/* SHINKAIONAVI — dark navy tech showcase · prefix sn- */
:root {
  --sn-navy: #0A0E14;
  --sn-navy-mid: #10161f;
  --sn-navy-lift: #161d28;
  --sn-cyan: #5CE1FF;
  --sn-cyan-deep: #3ec4e0;
  --sn-cyan-soft: rgba(92, 225, 255, 0.16);
  --sn-mist: #d7dee8;
  --sn-mist-dim: #8b95a5;
  --sn-ink: #e8edf5;
  --sn-line: rgba(232, 237, 245, 0.1);
  --sn-line-strong: rgba(92, 225, 255, 0.42);
  --sn-overlay: rgba(10, 14, 20, 0.58);
  --sn-font: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --sn-display: "Outfit", "Noto Sans JP", sans-serif;
  --sn-header: 4.15rem;
  --sn-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --sn-shadow: 0 22px 48px rgba(0, 0, 0, 0.38);
  --sn-gutter: clamp(1.15rem, 4vw, 2.4rem);
}

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body.sn-site {
  margin: 0;
  font-family: var(--sn-font);
  color: var(--sn-mist);
  background:
    radial-gradient(900px 420px at 88% -8%, rgba(92, 225, 255, 0.08), transparent 60%),
    radial-gradient(720px 380px at 0% 18%, rgba(92, 225, 255, 0.04), transparent 55%),
    var(--sn-navy);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
address { font-style: normal; }
button, input, select, textarea { font: inherit; color: inherit; }

h1, h2, h3, b, strong {
  font-family: var(--sn-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--sn-ink);
}

h1 { font-size: clamp(1.85rem, 4.6vw, 3.15rem); line-height: 1.28; margin: 0; }
h2 { font-size: clamp(1.45rem, 3.2vw, 2.25rem); line-height: 1.35; margin: 0; }
h3 { font-size: 1.08rem; line-height: 1.45; margin: 0; }

.sn-skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--sn-cyan);
  color: var(--sn-navy);
  padding: 0.6rem 1rem;
  z-index: 200;
}
.sn-skip:focus { left: 0.6rem; top: 0.6rem; }

.sn-shell {
  width: min(1180px, calc(100% - 2 * var(--sn-gutter)));
  margin-inline: auto;
}

.sn-kicker {
  margin: 0 0 0.55rem;
  font-family: var(--sn-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--sn-cyan);
}
.sn-kicker span { opacity: 0.75; }

.sn-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0.7rem 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--sn-cyan);
  color: var(--sn-navy);
  font-family: var(--sn-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  box-shadow: 0 10px 28px rgba(92, 225, 255, 0.22);
  transition: transform 0.28s var(--sn-ease), background 0.28s ease;
}
.sn-btn:hover { background: #7aebff; transform: translateY(-2px); }
.sn-btn--ghost {
  background: transparent;
  color: var(--sn-ink);
  border-color: var(--sn-line);
  box-shadow: none;
}
.sn-btn--ghost:hover { border-color: var(--sn-cyan); color: var(--sn-cyan); transform: none; }

.sn-textlink {
  display: inline-flex;
  color: var(--sn-cyan);
  font-size: 0.86rem;
  letter-spacing: 0.04em;
}
.sn-textlink:hover { opacity: 0.8; }

.sn-icon-btn {
  width: 2.7rem;
  height: 2.7rem;
  border: 1px solid var(--sn-line);
  background: var(--sn-navy-lift);
  color: var(--sn-ink);
  border-radius: 50%;
  cursor: pointer;
}
.sn-icon-btn:hover { border-color: var(--sn-cyan); color: var(--sn-cyan); }

/* Reveal: visible until html.sn-ready */
.sn-reveal { opacity: 1; transform: none; }
html.sn-ready .sn-reveal {
  opacity: 0;
  transform: translateY(18px);
}
html.sn-ready .sn-reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s var(--sn-ease), transform 0.7s var(--sn-ease);
}

/* Pulse */
.sn-logo__pulse {
  position: relative;
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 50%;
  background: var(--sn-cyan);
  box-shadow: 0 0 0 0 rgba(92, 225, 255, 0.55);
  animation: sn-pulse 2.2s ease-out infinite;
  flex-shrink: 0;
}
@keyframes sn-pulse {
  0% { box-shadow: 0 0 0 0 rgba(92, 225, 255, 0.5); }
  70% { box-shadow: 0 0 0 10px rgba(92, 225, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(92, 225, 255, 0); }
}

/* Header */
.sn-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--sn-header);
  background: rgba(10, 14, 20, 0.72);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid transparent;
  transition: border-color 0.35s ease, background 0.35s ease;
}
.sn-header.is-scrolled {
  background: rgba(10, 14, 20, 0.94);
  border-bottom-color: var(--sn-line);
}
.sn-header__bar {
  width: min(1180px, calc(100% - 2 * var(--sn-gutter)));
  margin: 0 auto;
  height: var(--sn-header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}
.sn-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}
.sn-logo__text { display: flex; flex-direction: column; line-height: 1.1; }
.sn-logo__text b {
  font-size: 0.92rem;
  letter-spacing: 0.2em;
  font-weight: 700;
}
.sn-logo__text small {
  font-family: var(--sn-display);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  color: var(--sn-mist-dim);
  margin-top: 0.2rem;
}
.sn-nav__list {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.sn-nav__link {
  position: relative;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--sn-mist-dim);
  padding: 0.2rem 0;
}
.sn-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.15rem;
  width: 100%;
  height: 1px;
  background: var(--sn-cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--sn-ease);
}
.sn-nav__link:hover,
.sn-nav__link.is-active { color: var(--sn-ink); }
.sn-nav__link:hover::after,
.sn-nav__link.is-active::after { transform: scaleX(1); }

.sn-nav__toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 0;
  background: transparent;
  padding: 0;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.sn-nav__toggle-line {
  display: block;
  width: 1.2rem;
  height: 1.5px;
  background: var(--sn-ink);
  transition: transform 0.3s var(--sn-ease);
}
.sn-nav__toggle[aria-expanded="true"] .sn-nav__toggle-line:first-child {
  transform: translateY(3.75px) rotate(45deg);
}
.sn-nav__toggle[aria-expanded="true"] .sn-nav__toggle-line:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

.sn-drawer {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 80;
}
.sn-drawer[hidden] { display: none !important; }
.sn-drawer.is-open { display: block; }
.sn-drawer__backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  width: 100%;
  background: rgba(6, 8, 12, 0.62);
  cursor: pointer;
}
.sn-drawer__panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(22rem, 88vw);
  height: 100%;
  background: #0d121a;
  padding: 1.25rem 1.3rem 2rem;
  overflow-y: auto;
  border-left: 1px solid var(--sn-line);
  transform: translateX(100%);
  transition: transform 0.4s var(--sn-ease);
}
.sn-drawer.is-open .sn-drawer__panel { transform: translateX(0); }
.sn-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.4rem;
}
.sn-drawer__brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0;
  font-family: var(--sn-display);
  letter-spacing: 0.16em;
  color: var(--sn-ink);
}
.sn-drawer__close {
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  font-size: 1.6rem;
  color: var(--sn-ink);
  cursor: pointer;
}
.sn-drawer__nav { display: flex; flex-direction: column; }
.sn-drawer__link {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--sn-line);
  font-size: 1.05rem;
  color: var(--sn-mist);
}
.sn-drawer__link small {
  font-family: var(--sn-display);
  font-size: 0.7rem;
  color: var(--sn-cyan);
  letter-spacing: 0.12em;
}
.sn-drawer__link.is-active { color: var(--sn-cyan); }
.sn-drawer__meta {
  margin-top: 1.4rem;
  font-size: 0.78rem;
  color: var(--sn-mist-dim);
  line-height: 1.7;
}
html.sn-nav-open,
html.sn-nav-open body { overflow: hidden; }

/* Hero */
.sn-hero {
  position: relative;
  min-height: calc(100svh - var(--sn-header));
  display: grid;
  align-items: center;
  overflow: hidden;
  padding: clamp(1.2rem, 3vw, 2.2rem) 0 2rem;
  background:
    radial-gradient(ellipse 55% 50% at 78% 42%, rgba(92, 225, 255, 0.16), transparent 68%),
    linear-gradient(160deg, #0A0E14 0%, #10161f 50%, #0c1118 100%);
}
.sn-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(92, 225, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(92, 225, 255, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 70% 70% at 70% 40%, #000 20%, transparent 75%);
  pointer-events: none;
}
.sn-hero__grid {
  width: min(1180px, calc(100% - 2 * var(--sn-gutter)));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(1.2rem, 4vw, 3.2rem);
  align-items: center;
  position: relative;
  z-index: 1;
}
.sn-hero__label {
  margin: 0 0 0.65rem;
  font-family: var(--sn-display);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--sn-cyan);
}
.sn-hero__title { margin: 0; }
.sn-hero__lead {
  margin: 0.85rem 0 0;
  max-width: 28rem;
  color: var(--sn-mist-dim);
  font-size: clamp(0.92rem, 1.4vw, 1.05rem);
}
.sn-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.25rem;
}
.sn-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1.35rem;
}
.sn-chip {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 2.35rem;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--sn-line);
  background: rgba(22, 29, 40, 0.7);
  color: var(--sn-mist-dim);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.sn-chip span {
  font-family: var(--sn-display);
  color: var(--sn-cyan);
  letter-spacing: 0.08em;
}
.sn-chip:hover { border-color: var(--sn-cyan); color: var(--sn-ink); }
.sn-chip.is-active {
  background: var(--sn-cyan);
  border-color: var(--sn-cyan);
  color: var(--sn-navy);
  box-shadow: 0 8px 22px rgba(92, 225, 255, 0.22);
}
.sn-chip.is-active span { color: var(--sn-navy); }

.sn-hero__visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 0;
}
.sn-hero__glow {
  position: absolute;
  width: min(78%, 420px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(92, 225, 255, 0.32) 0%, transparent 68%);
  filter: blur(10px);
  animation: sn-glow 10s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes sn-glow {
  from { transform: scale(0.92); opacity: 0.7; }
  to { transform: scale(1.08); opacity: 1; }
}
.sn-hero__frame {
  position: relative;
  z-index: 1;
  margin: 0;
  width: min(100%, 420px);
  aspect-ratio: 4 / 5;
  max-height: min(62vh, 540px);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--sn-line);
  box-shadow: var(--sn-shadow);
  background: var(--sn-navy-mid);
}
.sn-hero__frame.is-swapping { transform: scale(0.985); }
.sn-hero__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.35s ease;
}
.sn-hero__frame img.is-fade { opacity: 0; }
.sn-hero__callouts {
  position: absolute;
  inset: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  pointer-events: none;
  z-index: 2;
}
.sn-hero__callout {
  position: absolute;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--sn-line-strong);
  background: rgba(10, 14, 20, 0.78);
  color: var(--sn-cyan);
  font-family: var(--sn-display);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  animation: sn-float 5.5s var(--sn-ease) infinite;
}
.sn-hero__callout--a { top: 10%; left: 0; }
.sn-hero__callout--b { top: 44%; right: 0; animation-delay: 0.8s; }
.sn-hero__callout--c { bottom: 12%; left: 6%; animation-delay: 1.4s; }
@keyframes sn-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* Sections */
.sn-section { padding: clamp(3.2rem, 7vw, 5.4rem) 0; }
.sn-head { max-width: 38rem; margin-bottom: 1.8rem; }
.sn-head p:last-child { color: var(--sn-mist-dim); margin: 0.7rem 0 0; }
.sn-head--row {
  max-width: none;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.sn-cats {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 0.9rem;
}
.sn-cat { grid-column: span 3; }
.sn-cat:nth-child(n + 5) { grid-column: span 4; }
.sn-cat {
  display: grid;
  background: var(--sn-navy-mid);
  border: 1px solid var(--sn-line);
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s var(--sn-ease);
}
.sn-cat:hover { border-color: var(--sn-line-strong); transform: translateY(-3px); }
.sn-cat figure { margin: 0; aspect-ratio: 4 / 3; overflow: hidden; }
.sn-cat img { width: 100%; height: 100%; object-fit: cover; }
.sn-cat div { padding: 1rem 1.05rem 1.15rem; }
.sn-cat__num {
  margin: 0 0 0.25rem;
  font-family: var(--sn-display);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--sn-cyan);
}
.sn-cat h3 { margin-bottom: 0.3rem; }
.sn-cat p { margin: 0; font-size: 0.84rem; color: var(--sn-mist-dim); }

.sn-feature {
  background: var(--sn-navy-mid);
  border-block: 1px solid var(--sn-line);
}
.sn-feature__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(1.4rem, 4vw, 3rem);
  align-items: center;
}
.sn-feature__media { margin: 0; overflow: hidden; border: 1px solid var(--sn-line); }
.sn-feature__media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 5 / 4; }
.sn-feature__copy p { color: var(--sn-mist-dim); }
.sn-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem 1rem;
  margin: 1.3rem 0 1.5rem;
}
.sn-specs div {
  padding: 0.7rem 0;
  border-top: 1px solid var(--sn-line);
}
.sn-specs dt {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--sn-cyan);
  font-family: var(--sn-display);
}
.sn-specs dd { margin: 0.15rem 0 0; color: var(--sn-ink); }

.sn-carousel { overflow: hidden; }
.sn-carousel__track {
  display: flex;
  gap: 0.9rem;
  transition: transform 0.5s var(--sn-ease);
}
.sn-carousel__tools { display: flex; gap: 0.4rem; }
.sn-arrival {
  flex: 0 0 min(72%, 260px);
  background: var(--sn-navy-mid);
  border: 1px solid var(--sn-line);
  padding: 0 0 1.1rem;
}
.sn-arrival figure { margin: 0 0 0.85rem; aspect-ratio: 1; overflow: hidden; }
.sn-arrival img { width: 100%; height: 100%; object-fit: cover; }
.sn-arrival__tag,
.sn-arrival h3,
.sn-arrival p,
.sn-arrival b { padding-inline: 1rem; }
.sn-arrival__tag {
  margin: 0;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--sn-cyan);
  font-family: var(--sn-display);
}
.sn-arrival h3 { margin: 0.25rem 0; }
.sn-arrival p { margin: 0; font-size: 0.84rem; color: var(--sn-mist-dim); }
.sn-arrival b { display: block; margin-top: 0.45rem; color: var(--sn-cyan); font-size: 0.92rem; }

.sn-journal {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}
.sn-journal--page { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.sn-card {
  background: var(--sn-navy-mid);
  border: 1px solid var(--sn-line);
  overflow: hidden;
}
.sn-card a,
.sn-card { color: inherit; }
.sn-card figure,
.sn-card__image { margin: 0; aspect-ratio: 16 / 10; overflow: hidden; }
.sn-card img { width: 100%; height: 100%; object-fit: cover; }
.sn-card small,
.sn-card h3,
.sn-card p { display: block; padding-inline: 1.05rem; }
.sn-card small {
  margin-top: 0.95rem;
  font-family: var(--sn-display);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--sn-cyan);
}
.sn-card h3 { margin: 0.35rem 0; }
.sn-card p { margin: 0 0 1.15rem; font-size: 0.86rem; color: var(--sn-mist-dim); }

.sn-qa { display: grid; gap: 0.55rem; }
.sn-qa__row {
  border: 1px solid var(--sn-line);
  background: var(--sn-navy-mid);
  padding: 0;
}
.sn-qa__row summary {
  list-style: none;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.85rem;
  align-items: center;
  padding: 1rem 1.1rem;
  cursor: pointer;
}
.sn-qa__row summary::-webkit-details-marker { display: none; }
.sn-qa__id {
  font-family: var(--sn-display);
  font-size: 0.72rem;
  color: var(--sn-cyan);
  letter-spacing: 0.1em;
}
.sn-qa__q { color: var(--sn-ink); }
.sn-qa__toggle {
  width: 0.7rem;
  height: 0.7rem;
  border-right: 1px solid var(--sn-cyan);
  border-bottom: 1px solid var(--sn-cyan);
  transform: rotate(45deg);
  transition: transform 0.25s ease;
}
.sn-qa__row[open] .sn-qa__toggle { transform: rotate(225deg); }
.sn-qa__row p {
  margin: 0;
  padding: 0 1.1rem 1.1rem 3.2rem;
  color: var(--sn-mist-dim);
}

.sn-visit {
  padding: clamp(3.2rem, 7vw, 5.4rem) 0;
  background:
    radial-gradient(ellipse 50% 60% at 12% 50%, rgba(92, 225, 255, 0.08), transparent 60%),
    var(--sn-navy);
}
.sn-visit__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(1.4rem, 4vw, 3rem);
  align-items: center;
}
.sn-visit__media { margin: 0; overflow: hidden; border: 1px solid var(--sn-line); }
.sn-visit__media img { width: 100%; aspect-ratio: 5 / 4; object-fit: cover; }
.sn-visit address { margin: 1rem 0; color: var(--sn-mist); }
.sn-visit address a { color: var(--sn-cyan); }

/* Inner pages */
.sn-pagehead {
  position: relative;
  min-height: 42vh;
  display: grid;
  align-items: end;
  padding: 4.5rem 0 2.4rem;
  background:
    linear-gradient(180deg, rgba(10, 14, 20, 0.35), rgba(10, 14, 20, 0.88)),
    var(--sn-image) center / cover no-repeat;
}
.sn-pagehead p { max-width: 34rem; color: var(--sn-mist); }

.sn-split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  min-height: 62vh;
}
.sn-split--flip { grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr); }
.sn-split--flip .sn-split__copy { order: -1; }
.sn-split__image { margin: 0; min-height: 320px; }
.sn-split__image img { width: 100%; height: 100%; object-fit: cover; }
.sn-split__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.8rem, 5vw, 3.4rem);
  background: var(--sn-navy-mid);
}
.sn-split__copy p { color: var(--sn-mist-dim); }

.sn-manifesto {
  font-family: var(--sn-display);
  font-size: clamp(1.35rem, 3vw, 2rem);
  line-height: 1.7;
  color: var(--sn-ink);
  margin: 0.4rem 0 0;
}
.sn-manifesto em { font-style: normal; color: var(--sn-cyan); }

.sn-three {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}
.sn-three article {
  padding: 1.25rem 1.15rem;
  border: 1px solid var(--sn-line);
  background: var(--sn-navy-mid);
}
.sn-three span {
  font-family: var(--sn-display);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--sn-cyan);
}
.sn-three h3 { margin: 0.45rem 0; }
.sn-three p { margin: 0; color: var(--sn-mist-dim); font-size: 0.9rem; }

.sn-service-list { padding: 2.4rem 0 3.5rem; }
.sn-service {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(1.2rem, 3.5vw, 2.6rem);
  align-items: center;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--sn-line);
}
.sn-service:nth-child(even) { direction: rtl; }
.sn-service:nth-child(even) > * { direction: ltr; }
.sn-service figure { margin: 0; overflow: hidden; border: 1px solid var(--sn-line); }
.sn-service img { width: 100%; aspect-ratio: 5 / 4; object-fit: cover; }
.sn-service small { display: block; margin: 0.7rem 0 1rem; color: var(--sn-mist-dim); }

.sn-editorial { padding: 4.6rem 0 1.2rem; }
.sn-editorial p { max-width: 32rem; color: var(--sn-mist-dim); }

.sn-contact {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(1.6rem, 4vw, 3rem);
}
.sn-contact address { margin: 1rem 0; }
.sn-contact a { color: var(--sn-cyan); }

.sn-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem 0.8rem;
}
.sn-form label { display: grid; gap: 0.35rem; font-size: 0.8rem; color: var(--sn-mist-dim); }
.sn-form input,
.sn-form select,
.sn-form textarea {
  width: 100%;
  background: var(--sn-navy);
  border: 1px solid var(--sn-line);
  padding: 0.7rem 0.8rem;
  color: var(--sn-ink);
  border-radius: 2px;
}
.sn-form input:focus,
.sn-form select:focus,
.sn-form textarea:focus {
  outline: 1px solid var(--sn-cyan);
  border-color: var(--sn-cyan);
}
.sn-wide { grid-column: 1 / -1; }
.sn-form label span { display: flex; align-items: center; gap: 0.45rem; }
.sn-success {
  padding: 1.2rem;
  border: 1px solid var(--sn-line-strong);
  background: var(--sn-cyan-soft);
}

.sn-not-found {
  min-height: calc(100svh - var(--sn-header) - 12rem);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 4rem var(--sn-gutter);
}
.sn-not-found b {
  font-size: clamp(4rem, 12vw, 8rem);
  color: var(--sn-cyan);
  line-height: 0.9;
}
.sn-not-found h1 { margin: 0.6rem 0 0.8rem; }

/* Footer */
.sn-footer {
  border-top: 1px solid var(--sn-line);
  padding: 2.6rem 0 1.4rem;
  background: #070a0f;
}
.sn-footer__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 0.8fr;
  gap: 1.6rem;
}
.sn-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--sn-display);
  letter-spacing: 0.16em;
  color: var(--sn-ink);
  margin-bottom: 0.6rem;
}
.sn-footer p { margin: 0.35rem 0; color: var(--sn-mist-dim); }
.sn-footer__jp { font-size: 0.8rem; }
.sn-footer address a { color: var(--sn-cyan); }
.sn-footer nav { display: flex; flex-direction: column; gap: 0.45rem; }
.sn-footer nav a:hover { color: var(--sn-cyan); }
.sn-footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.8rem;
  padding-top: 1rem;
  border-top: 1px solid var(--sn-line);
  font-size: 0.76rem;
  color: var(--sn-mist-dim);
}

@media (max-width: 980px) {
  .sn-nav { display: none; }
  .sn-nav__toggle { display: flex; }
  .sn-hero__grid,
  .sn-feature__grid,
  .sn-visit__grid,
  .sn-split,
  .sn-split--flip,
  .sn-contact,
  .sn-service,
  .sn-footer__grid {
    grid-template-columns: 1fr;
  }
  .sn-split--flip .sn-split__copy { order: 0; }
  .sn-service:nth-child(even) { direction: ltr; }
  .sn-cats { grid-template-columns: 1fr 1fr; }
  .sn-cat,
  .sn-cat:nth-child(n + 5) { grid-column: auto; }
  .sn-journal,
  .sn-journal--page,
  .sn-three { grid-template-columns: 1fr 1fr; }
  .sn-hero { min-height: 0; padding-top: 1.4rem; }
  .sn-hero__frame { max-height: 48vh; }
}

.sn-stats { padding: 2.4rem 0 1rem; }
.sn-stats__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  padding: 1.1rem;
  border: 1px solid rgba(92, 225, 255, 0.16);
  border-radius: 1.1rem;
  background: rgba(10, 14, 20, 0.55);
}
.sn-stat { text-align: center; }
.sn-stat__value {
  margin: 0;
  font-family: Outfit, "Noto Sans JP", sans-serif;
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  color: #5CE1FF;
  letter-spacing: 0.04em;
}
.sn-stat__label { margin: 0.35rem 0 0; font-size: 0.72rem; color: rgba(215, 230, 245, 0.58); }
.sn-marquee {
  overflow: hidden;
  border-block: 1px solid rgba(92, 225, 255, 0.16);
  margin: 1.5rem 0 0;
  padding: 0.85rem 0;
}
.sn-marquee__track {
  display: flex; gap: 1.2rem; width: max-content;
  animation: sn-marquee 28s linear infinite;
  font-size: 0.78rem; color: rgba(215, 230, 245, 0.7); white-space: nowrap;
}
.sn-marquee i { color: #5CE1FF; font-style: normal; opacity: 0.6; }
@keyframes sn-marquee { to { transform: translateX(-50%); } }
html, body { max-width: 100%; overflow-x: hidden; }

@media (max-width: 720px) {
  .sn-stats__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .sn-cats,
  .sn-journal,
  .sn-journal--page,
  .sn-three,
  .sn-form,
  .sn-footer__bottom { grid-template-columns: 1fr; }
  .sn-cat,
  .sn-cat:nth-child(n + 5) { grid-column: auto; }
  .sn-footer__bottom { flex-direction: column; }
  .sn-hero__title { font-size: clamp(1.7rem, 8vw, 2.2rem); }
  .sn-qa__row p { padding-left: 1.1rem; }
  .sn-hero__chips { flex-wrap: wrap; }
  .sn-btn { min-height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  .sn-logo__pulse,
  .sn-hero__glow,
  .sn-hero__callout { animation: none !important; }
  .sn-marquee__track { animation: none; }
}