/* Zotero.software — archival library theme */
:root {
  --ink-void: #0B0909;
  --ink-char: #100D0D;
  --ink-espresso: #151110;
  --ink-wine: #171011;
  --ink-deep: #0D0B0B;
  --surface-panel: #211416;
  --surface-elevated: #201416;
  --surface-panel-alt: #241719;
  --accent-oxblood: #7C2335;
  --accent-burgundy: #8F2940;
  --accent-burgundy-bright: #A52A43;
  --accent-copper: #C47E52;
  --accent-brass: #C4894A;
  --accent-gold: #D2A66E;
  --ivory: #F1E9DE;
  --ivory-muted: #C9BEB0;
  --slate-warm: #8A8178;
  --paper: #EEE5D7;
  --paper-alt: #F2EADF;
  --line: color-mix(in srgb, var(--accent-gold) 18%, #2A221C);
  --rail-w: 15.5rem;
  --banner-h: 3.25rem;
  --wide: 1280px;
  --wide-nav: 1320px;
  --wide-prose: 42rem;
  --gutter: 1.5rem;
  --font-display: "Cormorant Garamond", "Newsreader", Georgia, serif;
  --font-body: "Source Sans 3", "IBM Plex Sans", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html[dir="rtl"] { direction: rtl; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--ink-void);
  color: var(--ivory);
  font-size: 17.5px;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: clip;
}
h1, h2, h3, .type-display { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.02em; }
a { color: var(--accent-gold); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent-copper);
  outline-offset: 3px;
}

/* Shell: top navbar (single bar) */
.shell { display: block; min-height: 100vh; }
.rail-side {
  display: none;
}
.rail-brand { display: none; }
.rail-nav { display: none; }
.rail-side .rail-foot { display: none; }

.rail-main { min-width: 0; }
.rail-banner {
  position: sticky;
  top: 0;
  z-index: 45;
  height: var(--banner-h);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  column-gap: 1rem;
  /* Full-bleed bar; inner content sits in ~1320px */
  padding-inline: max(var(--gutter), calc((100% - var(--wide-nav)) / 2));
  background: color-mix(in srgb, #14100f 62%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid color-mix(in srgb, var(--accent-gold) 10%, transparent);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--accent-gold) 8%, transparent);
  transition: background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.rail-banner.is-scrolled {
  background: color-mix(in srgb, #120e0d 92%, transparent);
  border-bottom-color: var(--line);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--accent-gold) 10%, transparent),
    0 8px 22px rgba(0,0,0,.28);
}
.banner-mark {
  display: flex;
  align-items: center;
  gap: .55rem;
  text-decoration: none;
  color: var(--ivory);
  flex-shrink: 0;
  justify-self: start;
  grid-column: 1;
}
.banner-mark img {
  width: 26px;
  height: 26px;
  border-radius: 6px;
}
.banner-mark strong {
  font-family: var(--font-display);
  font-size: 1.28rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1;
}
.top-nav {
  display: none;
  align-items: center;
  justify-content: center;
  gap: clamp(0.85rem, 1.4vw, 1.35rem);
  grid-column: 2;
  justify-self: center;
}
.top-nav .rail-link {
  display: inline-block;
  padding: .2rem 0;
  border-radius: 0;
  color: var(--ivory-muted);
  text-decoration: none;
  font-size: .82rem;
  font-weight: 500;
  letter-spacing: .01em;
  line-height: 1.2;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  box-shadow: none;
  transition: color .15s ease, border-color .15s ease;
}
.top-nav .rail-link:hover { color: var(--ivory); background: transparent; }
.top-nav .rail-link[aria-current="page"] {
  color: var(--ivory);
  background: transparent;
  border-bottom-color: var(--accent-burgundy);
  box-shadow: none;
}
.banner-actions {
  display: flex;
  align-items: center;
  gap: .55rem;
  justify-self: end;
  grid-column: 3;
  margin-inline-start: 0;
}
.act-nav {
  padding: .4rem .85rem !important;
  font-size: .78rem !important;
  min-height: 0 !important;
  border-radius: 6px;
  line-height: 1.2;
}
.rail-menu-btn {
  display: inline-flex;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ivory);
  border-radius: 7px;
  padding: .32rem;
  cursor: pointer;
}
@media (min-width: 1024px) {
  .top-nav { display: flex; }
  .rail-menu-btn { display: none; }
}

/* Mobile drawer reuses #rail-side */
@media (max-width: 1023px) {
  .rail-side {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    position: fixed;
    inset: 0 auto 0 0;
    width: min(18rem, 86vw);
    height: 100vh;
    padding: 1.35rem 1.1rem 1.5rem;
    background: linear-gradient(180deg, #140f0e 0%, #0e0b0a 100%);
    border-inline-end: 1px solid var(--line);
    z-index: 60;
    transform: translateX(-105%);
    transition: transform .25s ease;
    box-shadow: 20px 0 40px rgba(0,0,0,.4);
  }
  html[dir="rtl"] .rail-side {
    inset: 0 0 0 auto;
    transform: translateX(105%);
  }
  body.nav-open .rail-side { transform: translateX(0); }
  .rail-side .rail-brand {
    display: flex;
    align-items: center;
    gap: .7rem;
    text-decoration: none;
    color: var(--ivory);
  }
  .rail-side .rail-brand img { border-radius: 7px; }
  .rail-side .rail-brand span {
    font-family: var(--font-display);
    font-size: 1.45rem;
  }
  .rail-side .rail-nav {
    display: flex;
    flex-direction: column;
    gap: .15rem;
  }
  .rail-side .rail-link {
    display: block;
    padding: .62rem .75rem;
    border-radius: 8px;
    color: var(--ivory-muted);
    text-decoration: none;
    font-size: .92rem;
    font-weight: 500;
    border: 1px solid transparent;
  }
  .rail-side .rail-link:hover {
    color: var(--ivory);
    background: color-mix(in srgb, var(--accent-burgundy) 14%, transparent);
  }
  .rail-side .rail-link[aria-current="page"] {
    color: var(--ivory);
    background: color-mix(in srgb, var(--accent-burgundy) 22%, transparent);
    border-color: color-mix(in srgb, var(--accent-gold) 28%, transparent);
    box-shadow: inset 3px 0 0 var(--accent-burgundy);
  }
  .rail-side .rail-foot {
    display: block;
    margin-top: auto;
    font-size: .75rem;
    color: var(--slate-warm);
    padding: .5rem .75rem;
  }
}

.wrap {
  width: min(100% - (var(--gutter) * 2), var(--wide));
  margin-inline: auto;
}
.wrap-prose { max-width: var(--wide-prose); }
.wrap-reading { max-width: 48rem; }
.wrap-showcase {
  width: min(100% - (var(--gutter) * 2), 1320px);
  margin-inline: auto;
}

@media (max-width: 1439px) {
  :root { --gutter: 2rem; }
}
@media (max-width: 1023px) {
  :root { --gutter: 1.25rem; }
}
@media (max-width: 480px) {
  :root { --gutter: 1rem; }
}

/* Buttons */
.act-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem;
  background: linear-gradient(180deg, var(--accent-burgundy-bright) 0%, var(--accent-burgundy) 42%, var(--accent-oxblood) 100%);
  color: #fff;
  padding: .85rem 1.55rem;
  min-height: 3.15rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  text-decoration: none;
  border: 1px solid color-mix(in srgb, var(--accent-gold) 24%, transparent);
  box-shadow:
    0 2px 0 color-mix(in srgb, #000 35%, transparent),
    inset 0 1px 0 color-mix(in srgb, #fff 20%, transparent),
    0 12px 28px color-mix(in srgb, var(--accent-oxblood) 32%, transparent);
  transition: transform .15s ease, filter .15s ease, box-shadow .15s ease;
}
.act-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.07);
  box-shadow:
    0 4px 0 color-mix(in srgb, #000 28%, transparent),
    inset 0 1px 0 color-mix(in srgb, #fff 24%, transparent),
    0 16px 32px color-mix(in srgb, var(--accent-oxblood) 42%, transparent);
}
.act-ghost {
  display: inline-flex; align-items: center; justify-content: center;
  background: color-mix(in srgb, #0c0a09 55%, transparent);
  color: var(--ivory);
  padding: .85rem 1.4rem;
  min-height: 3.15rem;
  border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--accent-gold) 42%, #3a322c);
  text-decoration: none;
  font-weight: 500;
  transition: border-color .15s ease, transform .15s ease, background .15s ease;
}
.act-ghost:hover {
  border-color: var(--accent-gold);
  background: color-mix(in srgb, var(--accent-gold) 10%, transparent);
  transform: translateY(-2px);
}
.act-hero {
  padding-inline: 1.75rem;
  font-size: 1rem;
  min-height: 3.3rem;
}

.eyebrow {
  font-size: .72rem;
  font-weight: 650;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-gold);
}

/* Surfaces */
.surface-a {
  background: var(--surface-panel);
  border: 1px solid color-mix(in srgb, var(--accent-copper) 25%, transparent);
  border-radius: 10px;
  box-shadow: 0 12px 30px rgba(0,0,0,.28);
}
.surface-b {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
}
.surface-c {
  background: var(--surface-panel-alt);
  border: 1px solid color-mix(in srgb, var(--accent-copper) 22%, transparent);
  border-radius: 10px;
}
.surface-d {
  background: var(--paper);
  color: #1A1612;
  border-radius: 10px;
  border: 1px solid #E4D8C8;
}
.surface-d .muted { color: #5C534A !important; }

.rule-gold {
  width: 3.2rem; height: 2px; border: 0; margin: 0 0 1.1rem;
  background: linear-gradient(90deg, var(--accent-burgundy), var(--accent-gold));
}

.sep-nodes {
  display: block;
  position: relative;
  height: 14px;
  margin-block: 0;
  margin-inline: auto; /* keep .wrap horizontal centering */
  border: 0;
  padding: 0;
  opacity: .55;
}
.sep-nodes::before,
.sep-nodes::after {
  content: "";
  position: absolute;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}
.sep-nodes::before {
  inset-inline-start: 0;
  inset-inline-end: calc(50% + .55rem);
  background: linear-gradient(to right, transparent, var(--accent-burgundy), var(--accent-gold));
}
.sep-nodes::after {
  inset-inline-start: calc(50% + .55rem);
  inset-inline-end: 0;
  background: linear-gradient(to right, var(--accent-gold), var(--accent-burgundy), transparent);
}
.sep-nodes span {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--accent-copper);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-copper) 25%, transparent);
}

/* Hero vault — background path & visibility intentionally preserved */
.vault-hero {
  position: relative;
  isolation: isolate;
  z-index: 0;
  width: 100%;
  min-height: min(88vh, 900px);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 5.5rem var(--gutter) 3.75rem;
  background-color: var(--ink-void);
  background-image: url("media/vault-library-hero.png");
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  overflow: hidden;
}
/* Soft exit into Meet Zotero — bottom only, does not darken the artwork frame */
.vault-hero::before {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: min(32%, 14rem);
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(13, 10, 9, 0.22) 48%,
    rgba(18, 16, 15, 0.88) 82%,
    var(--ink-char) 100%
  );
}
/* Localized center veil only — edges stay clear so books/icons show */
.vault-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(
      ellipse 42% 48% at 50% 46%,
      rgba(8, 7, 6, 0.34) 0%,
      rgba(8, 7, 6, 0.16) 42%,
      rgba(8, 7, 6, 0.05) 68%,
      transparent 86%
    );
}
.vault-hero-inner {
  position: relative;
  z-index: 3;
  width: min(100%, 720px);
  max-width: 720px;
  margin-inline: auto;
  padding-inline: .25rem;
}
.vault-hero .mark {
  width: clamp(64px, 5.2vw, 76px);
  height: auto;
  margin: 0 auto 1.55rem;
  border-radius: 15px;
  box-shadow:
    0 14px 40px rgba(0,0,0,.48),
    0 0 0 1px color-mix(in srgb, var(--accent-gold) 32%, transparent),
    0 0 26px color-mix(in srgb, var(--accent-gold) 26%, transparent),
    0 0 52px color-mix(in srgb, var(--accent-burgundy) 16%, transparent);
}
.vault-hero .eyebrow {
  font-size: .78rem;
  letter-spacing: .22em;
  color: color-mix(in srgb, var(--accent-gold) 78%, var(--accent-copper));
  margin: 0 0 .55rem;
  text-shadow: 0 2px 18px rgba(0,0,0,.55);
}
.vault-hero h1 {
  font-size: clamp(4.5rem, 6vw, 6.8rem);
  line-height: .98;
  letter-spacing: -0.03em;
  margin: .2rem 0 1.15rem;
  color: var(--ivory);
  text-shadow: 0 2px 22px rgba(0,0,0,.55);
}
.vault-hero .lede {
  font-size: clamp(1.08rem, 1.35vw, 1.2rem);
  line-height: 1.72;
  color: var(--ivory-muted);
  max-width: 620px;
  margin: 0 auto 1.85rem;
  text-shadow: 0 2px 16px rgba(0,0,0,.5);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
  justify-content: center;
}
.vault-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: .55rem .15rem;
  margin-top: 1.65rem;
  font-size: .92rem;
  color: color-mix(in srgb, var(--ivory-muted) 82%, var(--slate-warm));
  text-shadow: 0 1px 12px rgba(0,0,0,.45);
}
.vault-meta span {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: 0 .55rem;
}
.vault-meta span:not(:last-child)::after {
  content: "·";
  color: color-mix(in srgb, var(--accent-gold) 55%, var(--slate-warm));
  margin-inline-start: .55rem;
  font-weight: 600;
}

.dust { position: absolute; inset: 0; pointer-events: none; z-index: 2; overflow: hidden; }
.dust i {
  position: absolute;
  width: 2px; height: 2px;
  border-radius: 50%;
  background: var(--accent-gold);
  opacity: .32;
  animation: mote 18s linear infinite;
}
@keyframes mote {
  from { transform: translateY(28px) translateX(0); opacity: 0; }
  12% { opacity: .4; }
  55% { transform: translateY(-70px) translateX(6px); opacity: .28; }
  to { transform: translateY(-150px) translateX(-4px); opacity: 0; }
}

.motif-lines {
  position: absolute; inset: 0; pointer-events: none; opacity: .07;
  background-image:
    radial-gradient(circle at 20% 30%, var(--accent-copper) 0 1px, transparent 1.5px),
    radial-gradient(circle at 80% 60%, var(--accent-gold) 0 1px, transparent 1.5px);
  background-size: 120px 90px, 160px 120px;
}

/* Chapters */
.chapter {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 7.5vw, 6.5rem) 0;
}
.chapter.tone-void { background: var(--ink-void); }
.chapter.tone-char { background: var(--ink-char); }
.chapter.tone-espresso { background: var(--ink-espresso); }
.chapter.tone-wine { background: var(--ink-wine); }
.chapter.tone-deep { background: var(--ink-deep); }
.chapter.tone-paper { background: var(--paper); color: #1A1612; }
.chapter.tone-paper .eyebrow { color: var(--accent-oxblood); }
.chapter.tone-paper p, .chapter.tone-paper .lede, .chapter.tone-paper .section-copy { color: #4A433B; }

.chapter h2 {
  font-size: clamp(2.4rem, 4vw, 4.1rem);
  line-height: 1.1;
  margin: 0 0 1.1rem;
  color: var(--ivory);
  max-width: 18ch;
}
.chapter.tone-paper h2 { color: #1A1612; }
.chapter h3 {
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  margin: 0 0 .65rem;
}

.section-copy {
  color: var(--ivory-muted);
  max-width: 36rem;
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.72;
}

/* Subtle warm charcoal wash only — no burgundy/purple section cast */
.chapter-atmos::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 50% 40% at 10% 20%, rgba(32, 26, 24, 0.55), transparent 70%),
    radial-gradient(ellipse 45% 35% at 90% 75%, rgba(24, 20, 18, 0.45), transparent 72%);
  opacity: .55;
}
.chapter-atmos > * { position: relative; z-index: 1; }

.cite-motif {
  position: absolute;
  inset: 8% 0 auto;
  height: 55%;
  pointer-events: none;
  z-index: 0;
  opacity: .11;
  background:
    radial-gradient(circle at 18% 40%, var(--accent-gold) 0 1.2px, transparent 1.8px),
    radial-gradient(circle at 72% 28%, var(--accent-copper) 0 1px, transparent 1.6px),
    radial-gradient(circle at 58% 68%, var(--accent-burgundy) 0 1.4px, transparent 2px);
  background-size: 140px 100px, 190px 130px, 160px 110px;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.cite-motif::after {
  content: "";
  position: absolute;
  inset: 20% 8% 30%;
  border: 1px solid color-mix(in srgb, var(--accent-copper) 35%, transparent);
  border-radius: 40% 60% 55% 45% / 50% 40% 60% 50%;
  opacity: .35;
  transform: rotate(-4deg);
}
.cite-motif-alt { inset: auto 0 6%; transform: scaleX(-1); }

.split {
  display: grid;
  gap: clamp(2.5rem, 5vw, 5.5rem);
  align-items: center;
}
@media (min-width: 1024px) {
  .split-58 { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); }
  .split-42 { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); }
  .split-60 { grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); }
  .split-meet {
    grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr);
    gap: clamp(3rem, 6vw, 6rem);
    align-items: center;
  }
  .trust-grid { grid-template-columns: 1fr 1fr; }
}

#meet .chapter h2,
.meet-copy h2 {
  font-size: clamp(2.8rem, 4vw, 4.5rem);
  max-width: 14ch;
}
.meet-lede {
  color: var(--ivory-muted);
  max-width: 34rem;
  font-size: 1.08rem;
  line-height: 1.72;
  margin: 0;
}

.art-frame {
  border-radius: 0;
  overflow: visible;
  border: 0;
  background: transparent;
  max-width: 100%;
  box-shadow: none;
  transition: transform .25s ease;
}
.art-frame:hover {
  transform: translateY(-3px) scale(1.01);
  border-color: transparent;
  box-shadow: none;
}
.art-frame button { display: block; width: 100%; padding: 0; border: 0; background: transparent; cursor: zoom-in; }
.art-frame img {
  display: block;
  width: 100%;
  height: auto;
  background: transparent;
}
.art-frame-paper {
  border-radius: 10px;
  overflow: hidden;
  background: var(--paper-alt);
  border: 1px solid #E4D8C8;
  box-shadow: 0 18px 40px rgba(0,0,0,.08);
}
.art-frame-paper:hover {
  border-color: #E4D8C8;
  box-shadow: 0 22px 44px rgba(0,0,0,.1);
}

.app-window {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #14110F;
  box-shadow:
    0 28px 60px rgba(0,0,0,.5),
    0 0 0 1px color-mix(in srgb, var(--accent-burgundy) 18%, transparent);
}
.app-window-showcase {
  border-radius: 11px;
  width: 100%;
  max-width: 760px;
  justify-self: end;
  box-shadow:
    0 32px 70px rgba(0,0,0,.55),
    0 0 0 1px color-mix(in srgb, var(--accent-copper) 22%, transparent),
    0 0 40px color-mix(in srgb, var(--accent-burgundy) 12%, transparent);
}
@media (min-width: 1100px) {
  .app-window-showcase {
    margin-inline-end: 0;
    transform: none;
  }
}
.app-window .chrome {
  display: flex; gap: 6px; align-items: center;
  padding: 11px 14px;
  background: linear-gradient(180deg, #1C1714, #151210);
  border-bottom: 1px solid var(--line);
}
.app-window .chrome i {
  width: 9px; height: 9px; border-radius: 50%;
  background: #4A3F38;
  display: block;
}
.app-window .chrome i:first-child { background: var(--accent-burgundy); }
.app-window button { display: block; width: 100%; border: 0; padding: 0; background: transparent; cursor: zoom-in; }
.app-window img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.trust-grid {
  display: grid;
  gap: 1.1rem;
}
.trust-heading {
  max-width: 16ch;
  margin-bottom: 2.15rem;
}
.panel-research, .panel-tech {
  padding: 1.45rem 1.55rem;
}
.panel-tech {
  grid-column: 1 / -1;
  border-radius: 6px;
  border-inline-start: 3px solid var(--accent-copper);
}
.panel-copy {
  color: var(--ivory-muted);
  margin: 0;
  font-size: .95rem;
  line-height: 1.65;
}

.reviews-head { margin-bottom: 1.75rem; }
.quote-tile {
  flex: 0 0 auto;
  width: min(320px, 78vw);
  padding: 1.35rem 1.4rem;
  background: var(--surface-elevated);
  border: 1px solid color-mix(in srgb, var(--accent-copper) 25%, transparent);
  border-radius: 6px;
}
.quote-tile.wide { width: min(420px, 85vw); }
.quote-tile.accent {
  border-inline-start: 3px solid var(--accent-burgundy);
}
.quote-tile p {
  margin: 0 0 .85rem;
  line-height: 1.65;
  font-family: var(--font-display);
  font-size: 1.12rem;
  color: var(--ivory);
}
.quote-tile footer {
  font-size: .8rem;
  color: var(--slate-warm);
  font-family: var(--font-body);
}

.faq-preview-wrap { max-width: 48rem; }
.faq-acc { margin-top: 1.6rem; }
.faq-more { margin-top: 1.85rem; }
.acc-btn span {
  color: var(--accent-copper);
  font-size: 1.25rem;
  line-height: 1;
}

.final-cta {
  position: relative;
  overflow: hidden;
  text-align: center;
  background:
    radial-gradient(ellipse 70% 55% at 50% 0%, rgba(26, 16, 18, 0.9), transparent 70%),
    linear-gradient(180deg, #151110 0%, #0B0909 100%);
  padding: clamp(5rem, 10vw, 8rem) 0;
}
.final-cta-glow {
  position: absolute;
  inset: 20% 20% 10%;
  pointer-events: none;
  background: radial-gradient(circle at 50% 40%, rgba(196, 126, 82, 0.08), transparent 65%);
}
.dust-cta { z-index: 1; opacity: .7; }
.final-cta-inner {
  position: relative;
  z-index: 2;
  max-width: 42rem;
}
.final-cta .rule-gold { margin-inline: auto; }
.final-cta h2 {
  max-width: 16ch;
  margin-inline: auto;
  font-size: clamp(2.6rem, 4vw, 4.2rem);
}
.final-cta .section-copy {
  margin-inline: auto;
  max-width: 36rem;
}
.final-cta-action { margin-top: 1.75rem; }

.site-colophon {
  background: linear-gradient(180deg, #100D0D 0%, #0B0909 100%);
  border-top: 1px solid color-mix(in srgb, var(--accent-copper) 22%, var(--line));
  padding: 3.4rem 0 2.25rem;
  font-size: .92rem;
  color: var(--slate-warm);
}
.colophon-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.colophon-brand {
  display: flex;
  align-items: center;
  gap: .55rem;
  margin-bottom: .65rem;
  color: var(--ivory);
}
.colophon-brand img { border-radius: 6px; }
.colophon-brand .type-display { font-size: 1.25rem; }
.colophon-label {
  color: var(--accent-gold);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin: 0 0 .65rem;
}
.colophon-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: .4rem;
}
.colophon-links a {
  color: var(--ivory);
  text-decoration: none;
}
.colophon-links a:hover { color: var(--accent-gold); }
.colophon-blurb { margin: 0; font-size: .88rem; line-height: 1.65; }
.colophon-legal { margin-top: 2.1rem; font-size: .82rem; }

/* Tables / FAQ / reviews (shared) */
.sheet { width: 100%; border-collapse: collapse; font-size: .93rem; }
.sheet th, .sheet td {
  padding: .9rem 1.05rem; text-align: start;
  border-bottom: 1px solid var(--line);
}
.sheet th {
  color: var(--accent-gold);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.sheet tbody tr { transition: background .15s ease; }
.sheet tbody tr:hover {
  background: color-mix(in srgb, var(--accent-burgundy) 12%, transparent);
}

.marquee-wrap { overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent); }
.marquee-track {
  display: flex; gap: 1.15rem; width: max-content;
  animation: marquee 55s linear infinite;
}
.marquee-wrap:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

[data-accordion] [data-acc-item] {
  border-bottom: 0;
}
/* Match index .sep-nodes between FAQ rows */
[data-accordion] [data-acc-item]:not(:last-child)::after {
  content: "";
  display: block;
  height: 14px;
  margin: .2rem 0 .45rem;
  opacity: .55;
  background:
    radial-gradient(circle at center, transparent 2px, color-mix(in srgb, var(--accent-copper) 28%, transparent) 2.5px, color-mix(in srgb, var(--accent-copper) 28%, transparent) 5px, transparent 5.5px) center / 14px 14px no-repeat,
    linear-gradient(var(--accent-copper), var(--accent-copper)) center / 7px 7px no-repeat,
    linear-gradient(90deg, transparent, var(--accent-burgundy), var(--accent-gold), transparent) center / 100% 1px no-repeat;
}
.acc-btn {
  width: 100%; text-align: start; background: transparent; border: 0;
  color: var(--ivory); padding: 1.2rem 0; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  font-family: var(--font-body); font-size: 1.05rem; font-weight: 550;
}
.acc-panel { padding: 0 0 1.2rem; color: var(--ivory-muted); line-height: 1.7; }

.timeline { border-inline-start: 2px solid var(--line); margin-inline-start: .4rem; padding-inline-start: 1.5rem; }
.timeline-item { position: relative; padding-bottom: 1.75rem; }
.timeline-item::before {
  content: "";
  position: absolute;
  inset-inline-start: -1.72rem;
  top: .4rem;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent-burgundy);
  box-shadow: 0 0 0 3px var(--ink-char), 0 0 12px color-mix(in srgb, var(--accent-gold) 35%, transparent);
}

.float-dl {
  position: fixed;
  inset-inline-end: 1.15rem;
  bottom: 1.15rem;
  z-index: 40;
  font-size: .82rem !important;
  padding: .55rem .9rem !important;
  min-height: 0 !important;
}

#media-stage {
  position: fixed; inset: 0; z-index: 80; display: none;
  align-items: center; justify-content: center;
  background: rgba(6,5,4,.92); padding: 1.5rem;
}
#media-stage.is-open { display: flex; }
#media-stage img {
  max-width: min(1200px, 94vw); max-height: 88vh;
  border-radius: 6px; border: 1px solid var(--line);
}
#media-stage-close {
  position: absolute; top: 1rem; inset-inline-end: 1rem;
  width: 44px; height: 44px; border: 1px solid var(--line);
  background: var(--ink-espresso); color: var(--ivory);
  border-radius: 6px; font-size: 1.4rem; cursor: pointer;
}

.lang-switch { position: relative; }
.lang-switch-btn {
  display: inline-flex; align-items: center; gap: .3rem;
  background: transparent; color: var(--ivory-muted);
  border: 1px solid var(--line); border-radius: 6px;
  padding: .3rem .5rem; font-size: .74rem; font-weight: 650;
  font-family: var(--font-body); cursor: pointer;
  line-height: 1.2;
}
.lang-switch-menu {
  position: absolute; top: calc(100% + 6px); inset-inline-end: 0; z-index: 70;
  min-width: 10.5rem; margin: 0; padding: .35rem; list-style: none;
  background: var(--ink-espresso); border: 1px solid var(--line); border-radius: 8px;
  box-shadow: 0 12px 32px rgba(0,0,0,.45);
}
.lang-switch-menu[hidden] { display: none !important; }
.lang-switch-menu a {
  display: block; padding: .55rem .7rem; border-radius: 6px;
  color: var(--ivory); text-decoration: none; font-size: .85rem;
}
.lang-switch-menu a:hover,
.lang-switch-menu a[aria-current="true"] {
  background: color-mix(in srgb, var(--accent-burgundy) 22%, transparent);
}

html[lang="zh-CN"] .rail-link { letter-spacing: .08em; }
html[lang="ru"] .act-primary { padding-inline: 1.55rem; }

body.nav-open { overflow: hidden; }

/* Shared inner-page patterns (match home editorial system) */
.page-hero {
  padding: clamp(3.5rem, 8vw, 5.5rem) 0 2rem;
}
.page-hero h1,
.page-hero .type-display {
  font-size: clamp(2.6rem, 5vw, 4.4rem);
  line-height: 1.08;
  margin: 0 0 1.15rem;
  max-width: 16ch;
  color: var(--ivory);
}
.page-hero .lede,
.page-hero-lede {
  color: var(--ivory-muted);
  margin: 0;
  max-width: 40rem;
  font-size: 1.05rem;
  line-height: 1.7;
}
.page-hero .wrap-prose[style*="text-align:center"] .type-display,
.page-hero .wrap-prose[style*="text-align:center"] h1 {
  margin-inline: auto;
}
.page-hero .wrap-prose[style*="text-align:center"] .page-hero-lede {
  margin-inline: auto;
}
.feat-type-hero { padding: clamp(3.5rem, 8vw, 5.5rem) 0 2rem; }
.feat-type-hero h1 {
  font-size: clamp(2.6rem, 5vw, 4.4rem);
  line-height: 1.08;
  max-width: 14ch;
  margin: 0 0 1.15rem;
}
.feat-toc-strip {
  position: sticky;
  top: var(--banner-h);
  z-index: 40;
  background: color-mix(in srgb, var(--ink-char) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.feat-toc {
  display: flex;
  gap: 0;
  overflow-x: auto;
  list-style: none;
  margin: 0;
  padding: 0;
  scrollbar-width: thin;
}
.feat-toc a {
  display: block;
  flex: 0 0 auto;
  padding: .7rem .95rem;
  font-size: .8rem;
  font-weight: 500;
  color: var(--ivory-muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.feat-toc a:hover,
.feat-toc a.is-active {
  color: var(--ivory);
  border-bottom-color: var(--accent-burgundy);
}

/* Inner pages: centered editorial composition (features + siblings) */
.page-center .feat-type-hero,
.page-center .feat-type-hero .wrap,
.page-center .page-hero,
.page-center .page-hero .wrap,
.page-center main .chapter > .wrap,
.page-center main article.chapter > .wrap {
  text-align: center;
}
.page-center .feat-type-hero h1,
.page-center .feat-type-hero .type-display,
.page-center .page-hero h1,
.page-center .page-hero .type-display,
.page-center .page-hero-lede,
.page-center main .chapter h2,
.page-center main .chapter h3,
.page-center main article.chapter h2,
.page-center main article.chapter h3,
.page-center main .chapter .section-copy,
.page-center main .chapter p,
.page-center main article.chapter p {
  margin-inline: auto;
}
.page-center .feat-type-hero h1,
.page-center .feat-type-hero .type-display,
.page-center .page-hero h1,
.page-center .page-hero .type-display {
  max-width: 18ch;
}
.page-center .page-hero-lede {
  max-width: 40rem;
}
.page-center .rule-gold {
  margin-inline: auto;
}
.page-center .feat-toc {
  justify-content: center;
}
.page-center main .chapter > .wrap.split,
.page-center main article.chapter > .wrap.split {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
  max-width: min(100% - (var(--gutter) * 2), 52rem);
}
.page-center main .chapter > .wrap.split > *,
.page-center main article.chapter > .wrap.split > * {
  width: 100%;
  max-width: 44rem;
}
.page-center main .chapter ul,
.page-center main article.chapter ul {
  list-style-position: inside;
  padding-inline-start: 0;
  text-align: center;
  margin-inline: auto;
  max-width: 40rem;
}
.page-center main .chapter .surface-a,
.page-center main .chapter .surface-b,
.page-center main .chapter .surface-c,
.page-center main .chapter .surface-d,
.page-center main article.chapter .surface-a,
.page-center main article.chapter .surface-b,
.page-center main article.chapter .surface-c,
.page-center main article.chapter .surface-d {
  text-align: start;
  max-width: 44rem;
  margin-inline: auto;
  width: 100%;
}
.page-center main .chapter .sheet,
.page-center main article.chapter .sheet {
  text-align: start;
}
.page-center #specs .wrap,
.page-center #reader .wrap {
  max-width: min(100% - (var(--gutter) * 2), 48rem);
  margin-inline: auto;
}
.page-center main .chapter .act-ghost,
.page-center main .chapter .act-primary,
.page-center main article.chapter .act-ghost,
.page-center main article.chapter .act-primary {
  margin-inline: auto;
}
.page-center .dl-grid {
  justify-items: center;
  max-width: min(100% - (var(--gutter) * 2), 52rem);
  margin-inline: auto;
}
.page-center .dl-grid > * {
  width: 100%;
  max-width: 44rem;
}
.page-center .release-card {
  grid-column: auto;
}
.page-center .guide-toc {
  text-align: start;
  max-width: 40rem;
  margin-inline: auto;
}
.page-center .guide-step {
  text-align: start;
  max-width: 40rem;
  margin-inline: auto;
}
.page-center .timeline {
  text-align: start;
  max-width: 40rem;
  margin-inline: auto;
}
.page-center [data-accordion] {
  text-align: start;
  max-width: 44rem;
  margin-inline: auto;
}
.page-center .acc-btn {
  text-align: start;
}

/* Trust: node splitters align to content column, sit in the gap (no overlap) */
.page-trust main > .sep-nodes {
  width: min(100% - (var(--gutter) * 2), 40rem);
  margin-inline: auto;
  margin-block: .35rem;
  position: relative;
  z-index: 2;
}
.page-trust main > .chapter {
  padding-block: clamp(2.75rem, 5vw, 4rem);
}
.page-trust main > .page-hero {
  padding-bottom: clamp(2.25rem, 4vw, 3.25rem);
}
.page-trust main > .sep-nodes + .chapter {
  padding-top: clamp(2.25rem, 4vw, 3.25rem);
}

/* Download page: compact, not a tall single-column slog */
.page-download main .chapter {
  padding: clamp(2.25rem, 4vw, 3.4rem) 0;
}
.page-download .download-hero {
  padding-top: clamp(2.5rem, 5vw, 3.75rem);
  padding-bottom: clamp(2rem, 3.5vw, 2.75rem);
}
.page-download .download-stack {
  width: min(100% - (var(--gutter) * 2), 52rem);
  margin-inline: auto;
  display: grid;
  gap: 1.25rem;
  text-align: center;
}
.page-download .download-intro .rule-gold {
  margin-inline: auto;
}
.page-download .download-intro .type-display {
  font-size: clamp(2.4rem, 4.5vw, 3.6rem);
  max-width: 14ch;
  margin-inline: auto;
}
.page-download .download-intro .page-hero-lede {
  max-width: 36rem;
  margin-inline: auto;
  font-size: 1rem;
}
.page-download .release-card {
  text-align: start;
  padding: 1.25rem 1.35rem;
  max-width: none;
  width: 100%;
  grid-column: auto;
}
.page-download .release-card .rule-gold {
  margin-inline: 0;
}
.page-download .release-title {
  font-size: clamp(1.55rem, 2.5vw, 2rem);
  max-width: none;
  margin: 0 0 .85rem;
}
.page-download .release-meta {
  margin: .85rem 0 1rem;
  gap: .75rem;
}
.page-download .release-meta dd {
  font-size: 1rem;
}
.page-download .release-filename {
  font-size: .92rem !important;
  word-break: break-all;
}
.page-download .release-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
}
.page-download .release-actions .act-primary,
.page-download .release-actions .act-ghost,
.page-download .dl-grid-platforms .act-ghost,
.page-download .integrity-note .act-ghost {
  margin-inline: 0;
}
.page-download .release-note {
  color: var(--slate-warm);
  font-size: .82rem;
  margin: .85rem 0 0;
}
.page-download .dl-grid-platforms {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .85rem;
  max-width: none;
  width: 100%;
  justify-items: stretch;
  margin: 0;
}
.page-download .dl-grid-platforms > * {
  max-width: none;
  text-align: start;
}
.page-download .dl-grid-platforms .panel-copy {
  margin: 0 0 .85rem;
  font-size: .92rem;
}
.page-download .download-narrow {
  width: min(100% - (var(--gutter) * 2), 48rem);
  margin-inline: auto;
  text-align: center;
}
.page-download .download-narrow .rule-gold {
  margin-inline: auto;
}
.page-download .download-narrow h2 {
  font-size: clamp(1.85rem, 3vw, 2.6rem);
  max-width: 16ch;
  margin-inline: auto;
  margin-bottom: .85rem;
}
.page-download .download-narrow .section-copy,
.page-download .download-narrow .panel-copy {
  max-width: 40rem;
  margin-inline: auto;
  margin-bottom: .85rem;
}
.page-download .sheet-wrap {
  overflow-x: auto;
  margin-top: 1rem;
  text-align: start;
}
.page-download .sheet {
  min-width: 520px;
}
.page-download .timeline {
  margin-top: 1.15rem;
  text-align: start;
  max-width: none;
}
.page-download .timeline-item {
  padding-bottom: 1.15rem;
}
.page-download .download-list {
  color: var(--ivory-muted);
  font-size: .93rem;
  padding-inline-start: 1.15rem;
  margin: 0;
  text-align: start;
  list-style-position: outside;
  max-width: none;
}
.page-download .integrity-note {
  margin-top: 1rem;
  text-align: start;
  max-width: none;
}
.page-download .integrity-note .panel-copy {
  margin-bottom: 1rem;
}
@media (max-width: 800px) {
  .page-download .dl-grid-platforms {
    grid-template-columns: 1fr;
  }
}

.dl-grid {
  display: grid;
  gap: 1.15rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: start;
}
.release-card {
  padding: 1.45rem 1.55rem;
  grid-column: 1 / -1;
  max-width: 100%;
}
.release-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin: 1.35rem 0;
  font-size: .95rem;
}
.release-meta dt {
  color: var(--slate-warm);
  font-size: .72rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.release-meta dd {
  margin: .2rem 0 0;
  font-size: 1.08rem;
}
.panel-pad { padding: 1.35rem 1.45rem; }

.shield-hero {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}
@media (min-width: 900px) {
  .shield-hero { grid-template-columns: 1.1fr .9fr; }
}
.guide-toc {
  display: grid;
  gap: .35rem;
}
.guide-toc a {
  color: var(--ivory);
  text-decoration: none;
  padding: .35rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  font-size: .92rem;
}
.guide-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  margin-bottom: 1.35rem;
}
.guide-step .n {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--accent-burgundy) 28%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-gold) 30%, transparent);
  color: var(--ivory);
  font-size: .85rem;
  font-weight: 650;
}

@media (max-width: 1023px) {
  .banner-mark strong { font-size: 1.15rem; }
  .rail-banner {
    display: flex;
    justify-content: space-between;
  }
  .banner-mark,
  .banner-actions {
    grid-column: auto;
    justify-self: auto;
  }
  .vault-hero {
    min-height: 82vh;
    background-position: 50% center;
    padding: 4.75rem 1.1rem 3.5rem;
  }
  .vault-hero h1 { font-size: clamp(3.4rem, 14vw, 4.6rem); }
  .vault-hero .lede { font-size: 1.05rem; }
  .act-hero { width: 100%; max-width: 22rem; }
  .hero-actions { width: 100%; justify-content: center; }
  .app-window-showcase { transform: none; margin: 0; }
  .meet-copy h2 br { display: none; }
  .chapter { padding: clamp(4.25rem, 12vw, 6rem) 0; }
  .dust i:nth-child(n+5) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .dust i, .marquee-track { animation: none !important; }
  .act-primary:hover, .act-ghost:hover, .art-frame:hover { transform: none; }
  .app-window-showcase { transform: none; }
}