/* ==========================================================================
   Tenedini Biciclette e Motocicli — Via Lecco 18, Milano
   Firma grafica: la targa smaltata blu e le tavole tecniche da officina.
   ========================================================================== */

:root {
  --carta: #F6F3EA;
  --carta-scura: #EDE9DB;
  --tavola-fondo: #FDFCF6;
  --inchiostro: #1C2733;
  --inchiostro-morbido: #46525E;
  --blu: #1D4F8F;
  --blu-scuro: #16396B;
  --celeste: #4FB3A5;
  --celeste-chiaro: #A8D8D0;
  --minio: #C2542F;
  --linea: rgba(28, 39, 51, .16);
  --font-targa: "Barlow Condensed", "Arial Narrow", sans-serif;
  --font-testo: "Barlow", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "Consolas", monospace;
}

/* ---------- reset ---------- */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-testo);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--inchiostro);
  background: var(--carta);
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
figure { padding: 0; }

a { color: inherit; }

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

.sezione-scura :focus-visible,
.footer :focus-visible {
  outline-color: var(--celeste-chiaro);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px; left: 1rem;
  z-index: 2000;
  padding: .6rem 1rem;
  background: var(--inchiostro);
  color: var(--carta);
  border-radius: 4px;
  text-decoration: none;
}
.skip-link:focus { top: .5rem; }

.mono {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

/* ---------- bottoni ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .35em;
  padding: .8rem 1.6rem;
  border: 1px solid transparent;
  border-radius: 6px;
  font-family: var(--font-testo);
  font-weight: 600;
  font-size: .95rem;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease, transform .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-small { padding: .5rem 1.1rem; font-size: .85rem; }

.btn-blu { background: var(--blu); color: #fff; }
.btn-blu:hover { background: var(--blu-scuro); }

.btn-minio { background: var(--minio); color: #fff; }
.btn-minio:hover { background: #A84325; }

.btn-quieto {
  background: transparent;
  color: var(--inchiostro);
  border-color: rgba(28, 39, 51, .35);
}
.btn-quieto:hover { border-color: var(--inchiostro); }

/* ---------- intro "la ruota" ---------- */

.intro {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--carta);
  transition: transform .85s cubic-bezier(.6, 0, .4, 1);
}
.intro--via { transform: translateX(-108%); }

.intro-scena { text-align: center; }

.intro-ruota {
  width: clamp(150px, 28vw, 210px);
  height: auto;
  margin: 0 auto;
  transition: transform .85s cubic-bezier(.6, 0, .4, 1);
}
.intro--via .intro-ruota { transform: rotate(-300deg); }

.i-gomma {
  stroke: var(--inchiostro);
  stroke-width: 5;
  stroke-dasharray: 578;
  stroke-dashoffset: 578;
  animation: traccia .9s ease-out forwards;
}
.i-cerchio {
  stroke: var(--inchiostro);
  stroke-width: 1.5;
  opacity: .6;
  stroke-dasharray: 490;
  stroke-dashoffset: 490;
  animation: traccia .9s ease-out .15s forwards;
}
.i-raggi line {
  stroke: var(--inchiostro);
  stroke-width: 1.5;
  opacity: .75;
  stroke-dasharray: 160;
  stroke-dashoffset: 160;
  animation: traccia .45s ease-out forwards;
}
.i-raggi line:nth-child(1) { animation-delay: .45s; }
.i-raggi line:nth-child(2) { animation-delay: .53s; }
.i-raggi line:nth-child(3) { animation-delay: .61s; }
.i-raggi line:nth-child(4) { animation-delay: .69s; }
.i-raggi line:nth-child(5) { animation-delay: .77s; }
.i-raggi line:nth-child(6) { animation-delay: .85s; }
.i-raggi line:nth-child(7) { animation-delay: .93s; }
.i-raggi line:nth-child(8) { animation-delay: 1.01s; }
.i-mozzo {
  fill: var(--minio);
  opacity: 0;
  animation: appare .3s ease-out 1.1s forwards;
}

.intro-nome {
  margin-top: 1.2rem;
  font-family: var(--font-targa);
  font-weight: 700;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  letter-spacing: .28em;
  text-indent: .28em;
  text-transform: uppercase;
  color: var(--blu);
  opacity: 0;
  animation: sale .5s ease-out 1.15s forwards;
}

.intro-riga {
  margin-top: .4rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--inchiostro-morbido);
  opacity: 0;
  animation: sale .5s ease-out 1.35s forwards;
}

@keyframes traccia { to { stroke-dashoffset: 0; } }
@keyframes appare { to { opacity: 1; } }
@keyframes sale {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

.intro-lock { overflow: hidden; }

/* ---------- topbar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .6rem clamp(1rem, 3vw, 1.6rem);
  background: rgba(246, 243, 234, .93);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--linea);
}

.wordmark {
  font-family: var(--font-targa);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--blu);
  white-space: nowrap;
}

.nav { margin-left: auto; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: .5rem;
  padding: .45rem .9rem;
  background: transparent;
  border: 1px solid rgba(28, 39, 51, .35);
  border-radius: 6px;
  font-family: var(--font-testo);
  font-weight: 600;
  font-size: .85rem;
  color: var(--inchiostro);
  cursor: pointer;
}

.nav-toggle-bar {
  width: 16px;
  height: 2px;
  background: currentColor;
  box-shadow: 0 5px 0 currentColor, 0 -5px 0 currentColor;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: clamp(.9rem, 2vw, 1.5rem);
}

.nav-menu a {
  font-size: .92rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--inchiostro);
  padding: .3rem 0;
  border-bottom: 2px solid transparent;
}
.nav-menu a:hover { border-bottom-color: var(--minio); }

.topbar-actions {
  display: flex;
  align-items: center;
  gap: .9rem;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: .3rem;
  font-size: .82rem;
}

.lang-btn {
  background: none;
  border: none;
  padding: .25rem .3rem;
  font-family: var(--font-testo);
  font-weight: 600;
  font-size: .82rem;
  color: var(--inchiostro-morbido);
  cursor: pointer;
  border-bottom: 2px solid transparent;
}
.lang-btn.is-active {
  color: var(--inchiostro);
  border-bottom-color: var(--minio);
}
.lang-sep { color: rgba(28, 39, 51, .4); }

@media (max-width: 920px) {
  .nav-toggle { display: inline-flex; }
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: .6rem 1.2rem 1rem;
    background: var(--carta);
    border-bottom: 1px solid var(--linea);
    box-shadow: 0 14px 28px rgba(28, 39, 51, .12);
  }
  .nav.is-open .nav-menu { display: flex; }
  .nav-menu a {
    padding: .7rem .2rem;
    border-bottom: 1px solid rgba(28, 39, 51, .08);
  }
  .nav-menu li:last-child a { border-bottom-color: transparent; }
}

@media (max-width: 560px) {
  .wordmark { font-size: 1.2rem; }
  .topbar { gap: .6rem; }
}

/* ---------- hero / la targa ---------- */

.hero {
  padding: clamp(3.2rem, 8vh, 5rem) 1.5rem 4rem;
  text-align: center;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--minio);
  margin-bottom: 2.2rem;
}

.targa {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 3rem) clamp(1.5rem, 6vw, 3.5rem) clamp(2.2rem, 5vw, 3.2rem);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, .14) 0%, rgba(255, 255, 255, 0) 38%),
    var(--blu);
  border-radius: 18px;
  box-shadow:
    inset 0 0 0 3px var(--blu),
    inset 0 0 0 5px rgba(255, 255, 255, .9),
    0 20px 45px rgba(28, 39, 51, .22);
}

.vite {
  position: absolute;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: linear-gradient(145deg, #E9EBED, #97A0A9);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, .35);
}
.vite::after {
  content: "";
  position: absolute;
  left: 2px; right: 2px;
  top: 50%;
  height: 1px;
  background: rgba(28, 39, 51, .55);
  transform: rotate(35deg);
}
.v1 { top: 12px; left: 12px; }
.v2 { top: 12px; right: 12px; }
.v2::after { transform: rotate(-20deg); }
.v3 { bottom: 12px; left: 12px; }
.v3::after { transform: rotate(80deg); }
.v4 { bottom: 12px; right: 12px; }
.v4::after { transform: rotate(10deg); }

.targa-nome {
  font-family: var(--font-targa);
  font-weight: 700;
  font-size: clamp(3.2rem, 12vw, 6.2rem);
  line-height: .95;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: #fff;
}

.targa-sotto {
  margin-top: .6rem;
  font-family: var(--font-targa);
  font-weight: 600;
  font-size: clamp(1rem, 3vw, 1.3rem);
  letter-spacing: .38em;
  text-indent: .38em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .92);
}

.targa-via {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--celeste-chiaro);
}

.hero-claim {
  margin-top: 2.2rem;
  font-family: var(--font-targa);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.8vw, 2.1rem);
  color: var(--minio);
}

.hero-lead {
  max-width: 48ch;
  margin: .9rem auto 0;
  font-size: 1.06rem;
  color: var(--inchiostro-morbido);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .9rem;
  margin-top: 2rem;
}

.pilastri {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 880px;
  margin: 3.2rem auto 0;
}

.pilastro {
  display: grid;
  justify-items: center;
  gap: .6rem;
  padding: 0 .5rem;
}

.pil-icona {
  width: 46px;
  height: 46px;
  stroke: var(--blu);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.pil-icona .pieno { fill: var(--minio); stroke: none; }

.pilastro p {
  font-size: .92rem;
  font-weight: 500;
  color: var(--inchiostro-morbido);
  max-width: 24ch;
}

@media (max-width: 720px) {
  .pilastri { grid-template-columns: 1fr; max-width: 340px; gap: 1.2rem; }
  .pilastro { grid-template-columns: 46px 1fr; text-align: left; justify-items: start; align-items: center; }
}

/* ---------- fregio a catena ---------- */

.catena {
  height: 30px;
  border-top: 1px solid var(--linea);
  border-bottom: 1px solid var(--linea);
  background-color: var(--carta-scura);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='18'%3E%3Crect x='1' y='4.5' width='26' height='9' rx='4.5' fill='none' stroke='%231C2733' stroke-opacity='.4'/%3E%3Crect x='29' y='4.5' width='26' height='9' rx='4.5' fill='none' stroke='%231C2733' stroke-opacity='.4'/%3E%3Ccircle cx='28' cy='9' r='2' fill='%23C2542F' fill-opacity='.65'/%3E%3Ccircle cx='0' cy='9' r='2' fill='%23C2542F' fill-opacity='.65'/%3E%3Ccircle cx='56' cy='9' r='2' fill='%23C2542F' fill-opacity='.65'/%3E%3C/svg%3E");
  background-repeat: repeat-x;
  background-position: center;
}

/* ---------- sezioni ---------- */

.sezione {
  padding: clamp(3.5rem, 8vw, 5.5rem) 1.5rem;
}

.sezione-chiara { background: var(--carta-scura); }

.sezione-titolo {
  font-family: var(--font-targa);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
  letter-spacing: .04em;
  text-transform: uppercase;
  text-align: center;
}

.sezione-sub {
  margin-top: .5rem;
  font-family: var(--font-mono);
  font-size: clamp(.82rem, 2vw, .95rem);
  text-align: center;
  color: var(--minio);
}

.sezione-sub-chiara { color: var(--celeste-chiaro); }

/* ---------- la bottega ---------- */

.bottega-testo {
  max-width: 62ch;
  margin: 2.4rem auto 0;
  display: grid;
  gap: 1.2rem;
  font-size: 1.05rem;
}

/* ---------- le bici (gallery di tavole) ---------- */

.tavole {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
  max-width: 1160px;
  margin: 2.8rem auto 0;
}

.tavola {
  position: relative;
  padding: 2.4rem 1.1rem 1.3rem;
  background:
    linear-gradient(rgba(29, 79, 143, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 79, 143, .06) 1px, transparent 1px),
    var(--tavola-fondo);
  background-size: 20px 20px, 20px 20px, auto;
  border: 1px solid var(--linea);
  border-radius: 4px;
  box-shadow: 0 10px 24px rgba(28, 39, 51, .07);
}

.tavola-num {
  position: absolute;
  top: .7rem;
  right: .9rem;
  color: var(--blu);
  opacity: .65;
}

.bici-svg {
  width: 100%;
  height: auto;
  display: block;
}

.bici-svg .telaio {
  stroke: var(--inchiostro);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.bici-svg .spesso { stroke-width: 4.5; }
.bici-svg .gomma { stroke: var(--inchiostro); stroke-width: 3.5; }
.bici-svg .tassello { stroke-dasharray: 3 4.5; }
.bici-svg .cerchio { stroke: var(--inchiostro); stroke-width: 1.2; opacity: .55; }
.bici-svg .raggi line { stroke: var(--inchiostro); stroke-width: 1; opacity: .5; }
.bici-svg .mozzo { fill: var(--inchiostro); }
.bici-svg .mozzo.pieno { fill: var(--celeste); }
.bici-svg .catenella { stroke: var(--inchiostro); stroke-width: 1; stroke-dasharray: 3 3; opacity: .55; }
.bici-svg .dettaglio { stroke: var(--celeste); stroke-width: 2.2; stroke-linecap: round; }
.bici-svg .batteria { stroke: var(--celeste); stroke-width: 6; opacity: .85; stroke-linecap: round; }
.bici-svg .fulmine { stroke: var(--minio); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.bici-svg .bandierina { stroke: var(--minio); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }

.tavola figcaption { margin-top: .7rem; }

.tavola h3 {
  font-family: var(--font-targa);
  font-weight: 600;
  font-size: 1.3rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--blu);
}

.tavola figcaption p {
  margin-top: .2rem;
  font-size: .88rem;
  color: var(--inchiostro-morbido);
}

.tavole-nota {
  max-width: 58ch;
  margin: 2.4rem auto 0;
  text-align: center;
  font-size: .95rem;
  color: var(--inchiostro-morbido);
}

@media (max-width: 1080px) { .tavole { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px)  { .tavole { grid-template-columns: 1fr; max-width: 400px; } }

@media (prefers-reduced-motion: no-preference) {
  .tavola:hover .ruota,
  .tavola:focus-within .ruota {
    animation: pedala 1.5s linear infinite;
  }
  @keyframes pedala { to { transform: rotate(360deg); } }
}

/* ---------- l'officina ---------- */

.officina-testo {
  max-width: 62ch;
  margin: 2.4rem auto 0;
  font-size: 1.05rem;
}

.tagliandi {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
  max-width: 940px;
  margin: 2.8rem auto 0;
}

.tagliando {
  padding: 1.6rem 1.5rem 1.7rem;
  background: var(--tavola-fondo);
  border: 1px solid var(--linea);
  border-top: 3px solid var(--blu);
  border-radius: 4px;
  text-align: center;
}

.tagliando-nome {
  font-family: var(--font-targa);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.tagliando-prezzo {
  margin-top: .4rem;
  font-family: var(--font-targa);
  font-weight: 700;
  font-size: 2rem;
  line-height: 1.1;
  color: var(--minio);
}
.tagliando-prezzo span {
  font-size: 1rem;
  font-weight: 600;
  color: var(--inchiostro-morbido);
}

.tagliando-desc {
  margin-top: .6rem;
  font-size: .92rem;
  color: var(--inchiostro-morbido);
}

.officina-nota {
  margin-top: 2.4rem;
  text-align: center;
  color: var(--inchiostro-morbido);
}

@media (max-width: 800px) {
  .tagliandi { grid-template-columns: 1fr; max-width: 420px; }
}

/* ---------- il restauro ---------- */

.sezione-scura {
  background: var(--blu-scuro);
  color: var(--carta);
}

.sezione-scura .sezione-titolo { color: #fff; }

.restauro-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  max-width: 940px;
  margin: 2.6rem auto 0;
  align-items: start;
}

.restauro-testo {
  font-size: 1.05rem;
  color: rgba(246, 243, 234, .92);
}

.restauro-passi { display: grid; }

.restauro-passi li {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: .8rem 0;
  border-bottom: 1px solid rgba(246, 243, 234, .18);
  font-size: .98rem;
}
.restauro-passi li:first-child { padding-top: 0; }
.restauro-passi li:last-child { border-bottom: none; }

.passo-num { color: var(--celeste-chiaro); }

@media (max-width: 760px) {
  .restauro-inner { grid-template-columns: 1fr; max-width: 520px; }
}

/* ---------- orari e dove ---------- */

.orari-dove {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  max-width: 900px;
  margin: 2.8rem auto 0;
  align-items: start;
}

.orari-tabella {
  width: 100%;
  border-collapse: collapse;
  font-size: .98rem;
}

.orari-tabella th,
.orari-tabella td {
  padding: .6rem .2rem;
  border-bottom: 1px solid var(--linea);
  text-align: left;
  font-weight: 400;
}

.orari-tabella td { text-align: right; font-variant-numeric: tabular-nums; }

.dove-indirizzo {
  font-family: var(--font-targa);
  font-style: normal;
  font-weight: 600;
  font-size: 1.4rem;
  line-height: 1.35;
  letter-spacing: .03em;
  text-transform: uppercase;
}

.dove-metro {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-top: .9rem;
  font-size: .92rem;
  color: var(--inchiostro-morbido);
}

.metro-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #E0492F;
  flex: none;
}

.dove-azioni {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 1.6rem;
}

.dove-note {
  margin-top: 1.4rem;
  font-size: .88rem;
  color: var(--inchiostro-morbido);
}

@media (max-width: 760px) {
  .orari-dove { grid-template-columns: 1fr; max-width: 480px; }
}

/* ---------- footer ---------- */

.footer {
  position: relative;
  padding: 3.5rem 1.5rem 2.5rem;
  background: var(--inchiostro);
  color: var(--carta);
  overflow: hidden;
}

.footer-wordmark {
  position: absolute;
  top: -1rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-targa);
  font-weight: 700;
  font-size: clamp(5rem, 16vw, 10rem);
  letter-spacing: .06em;
  text-transform: uppercase;
  white-space: nowrap;
  color: rgba(246, 243, 234, .06);
  pointer-events: none;
  user-select: none;
}

.footer-cols {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.footer-cols h3 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--celeste-chiaro);
  margin-bottom: .7rem;
}

.footer-cols p {
  font-size: .95rem;
  color: rgba(246, 243, 234, .88);
  margin-bottom: .3rem;
}

.footer-cols a {
  color: var(--carta);
  text-decoration-color: rgba(246, 243, 234, .4);
  text-underline-offset: 3px;
}
.footer-cols a:hover { text-decoration-color: var(--carta); }

.footer-legal {
  position: relative;
  max-width: 900px;
  margin: 2.5rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(246, 243, 234, .16);
  font-size: .8rem;
  color: rgba(246, 243, 234, .6);
}

@media (max-width: 760px) {
  .footer-cols { grid-template-columns: 1fr; gap: 1.6rem; }
}

/* ---------- reveal on scroll ---------- */
/* Lo stato nascosto esiste solo se il JS è partito (classe .js sul root)
   e solo se l'utente non preferisce il movimento ridotto. */

@media (prefers-reduced-motion: no-preference) {
  .js .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .6s ease, transform .6s ease;
  }
  .js .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .btn:hover { transform: none; transition: none; }
  .intro { display: none; }
}