:root {
  --c-base: #eef1ef;
  --c-card: #ffffff;
  --c-text: #343a40;
  --c-main: #01B202;
  --c-soft: #d9f6d9;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --border: 1px solid rgba(36, 41, 47, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding-top: 72px;
  padding-bottom: 0;
  color: #3f464d;
  background: var(--c-base);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}
button, input { font: inherit; }
button { color: inherit; }
a { color: inherit; }
code, kbd, .command-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
.shell { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 100; padding: 12px 16px; background: var(--c-text); color: white; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important; }
:focus-visible { outline: 3px solid var(--c-main); outline-offset: 3px; }

.site-header { position: fixed; top: 0; right: 0; left: 0; z-index: 50; background: var(--c-card); border-bottom: var(--border); }
.nav { position: relative; min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav.shell { width: calc(100% - 32px); max-width: none; }
.brand { min-height: 44px; display: inline-flex; flex-shrink: 0; align-items: center; gap: 12px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.brand-mark { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 10px; background: var(--c-main); color: white; }
.brand-tagline { color:var(--c-main); font-size:14px; }
.nav-toggle { width:44px; height:44px; display:none; place-content:center; gap:5px; padding:0; border:0; border-radius:10px; background:var(--c-main); cursor:pointer; }
.nav-toggle span { width:20px; height:2px; display:block; border-radius:999px; background:var(--c-card); transition:transform .24s ease,opacity .2s ease; }
.nav.is-open .nav-toggle span:nth-child(1) { transform:translateY(7px) rotate(45deg); }
.nav.is-open .nav-toggle span:nth-child(2) { opacity:0; }
.nav.is-open .nav-toggle span:nth-child(3) { transform:translateY(-7px) rotate(-45deg); }
.header-menus { display: flex; align-items: center; gap: 8px; }
.reason-link { min-height:44px; display:inline-flex; align-items:center; margin-right:12px; padding:8px; color:var(--c-main); font-size:12px; font-weight:700; text-decoration:none; white-space:nowrap; }
.reason-link:hover { text-decoration:underline; text-underline-offset:4px; }
.shortcut-link { min-height:44px; display:inline-flex; align-items:center; margin-right:4px; padding:8px; color:var(--c-main); font-size:12px; font-weight:700; text-decoration:none; white-space:nowrap; }
.shortcut-link:hover { text-decoration:underline; text-underline-offset:4px; }
.menu-label-short { display: none; }
.app-menu { position: relative; }
.app-menu-toggle { min-height: 44px; display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; border: var(--border); border-radius: 999px; background: var(--c-card); cursor: pointer; font-size:12px; font-weight: 700; white-space: nowrap; }
.app-menu-toggle:hover, .app-menu.is-open .app-menu-toggle { border-color: var(--c-main); background: var(--c-soft); }
.app-menu-toggle svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 2; }
.app-menu-toggle .menu-icon { width:20px; height:20px; }
.app-menu-toggle .menu-chevron { transition:transform .2s ease; }
.creator-icon { width:28px; height:28px; display:block; object-fit:contain; border-radius:50%; }
.app-menu:hover .menu-chevron, .app-menu.is-open .menu-chevron { transform: rotate(180deg); }
.app-menu-panel { position: absolute; top: 100%; right: 0; width: min(920px, calc(100vw - 48px)); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; max-height: min(620px, calc(100vh - 88px)); padding: 24px; overflow-y: auto; border: var(--border); border-radius: var(--radius-md); background: var(--c-card); opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-6px); transition: opacity .22s ease, transform .22s ease, visibility .22s ease; }
.creator-menu-panel { width: min(620px, calc(100vw - 48px)); grid-template-columns: repeat(2, minmax(0, 1fr)); }
.app-menu:hover .app-menu-panel, .app-menu.is-open .app-menu-panel { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }
.app-menu-group { min-width: 0; }
.app-menu-group h2 { margin: 0 0 8px; padding-bottom: 8px; border-bottom: 2px solid var(--c-main); color: var(--c-main); font-size: 14px; line-height: 1.5; }
.app-menu-group a { min-height: 44px; display: flex; align-items: center; padding: 8px; border-bottom: var(--border); font-size: 14px; font-weight: 700; line-height: 1.5; text-decoration: none; }
.app-menu-group a:hover, .app-menu-group a:focus-visible { background: var(--c-soft); color: var(--c-main); }
.hero { width:min(1120px,calc(100% - 48px)); margin:0 auto 24px; overflow:hidden; border:0; border-radius:0 0 var(--radius-md) var(--radius-md); background:var(--c-card); }
.hero-visual { position:relative; display:grid; grid-template-columns:1fr 1fr; height:clamp(260px,33vh,340px); overflow:hidden; }
.hero-person { width:100%; height:100%; min-height:0; display:block; object-fit:contain; }
.hero-person-left { object-position:left center; }
.hero-person-right { object-position:right center; }
.hero-terminal { position:absolute; top:50%; left:50%; z-index:2; width:min(36%,420px); min-width:280px; overflow:hidden; border:2px solid var(--c-text); border-radius:12px; background:var(--c-text); color:var(--c-card); transform:translate(-50%,-50%); }
.terminal-titlebar { height:32px; display:flex; align-items:center; gap:6px; padding:0 12px; border-bottom:1px solid rgba(255,255,255,.24); }
.terminal-titlebar span { width:8px; height:8px; border-radius:50%; background:var(--c-main); }
.hero-copy { min-width:0; padding:20px 24px 24px; text-align:left; }
.terminal-prompt { display:block; margin-bottom:8px; color:var(--c-soft); font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace; font-size:12px; }
.hero-copy h1 { margin: 0; color:var(--c-card); font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace; font-size: clamp(18px, 2vw, 28px); line-height: 1.5; letter-spacing: -.03em; }
.hero-copy h1 span { white-space: nowrap; }
.hero-copy h1.is-typing::after { content: ""; display: inline-block; width: 3px; height: .9em; margin-left: 5px; background: var(--c-main); vertical-align: -.08em; animation: cursor-blink .7s steps(1) infinite; }
.hero-cta { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; margin-top: 24px; padding: 10px 24px; border: 2px solid var(--c-main); border-radius: 999px; background: var(--c-main); color: var(--c-card); font-weight: 700; text-decoration: none; white-space: nowrap; animation: cta-in .55s 2s ease both; }
.hero-cta:hover { background: var(--c-card); color: var(--c-main); }

.eyebrow { margin: 0 0 8px; color: var(--c-main); font-size: 12px; font-weight: 700; letter-spacing: .12em; }
h1, h2, h3, p { overflow-wrap: normal; word-break: normal; }
h1 { margin: 0; font-size: 32px; line-height: 1.35; letter-spacing: -.02em; }

.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: 24px; }
.section-heading h2 { margin: 0; font-size: 32px; line-height: 1.35; }
.section-heading > p { max-width: 480px; margin: 0; }

.dictionary { padding-block: 48px 80px; background:var(--c-base); border-bottom:var(--border); scroll-margin-top:16px; }
.learning-invite { display:flex; align-items:center; justify-content:space-between; gap:24px; margin:0; padding:20px 24px; border:0; border-top:1px solid rgba(1,178,2,.14); border-radius:0; background:var(--c-card); }
.learning-invite p { margin: 4px 0 0; font-size: 14px; }
.learning-invite a { min-height: 44px; display: inline-flex; flex-shrink: 0; align-items: center; padding: 8px 16px; border-radius: 999px; background: var(--c-main); color: var(--c-card); font-weight: 700; text-decoration: none; }
.learning-actions { display: flex; flex-shrink: 0; gap: 8px; }
.learning-actions a { gap:8px; }
.learning-actions svg { width:20px; height:20px; fill:none; stroke:currentColor; stroke-linecap:round; stroke-linejoin:round; stroke-width:1.8; }
.learning-actions a:last-child { border: 2px solid var(--c-main); background: var(--c-card); color: var(--c-main); }
.filter-disclosure { margin: 16px 0 0; border-top: var(--border); }
.filter-heading { margin: 0; padding: 16px 0 4px; color: var(--c-text) !important; font-size: 16px !important; font-weight: 700; }
.filter-panel { display: grid; grid-template-columns: 1.3fr 1fr; gap: 16px 24px; padding: 12px 0 4px; }
.purpose-filter { grid-column: 1 / -1; padding-bottom: 24px; border-bottom: var(--border); }
fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
legend { margin-bottom: 8px; font-size: 12px; font-weight: 700; }
.filter-row { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-button { min-height: 44px; padding: 8px 16px; border: var(--border); border-radius: 999px; background: var(--c-card); cursor: pointer; font-weight: 700; }
.filter-button.is-active { border-color: var(--c-main); background: var(--c-soft); color: var(--c-text); }
.command-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.command-card { min-width: 0; display: flex; flex-direction: column; padding: 24px; border: var(--border); border-radius: var(--radius-md); background: var(--c-card); }
.command-card:hover { border-color: var(--c-main); }
.card-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.tag { padding: 4px 8px; border-radius: 999px; background: var(--c-base); font-size: 12px; font-weight: 700; }
.tag.category { background: var(--c-soft); }
.tag.danger { border: 1px solid var(--c-text); background: var(--c-card); }
.command-card h3 { margin: 0 0 8px; font-size: 20px; line-height: 1.45; }
.command-card > p { margin: 0 0 16px; font-size: 14px; }
.code-box { display: grid; grid-template-columns: minmax(0, 1fr) 44px; gap: 8px; margin-top: auto; padding: 12px 8px 12px 16px; border-radius: var(--radius-sm); background: var(--c-text); color: white; }
.command-code { min-width: 0; align-self: center; overflow-x: auto; white-space: nowrap; font-size: 14px; }
.copy-button { width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.4); border-radius: 8px; background: transparent; color: white; cursor: pointer; font-weight: 700; }
.copy-button svg { display: block; width: 20px; height: 20px; margin: auto; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.8; }
details { margin-top: 16px; border-top: var(--border); }
summary { min-height: 44px; display: flex; align-items: center; cursor: pointer; color: var(--c-main); font-weight: 700; }
.detail-body { font-size: 14px; }
.detail-body p { margin: 8px 0; }
.detail-body code { white-space: nowrap; }
.caution { padding: 12px; border-left: 4px solid var(--c-main); background: var(--c-soft); }
.empty-state { padding: 64px 24px; text-align: center; }
.empty-title { margin: 0; font-size: 24px; font-weight: 700; }
.primary-button { min-height: 44px; margin-top: 16px; padding: 8px 20px; border: 0; border-radius: 8px; background: var(--c-main); color: white; cursor: pointer; font-weight: 700; }

.safety { display: grid; grid-template-columns: 56px 1fr; gap: 24px; align-items: start; margin-block: 64px; padding: 32px; border: 2px solid var(--c-main); border-radius: var(--radius-md); background: var(--c-card); }
.safety-mark { display: grid; place-items: center; width: 56px; height: 56px; border-radius: 50%; background: var(--c-soft); color: var(--c-main); font-size: 32px; font-weight: 700; }
.safety h2 { margin: 0 0 8px; font-size: 24px; }
.safety p { margin: 0; }
.safety code { white-space: nowrap; }
.site-footer { border-top: var(--border); background: var(--c-card); }
.footer-inner { display: flex; justify-content: space-between; gap: 32px; padding-block: 32px; font-size: 12px; }
.footer-inner p { margin: 0; }
.toast { position: fixed; left: 50%; bottom: 64px; z-index: 50; transform: translateX(-50%); padding: 12px 20px; border-radius: 8px; background: var(--c-text); color: white; font-weight: 700; }
.search-dock { position: fixed; right: 0; bottom: 0; left: 0; z-index: 40; border-top: var(--border); background: var(--c-card); }
.sidebar-collapse { display:none; }
.search-dock-toggle { width: 100%; min-height: 48px; border: 0; background: var(--c-card); color: var(--c-main); cursor: pointer; font-weight: 700; }
.search-dock-panel { display: block; width: min(900px, calc(100% - 32px)); max-height: 0; margin-inline: auto; padding: 0; overflow: hidden; opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(12px); transition: max-height .4s ease, padding .4s ease, opacity .25s ease, transform .4s ease, visibility .4s ease; }
.search-dock.is-open .search-dock-toggle { display: none; }
.search-dock.is-open .search-dock-panel { max-height: min(72vh, 640px); padding: 16px 0 20px; overflow-y: auto; opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }
.search-dock-panel label { display: block; margin-bottom: 8px; font-weight: 700; }
.search-dock-control { display: grid; grid-template-columns: 1fr auto auto; gap: 8px; }
.search-dock-control input { min-width: 0; min-height: 48px; padding: 8px 12px; border: 2px solid var(--c-text); border-radius: var(--radius-sm); }
.search-dock-control button { min-height: 48px; padding: 8px 16px; border: 0; border-radius: var(--radius-sm); background: var(--c-main); color: var(--c-card); cursor: pointer; font-weight: 700; }
.search-dock-control button:last-child { padding-inline: 16px; background: var(--c-text); }
.search-dock-panel > p { margin: 8px 0 0; color: var(--c-main); font-size: 14px; font-weight: 700; }

@media (min-width: 901px) {
  body { padding-left: 320px; }
  .search-dock { transition: transform .28s ease; }
  body.sidebar-collapsed { padding-left: 0; }
  .search-dock { top: 72px; right: auto; width: 320px; border-top: 0; border-right: var(--border); background:#eefbee; }
  body.sidebar-collapsed .search-dock { transform: translateX(-320px); }
  .sidebar-collapse { position:absolute; top:16px; right:-22px; z-index:2; width:44px; height:44px; min-height:44px; display:grid; place-items:center; border:var(--border); border-radius:50%; background:var(--c-card); color:transparent; cursor:pointer; font-size:0; font-weight:700; transition:transform .28s ease, background .2s ease, height .28s ease, border-radius .28s ease; }
  .sidebar-collapse::before { content:"‹"; color:var(--c-main); font-size:24px; line-height:1; transform:translateY(0); }
  .sidebar-collapse:hover { background:var(--c-soft); }
  body.sidebar-collapsed .sidebar-collapse { height:112px; transform:translateX(22px); border-color:transparent; border-radius:0 14px 14px 0; background:var(--c-main); }
  body.sidebar-collapsed .sidebar-collapse::before { content:"検索する"; color:var(--c-card); font-size:14px; line-height:1; letter-spacing:.08em; writing-mode:vertical-rl; transform:translateY(10px); }
  .search-dock { font-size: 14px; }
  .search-dock .filter-button { font-size: 13px; }
  .search-dock-toggle { display: none; }
  .search-dock-panel,
  .search-dock.is-open .search-dock-panel { width: auto; height: 100%; max-height: none; padding: 24px 20px; overflow-y: auto; opacity: 1; visibility: visible; pointer-events: auto; transform: none; }
  .search-dock-control { grid-template-columns: 1fr auto; }
  .search-dock-control input { grid-column: 1 / -1; }
  .search-dock-control button[type="submit"] { grid-column: 1 / -1; }
  .search-dock-control input { border:0; background:var(--c-card); }
  .search-dock-control button[type="submit"] { background:var(--c-card); color:var(--c-main); }
  .filter-button { border:0; background:var(--c-card); }
  .filter-button.is-active { background:#36c837; color:var(--c-card); }
  #search-dock-close { display: none; }
  .filter-panel { grid-template-columns: 1fr; }
  .purpose-filter { grid-column: auto; }
}

.site-header { animation: none; }
.hero { animation: soft-in .75s .08s ease both; }
.dictionary { animation: soft-in .75s .18s ease both; }
.safety { animation: soft-in .75s .28s ease both; }
.site-footer { animation: soft-in .75s .36s ease both; }
@keyframes soft-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes cta-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes cursor-blink { 0%, 48% { opacity: 1; } 49%, 100% { opacity: 0; } }

@media (max-width: 900px) {
  body { padding-bottom: 56px; }
  .nav-toggle { display:grid; flex-shrink:0; }
  .header-menus { position:fixed; top:72px; right:16px; left:16px; max-height:calc(100vh - 88px); display:flex; flex-direction:column; align-items:stretch; gap:4px; padding:12px; overflow-y:auto; border:var(--border); border-radius:var(--radius-md); background:var(--c-card); opacity:0; visibility:hidden; pointer-events:none; transform:translateY(-8px); transition:opacity .22s ease,transform .22s ease,visibility .22s ease; }
  .nav.is-open .header-menus { opacity:1; visibility:visible; pointer-events:auto; transform:translateY(0); }
  .reason-link,.shortcut-link { width:100%; min-height:48px; margin:0; padding:10px 12px; border-radius:8px; font-size:14px; }
  .reason-link:hover,.shortcut-link:hover { background:var(--c-soft); text-decoration:none; }
  .app-menu { width:100%; }
  .app-menu-toggle { width:100%; min-height:48px; justify-content:flex-start; border:0; border-radius:8px; font-size:14px; }
  .app-menu-toggle .menu-chevron { margin-left:auto; }
  .app-menu-panel,.creator-menu-panel { position:static; width:100%; max-height:none; display:none; grid-template-columns:repeat(2,minmax(0,1fr)); margin-top:4px; padding:16px; transform:none; }
  .app-menu.is-open .app-menu-panel { display:grid; }
  .hero-visual { height:clamp(240px,33vh,300px); }
  .hero-terminal { width:40%; min-width:220px; }
  .hero-copy { padding:16px; }
  .app-menu-panel { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .command-grid { grid-template-columns: repeat(2, 1fr); }
  .filter-panel { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  body { padding-top:72px; }
  .shell { width: min(100% - 32px, 1120px); }
  .nav { min-height:72px; gap:8px; }
  .brand { min-height:44px; gap:8px; }
  .brand-tagline { display:none; }
  .menu-label-short { display:none; }
  .menu-label-long { display:inline; }
  .app-menu-toggle { gap:8px; padding-inline:12px; font-size:14px; }
  .app-menu-toggle .menu-icon { width:18px; height:18px; }
  .creator-icon { width:22px; height:22px; }
  .app-menu-panel,.creator-menu-panel { grid-template-columns:1fr; gap:20px; }
  .hero { width:calc(100% - 32px); margin:0 auto 16px; }
  .hero-visual { height:240px; }
  .hero-terminal { width:52%; min-width:190px; }
  .hero-copy { padding:12px; background:transparent; }
  .hero-copy h1 { font-size:14px; line-height:1.45; }
  .hero-cta { min-height: 44px; margin-top: 12px; padding: 8px 20px; }
  .hero-copy .hero-cta { padding-inline: 12px; font-size: 14px; }
  h1 { font-size: 32px; }
  .dictionary { padding-block: 40px 48px; }
  .learning-invite { display: block; padding: 20px; }
  .learning-actions { display:grid; grid-template-columns:1fr; margin-top:16px; }
  .learning-invite a { justify-content: center; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: 12px; }
  .command-grid { grid-template-columns: 1fr; }
  .command-card { padding: 20px; }
  .filter-panel { grid-template-columns: 1fr; padding-top: 12px; }
  .safety { grid-template-columns: 1fr; margin-block: 48px; padding: 24px; }
  .footer-inner { display: block; }
  .footer-inner p + p { margin-top: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-delay: 0s !important; }
}