/* anyservicemanual.com — D Horizontal chapters + pipe/gutter heat watt strip
   Palette: pipe / heat / frost / gutter / paper / ink · Syne + Source Serif 4 · as- prefix */

:root {
  --as-pipe: #3D4F5F;
  --as-heat: #B86B2E;
  --as-frost: #6B8F9E;
  --as-gutter: #2F6F5E;
  --as-paper: #E6E9EC;
  --as-ink: #14181C;
  --as-line: rgba(20, 24, 28, 0.12);
  --as-line-strong: rgba(20, 24, 28, 0.22);
  --as-header-h: 62px;
  --as-font-ui: "Syne", system-ui, sans-serif;
  --as-font-display: "Source Serif 4", Georgia, serif;
  --as-radius: 2px;
  --as-shadow: 0 16px 44px rgba(20, 24, 28, 0.1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--as-font-ui);
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--as-ink);
  background:
    radial-gradient(circle at 10% 6%, rgba(184, 107, 46, 0.12), transparent 40%),
    radial-gradient(circle at 92% 14%, rgba(107, 143, 158, 0.14), transparent 42%),
    linear-gradient(180deg, var(--as-paper), #d8dde2 50%, var(--as-paper));
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--as-gutter); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--as-heat); }

.as-shell {
  width: min(100% - 1.5rem, 1140px);
  margin-inline: auto;
}

/* Mast */
.as-mast {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  height: var(--as-header-h);
  background: rgba(230, 233, 236, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--as-line);
  transition: background 0.2s, box-shadow 0.2s;
}
.as-mast.is-solid {
  background: rgba(230, 233, 236, 0.97);
  box-shadow: var(--as-shadow);
}
.as-mast__row {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.as-mark {
  font-family: var(--as-font-ui);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--as-ink);
  text-decoration: none;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}
.as-mark span { color: var(--as-heat); }
.as-nav {
  display: none;
  gap: 1.05rem;
  margin-left: auto;
}
.as-nav a {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--as-pipe);
  text-decoration: none;
}
.as-nav a:hover { color: var(--as-heat); }
.as-mast__end {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-left: auto;
}
.as-call {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--as-ink);
  text-decoration: none;
  white-space: nowrap;
}
.as-icn {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--as-radius);
  background: var(--as-ink);
  color: var(--as-paper);
  text-decoration: none;
}
.as-icn svg { width: 18px; height: 18px; }
.as-burger {
  width: 40px;
  height: 40px;
  border: 1px solid var(--as-line-strong);
  background: transparent;
  border-radius: var(--as-radius);
  display: grid;
  place-content: center;
  gap: 5px;
  cursor: pointer;
  padding: 0;
}
.as-burger i {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--as-ink);
}
.as-slide {
  position: fixed;
  inset: var(--as-header-h) 0 auto;
  z-index: 999;
  background: var(--as-ink);
  color: var(--as-paper);
  padding: 1.25rem 1.5rem 1.75rem;
  display: none;
  flex-direction: column;
  gap: 0.85rem;
}
.as-slide.is-open { display: flex; }
.as-slide a {
  color: var(--as-paper);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
}
.as-slide__m { margin-top: 0.5rem; padding-top: 0.85rem; border-top: 1px solid rgba(230,233,236,.2); }
.as-slide__m a { color: var(--as-heat); }

/* Chapters rail */
.as-rail {
  padding: calc(var(--as-header-h) + 1.75rem) 0 2.5rem;
}
.as-rail__head { max-width: 42rem; margin-bottom: 1.25rem; }
.as-rail__k {
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--as-frost);
}
.as-rail__brand {
  margin: 0 0 0.65rem;
  font-family: var(--as-font-display);
  font-size: clamp(1.8rem, 4vw, 2.55rem);
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.as-rail__lead {
  margin: 0;
  color: var(--as-pipe);
  max-width: 38rem;
}
.as-chap-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 1.25rem 0 0.85rem;
}
.as-chap-nav button {
  font-family: var(--as-font-ui);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--as-line-strong);
  background: rgba(255,255,255,0.45);
  color: var(--as-pipe);
  padding: 0.45rem 0.7rem;
  border-radius: var(--as-radius);
  cursor: pointer;
}
.as-chap-nav button.is-on {
  background: var(--as-ink);
  color: var(--as-paper);
  border-color: var(--as-ink);
}
.as-chapters {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: min(86vw, 520px);
  gap: 0.85rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 0.35rem 0 1rem;
  -webkit-overflow-scrolling: touch;
}
.as-chapters:focus { outline: 2px solid var(--as-heat); outline-offset: 3px; }
.as-chapter {
  scroll-snap-align: start;
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--as-line);
  border-radius: var(--as-radius);
  padding: 1.35rem 1.25rem 1.2rem;
  min-height: 280px;
  box-shadow: var(--as-shadow);
}
.as-chapter--hero {
  background:
    linear-gradient(145deg, rgba(61,79,95,0.92), rgba(20,24,28,0.96)),
    var(--as-ink);
  color: var(--as-paper);
  border-color: transparent;
}
.as-chapter--hero h1 {
  font-family: var(--as-font-display);
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  line-height: 1.25;
  margin: 0 0 0.75rem;
  font-weight: 650;
}
.as-chapter--hero p { color: rgba(230,233,236,0.88); }
.as-chapter__tag {
  margin: 0 0 0.55rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--as-heat);
}
.as-chapter--hero .as-chapter__tag { color: #e8b07a; }
.as-chapter h3 {
  font-family: var(--as-font-display);
  font-size: 1.25rem;
  margin: 0 0 0.55rem;
  font-weight: 650;
}
.as-chapter p { margin: 0 0 0.85rem; color: var(--as-pipe); }
.as-chapter--hero .as-chapter__meta { border-color: rgba(230,233,236,0.18); }
.as-chapter--hero .as-chapter__meta b { color: var(--as-paper); }
.as-chapter--hero .as-chapter__meta span { color: rgba(230,233,236,0.65); }
.as-chapter__meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  margin-top: auto;
  padding-top: 0.85rem;
  border-top: 1px solid var(--as-line);
}
.as-chapter__meta b {
  display: block;
  font-size: 0.95rem;
  color: var(--as-ink);
}
.as-chapter__meta span {
  font-size: 0.72rem;
  color: var(--as-frost);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.as-rail__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 0.5rem 0 0;
}

/* Buttons */
.as-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--as-font-ui);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  border-radius: var(--as-radius);
  padding: 0.75rem 1.15rem;
  border: 1px solid transparent;
  cursor: pointer;
}
.as-btn--heat {
  background: var(--as-heat);
  color: #fff;
}
.as-btn--heat:hover { filter: brightness(1.05); color: #fff; }
.as-btn--line {
  background: transparent;
  border-color: var(--as-line-strong);
  color: var(--as-ink);
}
.as-btn--line:hover { border-color: var(--as-heat); color: var(--as-heat); }
.as-btn--frame {
  background: var(--as-ink);
  color: var(--as-paper);
}
.as-btn--frame:hover { color: var(--as-paper); filter: brightness(1.08); }
.as-btn--full { width: 100%; }

/* Heat watt strip */
.as-strip {
  padding: 2.5rem 0 3rem;
  background:
    linear-gradient(180deg, rgba(61,79,95,0.06), transparent 40%),
    rgba(255,255,255,0.35);
  border-block: 1px solid var(--as-line);
}
.as-strip__head { max-width: 44rem; margin-bottom: 1.35rem; }
.as-strip__head h2 {
  font-family: var(--as-font-display);
  font-size: clamp(1.45rem, 3vw, 2rem);
  margin: 0 0 0.55rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}
.as-strip__head p { margin: 0; color: var(--as-pipe); }
.as-strip__grid {
  display: grid;
  gap: 1rem;
}
.as-strip-panel,
.as-strip-out {
  background: rgba(255,255,255,0.78);
  border: 1px solid var(--as-line);
  border-radius: var(--as-radius);
  padding: 1.15rem;
  box-shadow: var(--as-shadow);
}
.as-strip-panel label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--as-frost);
  margin: 0.85rem 0 0.45rem;
}
.as-strip-panel label:first-child { margin-top: 0; }
.as-diam-row,
.as-frost-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.45rem;
}
.as-diam,
.as-frost {
  font-family: var(--as-font-ui);
  text-align: left;
  border: 1px solid var(--as-line-strong);
  background: rgba(230,233,236,0.55);
  border-radius: var(--as-radius);
  padding: 0.65rem 0.7rem;
  cursor: pointer;
  color: var(--as-ink);
}
.as-diam small,
.as-frost small {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.7rem;
  color: var(--as-frost);
  font-weight: 500;
}
.as-diam.is-on,
.as-frost.is-on {
  background: var(--as-ink);
  color: var(--as-paper);
  border-color: var(--as-ink);
}
.as-diam.is-on small,
.as-frost.is-on small { color: rgba(230,233,236,0.7); }
.as-len-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.as-len-row input[type="range"] {
  flex: 1;
  accent-color: var(--as-heat);
}
.as-len-val {
  font-weight: 700;
  min-width: 3.2rem;
  font-variant-numeric: tabular-nums;
}
.as-strip-out__k {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--as-frost);
}
.as-strip-out__wpm {
  margin: 0.35rem 0 0.75rem;
  font-family: var(--as-font-display);
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1;
}
.as-strip-out__wpm small {
  font-size: 0.45em;
  font-family: var(--as-font-ui);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--as-heat);
}
.as-wattmeter {
  height: 10px;
  background: rgba(61,79,95,0.15);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 0.85rem;
}
.as-wattmeter i {
  display: block;
  height: 100%;
  width: 40%;
  background: linear-gradient(90deg, var(--as-frost), var(--as-heat));
  border-radius: inherit;
  transition: width 0.25s ease;
}
.as-strip-out__pack {
  margin: 0 0 0.45rem;
  font-weight: 700;
  font-size: 1.05rem;
}
.as-strip-out__meta {
  margin: 0 0 1rem;
  font-size: 0.92rem;
  color: var(--as-pipe);
}

/* Stack sections */
.as-stack { padding: 2.75rem 0 0.5rem; }
.as-stack__eye {
  margin: 0 0 0.35rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--as-heat);
}
.as-stack h2 {
  font-family: var(--as-font-display);
  font-size: clamp(1.45rem, 3vw, 2rem);
  margin: 0 0 0.55rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}
.as-stack__lead {
  margin: 0 0 1.25rem;
  color: var(--as-pipe);
  max-width: 40rem;
}
.as-offers {
  display: grid;
  gap: 0.75rem;
}
.as-offer {
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--as-line);
  border-left: 3px solid var(--as-heat);
  border-radius: var(--as-radius);
  padding: 1.1rem 1.15rem;
}
.as-offer__code {
  margin: 0 0 0.35rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--as-frost);
}
.as-offer h3 {
  font-family: var(--as-font-display);
  margin: 0 0 0.4rem;
  font-size: 1.15rem;
  font-weight: 650;
}
.as-offer p { margin: 0; color: var(--as-pipe); font-size: 0.95rem; }
.as-offer__price {
  margin: 0.75rem 0 0 !important;
  font-weight: 700;
  color: var(--as-ink) !important;
  font-size: 1.05rem !important;
}
.as-offer__price small {
  display: block;
  font-weight: 500;
  font-size: 0.72rem;
  color: var(--as-frost);
  margin-top: 0.15rem;
}

/* FAQ essay */
.as-essay {
  padding: 2.75rem 0;
  margin-top: 1.5rem;
  background: var(--as-ink);
  color: var(--as-paper);
}
.as-essay .as-stack__eye { color: #e8b07a; }
.as-essay h2 { color: var(--as-paper); }
.as-essay .as-stack__lead { color: rgba(230,233,236,0.75); }
.as-essay__wrap {
  display: grid;
  gap: 1.5rem;
}
.as-essay-toc {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(230,233,236,0.12);
  border-radius: var(--as-radius);
  padding: 1.1rem 1.15rem;
}
.as-essay-toc h3 {
  margin: 0 0 0.65rem;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--as-frost);
}
.as-essay-toc ol {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.35rem;
}
.as-essay-toc a {
  color: rgba(230,233,236,0.88);
  text-decoration: none;
  font-size: 0.9rem;
}
.as-essay-toc a:hover { color: #e8b07a; }
.as-essay-body h3 {
  font-family: var(--as-font-display);
  font-size: 1.2rem;
  margin: 1.75rem 0 0.55rem;
  font-weight: 650;
  scroll-margin-top: calc(var(--as-header-h) + 12px);
}
.as-essay-body h3:first-child { margin-top: 0; }
.as-essay-body p {
  margin: 0 0 0.85rem;
  color: rgba(230,233,236,0.84);
  max-width: 68ch;
}
.as-essay-body .as-q {
  color: #e8b07a;
  font-weight: 600;
  font-style: italic;
}

/* Regions */
.as-regions {
  padding: 2.75rem 0;
  border-top: 1px solid var(--as-line);
}
.as-regions h2 {
  font-family: var(--as-font-display);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin: 0 0 0.55rem;
  font-weight: 650;
}
.as-regions__lead { margin: 0 0 1.1rem; color: var(--as-pipe); max-width: 40rem; }
.as-city-belt {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.25rem;
}
.as-city-chip {
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--as-line-strong);
  border-radius: var(--as-radius);
  background: rgba(255,255,255,0.55);
  color: var(--as-pipe);
}
.as-city-chip--base {
  background: var(--as-gutter);
  color: #fff;
  border-color: var(--as-gutter);
}
.as-region-notes {
  display: grid;
  gap: 0.75rem;
}
.as-region-note {
  background: rgba(255,255,255,0.55);
  border: 1px solid var(--as-line);
  padding: 0.95rem 1rem;
  border-radius: var(--as-radius);
}
.as-region-note b { display: block; margin-bottom: 0.25rem; }

/* Cases / reviews / faq */
.as-cases,
.as-reviews,
.as-faq { display: grid; gap: 0.75rem; }
.as-case,
.as-rev {
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--as-line);
  border-radius: var(--as-radius);
  padding: 1.1rem 1.15rem;
}
.as-case__g,
.as-rev__who {
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--as-frost);
}
.as-case h3 {
  font-family: var(--as-font-display);
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
  font-weight: 650;
}
.as-case p,
.as-rev p { margin: 0; color: var(--as-pipe); }
.as-rev__stars { color: var(--as-heat); margin: 0 0 0.35rem !important; letter-spacing: 0.08em; }
.as-faq details {
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--as-line);
  border-radius: var(--as-radius);
  padding: 0.85rem 1rem;
}
.as-faq summary {
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}
.as-faq summary::-webkit-details-marker { display: none; }
.as-faq details[open] summary { color: var(--as-heat); margin-bottom: 0.45rem; }
.as-faq details p { margin: 0; color: var(--as-pipe); }

/* Lead */
.as-lead {
  padding: 2.75rem 0 3rem;
  background:
    linear-gradient(160deg, rgba(47,111,94,0.1), transparent 50%),
    rgba(255,255,255,0.4);
  border-top: 1px solid var(--as-line);
}
.as-lead__grid {
  display: grid;
  gap: 1.25rem;
}
.as-form {
  background: rgba(255,255,255,0.85);
  border: 1px solid var(--as-line);
  border-radius: var(--as-radius);
  padding: 1.2rem;
  box-shadow: var(--as-shadow);
}
.as-field { margin-bottom: 0.85rem; }
.as-field label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--as-frost);
  margin-bottom: 0.3rem;
}
.as-field input,
.as-field select,
.as-field textarea {
  width: 100%;
  font: inherit;
  padding: 0.7rem 0.75rem;
  border: 1px solid var(--as-line-strong);
  border-radius: var(--as-radius);
  background: #fff;
  color: var(--as-ink);
}
.as-field textarea { min-height: 110px; resize: vertical; }
.as-ok {
  display: none;
  margin: 0.75rem 0 0;
  font-size: 0.9rem;
  color: var(--as-gutter);
  font-weight: 600;
}
.as-ok.is-show { display: block; }
.as-lead-aside {
  background: var(--as-ink);
  color: var(--as-paper);
  border-radius: var(--as-radius);
  padding: 1.2rem;
}
.as-lead-aside h3 {
  font-family: var(--as-font-display);
  margin: 0 0 0.45rem;
  font-weight: 650;
}
.as-lead-aside > p { margin: 0 0 1rem; color: rgba(230,233,236,0.75); }
.as-lead-aside dl { margin: 0; display: grid; gap: 0.65rem; }
.as-lead-aside dt {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--as-frost);
}
.as-lead-aside dd { margin: 0.15rem 0 0; }
.as-lead-aside a { color: #e8b07a; }

/* Legal */
.as-legal {
  padding: 2.5rem 0 3rem;
  background: #dfe3e7;
  border-top: 1px solid var(--as-line);
}
.as-legal h2 {
  font-family: var(--as-font-display);
  margin: 0 0 1rem;
  font-size: 1.35rem;
  font-weight: 650;
}
.as-legal__grid {
  display: grid;
  gap: 1.25rem;
}
.as-passport {
  background: rgba(255,255,255,0.65);
  border: 1px solid var(--as-line);
  border-radius: var(--as-radius);
  padding: 1.1rem;
}
.as-passport h3 { margin: 0 0 0.4rem; font-family: var(--as-font-ui); }
.as-passport dl {
  margin: 0.85rem 0 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 0.85rem;
  font-size: 0.92rem;
}
.as-passport dt { color: var(--as-frost); }
.as-passport dd { margin: 0; }
.as-copy {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--as-frost);
}

/* Fade */
.as-fade {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}
.as-fade.is-in {
  opacity: 1;
  transform: none;
}

@media (min-width: 720px) {
  .as-nav { display: flex; }
  .as-burger { display: none; }
  .as-mast__end { margin-left: 0; }
  .as-diam-row,
  .as-frost-row { grid-template-columns: repeat(4, 1fr); }
  .as-strip__grid { grid-template-columns: 1.35fr 1fr; }
  .as-offers { grid-template-columns: 1fr 1fr; }
  .as-cases,
  .as-reviews { grid-template-columns: repeat(3, 1fr); }
  .as-region-notes { grid-template-columns: 1fr 1fr; }
  .as-essay__wrap { grid-template-columns: 0.85fr 1.4fr; align-items: start; }
  .as-essay-toc { position: sticky; top: calc(var(--as-header-h) + 12px); }
  .as-lead__grid { grid-template-columns: 1.2fr 0.8fr; }
  .as-legal__grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 980px) {
  .as-chapters { grid-auto-columns: min(42%, 480px); }
}