:root {
  --n3-header-height: 48px;
  --n3-nav-bg: rgba(15, 20, 27, 0.96);
  --n3-drawer-bg: #151c24;
  --n3-footer-bg: #10161d;
  --n3-text: #e8edf2;
  --n3-muted: #9aa8b4;
  --n3-accent: #62e6a7;
  --n3-link: #9fd9bd;
  --n3-border: rgba(255, 255, 255, 0.08);
  --n3-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
}

.n3-site-header,
.n3-site-header *,
.n3-drawer-overlay,
.n3-drawer,
.n3-drawer *,
.n3-site-footer,
.n3-site-footer *,
.n3-egov-info,
.n3-egov-info * {
  box-sizing: border-box;
}

.n3-site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  height: var(--n3-header-height);
  background: var(--n3-nav-bg);
  border-bottom: 1px solid var(--n3-border);
  box-shadow: var(--n3-shadow);
  color: var(--n3-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  backdrop-filter: saturate(120%) blur(8px);
}

.n3-site-header__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  height: 100%;
  padding: 0 14px;
}

.n3-site-brand {
  flex: 0 0 auto;
  color: var(--n3-accent) !important;
  text-decoration: none !important;
  font-size: 14px;
  font-weight: 850;
  letter-spacing: -0.015em;
  white-space: nowrap;
}

.n3-site-brand:hover,
.n3-site-brand:focus-visible {
  color: #8ff0bf !important;
  outline: none;
}

.n3-site-separator {
  flex: 0 0 auto;
  color: #72808d;
  font-size: 13px;
}

.n3-current-page {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  color: var(--n3-text);
  font-size: 13px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.n3-contents-button,
.n3-drawer-close {
  appearance: none;
  border: 1px solid rgba(98, 230, 167, 0.45);
  color: var(--n3-text);
  background: transparent;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.n3-contents-button {
  flex: 0 0 auto;
  min-height: 34px;
  padding: 5px 10px;
  border-radius: 9px;
  font-size: 11px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.n3-contents-button:hover,
.n3-contents-button:focus-visible,
.n3-drawer-close:hover,
.n3-drawer-close:focus-visible {
  border-color: var(--n3-accent);
  background: rgba(98, 230, 167, 0.08);
  outline: none;
}

.n3-drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: 1100;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  background: rgba(0, 0, 0, 0.55);
  transition: opacity 180ms ease, visibility 0s linear 180ms;
}

.n3-drawer-overlay.is-open {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transition-delay: 0s;
}

.n3-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 1200;
  display: flex;
  flex-direction: column;
  width: 320px;
  max-width: 100%;
  height: 100vh;
  height: 100dvh;
  padding: max(16px, env(safe-area-inset-top)) 14px max(16px, env(safe-area-inset-bottom));
  color: var(--n3-text);
  background: var(--n3-drawer-bg);
  border-left: 1px solid var(--n3-border);
  box-shadow: -18px 0 45px rgba(0, 0, 0, 0.35);
  transform: translateX(100%);
  visibility: hidden;
  transition: transform 220ms ease, visibility 0s linear 220ms;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
}

.n3-drawer.is-open {
  visibility: visible;
  transform: translateX(0);
  transition-delay: 0s;
}

.n3-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 2px 12px;
  border-bottom: 1px solid var(--n3-border);
}

.n3-drawer__title {
  margin: 0;
  color: var(--n3-text);
  font-size: 14px;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.n3-drawer-close {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 9px;
  font-size: 22px;
  line-height: 1;
}

.n3-drawer-nav {
  display: grid;
  gap: 22px;
  margin-top: 12px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.n3-drawer-home {
  display: grid;
  gap: 4px;
}

.n3-drawer-link--top {
  font-weight: 850;
}

.n3-drawer-group {
  display: grid;
  gap: 4px;
}

.n3-drawer-category {
  margin: 0 2px 6px;
  padding: 0 10px 8px;
  color: var(--n3-accent);
  border-bottom: 1px solid var(--n3-border);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.16em;
  line-height: 1.35;
}

.n3-drawer-link {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 12px 10px 15px;
  border-radius: 10px;
  color: #dce5eb !important;
  background: transparent;
  text-decoration: none !important;
  font-size: 13px;
  font-weight: 750;
  line-height: 1.35;
}

.n3-drawer-link:hover,
.n3-drawer-link:focus-visible {
  color: #fff !important;
  background: rgba(255, 255, 255, 0.045);
  outline: none;
}

.n3-drawer-link[aria-current="page"] {
  color: #fff !important;
  background: rgba(98, 230, 167, 0.08);
}

.n3-drawer-link[aria-current="page"]::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 0;
  width: 3px;
  border-radius: 99px;
  background: var(--n3-accent);
}

.n3-site-footer {
  display: block;
  width: 100%;
  min-width: 0;
  max-width: none;
  margin: 0;
  padding: 12px 8px;
  color: var(--n3-muted);
  background: var(--n3-footer-bg);
  border-top: 1px solid var(--n3-border);
  text-align: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
}

.n3-site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  gap: clamp(5px, 1.6vw, 14px);
  width: 100%;
  min-width: 0;
  margin: 0 auto;
  white-space: nowrap;
}

.n3-site-footer__brand,
.n3-site-footer__copyright {
  flex: 0 1 auto;
  min-width: 0;
  margin: 0;
  line-height: 1.25;
}

.n3-site-footer__brand {
  color: #c7d0d8;
  font-size: clamp(9px, 2.4vw, 13px);
}

.n3-site-footer__brand a {
  color: #dce6ec !important;
  text-decoration: none !important;
  font-weight: 800;
}

.n3-site-footer__links {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  gap: clamp(6px, 1.4vw, 12px);
  margin: 0;
  font-size: clamp(9px, 2.25vw, 12px);
  white-space: nowrap;
}

.n3-site-footer__links a {
  color: var(--n3-link) !important;
  text-decoration: none !important;
}

.n3-site-footer__links a:hover,
.n3-site-footer__links a:focus-visible,
.n3-site-footer__brand a:hover,
.n3-site-footer__brand a:focus-visible {
  color: var(--n3-accent) !important;
  outline: none;
}

.n3-site-footer__copyright {
  color: #7f8c97;
  font-size: clamp(9px, 2.25vw, 12px);
}

.n3-egov-info {
  display: block;
  width: 100%;
  max-width: none;
  margin: 10px 0 0;
  padding: 8px 12px;
  color: #aeb9c2;
  background: transparent;
  border: 0;
  border-radius: 0;
  text-align: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  font-size: 11px;
  line-height: 1.45;
}

.n3-egov-info p {
  margin: 0;
  white-space: nowrap;
}

.n3-egov-info a {
  color: var(--n3-link) !important;
  text-decoration: none !important;
}

.n3-egov-info a:hover,
.n3-egov-info a:focus-visible {
  color: var(--n3-accent) !important;
  outline: none;
}

@media (max-width: 600px) {
  .n3-egov-info {
    padding-inline: 8px;
    font-size: 10px;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .n3-egov-info::-webkit-scrollbar {
    display: none;
  }
}

.n3-noscript {
  display: block;
  padding: 8px 12px;
  color: #dce5eb;
  background: #111820;
  border-bottom: 1px solid var(--n3-border);
  text-align: center;
  font: 700 12px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.n3-noscript a {
  color: var(--n3-accent);
}

.n3-app-viewport {
  min-height: calc(100dvh - var(--n3-header-height));
}

@media (max-width: 600px) {
  .n3-site-header__inner {
    gap: 8px;
    padding-inline: 10px;
  }

  .n3-site-brand {
    font-size: 13px;
  }

  .n3-site-separator,
  .n3-current-page {
    font-size: 12px;
  }

  .n3-contents-button {
    padding-inline: 8px;
    font-size: 10px;
  }

  .n3-drawer {
    width: min(88vw, 340px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .n3-drawer,
  .n3-drawer-overlay {
    transition-duration: 1ms !important;
  }
}

@media print {
  .n3-site-header,
  .n3-drawer,
  .n3-drawer-overlay,
  .n3-noscript {
    display: none !important;
  }
}

/* ABOUT Neko3SE / LAB NOTE shared visual language */
.n3-about-page {
  min-height: 100vh;
  background: radial-gradient(circle at 10% 0%, rgba(98, 230, 167, 0.09), transparent 30rem), #0f141b;
  color: #edf2f7;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.75;
}
.n3-about-main { width:min(calc(100% - 40px), 960px); margin:0 auto; padding:64px 0 84px; }
.n3-about-hero { padding:42px 0 48px; border-bottom:1px solid var(--n3-border); }
.n3-about-eyebrow,.n3-about-number { margin:0; color:var(--n3-accent); font-size:12px; font-weight:800; letter-spacing:.16em; }
.n3-about-title { margin:8px 0 18px; font-size:clamp(42px,8vw,76px); line-height:1; letter-spacing:-.045em; }
.n3-about-cat { display:inline-block; margin-left:.18em; font-size:.48em; vertical-align:.16em; }
.n3-about-lead { max-width:760px; margin:0; color:#c4ced8; font-size:clamp(17px,2.3vw,22px); }
.n3-about-subline { margin:18px 0 0; color:#9aa8b4; font-size:13px; font-weight:750; letter-spacing:.06em; }
.n3-about-language { display:flex; justify-content:flex-end; margin-top:22px; }
.n3-about-language button { appearance:none; border:1px solid rgba(98,230,167,.45); border-radius:999px; background:transparent; color:#edf2f7; padding:6px 12px; font:inherit; font-size:.82rem; font-weight:700; cursor:pointer; }
.n3-about-language button:hover,.n3-about-language button:focus-visible { border-color:var(--n3-accent); background:rgba(98,230,167,.08); outline:none; }
.n3-about-section { padding:42px 0; border-bottom:1px solid var(--n3-border); }
.n3-about-section h2 { margin:7px 0 14px; font-size:clamp(26px,4vw,38px); line-height:1.25; }
.n3-about-section p { margin:0 0 14px; color:#b8c3cc; }
.n3-about-cycle { margin:26px 0; padding:16px 18px; border:1px solid rgba(98,230,167,.22); border-radius:14px; color:#dfe8ee; font-weight:800; letter-spacing:.035em; overflow-wrap:anywhere; }
.n3-about-duo { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-top:24px; }
.n3-about-card { padding:22px; border:1px solid var(--n3-border); border-radius:16px; background:#171e27; }
.n3-about-card h3 { margin:0 0 12px; color:var(--n3-accent); font-size:14px; letter-spacing:.1em; }
.n3-about-card ul { margin:0; padding-left:1.2em; color:#b8c3cc; }
.n3-about-tags { display:flex; flex-wrap:wrap; gap:9px; margin-top:20px; }
.n3-about-tag { padding:7px 10px; border:1px solid rgba(98,230,167,.28); border-radius:999px; color:#cfe4d9; font-size:12px; font-weight:750; }
.n3-about-connect { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:20px; }
.n3-about-link { display:block; padding:18px; border:1px solid var(--n3-border); border-radius:14px; background:#171e27; color:#edf2f7 !important; text-decoration:none !important; }
.n3-about-link strong { display:block; color:var(--n3-accent); }
.n3-about-link span { display:block; margin-top:4px; color:#9aa8b4; font-size:13px; overflow-wrap:anywhere; }
.n3-about-link:hover,.n3-about-link:focus-visible { border-color:rgba(98,230,167,.55); outline:none; }
.n3-about-home-link { display:inline-flex; align-items:center; gap:8px; margin-top:18px; color:var(--n3-link) !important; font-weight:800; text-decoration:none !important; }
.n3-about-home-link:hover,.n3-about-home-link:focus-visible { color:var(--n3-accent) !important; outline:none; }
.n3-drawer-about { margin-top:6px; padding-top:12px; border-top:1px solid var(--n3-border); }
@media (max-width:600px) { .n3-about-main{width:min(calc(100% - 28px),960px);padding-top:38px}.n3-about-duo,.n3-about-connect{grid-template-columns:1fr}.n3-about-cycle{font-size:13px}.n3-about-title{font-size:clamp(38px,13vw,58px)} }

/* LAB NOTE --------------------------------------------------------------- */
body > .n3-labnote{width:min(1160px,calc(100% - 28px));margin-left:auto;margin-right:auto}
.n3-labnote{margin:72px 0 24px;padding:42px 0 8px;border-top:1px solid rgba(103,232,146,.32);color:#edf6f3}.n3-labnote-head{padding-bottom:28px}.n3-labnote-kicker,.n3-labnote-index,.n3-labnote-theme-label{margin:0;color:#67e892;font-size:.7rem;font-weight:850;letter-spacing:.16em}.n3-labnote-head h2{margin:8px 0 26px;font-size:clamp(1.8rem,5vw,3rem);letter-spacing:-.025em}.n3-labnote-theme-label{color:#93aaa5;font-size:.62rem}.n3-labnote-theme{margin:7px 0 0;font-size:clamp(1.05rem,3vw,1.45rem);font-weight:850;letter-spacing:.04em}.n3-labnote-theme span{color:#67e892}.n3-labnote-section{padding:30px 0;border-top:1px solid rgba(147,170,165,.18)}.n3-labnote-section h3{margin:7px 0 18px;font-size:clamp(1.25rem,4vw,1.65rem)}.n3-labnote-section p{max-width:850px;line-height:1.85;color:#cbd9d5}.n3-labnote-tags{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0}.n3-labnote-tags span{border:1px solid rgba(103,232,146,.32);border-radius:999px;padding:7px 10px;color:#a3f3bf;background:rgba(103,232,146,.045);font-size:.68rem;font-weight:800;letter-spacing:.05em}.n3-labnote-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:20px}.n3-labnote-links a{display:flex;min-width:0;min-height:142px;flex-direction:column;padding:18px;border:1px solid rgba(103,232,146,.28);border-radius:14px;background:rgba(103,232,146,.035);color:#edf6f3;text-decoration:none;transition:border-color .15s ease,background .15s ease}.n3-labnote-links a:hover,.n3-labnote-links a:focus-visible{border-color:#67e892;background:rgba(103,232,146,.075)}.n3-labnote-links strong{color:#67e892;font-size:.75rem;letter-spacing:.09em}.n3-labnote-links span{margin-top:9px;color:#cbd9d5;line-height:1.6}.n3-labnote-links em{margin-top:auto;padding-top:16px;color:#a3f3bf;font-style:normal;font-weight:800}.n3-labnote-en{display:none}html[lang="en"] .n3-labnote-ja{display:none}html[lang="en"] .n3-labnote-en{display:block}html[lang="en"] span.n3-labnote-en{display:inline}@media(max-width:640px){.n3-labnote{margin-top:56px;padding-top:34px}.n3-labnote-links{grid-template-columns:1fr}.n3-labnote-links a{min-height:128px}}