/* ═══════════════════════════════════════════════
   ПАНТЕОН — мраморно-музейный редизайн
   ═══════════════════════════════════════════════ */

:root{
  /* marble & ink */
  --marble:    oklch(0.967 0.008 85);
  --marble-2:  oklch(0.945 0.010 82);
  --paper:     oklch(0.992 0.005 88);
  --ink:       oklch(0.235 0.010 75);
  --ink-soft:  oklch(0.430 0.012 78);
  --ink-faint: oklch(0.620 0.010 80);
  --line:      oklch(0.840 0.010 82);
  --line-soft: oklch(0.895 0.008 84);

  /* accent — античная бронза-золото */
  --gold:      oklch(0.605 0.090 72);
  --gold-deep: oklch(0.470 0.075 64);
  --gold-soft: oklch(0.760 0.060 78);

  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Golos Text', system-ui, -apple-system, sans-serif;

  --maxw: 1240px;
  --ease: cubic-bezier(.2,.7,.2,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
}

*{ margin:0; padding:0; box-sizing:border-box; }

html{ scroll-behavior:smooth; background: var(--marble); }

body{
  font-family: var(--font-sans);
  color: var(--ink);
  background: transparent;
  position: relative;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection{ background: var(--gold-soft); color: var(--ink); }

a{ color: inherit; text-decoration: none; }

/* ── background layers ───────────────────────── */
.bg-photo{ position: absolute; top: 0; left: 0; width: 100%; height: auto; z-index: -3; pointer-events: none; display: block;
  -webkit-mask: linear-gradient(180deg, #000 76%, transparent 99%);
          mask: linear-gradient(180deg, #000 76%, transparent 99%); }
.bg{ position: fixed; inset: 0; z-index: -2; pointer-events: none; background:
   radial-gradient(90% 55% at 55% -8%, oklch(0.98 0.03 88 / .45), transparent 60%),
   radial-gradient(120% 90% at 50% 115%, oklch(0.72 0.02 70 / .28), transparent 55%); }
.starfield{ position:absolute; inset:0; width:100%; height:100%; display:block; }
.marble{ position:absolute; inset:0; width:100%; height:100%; opacity:0; mix-blend-mode:multiply; }
.vignette{ position:absolute; inset:0;
  background: radial-gradient(130% 120% at 50% 40%, transparent 55%, oklch(0.90 0.012 78 / .5));
  box-shadow: inset 0 0 240px oklch(0.80 0.012 70 / .25); }

/* ── reusable type ───────────────────────────── */
.eyebrow{
  font-size: clamp(.68rem, .9vw, .78rem);
  font-weight: 600;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--gold-deep);
}
.section-head{ max-width: 760px; margin: 0 auto; text-align: center; padding: 0 28px; }
.section-title{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 5.2vw, 4rem);
  line-height: 1.02;
  letter-spacing: -.015em;
  margin: .5em 0 .42em;
}
.section-lead{
  font-size: clamp(1rem, 1.4vw, 1.18rem);
  color: var(--ink-soft);
  max-width: 56ch; margin: 0 auto;
  text-wrap: pretty;
}

/* ── buttons ─────────────────────────────────── */
.btn{
  --pad: .72em 1.25em;
  display: inline-flex; align-items: center; gap: .55em;
  padding: var(--pad);
  font-family: var(--font-sans);
  font-size: .92rem; font-weight: 600;
  letter-spacing: .01em;
  border-radius: 2px;
  cursor: pointer; border: 1px solid transparent;
  transition: background .4s var(--ease), color .4s var(--ease),
              border-color .4s var(--ease), transform .25s var(--ease), box-shadow .4s var(--ease);
  will-change: transform;
}
.btn .arr{ transition: transform .35s var(--ease-out); }
.btn:hover .arr{ transform: translateX(4px); }
.btn-lg{ font-size: 1rem; padding: .95em 1.6em; }

.btn-solid{ background: var(--ink); color: var(--paper); }
.btn-solid:hover{ background: var(--gold-deep); box-shadow: 0 10px 30px oklch(0.47 0.075 64 / .28); }

.btn-ghost{ background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover{ border-color: var(--ink); background: oklch(0.99 0.005 88 / .6); }

/* ── nav ─────────────────────────────────────── */
.nav{
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px clamp(20px, 4vw, 52px);
  transition: padding .5s var(--ease), background .5s var(--ease), box-shadow .5s var(--ease), border-color .5s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled{
  padding: 13px clamp(20px, 4vw, 52px);
  background: oklch(0.967 0.008 85 / .72);
  backdrop-filter: blur(14px) saturate(1.1);
  border-bottom: 1px solid var(--line-soft);
}
.brand{ display: inline-flex; align-items: baseline; gap: .5em; }
.brand-mark{
  font-family: var(--font-display); font-weight: 700;
  font-size: 1.4rem; color: var(--gold-deep);
  line-height: 1;
}
.brand-name{ font-weight: 700; letter-spacing: .02em; font-size: 1.02rem; }

.nav-links{ display: flex; align-items: center; gap: clamp(14px, 2.4vw, 34px); }
.nav-link{
  font-weight: 500; font-size: .92rem; color: var(--ink-soft);
  position: relative; padding: 4px 0;
  transition: color .3s var(--ease);
}
.nav-link::after{
  content:''; position:absolute; left:0; bottom:-1px; height:1.5px; width:100%;
  background: var(--gold-deep); transform: scaleX(0); transform-origin: left;
  transition: transform .4s var(--ease-out);
}
.nav-link:hover{ color: var(--ink); }
.nav-link:hover::after, .nav-link.is-active::after{ transform: scaleX(1); }
.nav-link.is-active{ color: var(--ink); }
@media (max-width: 720px){ .nav-link:not(.btn){ display:none; } }

/* ── hero ────────────────────────────────────── */
.hero{
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 120px 24px 90px;
}
.hero-frame{
  position: absolute; inset: clamp(18px, 3vw, 40px);
  border: 1px solid var(--line);
  pointer-events: none;
  -webkit-mask: linear-gradient(180deg, transparent, #000 8% 92%, transparent);
          mask: linear-gradient(180deg, transparent, #000 8% 92%, transparent);
  opacity: 0; animation: frameIn 1.6s var(--ease-out) .3s forwards;
}
@keyframes frameIn{ from{ opacity:0; transform: scale(1.015);} to{ opacity:1; transform:none; } }

.hero-inner{ position: relative; max-width: 880px; z-index: 2; }

.hero-title{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(4rem, 17vw, 14rem);
  line-height: .9;
  letter-spacing: clamp(.01em, .4vw, .06em);
  margin: .14em 0 .04em;
  display: flex; justify-content: center; flex-wrap: nowrap;
}
.hero-title .ch{
  display: inline-block;
  position: relative;
  transform: translateY(120%) rotate(6deg);
  opacity: 0;
  background: linear-gradient(180deg, var(--ink), oklch(0.34 0.012 72));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-title.in .ch{ animation: chRise 1.05s var(--ease-out) forwards; }
@keyframes chRise{ to{ transform:none; opacity:1; } }

.hero-sub{
  font-family: var(--font-display);
  font-style: italic; font-weight: 500;
  font-size: clamp(1.3rem, 3.4vw, 2.3rem);
  color: var(--gold-deep);
  letter-spacing: .01em;
}
.hero-lead{
  margin: 1.5em auto 0; max-width: 50ch;
  font-size: clamp(1rem, 1.4vw, 1.16rem);
  color: var(--ink-soft); text-wrap: pretty;
}
.hero-cta{ display: flex; gap: 14px; justify-content: center; margin-top: 2.3em; flex-wrap: wrap; }

.scroll-cue{
  position: absolute; bottom: clamp(24px, 5vh, 54px); left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 12px; z-index: 2;
}
.scroll-cue-label{
  font-size: .68rem; letter-spacing: .32em; text-transform: uppercase; color: var(--ink-faint);
}
.scroll-cue-line{ width: 1px; height: 46px; background: linear-gradient(var(--gold-deep), transparent); position: relative; overflow: hidden; }
.scroll-cue-line::after{ content:''; position:absolute; top:-40%; left:0; width:100%; height:40%; background: var(--gold); animation: cueRun 2.2s var(--ease) infinite; }
@keyframes cueRun{ 0%{ top:-40%; } 70%,100%{ top:100%; } }

/* ── reveal ──────────────────────────────────── */
[data-reveal]{ opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease-out), transform .9s var(--ease-out); }
[data-reveal].in{ opacity: 1; transform: none; }

/* ═══ CONSTELLATION ═══════════════════════════ */
.constellation{ position: relative; padding: clamp(90px, 13vh, 170px) 0 clamp(70px, 9vh, 120px); }
.sky{
  position: relative; width: min(1180px, 92vw); margin: clamp(36px, 6vh, 80px) auto 0;
  aspect-ratio: 100 / 62;
  cursor: none;
}
.sky-lines, .sky-cursor{ position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.sky-lines line{
  stroke: oklch(0.60 0.014 78 / .5); stroke-width: .16; stroke-linecap: round;
  stroke-dasharray: var(--len); stroke-dashoffset: var(--len);
  transition: stroke .5s var(--ease), stroke-width .5s var(--ease), opacity .5s var(--ease);
}
.sky.drawn .sky-lines line{ animation: drawLine 1.4s var(--ease-out) forwards; animation-delay: var(--ld, 0s); }
@keyframes drawLine{ to{ stroke-dashoffset: 0; } }
.sky-lines line.hot{ stroke: var(--gold); stroke-width: .34; }
.sky-cursor line{ stroke: var(--gold); stroke-width: .12; stroke-linecap: round; opacity: .6; }

.nodes{ position: absolute; inset: 0; }
.node{
  position: absolute; transform: translate(-50%,-50%);
  width: 0; height: 0;
  display: grid; place-items: center;
  cursor: none;
}
.node-dot{
  --d: 14px;
  width: var(--d); height: var(--d); border-radius: 50%;
  margin-left: calc(var(--d) / -2);
  margin-top: calc(var(--d) / -2);
  background: radial-gradient(circle at 35% 35%, var(--paper), var(--ink-soft) 75%);
  box-shadow: 0 0 0 1px oklch(0.30 0.012 72 / .25), 0 2px 8px oklch(0.30 0.01 72 / .22);
  position: relative;
  transition: transform .45s var(--ease-out), box-shadow .45s var(--ease);
}
.node-dot::before{
  content:''; position:absolute; inset:-9px; border-radius:50%;
  border: 1px solid var(--gold); opacity: 0; transform: scale(.6);
  transition: opacity .45s var(--ease), transform .45s var(--ease-out);
}
.node-letter{
  position: absolute; left: 50%; top: -13px;
  transform: translate(-50%, -100%);
  font-family: var(--font-display); font-style: italic; font-weight: 500;
  font-size: 15px; color: var(--gold-deep);
  pointer-events: none; opacity: 0;
  transition: opacity .4s var(--ease), color .4s var(--ease);
}
.node-name{
  position: absolute; top: calc(50% + 16px); left: 50%; transform: translateX(-50%);
  font-size: 11px; letter-spacing: .16em; text-transform: uppercase; font-weight: 600;
  color: var(--ink-faint); white-space: nowrap; pointer-events: none;
  opacity: 0; transition: opacity .4s var(--ease), transform .4s var(--ease-out);
}
/* twinkle */
.node.twinkle .node-dot{ animation: twinkle var(--tw, 4s) var(--ease) infinite alternate; }
@keyframes twinkle{ from{ box-shadow: 0 0 0 1px oklch(0.30 0.012 72 / .22), 0 2px 8px oklch(0.30 0.01 72 / .18); }
  to{ box-shadow: 0 0 0 1px oklch(0.30 0.012 72 / .32), 0 0 14px oklch(0.70 0.06 78 / .5); } }

.node:hover .node-dot, .node.active .node-dot{ transform: scale(1.55); box-shadow: 0 0 0 1px var(--gold-deep), 0 0 26px oklch(0.65 0.09 75 / .7); }
.node:hover .node-dot::before, .node.active .node-dot::before{ opacity: 1; transform: scale(1); }
.node:hover .node-letter, .node.active .node-letter{ opacity: 1; color: var(--gold); }
.node:hover .node-name, .node.active .node-name{ opacity: 1; transform: translateX(-50%) translateY(2px); }
.sky.dim .node:not(:hover):not(.active) .node-dot{ opacity: .35; }

/* star card */
.star-card{
  position: absolute; z-index: 6; width: min(330px, 78vw);
  background: oklch(0.992 0.005 88 / .92);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px oklch(0.30 0.012 72 / .18);
  padding: 22px 24px; display: flex; gap: 16px;
  opacity: 0; transform: translateY(8px) scale(.98); pointer-events: none;
  transition: opacity .4s var(--ease), transform .4s var(--ease-out);
}
.star-card.show{ opacity: 1; transform: none; }
.star-card-letter{
  font-family: var(--font-display); font-style: italic; font-weight: 500;
  font-size: 2.4rem; color: var(--gold); line-height: 1; flex: none;
}
.star-card-greek{ font-family: var(--font-display); font-style: italic; color: var(--gold-deep); font-size: .92rem; }
.star-card-name{ font-family: var(--font-display); font-weight: 700; font-size: 1.5rem; line-height: 1.1; margin: .05em 0 .12em; }
.star-card-role{ font-size: .72rem; letter-spacing: .22em; text-transform: uppercase; color: var(--ink-faint); font-weight: 600; margin-bottom: .7em; }
.star-card-desc{ font-size: .92rem; color: var(--ink-soft); line-height: 1.5; text-wrap: pretty; }

.sky-hint{ text-align: center; margin-top: clamp(34px, 6vh, 64px); font-size: .82rem; letter-spacing: .04em; color: var(--ink-faint); }

/* reticle (stargazer cursor) */
.reticle{
  position: fixed; top: 0; left: 0; z-index: 80; width: 34px; height: 34px;
  margin: -17px 0 0 -17px; pointer-events: none; opacity: 0;
  transition: opacity .35s var(--ease), width .3s var(--ease), height .3s var(--ease);
  mix-blend-mode: multiply;
}
.reticle.on{ opacity: 1; }
.reticle::before, .reticle::after{ content:''; position:absolute; background: var(--gold-deep); }
.reticle::before{ left:50%; top:0; width:1px; height:100%; transform: translateX(-50%); }
.reticle::after{ top:50%; left:0; height:1px; width:100%; transform: translateY(-50%); }
.reticle span{ position:absolute; inset:8px; border:1px solid var(--gold-deep); border-radius:50%; }

/* ═══ CHAPTERS (museum index) ═════════════════ */
.chapters{ position: relative; isolation: isolate; padding: clamp(80px, 11vh, 150px) clamp(20px, 4vw, 52px) clamp(70px, 10vh, 130px); max-width: var(--maxw); margin: 0 auto; }
.chapters::before{
  content:''; position: absolute; inset: 0 -4%;
  background: radial-gradient(115% 100% at 50% 45%, oklch(0.972 0.008 85 / .9), oklch(0.972 0.008 85 / .68) 62%, oklch(0.972 0.008 85 / 0) 100%);
  -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
  z-index: -1; pointer-events: none;
}
.index-grid{
  margin-top: clamp(44px, 7vh, 84px);
  display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: clamp(28px, 3vw, 48px) clamp(34px, 4vw, 64px);
}
.group{ }
.group-head{
  display: flex; align-items: baseline; gap: 14px;
  padding-bottom: 14px; margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
}
.group-roman{ font-family: var(--font-display); font-style: italic; font-size: 1.5rem; color: var(--gold); line-height: 1; }
.group-title{ font-size: .76rem; letter-spacing: .26em; text-transform: uppercase; font-weight: 700; color: var(--ink-soft); }

.chap{
  display: flex; align-items: baseline; gap: 16px;
  padding: 16px 8px 16px 4px; position: relative;
  border-bottom: 1px solid var(--line-soft);
  transition: padding-left .45s var(--ease-out), color .3s var(--ease);
  overflow: hidden;
}
.chap::before{
  content:''; position: absolute; left: -4px; top: 0; bottom: 0; width: 2px;
  background: var(--gold); transform: scaleY(0); transform-origin: top;
  transition: transform .45s var(--ease-out);
}
.chap-fill{
  content:''; position:absolute; inset:0; z-index:-1;
  background: linear-gradient(90deg, oklch(0.95 0.02 80 / .8), transparent 80%);
  transform: translateX(-101%); transition: transform .55s var(--ease-out);
}
.chap:hover{ padding-left: 18px; }
.chap:hover::before{ transform: scaleY(1); }
.chap:hover .chap-fill{ transform: none; }
.chap-n{ font-family: var(--font-display); font-style: italic; font-size: 1.02rem; color: var(--ink-faint); flex: none; width: 1.8em; transition: color .35s var(--ease); }
.chap:hover .chap-n{ color: var(--gold-deep); }
.chap-title{ font-size: 1.04rem; font-weight: 500; flex: 1; transition: color .3s var(--ease); }
.chap:hover .chap-title{ color: var(--ink); }
.chap-arr{ opacity: 0; transform: translateX(-8px); color: var(--gold-deep); transition: opacity .35s var(--ease), transform .35s var(--ease-out); font-size: 1.1rem; }
.chap:hover .chap-arr{ opacity: 1; transform: none; }
.chap.soon{ }
.chap.soon .chap-title::after{ content:'скоро'; font-size:.62rem; letter-spacing:.18em; text-transform:uppercase; color:var(--ink-faint); border:1px solid var(--line); padding:2px 7px; margin-left:10px; border-radius:2px; vertical-align: middle; }
.chap.soon{ pointer-events: none; opacity: .62; }

/* ── footer ──────────────────────────────────── */
.foot{ position: relative; padding: 0 clamp(20px, 4vw, 52px) 54px; max-width: var(--maxw); margin: 0 auto; }
.foot-rule{ height: 1px; background: var(--line); margin-bottom: 40px; }
.foot-row{ display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.foot-note{ color: var(--ink-soft); font-size: .92rem; max-width: 38ch; text-wrap: pretty; }
.foot-copy{ font-family: var(--font-display); font-style: italic; color: var(--ink-faint); letter-spacing: .04em; }

/* ── responsive ──────────────────────────────── */
@media (max-width: 760px){
  .sky{ cursor: auto; }
  .node-name{ font-size: 9px; }
  .star-card{ position: fixed !important; left: 50% !important; top: auto !important; bottom: 16px; transform: translateX(-50%); }
  .star-card.show{ transform: translateX(-50%); }
}

/* ── reduced motion ──────────────────────────── */
@media (prefers-reduced-motion: reduce){
  *{ animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .hero-title .ch{ transform: none; opacity: 1; }
  [data-reveal]{ opacity: 1; transform: none; }
  .sky-lines line{ stroke-dashoffset: 0 !important; }
}


/* ═══════════════ CHAPTER / DOC PAGES ═══════════════ */
.doc-page .nav{ background: oklch(0.967 0.008 85 / .85); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line-soft); }

.doc{ position: relative; max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: 258px minmax(0,1fr); gap: clamp(28px, 4vw, 64px);
  padding: 120px clamp(20px,4vw,52px) 90px; }

.doc-side{ position: sticky; top: 92px; align-self: start; max-height: calc(100vh - 116px); overflow-y: auto; padding-right: 6px; }
.doc-sec{ margin-bottom: 20px; }
.doc-sec-head{ display:flex; align-items:baseline; gap:8px; margin-bottom:9px; }
.doc-sec-roman{ font-family: var(--font-display); font-style: italic; color: var(--gold-deep); font-size:.9rem; }
.doc-sec-name{ font-size:.68rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color: var(--ink-faint); }
.doc-link{ display:flex; gap:10px; align-items:baseline; padding:6px 10px; border-radius:7px; color: var(--ink-soft); text-decoration:none; font-size:.9rem; transition: background .2s var(--ease), color .2s var(--ease); }
.doc-link .num{ font-family: var(--font-display); font-style:italic; color: var(--ink-faint); font-size:.82rem; min-width:20px; }
.doc-link:hover{ background: var(--line-soft); color: var(--ink); }
.doc-link.is-current{ background: var(--ink); color: var(--paper); }
.doc-link.is-current .num{ color: var(--gold-soft); }
.doc-link.is-soon{ opacity:.4; pointer-events:none; }

.doc-main{ min-width:0; max-width: 760px; }
.crumb{ display:flex; flex-wrap:wrap; gap:8px; align-items:center; font-size:.8rem; color: var(--ink-faint); margin-bottom: 24px; }
.crumb a{ color: var(--ink-soft); text-decoration:none; }
.crumb a:hover{ color: var(--gold-deep); }
.crumb .sep{ color: var(--gold-soft); }

.doc-main h1{ font-family: var(--font-display); font-weight:800; font-size: clamp(2.1rem, 4.6vw, 3.4rem); line-height:1.04; letter-spacing:-.01em; color: var(--ink); margin: 0 0 22px; }
.doc-main h2{ font-family: var(--font-display); font-weight:700; font-size: clamp(1.35rem, 2.6vw, 1.85rem); line-height:1.15; color: var(--ink); margin: 46px 0 14px; }
.doc-main p{ font-size: 1.04rem; line-height:1.72; color: var(--ink-soft); margin: 0 0 16px; }
.doc-main p.lead{ font-family: var(--font-display); font-size: clamp(1.18rem,1.9vw,1.42rem); font-weight:500; line-height:1.5; color: var(--ink); margin-bottom: 28px; }
.doc-main ul{ margin: 0 0 20px; padding: 0; list-style:none; }
.doc-main li{ position:relative; padding-left: 26px; margin-bottom: 12px; font-size:1.02rem; line-height:1.66; color: var(--ink-soft); }
.doc-main li::before{ content:''; position:absolute; left:5px; top:.62em; width:6px; height:6px; border:1px solid var(--gold); transform: rotate(45deg); }
.doc-main strong{ color: var(--ink); font-weight:600; }
.doc-main code{ font-family: ui-monospace, 'SF Mono', Menlo, monospace; font-size:.88em; background: var(--marble-2); border:1px solid var(--line-soft); padding:.1em .42em; border-radius:5px; color: var(--gold-deep); }
.doc-main a{ color: var(--gold-deep); text-decoration: underline; text-underline-offset: 3px; }
.doc-main a:hover{ color: var(--ink); }

.meander{ display:flex; justify-content:center; margin: 46px 0 6px; opacity:.75; }
.author{ margin: 34px 0 6px; padding: 26px 28px; background: var(--paper); border:1px solid var(--line-soft); border-left: 3px solid var(--gold); border-radius: 4px; }
.author-label{ font-size:.7rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color: var(--gold-deep); margin-bottom:12px; }
.author p{ font-size:.98rem; color: var(--ink-soft); line-height:1.7; margin:0; }

.page-nav{ display:flex; justify-content:space-between; gap:16px; margin-top: 54px; padding-top: 26px; border-top: 1px solid var(--line); }
.page-nav a{ display:flex; flex-direction:column; gap:4px; text-decoration:none; padding:14px 18px; border:1px solid var(--line-soft); border-radius:9px; max-width: 48%; transition: border-color .2s var(--ease), background .2s var(--ease); }
.page-nav a:hover{ border-color: var(--gold); background: var(--paper); }
.page-nav a.next{ text-align:right; align-items:flex-end; }
.page-nav .label{ font-size:.7rem; letter-spacing:.1em; text-transform:uppercase; color: var(--ink-faint); }
.page-nav .title{ font-family: var(--font-display); font-size:1.05rem; color: var(--ink); }

@media (max-width: 860px){
  .doc{ grid-template-columns: 1fr; padding-top: 96px; }
  .doc-side{ position: static; max-height:none; margin-bottom: 22px; border-bottom:1px solid var(--line-soft); padding-bottom: 16px; }
}