1.2rem}.service-hero h1{font-size:2rem}}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 9px; font-weight: 700; font-size: .82rem;
  letter-spacing: .035em; text-transform: uppercase; color: var(--accent);
  background: transparent;
  border: 0; border-bottom: 1px solid var(--line); padding: 0 0 7px; border-radius: 0; margin-bottom: 18px;
}
.hero h1 { max-width: 18ch; font-weight:720; }
.hero p.lede { font-size: clamp(1rem, 1.6vw, 1.22rem); color: var(--text-2); max-width: 62ch; margin-bottom: 26px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 26px; margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--line-soft); }
.hero-stat b { display: block; font-size: 1.45rem; font-weight: 700; color: var(--text); }
.hero-stat span { font-size: .82rem; color: var(--text-3); text-transform: uppercase; letter-spacing: .05em; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 17px; border-radius: 3px; font-weight: 700; font-size: .91rem;
  border: 1px solid transparent; transition: transform .12s, box-shadow .2s, background .15s, border-color .15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); box-shadow: none; }
.btn-primary:hover { background: var(--accent-2); box-shadow: none; }
.btn-ghost { background: var(--surface-2); border-color: var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); }
.btn-sm { padding: 9px 14px; border-radius: 10px; font-size: .88rem; }

.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin: 46px 0 18px; }
.section-head h2 { margin: 0; }
.section-head .link { color: var(--accent); font-weight: 650; font-size: .92rem; }
.section-head .link:hover { text-decoration: underline; }

.bench-note { display:flex; align-items:center; gap:18px; margin:34px 0 6px; padding:13px 15px; background:var(--surface-2); border:1px solid var(--line); border-left:3px solid var(--accent); }
.bench-index { flex:none; color:var(--accent); font:700 .72rem var(--mono); letter-spacing:.06em; }
.bench-copy { flex:1; color:var(--text-2); font-size:.9rem; }
.bench-note a { flex:none; font-weight:700; font-size:.86rem; }
.shop-process { display:grid; border-top:1px solid var(--line); }
.process-row { display:flex; align-items:flex-start; gap:18px; padding:17px 15px; border-bottom:1px solid var(--line); color:var(--text); background:var(--surface); }
.process-row:hover { background:var(--surface-2); }
.process-no { flex:none; color:var(--accent); font:700 .8rem var(--mono); padding-top:2px; }
.process-main { flex:1; display:grid; grid-template-columns:minmax(170px,.7fr) 1.3fr; gap:18px; }
.process-main b { font-size:.96rem; }
.process-main span { color:var(--text-2); font-size:.9rem; }
.process-arrow { color:var(--text-3); }
.shop-page { max-width:900px; margin:0 auto; }
.shop-kicker { color:var(--accent); font:700 .76rem var(--mono); letter-spacing:.09em; }
.shop-page h1 { margin:13px 0 16px; max-width:24ch; }
.shop-lede { max-width:70ch; font-size:1.12rem; color:var(--text-2); }
.shop-status { display:grid; gap:4px; margin:23px 0 37px; padding:14px 16px; background:#eee9df; border:1px solid var(--line); border-left:3px solid var(--amber); }
.shop-status span { color:var(--text-2); font-size:.89rem; }
.shop-section-title { margin:37px 0 13px; font-size:1.06rem; text-transform:uppercase; letter-spacing:.045em; }
.shop-process-page .process-row { padding:20px 16px; }
.shop-guardrails { display:grid; grid-template-columns:repeat(2,1fr); gap:0 25px; border-top:1px solid var(--line); }
.shop-guardrails p { padding:13px 0; border-bottom:1px solid var(--line); color:var(--text-2); margin:0; }
.shop-guardrails p::before { content:"— "; color:var(--accent); }
.shop-pilot-ask { display:flex; align-items:center; gap:30px; margin-top:38px; padding:24px; background:var(--surface); border:1px solid var(--line); border-top:3px solid var(--accent); }
.shop-pilot-ask h2 { margin:8px 0; }
.shop-pilot-ask p { max-width:62ch; color:var(--text-2); margin:0; }
.shop-pilot-ask .btn { flex:none; }
.shop-footnote { margin-top:9px; color:var(--text-3); font-size:.78rem; }
.training-strip { display:flex; justify-content:space-between; align-items:center; gap:20px; margin:27px 0 5px; padding:16px 15px; border:1px solid var(--line); background:var(--surface); }
.training-strip div { display:grid; gap:3px; }
.training-strip b { font-size:.94rem; }
.training-strip div span:last-child { color:var(--text-2); font-size:.84rem; }
.video-practice { margin-top:32px; border-top:1px solid var(--line); }
.video-row { display:grid; grid-template-columns:70px 1fr; gap:18px; padding:24px 12px; border-bottom:1px solid var(--line); background:var(--surface); }
.video-index { color:var(--accent); font:700 1rem var(--mono); }
.video-info h2 { margin:6px 0; font-size:1.25rem; }
.video-info p { max-width:72ch; color:var(--text-2); }
.video-owner,.planned-label { color:var(--text-3); font:700 .69rem var(--mono); letter-spacing:.07em; text-transform:uppercase; }
.planned-label { display:inline-block; padding:5px 8px; border:1px solid var(--line); }
.video-info .btn { margin-top:3px; }
@media(max-width:650px){.bench-note{align-items:flex-start;flex-wrap:wrap}.bench-copy{flex-basis:75%}.process-main{grid-template-columns:1fr;gap:4px}.shop-guardrails{grid-template-columns:1fr}.shop-pilot-ask{align-items:flex-start;flex-direction:column}}
@media(max-width:650px){.training-strip{align-items:flex-start;flex-direction:column}.video-row{grid-template-columns:40px 1fr;gap:10px}}

/* ---------------------------------------------------------------- cards */
.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative; display: block;
  background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; transition: transform .14s, border-color .14s, box-shadow .2s;
}
.card:hover { border-color: var(--accent); box-shadow: var(--shadow-2); }
.card-kicker { font-size: .74rem; text-transform: uppercase; letter-spacing: .07em; color: var(--text-3); font-weight: 700; }
.card h3 { margin: 8px 0 6px; font-size: 1.04rem; }
.card p { color: var(--text-2); font-size: .9rem; margin: 0; }
.card .glyph { font-size: 1.5rem; line-height: 1; margin-bottom: 6px; display: block; }

.tile-diagnose {
  display: flex; flex-direction: column; gap: 8px; min-height: 132px; justify-content: space-between;
  box-shadow:none;
}
.tile-diagnose .glyph {
  width: 38px; height: 38px; border-radius: 3px; display: grid; place-items: center;
  font:700 .72rem var(--mono); background: var(--surface-3);
  border: 1px solid var(--line); color: var(--accent);
}
.tile-diagnose h3 { margin: 0; }
.tile-diagnose .go { color: var(--accent); font-weight: 700; font-size: .86rem; display: inline-flex; align-items: center; gap: 7px; }
.tile-diagnose:hover .go { gap: 11px; }

/* ---------------------------------------------------------------- topic list */
.system-block { margin-bottom: 34px; }
.system-title { display: flex; align-items: center; gap: 12px; margin: 0 0 14px; font-size: .8rem; letter-spacing: .09em; text-transform: uppercase; color: var(--text-3); font-weight: 700; }
.system-title .dot { width: 9px; height: 9px; border-radius: 3px; }
.topic-card { display: flex; flex-direction: column; gap: 9px; min-height: 118px; }
.topic-card .bar { width: 34px; height: 4px; border-radius: 3px; }
.topic-card h3 { margin: 0; font-size: 1rem; }
.topic-card .meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: auto; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; font-size: .72rem; font-weight: 650;
  padding: 3px 9px; border-radius: 999px; background: var(--surface-3); border: 1px solid var(--line); color: var(--text-2);
}
.chip.lib { background: color-mix(in srgb, var(--purple) 16%, transparent); border-color: color-mix(in srgb, var(--purple) 34%, transparent); color: var(--purple); }
.chip.code { background: color-mix(in srgb, var(--blue) 14%, transparent); border-color: color-mix(in srgb, var(--blue) 30%, transparent); color: var(--blue); }
.chip.tree { background: color-mix(in srgb, var(--green) 14%, transparent); border-color: color-mix(in srgb, var(--green) 30%, transparent); color: var(--green); }

/* ---------------------------------------------------------------- breadcrumbs */
.crumbs { display: flex; align-items: center; gap: 8px; color: var(--text-3); font-size: .86rem; margin-bottom: 18px; flex-wrap: wrap; }
.crumbs a:hover { color: var(--accent); }
.crumbs .sep { opacity: .5; }
.crumbs .here { color: var(--text); font-weight: 650; }

/* ---------------------------------------------------------------- topic reader */
.reader { display: grid; grid-template-columns: minmax(0,1fr) 280px; gap: 40px; align-items: start; }
@media (max-width: 940px) { .reader { grid-template-columns: 1fr; } .reader-aside { display: none; } }
.reader-head { margin-bottom: 22px; }
.reader-head .kicker { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-size: .8rem; letter-spacing: .05em; text-transform: uppercase; color: var(--text-3); }
.reader-head h1 { margin: 10px 0 8px; }
.reader-head .lede { color: var(--text-2); font-size: 1.05rem; margin: 0; }
.prose { max-width: 74ch; }

.block { margin: 0 0 14px; }
.block-h {
  display: flex; align-items: center; gap: 12px;
  margin: 34px 0 14px; padding-top: 20px; border-top: 1px solid var(--line-soft);
  font-size: 1.16rem; font-weight: 750;
}
.block-h::before { content: ""; width: 5px; height: 20px; border-radius: 3px; background: var(--accent); }
.block-h:first-child { margin-top: 0; border-top: 0; padding-top: 0; }
.block-text { color: var(--text); font-size: 1.02rem; }
.block-text.spec { font-size: .98rem; }
.block-tip, .block-warn {
  display: flex; gap: 12px; padding: 14px 16px; border-radius: 12px; font-size: .98rem;
}
.block-tip { background: color-mix(in srgb, var(--green) 9%, var(--surface-2)); border: 1px solid color-mix(in srgb, var(--green) 26%, transparent); }
.block-tip .ico { color: var(--green); font-weight: 800; }
.block-warn { background: color-mix(in srgb, var(--amber) 10%, var(--surface-2)); border: 1px solid color-mix(in srgb, var(--amber) 30%, transparent); }
.block-warn .ico { color: var(--amber); font-weight: 800; }
.block-tip .txt, .block-warn .txt { color: var(--text); }

.check {
  display: flex; gap: 13px; align-items: flex-start; padding: 12px 14px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 11px;
  cursor: pointer; transition: border-color .14s, background .14s; user-select: none;
}
.check:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.check .box {
  flex: none; width: 22px; height: 22px; margin-top: 1px; border-radius: 7px;
  border: 2px solid var(--line); display: grid; place-items: center;
  color: transparent; font-weight: 800; font-size: .8rem; transition: all .14s;
}
.check .txt { font-size: .98rem; color: var(--text); }
.check.done { background: color-mix(in srgb, var(--green) 8%, var(--surface)); border-color: color-mix(in srgb, var(--green) 34%, transparent); }
.check.done .box { background: var(--green); border-color: var(--green); color: #04140b; }
.check.done .txt { color: var(--text-2); text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--green) 60%, transparent); }

.code-card {
  border: 1px solid var(--line); border-left: 4px solid var(--blue);
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border-radius: 13px; overflow: hidden;
}
.code-card summary {
  list-style: none; cursor: pointer; padding: 14px 16px; display: flex; gap: 14px; align-items: center;
}
.code-card summary::-webkit-details-marker { display: none; }
.code-card .code-tag {
  flex: none; font-family: var(--mono); font-weight: 800; font-size: 1rem;
  min-width: 52px; text-align: center; padding: 6px 10px; border-radius: 9px;
  background: color-mix(in srgb, var(--blue) 16%, transparent); color: var(--blue);
  border: 1px solid color-mix(in srgb, var(--blue) 32%, transparent);
}
.code-card .code-mean { font-weight: 650; }
.code-card .chev { margin-left: auto; color: var(--text-3); transition: transform .2s; }
.code-card[open] .chev { transform: rotate(90deg); }
.code-card .code-do { padding: 0 16px 16px 82px; color: var(--text-2); font-size: .96rem; }
.code-card .code-do .lbl { display: block; font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); font-weight: 700; margin-bottom: 4px; }
.code-card .do-text { display: block; margin-bottom: 10px; }

.tree-cta {
  display: flex; align-items: center; gap: 16px; padding: 18px;
  border-radius: 14px; border: 1px solid color-mix(in srgb, var(--green) 30%, var(--line));
  background: linear-gradient(180deg, color-mix(in srgb, var(--green) 10%, var(--surface)), var(--surface-2));
}
.tree-cta .glyph { flex: none; width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center; font-size: 1.3rem; background: color-mix(in srgb, var(--green) 16%, var(--surface-3)); color: var(--green); }
.tree-cta .t { flex: 1; }
.tree-cta .t b { display: block; }
.tree-cta .t span { color: var(--text-2); font-size: .88rem; }

.reader-aside { position: sticky; top: 82px; }
.aside-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 16px; margin-bottom: 14px; }
.aside-card h4 { font-size: .76rem; text-transform: uppercase; letter-spacing: .07em; color: var(--text-3); margin-bottom: 10px; }
.toc a { display: block; padding: 6px 0; color: var(--text-2); font-size: .9rem; border-left: 2px solid transparent; padding-left: 10px; }
.toc a:hover, .toc a.active { color: var(--accent); border-left-color: var(--accent); }
.progress-ring { display: flex; align-items: center; gap: 14px; }
.progress-ring .num { font-size: 1.5rem; font-weight: 800; }
.progress-ring .lbl { font-size: .84rem; color: var(--text-3); }
.meter { height: 7px; border-radius: 4px; background: var(--surface-3); overflow: hidden; margin-top: 10px; }
.meter > i { display: block; height: 100%; background: linear-gradient(90deg, var(--green), var(--accent)); transition: width .3s; }

/* ---------------------------------------------------------------- guided wizard */
.wizard { max-width: 760px; margin: 0 auto; }
.wiz-top { display: flex; align-items: center; gap: 14px; margin-bottom: 22px; }
.wiz-progress { flex: 1; }
.wiz-rail { height: 5px; border-radius: 3px; background: var(--surface-3); overflow: hidden; }
.wiz-rail > i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width .3s; }
.wiz-path { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.wiz-path .fact { font-size: .74rem; font-weight: 650; padding: 4px 10px; border-radius: 999px; background: color-mix(in srgb, var(--accent) 12%, var(--surface-2)); border: 1px solid color-mix(in srgb, var(--accent) 26%, transparent); color: var(--accent-2); }
.wiz-card {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(22px, 3vw, 34px);
  box-shadow: none;
}
.wiz-step-kicker { font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; color: var(--accent); font-weight: 750; margin-bottom: 10px; }
.wiz-q { font-size: clamp(1.3rem, 2.6vw, 1.7rem); font-weight: 800; margin: 0 0 12px; }
.wiz-body { color: var(--text-2); font-size: 1.04rem; }
.wiz-callout { margin-top: 16px; padding: 14px 16px; border-radius: 12px; font-size: .94rem; display: flex; gap: 11px; }
.wiz-callout.tool { background: var(--surface-3); border: 1px solid var(--line); }
.wiz-callout.expect { background: color-mix(in srgb, var(--blue) 9%, var(--surface-2)); border: 1px solid color-mix(in srgb, var(--blue) 26%, transparent); }
.wiz-callout.expect .ico { color: var(--blue); }
.wiz-callout.note { background: color-mix(in srgb, var(--amber) 10%, var(--surface-2)); border: 1px solid color-mix(in srgb, var(--amber) 28%, transparent); }
.wiz-callout.note .ico { color: var(--amber); }
.wiz-callout .ico { font-weight: 800; }
.wiz-callout .lbl { font-weight: 750; color: var(--text); margin-right: 4px; }
.choices { display: grid; gap: 11px; margin-top: 24px; }
.choice {
  display: flex; align-items: center; gap: 14px; text-align: left;
  padding: 16px 18px; border-radius: 4px; border: 1px solid var(--line);
  background: var(--surface); transition: transform .12s, border-color .14s, background .14s;
}
.choice:hover { border-color: var(--accent); background: var(--surface-2); }
.choice .arrow { margin-left: auto; color: var(--text-3); transition: transform .14s; }
.choice:hover .arrow { color: var(--accent); transform: translateX(4px); }
.choice .ct { flex: 1; }
.choice .ct b { display: block; font-weight: 700; }
.choice .ct span { color: var(--text-2); font-size: .88rem; }
.choice.result {
  border-color: color-mix(in srgb, var(--green) 34%, var(--line));
  background: linear-gradient(90deg, color-mix(in srgb, var(--green) 10%, var(--surface)), var(--surface));
}
.choice.result .glyph { width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; background: color-mix(in srgb, var(--green) 16%, transparent); color: var(--green); font-size: 1.1rem; }

.result-card { border-radius: var(--radius); padding: clamp(22px, 3vw, 34px); border: 1px solid var(--line); box-shadow: none; }
.result-card.ok { background: linear-gradient(180deg, color-mix(in srgb, var(--green) 12%, var(--surface)), var(--surface-2)); border-color: color-mix(in srgb, var(--green) 34%, transparent); }
.result-card.fault { background: linear-gradient(180deg, color-mix(in srgb, var(--amber) 13%, var(--surface)), var(--surface-2)); border-color: color-mix(in srgb, var(--amber) 36%, transparent); }
.result-card.stop { background: linear-gradient(180deg, color-mix(in srgb, var(--red) 14%, var(--surface)), var(--surface-2)); border-color: color-mix(in srgb, var(--red) 40%, transparent); }
.result-badge { display: inline-flex; align-items: center; gap: 9px; font-weight: 750; font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; padding: 6px 13px; border-radius: 999px; margin-bottom: 16px; }
.result-card.ok .result-badge { background: color-mix(in srgb, var(--green) 20%, transparent); color: var(--green); }
.result-card.fault .result-badge { background: color-mix(in srgb, var(--amber) 20%, transparent); color: var(--amber); }
.result-card.stop .result-badge { background: color-mix(in srgb, var(--red) 22%, transparent); color: var(--red); }
.result-card h2 { margin-bottom: 12px; }
.result-card .field { margin-top: 16px; }
.result-card .field .lbl { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); font-weight: 750; margin-bottom: 5px; }
.result-card .field .val { color: var(--text); }
.wiz-actions { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }

/* ---------------------------------------------------------------- search */
.search-overlay { position: fixed; inset: 0; z-index: 80; background: color-mix(in srgb, #000 55%, transparent); backdrop-filter: blur(4px); display: flex; align-items: flex-start; justify-content: center; padding: 8vh 16px; }
.search-overlay[hidden] { display: none; }
.search-panel { width: min(680px, 100%); background: var(--surface); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow-3); overflow: hidden; }
.search-field { display: flex; align-items: center; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--line-soft); font-size: 1.15rem; color: var(--text-3); }
.search-field input { flex: 1; border: 0; background: transparent; color: var(--text); font-size: 1.1rem; outline: none; }
.search-close { background: var(--surface-3); border: 1px solid var(--line); border-radius: 8px; padding: 5px 10px; font-size: .8rem; color: var(--text-2); }
.search-results { max-height: 58vh; overflow: auto; padding: 8px; }
.sr-group { font-size: .72rem; text-transform: uppercase; letter-spacing: .07em; color: var(--text-3); font-weight: 750; padding: 12px 12px 6px; }
.sr-item { display: flex; gap: 12px; align-items: center; padding: 12px 12px; border-radius: 11px; width: 100%; text-align: left; }
.sr-item:hover, .sr-item.active { background: var(--surface-2); }
.sr-item .ico { width: 34px; height: 34px; flex: none; border-radius: 9px; display: grid; place-items: center; background: var(--surface-3); color: var(--accent); }
.sr-item .tt { flex: 1; min-width: 0; }
.sr-item .tt b { display: block; font-weight: 650; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sr-item .tt span { color: var(--text-3); font-size: .82rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: block; }
.sr-item mark { background: color-mix(in srgb, var(--accent) 30%, transparent); color: inherit; border-radius: 3px; padding: 0 2px; }
.sr-empty { padding: 30px; text-align: center; color: var(--text-3); }

/* ---------------------------------------------------------------- misc */
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 22px; align-items: center; }
.chip-btn { padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface-2); color: var(--text-2); font-weight: 600; font-size: .88rem; transition: all .14s; }
.chip-btn:hover { border-color: var(--accent); color: var(--text); }
.chip-btn.active { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.search-inline { flex: 1; min-width: 200px; display: flex; align-items: center; gap: 10px; background: var(--surface-2); border: 1px solid var(--line); border-radius: 11px; padding: 10px 14px; color: var(--text-3); }
.search-inline input { flex: 1; border: 0; background: transparent; outline: none; color: var(--text); font-size: .95rem; }
.empty { text-align: center; color: var(--text-3); padding: 60px 20px; }
.count-line { color: var(--text-3); font-size: .88rem; margin-bottom: 16px; }
.pill-row { display: flex; gap: 8px; flex-wrap: wrap; }

.fade-in { animation: fade .35s ease both; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

@media (max-width: 780px) {
  .nav-label { display: none; }
  .nav a { padding: 9px 12px; }
  .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .search-trigger-text { display: none; }
  .search-trigger kbd { display: none; }
  .code-card .code-do { padding-left: 16px; }
}
@media (max-width: 520px) {
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
  .hero-stats { gap: 18px; }
  .app { padding: 20px 14px 70px; }
  .topbar-inner { padding: 8px 8px; gap: 4px; }
  .brand { font-size: .91rem; gap: 5px; flex:none; }
  .brand-mark svg { width: 23px; height: 23px; }
  .nav { margin-left: 0; gap: 0; flex:1; justify-content:center; }
  .nav a { padding: 7px 6px; }
  .topbar-tools { gap:4px; flex:none; }
  .theme-toggle { width: 34px; height: 34px; }
  .search-trigger { padding: 7px 8px; }
}

/* ============================================================================
   Monetization: Pro, pricing, parts, AI, maintenance, feedback
   ========================================================================== */
.pro-link {
  display: inline-flex; align-items: center; gap: 7px; font-weight: 700; font-size: .88rem;
  padding: 9px 13px; border-radius: 999px; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 34%, transparent);
  transition: all .14s;
}
.pro-link:hover { background: color-mix(in srgb, var(--accent) 20%, transparent); }
.pro-link.is-pro { color: var(--green); background: color-mix(in srgb, var(--green) 12%, transparent); border-color: color-mix(in srgb, var(--green) 34%, transparent); }

.pro-band {
  display: flex; align-items: center; gap: 24px; margin-top: 46px; padding: clamp(24px, 4vw, 40px);
  border-radius: var(--radius-lg); border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--line));
  background:
    radial-gradient(600px 260px at 90% 0%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 60%),
    linear-gradient(180deg, var(--surface), var(--bg-2));
  box-shadow: var(--shadow-2);
}
.pro-band-text { flex: 1; }
.pro-band-text h2 { margin: 8px 0 8px; }
.pro-band-text p { color: var(--text-2); max-width: 60ch; }
.pro-band-art { font-size: 4rem; opacity: .9; }
@media (max-width: 640px) { .pro-band-art { display: none; } }

/* paywall */
.paywall {
  border: 1px solid color-mix(in srgb, var(--accent) 32%, var(--line)); border-radius: var(--radius);
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 8%, var(--surface)), var(--surface-2));
  padding: clamp(20px, 3vw, 30px); margin: 22px 0;
}
.paywall-badge { display: inline-flex; align-items: center; gap: 8px; font-weight: 750; font-size: .78rem; letter-spacing: .05em; text-transform: uppercase; color: var(--accent); background: color-mix(in srgb, var(--accent) 16%, transparent); padding: 5px 12px; border-radius: 999px; }
.paywall h2 { margin: 14px 0 8px; font-size: 1.3rem; }
.paywall-lede { color: var(--text-2); max-width: 60ch; }
.paywall-list { list-style: none; padding: 0; margin: 14px 0; display: grid; gap: 8px; }
.paywall-list li { padding-left: 26px; position: relative; color: var(--text); }
.paywall-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 800; }
.paywall-fine { font-size: .78rem; color: var(--text-3); margin: 10px 0 0; }
.paywall-preview { opacity: .8; margin-bottom: 4px; }

/* parts */
.parts { margin: 30px 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.parts-head { display: flex; gap: 12px; align-items: flex-start; padding: 16px 18px; border-bottom: 1px solid var(--line-soft); background: var(--surface-2); }
.parts-ico { font-size: 1.4rem; }
.parts-sub { display: block; color: var(--text-3); font-size: .82rem; margin-top: 2px; max-width: 70ch; }
.part-row { display: flex; align-items: center; gap: 14px; padding: 13px 18px; border-bottom: 1px solid var(--line-soft); }
.part-row:last-child { border-bottom: 0; }
.part-info { flex: 1; min-width: 0; }
.part-info b { display: block; }
.part-brand { color: var(--text-3); font-size: .84rem; }
.part-acts { flex: none; }

/* AI panel */
.ai-panel { background: var(--surface); border: 1px solid color-mix(in srgb, var(--purple) 30%, var(--line)); border-radius: 14px; padding: 14px; }
.ai-head { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.ai-ico { color: var(--purple); font-size: 1.1rem; }
.ai-note { margin-left: auto; font-size: .68rem; font-weight: 750; text-transform: uppercase; letter-spacing: .05em; color: var(--purple); background: color-mix(in srgb, var(--purple) 16%, transparent); padding: 3px 8px; border-radius: 999px; }
.ai-log { max-height: 260px; overflow: auto; display: flex; flex-direction: column; gap: 10px; margin-bottom: 10px; }
.ai-empty { color: var(--text-3); font-size: .86rem; }
.ai-empty b { color: var(--text-2); }
.ai-msg { display: flex; flex-direction: column; gap: 3px; }
.ai-msg .who { font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); font-weight: 750; }
.ai-msg .say { font-size: .9rem; color: var(--text); background: var(--surface-2); border: 1px solid var(--line-soft); border-radius: 10px; padding: 9px 12px; white-space: pre-wrap; }
.ai-msg.user .say { background: color-mix(in srgb, var(--blue) 10%, var(--surface-2)); border-color: color-mix(in srgb, var(--blue) 24%, transparent); }
.ai-row { display: flex; gap: 8px; }
.ai-input { flex: 1; width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface-2); color: var(--text); font-size: .92rem; outline: none; }
.ai-input:focus { border-color: var(--accent); box-shadow: var(--ring); }
.ai-fine { font-size: .7rem; color: var(--text-3); margin: 10px 0 0; }

/* pricing */
.price-grid { margin-top: 26px; align-items: stretch; }
.price-card { display: flex; flex-direction: column; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.price-card.featured { border-color: color-mix(in srgb, var(--accent) 44%, var(--line)); background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 8%, var(--surface)), var(--surface)); box-shadow: var(--shadow-2); }
.price-name { display: flex; align-items: center; gap: 10px; font-weight: 750; font-size: 1.05rem; }
.price-tag { font-size: .68rem; text-transform: uppercase; letter-spacing: .05em; color: var(--accent-ink); background: var(--accent); padding: 3px 8px; border-radius: 999px; font-weight: 750; }
.price-amt { margin: 12px 0 16px; display: flex; align-items: baseline; gap: 7px; }
.price-amt b { font-size: 2.2rem; font-weight: 800; }
.price-amt span { color: var(--text-3); font-size: .88rem; }
.price-list { list-style: none; padding: 0; margin: 0 0 20px; display: grid; gap: 9px; flex: 1; }
.price-list li { padding-left: 24px; position: relative; font-size: .92rem; color: var(--text-2); }
.price-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 800; }
.tech-band { display: flex; align-items: center; gap: 20px; padding: 22px 24px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface-2); }
.tech-band h3 { margin-bottom: 6px; }
.tech-band p { color: var(--text-2); max-width: 60ch; }
.tech-ico { font-size: 2.6rem; }
@media (max-width: 640px) { .tech-ico { display: none; } }

/* maintenance */
.maint-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 20px; }
@media (max-width: 720px) { .maint-grid { grid-template-columns: 1fr; } }
.maint-card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); padding: 18px; }
.maint-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.maint-season { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; font-weight: 750; color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); padding: 4px 10px; border-radius: 999px; }
.maint-when { font-size: .78rem; color: var(--text-3); }
.maint-card h3 { margin: 12px 0 12px; font-size: 1.05rem; }
.maint-steps { display: grid; gap: 8px; }

/* feedback */
.feedback { margin-top: 26px; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-2); }
.feedback-q { display: block; margin-bottom: 12px; }
.feedback-btns { display: flex; gap: 10px; flex-wrap: wrap; }
.feedback-thanks b { display: block; margin-bottom: 4px; }
.feedback-thanks span { color: var(--text-2); font-size: .9rem; display: block; margin-bottom: 10px; }