/* ============================================================
   Raven Industrial — "The Plumb Line"
   Brand tokens source: branding/Raven Brand Guidelines_Sept2024.pdf
   ============================================================ */
:root {
  --navy: #1B3243;
  --navy-deep: #12222E;
  --navy-abyss: #0C1820;
  --blue: #4F94BF;
  --light-blue: #9BBFD4;
  --vibrant-blue: #6ED6FF;
  --off-white: #F2F2ED;
  --white: #FFFFFF;
  --gold: #E2C533;
  --gold-dark: #C2B03E;
  --gold-light: #F4D967;
  --ink: #16262F;
  --blue-text: #2D6483;
  --gold-text: #7A5F16; /* darker, WCAG AA-safe derivative of --gold for text on light backgrounds */

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --mono: 'Inter', ui-monospace, 'SF Mono', Menlo, monospace;

  --container: 1180px;
  --gap: clamp(1.5rem, 3vw, 3rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --scroll: 0;        /* 0..1 whole-page scroll progress, set by JS */
  --facet: 4.5vw;     /* height of angled section facets */
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
html, body { overflow-x: hidden; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}
.container-wide { max-width: 1360px; }

h1, h2, h3 { font-weight: 700; letter-spacing: -0.015em; color: var(--navy); }
h1 { font-size: clamp(2.6rem, 6vw, 4.6rem); line-height: 1.02; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); line-height: 1.1; }
h3 { font-size: 1.18rem; }
p { color: var(--ink); }

/* Blueprint-style eyebrow with tick */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--blue-text);
  margin-bottom: 1.1rem;
}
.eyebrow::before {
  content: '';
  width: 26px; height: 1px;
  background: currentColor;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.95rem 2rem;
  border-radius: 2px;
  font-weight: 600; font-size: 0.95rem; letter-spacing: 0.01em;
  border: 1.5px solid transparent;
  cursor: pointer; position: relative;
  transition: transform 0.35s var(--ease), background 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), color 0.3s var(--ease);
}
.btn-primary { background: var(--gold); color: var(--navy-deep); box-shadow: 0 10px 30px -12px rgba(226,197,51,0.6); }
.btn-primary:hover { background: var(--gold-dark); transform: translateY(-2px); box-shadow: 0 16px 36px -12px rgba(194,176,62,0.65); }
.btn-outline { border-color: currentColor; color: var(--navy); background: transparent; }
.btn-outline:hover { transform: translateY(-2px); }
.btn-ghost-light { border-color: rgba(255,255,255,0.35); color: #fff; background: transparent; }
.btn-ghost-light:hover { background: rgba(255,255,255,0.08); border-color: #fff; transform: translateY(-2px); }
.btn-large { padding: 1.15rem 2.5rem; font-size: 1.02rem; }
.btn:focus-visible { outline: 3px solid var(--vibrant-blue); outline-offset: 3px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 200;
  background: transparent;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(255,255,255,0.96);
  border-bottom-color: rgba(27,50,67,0.08);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 78px; }
.logo { display: flex; align-items: baseline; gap: 0.5rem; }
.logo-raven { font-weight: 800; font-size: 1.28rem; letter-spacing: 0.06em; color: var(--white); transition: color 0.4s var(--ease); }
.logo-industrial { font-weight: 400; font-size: 1.02rem; letter-spacing: 0.18em; color: var(--vibrant-blue); text-transform: uppercase; transition: color 0.4s var(--ease); }
.scrolled .logo-raven { color: var(--navy); }
.scrolled .logo-industrial { color: var(--blue-text); }

.site-nav { display: flex; align-items: center; gap: 2.2rem; }
.site-nav a:not(.nav-cta) {
  font-weight: 500; font-size: 0.95rem; color: var(--white);
  position: relative; padding-bottom: 4px; transition: color 0.4s var(--ease);
}
.scrolled .site-nav a:not(.nav-cta) { color: var(--navy); }
.site-nav a:not(.nav-cta)::after {
  content: ''; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 2px; background: var(--gold); transition: right 0.35s var(--ease);
}
.site-nav a:not(.nav-cta):hover::after,
.site-nav a.active::after { right: 0; }
.nav-cta {
  background: var(--gold); color: var(--navy-deep) !important;
  padding: 0.6rem 1.4rem; border-radius: 2px; font-weight: 600; font-size: 0.9rem;
  transition: background 0.3s var(--ease), transform 0.3s var(--ease);
}
.nav-cta:hover { background: var(--gold-light); transform: translateY(-1px); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; z-index: 210; }
.nav-toggle span { width: 24px; height: 2px; background: var(--white); transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), background 0.3s var(--ease); }
.scrolled .nav-toggle span, .nav-open .nav-toggle span { background: var(--navy); }

/* ---------- The Plumb Line (spine) ---------- */
.spine {
  position: fixed;
  top: 0; bottom: 0;
  left: clamp(18px, 4.2vw, 90px);
  width: 2px;
  z-index: 150;
  pointer-events: none;
}
.spine-track { position: absolute; inset: 0; background: rgba(120,150,170,0.22); }
.spine-fill {
  position: absolute; top: 0; left: 0; right: 0; height: 100%;
  background: linear-gradient(var(--gold), var(--vibrant-blue));
  transform: scaleY(var(--scroll)); transform-origin: top;
}
.spine-bug {
  position: absolute; left: 50%; top: calc(var(--scroll) * 100%);
  width: 11px; height: 11px; margin: -5.5px 0 0 -5.5px;
  transform: rotate(45deg);
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(226,197,51,0.18), 0 0 18px 2px rgba(226,197,51,0.4);
}
.spine-percent {
  position: absolute; left: 14px; top: calc(var(--scroll) * 100%);
  transform: translateY(-50%);
  font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.15em;
  color: var(--blue-text); white-space: nowrap; opacity: 0.75;
}
@media (max-width: 820px) { .spine, .spine-percent { display: none; } }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-1.is-visible { transition-delay: 0.09s; }
.reveal-2.is-visible { transition-delay: 0.18s; }
.reveal-3.is-visible { transition-delay: 0.27s; }
.reveal-4.is-visible { transition-delay: 0.36s; }

.mask-line { display: block; overflow: hidden; padding-bottom: 0.05em; }
.mask-line-inner { display: block; transform: translateY(115%); transition: transform 1.05s var(--ease); }
.reveal.is-visible .mask-line-inner { transform: translateY(0); }
.mask-line:nth-of-type(1) .mask-line-inner { transition-delay: 0.05s; }
.mask-line:nth-of-type(2) .mask-line-inner { transition-delay: 0.17s; }
.mask-line:nth-of-type(3) .mask-line-inner { transition-delay: 0.29s; }

/* ---------- HERO ---------- */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  background: var(--navy-deep);
  color: var(--white); overflow: hidden;
  padding: 120px 0 90px;
}
.hero-photo {
  position: absolute; inset: 0; z-index: 0;
  background: url('../assets/images/hero-dusk.jpg') center center / cover no-repeat;
}
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(90deg, rgba(12,24,32,0.94) 0%, rgba(12,24,32,0.78) 30%, rgba(18,34,46,0.4) 60%, rgba(18,34,46,0.15) 100%),
    linear-gradient(180deg, rgba(12,24,32,0.5) 0%, transparent 26%, transparent 60%, rgba(12,24,32,0.6) 100%);
}
.hero > .container { width: 100%; }
.hero-inner { position: relative; z-index: 3; max-width: 820px; }
.hero-inner .eyebrow, .hero-inner h1, .hero-sub { text-shadow: 0 1px 24px rgba(12, 24, 32, 0.55); }
.hero .eyebrow { color: var(--vibrant-blue); }
.hero h1 { color: var(--white); }
.hero h1 .accent { color: var(--gold); }
.hero-sub { margin-top: 1.6rem; font-size: clamp(1.05rem, 1.6vw, 1.22rem); color: var(--light-blue); max-width: 560px; }
.hero-actions { margin-top: 2.6rem; display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-meta {
  position: absolute; z-index: 3; left: 0; right: 0; bottom: 34px;
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 1rem; flex-wrap: wrap;
}
.hero-meta .container { display: flex; justify-content: flex-end; align-items: flex-end; width: 100%; gap: 1rem; }
.scroll-cue { display: flex; align-items: center; gap: 0.7rem; font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase; color: rgba(213,226,235,0.85); }
.scroll-cue .rail { width: 1px; height: 46px; background: linear-gradient(rgba(155,191,212,0.6), transparent); position: relative; overflow: hidden; }
.scroll-cue .rail::after { content: ''; position: absolute; left: 0; top: 0; width: 100%; height: 40%; background: var(--gold); animation: cue 2.2s var(--ease) infinite; }
@keyframes cue { 0% { transform: translateY(-100%); } 60%,100% { transform: translateY(250%); } }

/* ---------- Section scaffolding ---------- */
.section { position: relative; padding: clamp(5rem, 10vw, 8rem) 0; }
.section-dark { background: var(--navy); color: var(--white); }
.section-deep { background: var(--navy-deep); color: var(--white); }
.section-tint { background: var(--off-white); }
.section-dark h2, .section-deep h2 { color: var(--white); }
.section-dark .eyebrow, .section-deep .eyebrow { color: var(--vibrant-blue); }

/* Faceted interlock: angled top edge that bites into the previous section */
.facet-top { clip-path: polygon(0 var(--facet), 100% 0, 100% 100%, 0 100%); margin-top: calc(var(--facet) * -1); padding-top: calc(clamp(5rem,10vw,8rem) + var(--facet)); }
.facet-top-rev { clip-path: polygon(0 0, 100% var(--facet), 100% 100%, 0 100%); margin-top: calc(var(--facet) * -1); padding-top: calc(clamp(5rem,10vw,8rem) + var(--facet)); }

/* Section index annotation (blueprint sheet number) */
.section-index {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.2em;
  color: var(--blue-text); opacity: 0.7; margin-bottom: 0.4rem;
}
.section-dark .section-index, .section-deep .section-index { color: var(--light-blue); opacity: 0.6; }

/* ---------- Manifesto ---------- */
.manifesto { position: relative; }
.manifesto .container { max-width: 960px; }
.manifesto p {
  font-size: clamp(1.4rem, 3vw, 2.15rem); line-height: 1.3; font-weight: 500; color: var(--navy);
  letter-spacing: -0.01em;
}
.manifesto .lead-word { color: var(--blue-text); }
.manifesto .underscore { color: var(--gold-text); font-weight: 700; }

/* ---------- Value section (reframed "Who We Serve") ---------- */
.value-head { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--gap); align-items: end; margin-bottom: 3.4rem; }
.value-head p { color: var(--light-blue); font-size: 1.05rem; }
.value-list { display: grid; gap: 0; }
.value-row {
  display: grid; grid-template-columns: 64px 1.1fr 1.6fr; gap: 2rem; align-items: start;
  padding: 2.3rem 0; border-top: 1px solid rgba(155,191,212,0.16);
  transition: background 0.5s var(--ease);
}
.value-row:last-child { border-bottom: 1px solid rgba(155,191,212,0.16); }
.value-num { font-family: var(--mono); font-size: 0.85rem; color: var(--gold); letter-spacing: 0.1em; padding-top: 0.35rem; }
.value-icon { width: 40px; height: 40px; color: var(--vibrant-blue); }
.value-title { display: flex; align-items: center; gap: 1.1rem; }
.value-title h3 { color: var(--white); font-size: 1.35rem; }
.value-row p { color: var(--light-blue); font-size: 1rem; padding-top: 0.15rem; }
.value-row:hover { background: rgba(110,214,255,0.04); }
.value-note {
  margin-top: 2.6rem; font-size: 1.08rem; color: var(--light-blue);
  max-width: 760px; border-left: 2px solid var(--gold); padding-left: 1.3rem;
}
.value-note strong { color: var(--white); font-weight: 600; }

/* ---------- Credentials ---------- */
.cred-inner { display: grid; grid-template-columns: 1.35fr 1fr; gap: clamp(2rem,5vw,5rem); align-items: center; }
.cred-copy p { margin-top: 1.2rem; color: #33454f; font-size: 1.02rem; }
.cred-name { display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; }
.cred-role { font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--blue-text); }
.blueprint-panel {
  position: relative; background: var(--navy-deep); color: var(--white);
  padding: 2.6rem 2.2rem; overflow: hidden;
  border: 1px solid rgba(155,191,212,0.14);
}
.blueprint-panel::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(155,191,212,0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(155,191,212,0.08) 1px, transparent 1px);
  background-size: 30px 30px; opacity: 0.6; pointer-events: none;
}
.bp-stat { position: relative; padding: 1.3rem 0; border-bottom: 1px dashed rgba(155,191,212,0.22); }
.bp-stat:last-child { border-bottom: none; padding-bottom: 0; }
.bp-stat:first-child { padding-top: 0; }
.bp-value { font-size: clamp(2.4rem, 4vw, 3rem); font-weight: 800; color: var(--white); line-height: 1; letter-spacing: -0.02em; display: flex; align-items: baseline; }
.bp-value .unit { color: var(--gold); font-size: 0.55em; margin-left: 0.15rem; }
.bp-label { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--light-blue); margin-top: 0.5rem; }

/* ---------- Development teaser ---------- */
.legacy-inner { max-width: 720px; position: relative; z-index: 2; }
.legacy-inner p { color: var(--light-blue); margin-top: 1.2rem; font-size: 1.05rem; }
.legacy-inner .btn { margin-top: 2rem; }
.legacy-bg { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.legacy-bg svg { position: absolute; right: -5%; top: 50%; transform: translateY(-50%); width: 60%; height: auto; opacity: 0.12; }

/* ---------- CTA ---------- */
.cta { text-align: center; }
.cta h2 { margin-bottom: 0.8rem; }
.cta p { color: var(--light-blue); margin-bottom: 2rem; }
.cta.section-tint p { color: #52626c; }

/* ---------- Page hero (dev/contact) ---------- */
.page-hero {
  position: relative; overflow: hidden;
  background: radial-gradient(110% 120% at 80% 0%, #23425a 0%, var(--navy) 45%, var(--navy-deep) 100%);
  color: var(--white); padding: clamp(9rem, 16vw, 12rem) 0 clamp(4rem, 8vw, 6rem);
}
.page-hero h1 { color: var(--white); }
.page-hero .hero-sub { color: var(--light-blue); margin-top: 1rem; }
.page-hero .eyebrow { color: var(--vibrant-blue); }

/* ---------- Dev content ---------- */
.dev-note { background: var(--off-white); }
.dev-note .container { max-width: 820px; }
.dev-note p { font-size: 1.12rem; color: #33454f; }
.dev-note a { color: var(--blue-text); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.dev-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 3rem 3.5rem; }
.dev-block { position: relative; padding-left: 1.6rem; }
.dev-block::before { content: ''; position: absolute; left: 0; top: 0.35rem; width: 3px; height: 1.7rem; background: var(--gold); }
.dev-block h3 { font-size: 1.3rem; margin-bottom: 0.7rem; color: var(--white); }
.dev-block p { color: var(--light-blue); }
.dev-markets h2 { color: var(--white); margin-bottom: 1.8rem; }
.market-list { list-style: none; display: flex; flex-wrap: wrap; gap: 0.9rem; }
.market-list li { font-family: var(--mono); border: 1px solid rgba(255,255,255,0.22); padding: 0.6rem 1.3rem; font-size: 0.85rem; letter-spacing: 0.08em; color: var(--light-blue); transition: border-color 0.3s var(--ease), color 0.3s var(--ease); }
.market-list li:hover { border-color: var(--gold); color: var(--white); }

/* ---------- Contact ---------- */
.contact-inner { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: var(--gap); }
.contact-info h2 { margin-bottom: 1.4rem; }
.contact-link { display: flex; align-items: center; gap: 0.7rem; font-size: 1.15rem; font-weight: 600; color: var(--navy); margin-bottom: 0.9rem; width: fit-content; border-bottom: 2px solid transparent; transition: border-color 0.3s var(--ease), color 0.3s var(--ease); }
.contact-link:hover { border-color: var(--gold); color: var(--blue-text); }
.contact-area { margin-top: 1.6rem; color: #52626c; font-size: 0.98rem; max-width: 420px; }
.contact-form { background: var(--white); border: 1px solid rgba(27,50,67,0.12); border-radius: 3px; padding: 2.4rem; display: grid; gap: 1.3rem; box-shadow: 0 30px 60px -40px rgba(27,50,67,0.4); }
.contact-form label { display: grid; gap: 0.5rem; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; font-weight: 600; color: var(--navy); }
.contact-form input, .contact-form textarea { font-family: var(--font); font-size: 0.98rem; padding: 0.9rem 1rem; border: 1.5px solid rgba(27,50,67,0.15); border-radius: 2px; background: var(--off-white); color: var(--ink); transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease); }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--blue); background: var(--white); box-shadow: 0 0 0 4px rgba(79,148,191,0.15); }
.contact-form button { justify-self: start; margin-top: 0.3rem; }
.form-note { font-family: var(--mono); font-size: 0.78rem; color: var(--blue-text); letter-spacing: 0.05em; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-abyss); color: var(--light-blue); padding-top: 4rem; position: relative; overflow: hidden; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; padding-bottom: 2.6rem; border-bottom: 1px solid rgba(255,255,255,0.1); position: relative; z-index: 1; }
.footer-brand .logo-raven { color: var(--white); }
.footer-brand .logo-industrial { color: var(--vibrant-blue); }
.footer-brand p { margin-top: 1rem; color: var(--light-blue); font-size: 0.92rem; max-width: 320px; }
.footer-col h4 { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--blue-text); margin-bottom: 1rem; }
.footer-col a, .footer-col span { display: block; margin-bottom: 0.6rem; font-size: 0.92rem; }
.footer-col a:hover { color: var(--gold); }
.footer-bottom { padding: 1.6rem 0; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em; color: #7C93A6; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem 1.5rem; position: relative; z-index: 1; }
.footer-legal a { color: #7C93A6; text-decoration: none; border-bottom: 1px solid rgba(124,147,166,0.35); padding-bottom: 1px; transition: color 0.3s ease, border-color 0.3s ease; }
.footer-legal a:hover, .footer-legal a:focus-visible { color: var(--gold); border-color: var(--gold); }

/* ---------- Scroll progress bar ---------- */
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; width: calc(var(--scroll) * 100%); background: linear-gradient(90deg, var(--gold), var(--vibrant-blue)); z-index: 300; pointer-events: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .value-head { grid-template-columns: 1fr; }
  .cred-inner { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; }
  .dev-grid { grid-template-columns: 1fr; gap: 2.4rem; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .value-row { grid-template-columns: 1fr; gap: 0.8rem; padding: 1.8rem 0; }
  .value-num { padding-top: 0; }
  .footer-inner { grid-template-columns: 1fr; }
  .site-nav {
    position: fixed; inset: 0 0 0 0; background: var(--white);
    flex-direction: column; align-items: flex-start; justify-content: center;
    padding: 2rem 2.2rem; gap: 1.8rem;
    transform: translateX(100%); transition: transform 0.4s var(--ease);
  }
  .site-nav.is-open { transform: translateX(0); }
  .site-nav a:not(.nav-cta) { color: var(--navy); font-size: 1.5rem; }
  .nav-toggle { display: flex; }
  .nav-open .nav-toggle span { background: var(--navy); }
  .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .facet-top, .facet-top-rev { clip-path: none; margin-top: 0; padding-top: clamp(5rem,10vw,8rem); }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .mask-line-inner { transform: none; transition: none; }
  .scroll-cue .rail::after { animation: none; }
  .spine-bug { display: none; }
  .btn, .value-row { transition: none; }
}

/* Progressive enhancement: native cross-document view transitions */
@media (prefers-reduced-motion: no-preference) {
  @view-transition { navigation: auto; }
  ::view-transition-old(root) { animation: pv-out 0.35s var(--ease) forwards; }
  ::view-transition-new(root) { animation: pv-in 0.45s var(--ease) backwards; }
  @keyframes pv-out { to { opacity: 0; } }
  @keyframes pv-in { from { opacity: 0; } }
}