/* ==========================================================================
   わたラボ / WATALAB — site styles
   Aesthetic: 研究ノート（方眼紙）× やわらかいローズ。
   Light theme only, intentionally.
   ========================================================================== */

:root {
  color-scheme: light;

  /* ink */
  --ink:        #4e413a;
  --ink-soft:   #7a6a61;
  --ink-faint:  #a5968c;

  /* paper */
  --paper:      #fdfaf7;
  --paper-up:   #ffffff;
  --rule:       #e9ded7;
  --rule-soft:  #f1e8e2;

  /* accents (logo-derived) */
  --rose:       #e28a9d;
  --rose-deep:  #c1637b;
  --rose-ink:   #a34f66;
  --blush:      #f9e5ea;
  --peach:      #f3c7ab;

  /* type */
  --serif: "Shippori Mincho B1", "Hiragino Mincho ProN", serif;
  --sans:  "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, monospace;

  /* metrics */
  --shell: 1080px;
  --gut: clamp(1.25rem, 4vw, 3rem);
  --radius: 14px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.02rem);
  line-height: 1.95;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* --- 方眼紙 texture + warm glow ------------------------------------------ */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(to right,  rgba(226, 138, 157, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(226, 138, 157, 0.055) 1px, transparent 1px),
    linear-gradient(to right,  rgba(193, 99, 123, 0.075) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(193, 99, 123, 0.075) 1px, transparent 1px);
  background-size: 9px 9px, 9px 9px, 54px 54px, 54px 54px;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58rem 34rem at 78% -8%,  rgba(226, 138, 157, 0.20), transparent 65%),
    radial-gradient(44rem 30rem at 4% 6%,   rgba(243, 199, 171, 0.20), transparent 62%),
    linear-gradient(to bottom, rgba(253, 250, 247, 0.55), rgba(253, 250, 247, 0.9) 70%);
}

/* --- primitives ---------------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gut);
}

a { color: var(--rose-ink); text-decoration: none; }
a:hover { color: var(--rose-deep); }

.link-u {
  text-decoration: underline;
  text-decoration-color: rgba(226, 138, 157, 0.55);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.28em;
}
.link-u:hover { text-decoration-color: var(--rose-deep); }

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

.mono {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 500;
}

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 1rem; top: 1rem;
  z-index: 99;
  background: var(--paper-up);
  padding: 0.6rem 1rem;
  border: 1px solid var(--rose);
  border-radius: 8px;
}

/* --- header -------------------------------------------------------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px) saturate(1.1);
  background: rgba(253, 250, 247, 0.82);
  border-bottom: 1px solid var(--rule-soft);
}

.topbar__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
}
.brand img { width: 34px; height: 34px; display: block; }
.brand b {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.06rem;
  letter-spacing: 0.1em;
}
.brand span {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.24em;
  color: var(--ink-faint);
  padding-left: 0.1rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 2vw, 1.7rem);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}
.nav a { color: var(--ink-soft); white-space: nowrap; }
.nav a:hover { color: var(--rose-deep); }
.nav a[aria-current="page"] { color: var(--rose-deep); }
@media (max-width: 620px) {
  .nav .nav__opt { display: none; }
}

/* --- hero ---------------------------------------------------------------- */
.hero {
  position: relative;
  padding-block: clamp(3rem, 8vw, 6.5rem) clamp(2.5rem, 6vw, 4.5rem);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
@media (max-width: 800px) {
  .hero__grid { grid-template-columns: 1fr; }
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--rose-deep);
  margin-bottom: 1.4rem;
}
.eyebrow::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--rose), transparent);
}

h1 {
  position: relative;
  z-index: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2.9rem, 8vw, 4.4rem);
  line-height: 1.24;
  letter-spacing: 0.14em;
  margin: 0;
}

.romaji {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.42em;
  color: var(--ink-faint);
  margin: 1rem 0 0;
}

.tagline {
  position: relative;
  z-index: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.15rem, 3.2vw, 1.5rem);
  letter-spacing: 0.12em;
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 1.5rem 0 0;
}
.tagline em {
  position: relative;
  font-style: normal;
  color: var(--ink);
}
.tagline em::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: -0.08em;
  right: -0.08em;
  bottom: 0.06em;
  height: 0.32em;
  border-radius: 2px;
  background: linear-gradient(to right, var(--blush), rgba(243, 199, 171, 0.55));
}

.lead {
  margin: 1.7rem 0 0;
  font-size: 1.02rem;
  color: var(--ink-soft);
  max-width: 36em;
}
.lead strong { color: var(--ink); font-weight: 700; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.8rem;
  padding: 0.35rem 0.85rem 0.35rem 0.7rem;
  border: 1px solid rgba(226, 138, 157, 0.45);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--rose-ink);
}
.chip::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--rose);
  box-shadow: 0 0 0 3px rgba(226, 138, 157, 0.22);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 2.2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  border: 1px solid transparent;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
}
.btn--solid {
  background: var(--ink);
  color: var(--paper);
  box-shadow: 0 8px 20px -12px rgba(78, 65, 58, 0.7);
}
.btn--solid:hover {
  background: var(--rose-deep);
  color: #fff;
  transform: translateY(-2px);
}
.btn--ghost {
  border-color: var(--rule);
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.55);
}
.btn--ghost:hover {
  border-color: var(--rose);
  color: var(--rose-deep);
  transform: translateY(-2px);
}

/* emblem */
.emblem {
  position: relative;
  justify-self: center;
  width: min(360px, 78vw);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}
.emblem::before {
  content: "";
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  background: radial-gradient(circle at 42% 34%, #fff 0%, var(--blush) 58%, rgba(249, 229, 234, 0) 74%);
}
.emblem__ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px dashed rgba(226, 138, 157, 0.5);
  animation: spin 64s linear infinite;
}
.emblem__ring:nth-of-type(2) {
  inset: 9%;
  border-style: solid;
  border-color: rgba(243, 199, 171, 0.5);
  animation-duration: 44s;
  animation-direction: reverse;
}
.emblem img {
  position: relative;
  width: 74%;
  height: auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- section scaffolding ------------------------------------------------- */
.band { padding-block: clamp(2.75rem, 6vw, 4.5rem); }
.band + .band { border-top: 1px solid var(--rule-soft); }

.sec-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2rem;
}
.sec-head__no {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--rose);
  padding-top: 0.35rem;
}
.sec-head h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(1.35rem, 3.2vw, 1.75rem);
  letter-spacing: 0.09em;
  margin: 0;
  line-height: 1.5;
}
.sec-head p {
  margin: 0.4rem 0 0;
  font-size: 0.85rem;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

/* --- cards --------------------------------------------------------------- */
.note {
  background: var(--paper-up);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: clamp(1.4rem, 3.5vw, 2.2rem);
  box-shadow: 0 18px 40px -34px rgba(78, 65, 58, 0.45);
}
.note > :first-child { margin-top: 0; }
.note > :last-child { margin-bottom: 0; }

.note--about p {
  font-size: 1.02rem;
  line-height: 2.05;
  margin: 0;
}

/* 目的の3点（What / Who / Why） */
.qa {
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
}
.qa li {
  background: var(--paper-up);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 1.4rem 1.35rem;
  box-shadow: 0 18px 40px -36px rgba(78, 65, 58, 0.45);
}
.qa b {
  display: block;
  font-family: var(--mono);
  font-size: 0.63rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rose-deep);
  margin-bottom: 0.8rem;
}
.qa strong {
  display: block;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: 0.07em;
  margin-bottom: 0.5rem;
}
.qa p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

.note--about .note-sub {
  margin: 1.1rem 0 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.disclaimer {
  margin-top: 1.6rem;
  padding: 1.1rem 1.3rem;
  border-radius: 10px;
  background: linear-gradient(to right, var(--blush), rgba(249, 229, 234, 0.35));
  border-left: 3px solid var(--rose);
  font-size: 0.9rem;
  line-height: 1.9;
  color: var(--ink);
}
.disclaimer strong {
  display: block;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rose-ink);
  margin-bottom: 0.4rem;
}

.band-lead {
  max-width: 50em;
  margin: -0.5rem 0 1.9rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
}
.band-lead strong { color: var(--ink); font-weight: 700; }

.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
}

.tile {
  background: var(--paper-up);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 1.35rem 1.3rem;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.tile:hover {
  transform: translateY(-3px);
  border-color: rgba(226, 138, 157, 0.6);
  box-shadow: 0 20px 34px -28px rgba(163, 79, 102, 0.6);
}
.tile__ico {
  width: 34px; height: 34px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--blush);
  margin-bottom: 0.95rem;
}
.tile__ico svg { width: 18px; height: 18px; stroke: var(--rose-deep); fill: none; stroke-width: 1.6; }
.tile h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.08em;
  margin: 0 0 0.4rem;
}
.tile p {
  margin: 0;
  font-size: 0.83rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.tile .tile__scope {
  margin-top: 0.95rem;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--rule);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.02em;
  line-height: 1.6;
  color: var(--rose);
  word-break: break-all;
}

/* principles */
.rules {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--rule);
}
.rules li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.6rem 1rem;
  align-items: start;
  padding: 1.15rem 0.25rem;
  border-bottom: 1px solid var(--rule);
}
.rules span {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--rose);
  padding-top: 0.35rem;
}
.rules strong {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.06em;
}
.rules p {
  grid-column: 2;
  margin: 0.2rem 0 0;
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.85;
}
.scope-inline {
  font-family: var(--mono);
  font-size: 0.88em;
  letter-spacing: 0;
  color: var(--rose-ink);
  background: rgba(249, 229, 234, 0.75);
  border-radius: 4px;
  padding: 0.12em 0.4em;
}
@media (max-width: 520px) {
  .rules li { grid-template-columns: 1.8rem 1fr; }
}

/* operator table */
.facts {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(7.5rem, 10rem) 1fr;
  border-top: 1px solid var(--rule);
}
.facts dt,
.facts dd {
  margin: 0;
  padding: 1rem 0.25rem;
  border-bottom: 1px solid var(--rule);
}
.facts dt {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: 1.35rem;
}
.facts dd { font-size: 0.92rem; }
.facts dd small {
  display: block;
  color: var(--ink-faint);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}
@media (max-width: 560px) {
  .facts { grid-template-columns: 1fr; }
  .facts dt { border-bottom: 0; padding-bottom: 0; }
  .facts dd { padding-top: 0.25rem; }
}

/* --- footer -------------------------------------------------------------- */
.foot {
  margin-top: clamp(2rem, 6vw, 4rem);
  border-top: 1px solid var(--rule);
  background: rgba(255, 255, 255, 0.55);
  padding-block: 2.4rem;
}
.foot__in {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 1.6rem;
}
.foot nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  font-size: 0.82rem;
}
.foot nav a { color: var(--ink-soft); }
.foot nav a:hover { color: var(--rose-deep); }
.foot small {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
}

/* --- long-form document (privacy) --------------------------------------- */
.doc-hero {
  padding-block: clamp(2.75rem, 7vw, 4.5rem) 0;
}
.doc-hero h1 {
  font-size: clamp(1.9rem, 5vw, 2.7rem);
}
.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.6rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
}

.doc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 15rem;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: start;
  padding-block: clamp(2rem, 5vw, 3.25rem);
}
@media (max-width: 900px) {
  .doc-layout { grid-template-columns: 1fr; }
  .toc { order: -1; position: static !important; }
}

.toc {
  position: sticky;
  top: 5.5rem;
  border-left: 1px solid var(--rule);
  padding-left: 1.3rem;
}
.toc p {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rose-deep);
  margin: 0 0 0.9rem;
}
.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: toc;
  font-size: 0.8rem;
  line-height: 1.6;
}
.toc li { counter-increment: toc; margin-bottom: 0.55rem; }
.toc a { color: var(--ink-soft); display: block; }
.toc a::before {
  content: counter(toc, decimal-leading-zero) "  ";
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--rose);
}
.toc a:hover { color: var(--rose-deep); }

.doc { max-width: 44em; }

.doc .preamble {
  font-size: 0.98rem;
  color: var(--ink-soft);
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--rule);
}

.doc section { padding-top: 2.6rem; }

.doc h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.6vw, 1.4rem);
  letter-spacing: 0.08em;
  line-height: 1.6;
  margin: 0 0 1rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--rule-soft);
}
.doc h2 i {
  font-style: normal;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--rose);
  margin-right: 0.8rem;
}

.doc h3 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  margin: 1.9rem 0 0.6rem;
  color: var(--ink);
}

.doc p { margin: 0 0 1.05rem; }
.doc ul, .doc ol { margin: 0 0 1.15rem; padding-left: 1.5rem; }
.doc li { margin-bottom: 0.5rem; }
.doc ul { list-style: none; padding-left: 1.1rem; }
.doc ul > li { position: relative; padding-left: 1rem; }
.doc ul > li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.85em;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--rose);
}
.doc strong { font-weight: 700; }
.doc code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: rgba(249, 229, 234, 0.7);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  letter-spacing: 0;
}

.doc table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
  margin: 0 0 1.3rem;
}
.doc caption {
  text-align: left;
  font-size: 0.78rem;
  color: var(--ink-faint);
  padding-bottom: 0.5rem;
}
.doc th, .doc td {
  text-align: left;
  vertical-align: top;
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--rule);
  line-height: 1.75;
}
.doc thead th {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border-bottom: 1px solid var(--rule);
  white-space: nowrap;
}
.doc tbody th {
  font-weight: 700;
  white-space: nowrap;
  color: var(--ink);
}
/* scope cells are long identifiers — let them wrap instead of stretching the table */
.doc tbody th:has(code) {
  white-space: normal;
  min-width: 11rem;
  font-weight: 500;
}
.doc tbody th code { display: inline-block; }
.table-wrap { overflow-x: auto; }

.callout {
  margin: 1.4rem 0;
  padding: 1.2rem 1.4rem;
  border-radius: 10px;
  border: 1px solid rgba(226, 138, 157, 0.4);
  background: linear-gradient(to right, var(--blush), rgba(255, 255, 255, 0.6));
  font-size: 0.9rem;
  line-height: 1.9;
}
.callout > :first-child { margin-top: 0; }
.callout > :last-child { margin-bottom: 0; }
.callout__label {
  display: block;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rose-ink);
  margin-bottom: 0.5rem;
}

.doc-sig {
  margin-top: 2rem;
  font-size: 0.82rem;
  color: var(--ink-faint);
}

.contact-box {
  margin-top: 1rem;
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--paper-up);
}
.contact-box dl {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(5.5rem, auto) 1fr;
  gap: 0.55rem 1.2rem;
  font-size: 0.9rem;
}
.contact-box dt {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: 0.35rem;
}
.contact-box dd { margin: 0; }
@media (max-width: 520px) {
  .contact-box dl { grid-template-columns: 1fr; gap: 0.15rem; }
  .contact-box dt { padding-top: 0.7rem; }
}

/* --- entrance animation -------------------------------------------------- */
.rise {
  opacity: 0;
  transform: translateY(14px);
  animation: rise 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.rise:nth-child(1) { animation-delay: 0.05s; }
.d1 { animation-delay: 0.14s; }
.d2 { animation-delay: 0.24s; }
.d3 { animation-delay: 0.34s; }
.d4 { animation-delay: 0.44s; }
.d5 { animation-delay: 0.54s; }

@keyframes rise {
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .rise { opacity: 1; transform: none; }
}

@media print {
  body::before, body::after { display: none; }
  .topbar, .toc, .foot nav { display: none; }
  body { background: #fff; }
}