/*
Theme Name: AIの使い方図鑑
Author: NV1 Project
Description: 一般公開「AIの使い方図鑑」の表示専用テーマ。
Version: 0.5.6
Requires at least: 6.6
Requires PHP: 8.1
Text Domain: ai-knowledge-theme
*/

:root {
  --akn-navy-950: #07162d;
  --akn-navy-900: #0c2345;
  --akn-navy-800: #173760;
  --akn-blue-700: #075fc7;
  --akn-blue-600: #0875e1;
  --akn-blue-100: #eaf4ff;
  --akn-cyan-100: #e9f9fb;
  --akn-ink: #142033;
  --akn-muted: #526176;
  --akn-border: #ccd7e5;
  --akn-surface: #ffffff;
  --akn-canvas: #f5f8fc;
  --akn-success: #176b47;
  --akn-success-bg: #e8f7ef;
  --akn-warning: #8a4d00;
  --akn-warning-bg: #fff3d6;
  --akn-danger: #a82424;
  --akn-danger-bg: #fff0f0;
  --akn-radius-sm: .5rem;
  --akn-radius: .875rem;
  --akn-radius-lg: 1.25rem;
  --akn-shadow: 0 10px 30px rgba(7, 22, 45, .08);
  --akn-content: 75rem;
  --akn-reading: 48rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--akn-ink);
  background: var(--akn-canvas);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", Meiryo, sans-serif;
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--akn-blue-700); text-underline-offset: .18em; }
a:hover { text-decoration-thickness: .14em; }
button, input, select, textarea { font: inherit; }
button, [type="button"], [type="submit"] { min-height: 2.75rem; }
:focus-visible { outline: 3px solid #ffbf47; outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}

.screen-reader-text {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.screen-reader-text:focus {
  position: fixed !important; z-index: 100000; top: 1rem; left: 1rem; width: auto; height: auto;
  padding: .75rem 1rem; clip: auto; color: var(--akn-navy-950); background: #fff; font-weight: 700;
}
.akn-container { width: min(calc(100% - 2rem), var(--akn-content)); margin-inline: auto; }
.akn-reading { width: min(100%, var(--akn-reading)); }
.akn-section { padding-block: clamp(2.25rem, 5vw, 4.5rem); }
.akn-section--compact { padding-block: 1.75rem; }
.akn-stack > * { margin-block: 0; }
.akn-stack > * + * { margin-top: 1rem; }
.akn-eyebrow { color: var(--akn-blue-700); font-size: .875rem; font-weight: 800; letter-spacing: .04em; }
.akn-section-title { margin: 0 0 .5rem; color: var(--akn-navy-950); font-size: clamp(1.45rem, 3vw, 2rem); line-height: 1.35; }
.akn-section-lead { max-width: 46rem; margin: 0 0 1.5rem; color: var(--akn-muted); }

.akn-skip-link { position: fixed; z-index: 10000; top: -6rem; left: 1rem; padding: .75rem 1rem; background: #fff; color: var(--akn-navy-950); font-weight: 800; }
.akn-skip-link:focus { top: 1rem; }
.akn-site-header { position: relative; z-index: 100; color: #fff; background: var(--akn-navy-950); }
.akn-header-inner { min-height: 4.5rem; display: flex; align-items: center; gap: 1.25rem; }
.akn-brand { flex: 0 0 auto; display: inline-flex; align-items: center; gap: .65rem; color: #fff; font-size: 1.05rem; font-weight: 800; text-decoration: none; }
.akn-brand .custom-logo-link { display: inline-flex; align-items: center; }
.akn-brand-mark { display: grid; width: 2rem; height: 2rem; place-items: center; border-radius: .6rem; background: var(--akn-blue-600); }
.akn-brand .custom-logo { max-height: 2.25rem; width: auto; }
.akn-nav-toggle { display: none; margin-left: auto; padding: .5rem .75rem; color: #fff; border: 1px solid rgba(255,255,255,.55); border-radius: var(--akn-radius-sm); background: transparent; font-weight: 700; }
.akn-primary-nav { margin-left: auto; }
.akn-primary-nav ul { display: flex; align-items: center; gap: .15rem; margin: 0; padding: 0; list-style: none; }
.akn-primary-nav a { display: flex; min-height: 2.75rem; align-items: center; padding: .5rem .75rem; border-radius: .55rem; color: #fff; font-weight: 650; text-decoration: none; }
.akn-primary-nav a:hover, .akn-primary-nav .current-menu-item > a { background: rgba(255,255,255,.14); }

.akn-breadcrumbs { padding-block: 1rem; color: var(--akn-muted); font-size: .9rem; }
.akn-breadcrumbs ol { display: flex; flex-wrap: wrap; gap: .35rem; margin: 0; padding: 0; list-style: none; }
.akn-breadcrumbs li:not(:last-child)::after { margin-left: .35rem; content: "/"; color: #8290a3; }

.akn-button {
  display: inline-flex; min-height: 2.75rem; align-items: center; justify-content: center; gap: .45rem;
  padding: .65rem 1rem; border: 2px solid transparent; border-radius: .65rem; font-weight: 800; line-height: 1.3; text-decoration: none; cursor: pointer;
}
.akn-button--primary { color: #fff; background: var(--akn-blue-700); }
.akn-button--primary:hover { color: #fff; background: #064f9f; }
.akn-button--secondary { color: var(--akn-navy-900); border-color: var(--akn-border); background: #fff; }
.akn-button--text { color: var(--akn-blue-700); background: transparent; }
.akn-link-arrow::after { content: ""; }

.akn-hero { position: relative; overflow: hidden; color: #fff; background: linear-gradient(135deg, var(--akn-navy-950), var(--akn-navy-800)); }
.akn-hero::after { position: absolute; inset: auto -8rem -13rem auto; width: 25rem; height: 25rem; border-radius: 50%; background: rgba(8,117,225,.22); content: ""; }
.akn-hero-inner { position: relative; z-index: 1; padding-block: clamp(3rem, 7vw, 6rem); }
.akn-hero h1 { max-width: 48rem; margin: 0; font-size: clamp(2rem, 5vw, 3.75rem); line-height: 1.2; }
.akn-hero p { max-width: 43rem; margin: 1rem 0 1.5rem; color: #d7e6f7; font-size: clamp(1rem, 2vw, 1.2rem); }
.akn-search-form { display: flex; max-width: 46rem; gap: .65rem; align-items: end; padding: .8rem; border-radius: var(--akn-radius); color: var(--akn-ink); background: #fff; box-shadow: var(--akn-shadow); }
.akn-search-field { flex: 1 1 auto; }
.akn-label { display: block; margin-bottom: .3rem; color: var(--akn-navy-950); font-size: .9rem; font-weight: 800; }
.akn-input { width: 100%; min-height: 2.85rem; padding: .65rem .75rem; border: 1px solid #9eb0c6; border-radius: .55rem; color: var(--akn-ink); background: #fff; }
.akn-input:focus { border-color: var(--akn-blue-700); }
.akn-search-note { max-width: 46rem; margin-top: .65rem !important; color: #e9f2fc !important; font-size: .875rem !important; }
.akn-page-header .akn-search-note { color: var(--akn-muted) !important; }

.akn-grid { display: grid; gap: 1rem; }
.akn-grid--categories { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.akn-grid--articles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.akn-card { border: 1px solid var(--akn-border); border-radius: var(--akn-radius); background: var(--akn-surface); box-shadow: 0 4px 16px rgba(7,22,45,.04); }
.akn-category-card { display: block; min-height: 100%; padding: 1.25rem; color: var(--akn-ink); text-decoration: none; }
.akn-category-card:hover { border-color: var(--akn-blue-600); transform: translateY(-2px); box-shadow: var(--akn-shadow); }
.akn-category-card h3 { margin: 0 0 .35rem; color: var(--akn-navy-900); font-size: 1.08rem; line-height: 1.45; }
.akn-category-card p { margin: 0; color: var(--akn-muted); font-size: .93rem; }
.akn-category-icon { display: grid; width: 2.5rem; height: 2.5rem; margin-bottom: .75rem; place-items: center; border-radius: .7rem; color: var(--akn-blue-700); background: var(--akn-blue-100); font-weight: 900; }
.akn-start-card { display: grid; grid-template-columns: 1fr auto; gap: 1rem 2rem; align-items: center; padding: clamp(1.25rem, 4vw, 2rem); border: 2px solid #a8ccec; border-radius: var(--akn-radius-lg); background: linear-gradient(135deg, #fff, var(--akn-blue-100)); }
.akn-start-card ol { display: flex; flex-wrap: wrap; gap: .6rem 1.3rem; margin: .75rem 0 0; padding-left: 1.25rem; color: var(--akn-muted); }

.akn-article-card { display: flex; min-height: 100%; flex-direction: column; padding: 1.25rem; }
.akn-card-meta, .akn-badges { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; }
.akn-badge { display: inline-flex; align-items: center; gap: .25rem; padding: .2rem .55rem; border: 1px solid #b7c8dc; border-radius: 999px; color: var(--akn-navy-800); background: #f2f6fb; font-size: .78rem; font-weight: 750; line-height: 1.5; }
.akn-badge--practice::before { content: "✓"; }
.akn-badge--knowledge::before { content: "ⓘ"; }
.akn-badge--stale { color: var(--akn-warning); border-color: #dca143; background: var(--akn-warning-bg); }
.akn-badge--stale::before { content: "!"; font-weight: 900; }
.akn-article-card h2, .akn-article-card h3 { margin: .8rem 0 .35rem; color: var(--akn-navy-950); font-size: 1.18rem; line-height: 1.45; }
.akn-article-card h2 a, .akn-article-card h3 a { color: inherit; text-decoration: none; }
.akn-article-card h2 a:hover, .akn-article-card h3 a:hover { color: var(--akn-blue-700); text-decoration: underline; }
.akn-article-card p { margin: 0 0 1rem; color: var(--akn-muted); }
.akn-article-card-footer { margin-top: auto; padding-top: .8rem; border-top: 1px solid #e3eaf2; color: var(--akn-muted); font-size: .85rem; }

.akn-page-header { padding: 2.25rem 0 1.5rem; background: #fff; border-bottom: 1px solid var(--akn-border); }
.akn-page-header h1 { margin: 0; color: var(--akn-navy-950); font-size: clamp(1.8rem, 4vw, 2.7rem); line-height: 1.25; }
.akn-page-header p { max-width: 48rem; margin: .65rem 0 0; color: var(--akn-muted); }
.akn-page-hero { padding: 2.25rem 0 1.5rem; border-bottom: 1px solid var(--akn-border); background: #fff; }
.akn-page-hero h1 { margin: 0; color: var(--akn-navy-950); font-size: clamp(1.8rem, 4vw, 2.7rem); line-height: 1.25; }
.akn-page-hero p { max-width: 48rem; margin: .65rem 0 0; color: var(--akn-muted); }
.akn-results-layout { display: grid; grid-template-columns: 17.5rem minmax(0, 1fr); gap: 2rem; align-items: start; }
.akn-filter-panel { position: sticky; top: 1rem; padding: 1rem; }
.akn-filter-panel h2 { margin: 0 0 .75rem; font-size: 1.1rem; }
.akn-filter-group { padding-block: .8rem; border-top: 1px solid var(--akn-border); }
.akn-filter-group legend { font-weight: 800; }
.akn-filter-option { display: flex; min-height: 2.75rem; align-items: center; gap: .55rem; }
.akn-filter-option input { width: 1.15rem; height: 1.15rem; }
.akn-filter-actions { display: grid; gap: .45rem; position: sticky; bottom: 0; padding-top: .8rem; background: #fff; }
.akn-results-toolbar { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.akn-results-count { margin: 0; font-weight: 800; }
.akn-results-toolbar__actions { display: flex; flex-wrap: wrap; gap: .65rem; align-items: center; color: var(--akn-muted); font-size: .88rem; }
.akn-filter-toggle { display: none; }
.akn-active-filters { display: flex; flex-wrap: wrap; gap: .45rem; align-items: center; margin: 0 0 1rem; }
.akn-filter-chip { display: inline-flex; min-height: 2.25rem; align-items: center; padding: .35rem .65rem; border: 1px solid #8fb5dc; border-radius: 999px; color: var(--akn-navy-900); background: var(--akn-blue-100); font-size: .85rem; font-weight: 750; text-decoration: none; }
.akn-filter-chip:hover { border-color: var(--akn-blue-700); }
.akn-filter-clear { min-height: 2.25rem; padding: .35rem .5rem; font-weight: 750; }
.akn-empty-state { padding: 2rem; text-align: center; }
.akn-empty-state h2 { margin-top: 0; color: var(--akn-navy-950); }
.nav-links { display: flex; flex-wrap: wrap; gap: .4rem; justify-content: center; margin-top: 2rem; }
.page-numbers { display: grid; min-width: 2.75rem; min-height: 2.75rem; place-items: center; padding: .4rem; border: 1px solid var(--akn-border); border-radius: .5rem; background: #fff; text-decoration: none; }
.page-numbers.current { color: #fff; border-color: var(--akn-blue-700); background: var(--akn-blue-700); }
.akn-search-pagination { display: flex; flex-wrap: wrap; gap: .4rem; justify-content: center; margin-top: 2rem; }
.akn-search-pagination form { margin: 0; }
.akn-search-pagination button { cursor: pointer; font: inherit; }

.akn-article-shell { display: grid; grid-template-columns: minmax(0, var(--akn-reading)) 15rem; gap: clamp(2rem, 5vw, 4rem); justify-content: center; align-items: start; }
.akn-article { min-width: 0; }
.akn-article-header { padding: clamp(1.25rem, 4vw, 2rem); border-radius: var(--akn-radius-lg); background: #fff; box-shadow: var(--akn-shadow); }
.akn-article-header h1 { margin: .75rem 0; color: var(--akn-navy-950); font-size: clamp(1.85rem, 4vw, 3rem); line-height: 1.3; }
.akn-article-lead { color: var(--akn-muted); font-size: 1.08rem; }
.akn-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; margin: 1.25rem 0 0; padding: 0; list-style: none; }
.akn-facts li { padding: .65rem; border-radius: .55rem; background: var(--akn-canvas); }
.akn-facts strong { display: block; color: var(--akn-navy-950); font-size: .78rem; }
.akn-fact-value--mobile { display: none; }
.akn-notice { padding: 1rem 1.1rem; border-left: 5px solid var(--akn-blue-700); border-radius: .4rem; background: var(--akn-blue-100); }
.akn-notice--warning { border-color: #c87500; background: var(--akn-warning-bg); }
.akn-notice--warning strong::before { content: "! "; }
.akn-notice--error { border-color: var(--akn-danger); background: var(--akn-danger-bg); }
.akn-notice--error h2 { margin-top: 0; color: var(--akn-danger); font-size: 1.2rem; }
.akn-entry-content { margin-top: 1.5rem; padding: clamp(1.25rem, 4vw, 2rem); border-radius: var(--akn-radius-lg); background: #fff; }
.akn-entry-content > * { max-width: 100%; }
.akn-entry-content h2 { margin: 2.25rem 0 .8rem; padding-bottom: .35rem; border-bottom: 2px solid #dce8f5; color: var(--akn-navy-950); font-size: 1.55rem; line-height: 1.4; }
.akn-entry-content h3 { margin: 1.75rem 0 .65rem; color: var(--akn-navy-800); font-size: 1.2rem; }
.akn-entry-content pre, .akn-entry-content .akn-code-block { overflow-x: auto; padding: 1rem; border-radius: .6rem; color: #e8eef8; background: var(--akn-navy-950); line-height: 1.6; }
.akn-entry-content code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.akn-entry-content :not(pre) > code { padding: .1rem .3rem; border-radius: .25rem; color: #7c1734; background: #f8edf1; }
.akn-entry-content blockquote { margin-inline: 0; padding: .75rem 1rem; border-left: 4px solid var(--akn-blue-600); background: var(--akn-blue-100); }
.akn-prompt-copy { margin-block: 1.5rem; padding: 1rem; border: 1px solid var(--akn-border); border-radius: var(--akn-radius); background: var(--akn-canvas); }
.akn-prompt-copy pre { margin: 0; user-select: text; -webkit-user-select: text; white-space: pre; }
.akn-prompt-copy__actions { display: flex; flex-wrap: wrap; gap: .65rem; align-items: center; margin-top: .75rem; }
.akn-prompt-copy__button { min-width: 8rem; min-height: 2.75rem; padding: .6rem 1rem; border: 2px solid transparent; border-radius: .65rem; color: #fff; background: var(--akn-blue-700); font-weight: 800; cursor: pointer; }
.akn-prompt-copy__button:hover { background: #064f9f; }
.akn-prompt-copy__button:disabled { cursor: wait; opacity: .7; }
.akn-prompt-copy__status { min-height: 1.75rem; margin: 0; color: var(--akn-muted); font-weight: 750; }
.akn-prompt-copy__status[data-state="success"] { color: var(--akn-success); }
.akn-prompt-copy__status[data-state="error"] { color: var(--akn-danger); }
.akn-prompt-copy__manual { margin: .75rem 0 0; padding: .75rem 1rem; border: 1px solid #d78b27; border-radius: var(--akn-radius-sm); background: var(--akn-warning-bg); }
.akn-prompt-copy__manual[hidden] { display: none; }
.akn-entry-content table { width: 100%; border-collapse: collapse; }
.akn-entry-content th, .akn-entry-content td { padding: .65rem; border: 1px solid var(--akn-border); text-align: left; }
.akn-table-scroll { overflow-x: auto; }
.akn-toc { position: sticky; top: 1rem; padding: 1rem; font-size: .9rem; }
.akn-toc h2 { margin: 0 0 .6rem; font-size: 1rem; }
.akn-toc ul { margin: 0; padding-left: 1.1rem; }
.akn-toc a { color: var(--akn-navy-800); }
.akn-mobile-toc { display: none; }
.akn-article-footer { margin-top: 1.5rem; padding: 1.25rem; border-top: 1px solid var(--akn-border); color: var(--akn-muted); background: #fff; }

.akn-error-page { min-height: 60vh; display: grid; place-items: center; padding-block: 4rem; text-align: center; }
.akn-error-code { margin: 0; color: var(--akn-blue-700); font-size: 4rem; font-weight: 900; line-height: 1; }
.akn-error-actions { display: flex; flex-wrap: wrap; gap: .75rem; justify-content: center; }
.akn-site-footer { color: #dbe6f3; background: var(--akn-navy-950); }
.akn-footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 1.5rem; align-items: center; padding-block: 2rem; }
.akn-footer-inner p { margin: 0; }
.akn-footer-nav ul { display: flex; flex-wrap: wrap; gap: .5rem 1rem; margin: 0; padding: 0; list-style: none; }
.akn-footer-nav a { color: #fff; }
.akn-mobile-nav { display: none; }

/* Plugin-owned投稿・レビューフローの表示基盤 */
.akn-workflow-page { min-height: 65vh; }
.akn-workflow-shell { max-width: 72rem; }
.akn-workflow-shell form { margin: 0; }
.akn-workflow, .akn-workflow-list, .akn-publish-confirm, .akn-workflow-shell > .akn-review-detail {
  padding: clamp(1rem, 3vw, 1.5rem); border: 1px solid var(--akn-border); border-radius: var(--akn-radius); background: #fff;
}
.akn-workflow > :first-child, .akn-workflow-list > :first-child, .akn-publish-confirm > :first-child { margin-top: 0; }
.akn-workflow > :last-child, .akn-workflow-list > :last-child, .akn-publish-confirm > :last-child { margin-bottom: 0; }
.akn-workflow-shell button[type="submit"] {
  min-height: 2.75rem; padding: .65rem 1rem; border: 2px solid transparent; border-radius: .65rem;
  color: #fff; background: var(--akn-blue-700); font-weight: 800; line-height: 1.3; cursor: pointer;
}
.akn-workflow-shell button[type="submit"]:hover { background: #064f9f; }
.akn-workflow-shell fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.akn-workflow-shell legend { width: 100%; color: var(--akn-navy-950); font-size: 1.15rem; font-weight: 800; }
.akn-workflow-shell label { color: var(--akn-navy-950); font-weight: 750; }
.akn-workflow-shell input:not([type="checkbox"]):not([type="radio"]):not([type="hidden"]),
.akn-workflow-shell select,
.akn-workflow-shell textarea {
  width: 100%; min-height: 2.75rem; padding: .7rem .8rem; border: 1px solid #879bb4;
  border-radius: .55rem; color: var(--akn-ink); background: #fff;
}
.akn-workflow-shell textarea { min-height: 8rem; resize: vertical; }
.akn-workflow-shell input:focus,
.akn-workflow-shell select:focus,
.akn-workflow-shell textarea:focus { border-color: var(--akn-blue-700); box-shadow: 0 0 0 1px var(--akn-blue-700); }
.akn-workflow-shell [aria-invalid="true"] { border-color: var(--akn-danger) !important; box-shadow: 0 0 0 1px var(--akn-danger); }
.akn-workflow-shell [disabled],
.akn-workflow-shell [aria-disabled="true"] { cursor: not-allowed; opacity: .62; }
.akn-review-request label { display: flex; min-height: 2.75rem; gap: .55rem; align-items: center; font-weight: 650; }
.akn-review-request input { flex: 0 0 auto; width: 1.2rem; height: 1.2rem; }
.akn-review-request { margin-top: 1.5rem !important; padding-top: 1.5rem; border-top: 2px solid var(--akn-border); }
.akn-review-request h2 { margin-top: 0; }

.akn-workflow-status {
  position: sticky; z-index: 20; top: 0; display: flex; flex-wrap: wrap; gap: .65rem 1rem;
  align-items: center; justify-content: space-between; margin-bottom: 1.25rem; padding: .85rem 1rem;
  border: 1px solid var(--akn-border); border-radius: var(--akn-radius); background: #fff; box-shadow: var(--akn-shadow);
}
.akn-workflow-status__state { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.akn-workflow-status__actions, .akn-form-actions { display: flex; flex-wrap: wrap; gap: .65rem; align-items: center; }
.akn-workflow-status__actions .akn-button--secondary,
.akn-form-actions .akn-button--secondary { color: var(--akn-navy-900); border-color: var(--akn-border); background: #fff; }
.akn-workflow-status__actions .akn-button--secondary:hover,
.akn-form-actions .akn-button--secondary:hover { color: var(--akn-blue-700); border-color: var(--akn-blue-700); background: var(--akn-blue-100); }
.akn-save-time { color: var(--akn-muted); font-size: .9rem; }
.akn-save-time strong { color: var(--akn-ink); }
.akn-status {
  display: inline-flex; min-height: 2rem; align-items: center; gap: .35rem; padding: .25rem .65rem;
  border: 1px solid var(--akn-border); border-radius: 999px; color: var(--akn-navy-800); background: #fff; font-size: .875rem; font-weight: 800;
}
.akn-status::before { content: "●"; font-size: .7em; }
.akn-status--draft::before, [data-state="unsaved"]::before { content: "○"; }
.akn-status--review::before, [data-state="saving"]::before { content: "…"; }
.akn-status--returned { color: var(--akn-danger); background: var(--akn-danger-bg); }
.akn-status--returned::before, [data-state="failed"]::before { content: "!"; }
.akn-status--published, [data-state="saved"] { color: var(--akn-success); background: var(--akn-success-bg); }
.akn-status--published::before, [data-state="saved"]::before { content: "✓"; }
[data-akn-save-state] { min-height: 1.5rem; color: var(--akn-muted); font-size: .9rem; }
.akn-state { display: inline-flex; align-items: center; gap: .35rem; padding: .2rem .6rem; border: 1px solid var(--akn-border); border-radius: 999px; color: var(--akn-navy-800); background: var(--akn-blue-100); font-size: .875rem; font-weight: 800; }
.akn-state::before { content: "ⓘ"; }

.akn-form-layout { display: grid; grid-template-columns: minmax(0, 1fr) 14rem; gap: 1.5rem; align-items: start; }
.akn-form-sections { display: grid; gap: 1rem; }
.akn-workflow--editor { padding: 0; border: 0; background: transparent; }
.akn-editor-guidance { margin: 0 0 1.25rem; }
.akn-editor-guidance p { margin: .25rem 0 0; }
.akn-form-section { min-width: 0; padding: clamp(1rem, 3vw, 1.5rem); scroll-margin-top: 6rem; }
.akn-form-section > :first-child { margin-top: 0; }
.akn-form-section > :last-child { margin-bottom: 0; }
.akn-form-section small { display: block; margin-top: .3rem; color: var(--akn-muted); font-size: .9rem; }
.akn-form-section legend { display: flex; gap: .65rem; align-items: center; margin-bottom: .25rem; font-size: 1.25rem; }
.akn-form-section legend > span { display: grid; width: 2rem; height: 2rem; place-items: center; border-radius: .65rem; color: var(--akn-blue-700); background: var(--akn-blue-100); font-size: .9rem; }
.akn-section-description { margin: .25rem 0 1.25rem; color: var(--akn-muted); }
.akn-form-field { margin-top: 1.15rem; }
.akn-form-field__heading { display: flex; flex-wrap: wrap; gap: .4rem; align-items: baseline; margin-bottom: .35rem; }
.akn-form-field__heading label { color: var(--akn-navy-950); font-size: 1rem; font-weight: 800; }
.akn-field-requirement { display: inline-flex; padding: .08rem .45rem; border-radius: .3rem; font-size: .75rem; font-weight: 850; }
.akn-field-requirement--required { color: #fff; background: var(--akn-danger); }
.akn-field-requirement--optional { color: var(--akn-muted); border: 1px solid var(--akn-border); background: #fff; }
.akn-field-help, .akn-field-example { margin: .3rem 0 0; color: var(--akn-muted); font-size: .9rem; }
.akn-field-example::before { content: "入力例: "; font-weight: 800; }
.akn-content-editor { min-height: 26rem !important; margin-top: .75rem; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; line-height: 1.7; }
.akn-date-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.akn-taxonomy-group { padding-block: 1.15rem; border-top: 1px solid var(--akn-border); }
.akn-taxonomy-group__heading { display: flex; flex-wrap: wrap; gap: .4rem .6rem; align-items: center; margin-bottom: .75rem; }
.akn-taxonomy-group__heading h3 { margin: 0; color: var(--akn-navy-950); font-size: 1rem; }
.akn-taxonomy-mode { color: var(--akn-muted); font-size: .82rem; }
.akn-option-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .55rem; }
.akn-choice-option {
  display: grid; grid-template-columns: 1.25rem minmax(0, 1fr); gap: .65rem; min-height: 3rem; align-items: center;
  padding: .65rem .75rem; border: 1px solid var(--akn-border); border-radius: .65rem; background: #fff; cursor: pointer;
}
.akn-choice-option:hover { border-color: #8fb5dc; background: var(--akn-blue-100); }
.akn-choice-option:has(input:checked) { border-color: var(--akn-blue-700); box-shadow: inset 0 0 0 1px var(--akn-blue-700); background: var(--akn-blue-100); }
.akn-choice-option input { width: 1.2rem; height: 1.2rem; margin: 0; accent-color: var(--akn-blue-700); }
.akn-choice-option span { min-width: 0; color: var(--akn-navy-950); font-size: .92rem; font-weight: 700; }
.akn-optional-settings { margin-top: 1rem; border: 1px solid var(--akn-border); border-radius: var(--akn-radius); background: var(--akn-canvas); }
.akn-optional-settings summary { min-height: 3rem; padding: .75rem 1rem; color: var(--akn-blue-700); font-weight: 800; cursor: pointer; }
.akn-optional-settings__body { padding: 0 1rem 1rem; }
.akn-form-submit-panel {
  display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: space-between;
  padding: 1.25rem; border: 1px solid #8fb5dc; border-radius: var(--akn-radius); background: var(--akn-blue-100);
}
.akn-form-submit-panel p { margin: .2rem 0 0; color: var(--akn-muted); font-size: .9rem; }
.akn-field-error { display: flex; gap: .35rem; margin: .35rem 0 0; color: var(--akn-danger); font-size: .9rem; font-weight: 750; }
.akn-field-error::before { content: "!"; font-weight: 900; }
.akn-form-anchor { position: sticky; top: 5.5rem; padding: 1rem; }
.akn-form-anchor h2 { margin: 0 0 .6rem; font-size: 1rem; }
.akn-form-anchor ol { margin: 0; padding-left: 1.25rem; }
.akn-form-anchor a { display: inline-flex; min-height: 2.75rem; align-items: center; }
.akn-form-anchor p { margin: .75rem 0 0; padding-top: .75rem; border-top: 1px solid var(--akn-border); }

.akn-login-gate {
  width: min(100%, 42rem); margin-inline: auto; padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--akn-border); border-radius: var(--akn-radius-lg); background: #fff; box-shadow: var(--akn-shadow); text-align: center;
}
.akn-login-gate__eyebrow { margin: 0 0 .35rem; color: var(--akn-blue-700); font-size: .85rem; font-weight: 800; }
.akn-login-gate h2 { margin: 0; color: var(--akn-navy-950); font-size: clamp(1.45rem, 3vw, 2rem); line-height: 1.35; }
.akn-login-gate > p:not(.akn-login-gate__eyebrow) { margin: .75rem auto 0; max-width: 34rem; color: var(--akn-muted); }
.akn-login-gate__actions { display: flex; flex-wrap: wrap; gap: .75rem; justify-content: center; margin-top: 1.25rem; }

.akn-error-summary { margin-bottom: 1rem; padding: 1rem 1.2rem; border: 2px solid var(--akn-danger); border-radius: var(--akn-radius); background: var(--akn-danger-bg); }
.akn-error-summary h2 { margin: 0 0 .35rem; color: var(--akn-danger); font-size: 1.15rem; }
.akn-error-summary ul { margin: .35rem 0 0; }
.akn-error-summary a { color: var(--akn-danger); font-weight: 750; }
.akn-notice-error { border-left: 5px solid var(--akn-danger); background: var(--akn-danger-bg); }
.akn-notice-warning { border-left: 5px solid #c87500; background: var(--akn-warning-bg); }
.akn-return-reason { margin-bottom: 1.25rem; padding: 1.15rem; border: 2px solid #d78b27; border-radius: var(--akn-radius); background: var(--akn-warning-bg); }
.akn-return-reason h2 { margin: 0 0 .35rem; font-size: 1.15rem; }

.akn-check-list { display: grid; gap: .65rem; margin: 1rem 0; padding: 0; list-style: none; }
.akn-check-option { display: grid; grid-template-columns: 1.35rem 1fr; gap: .7rem; min-height: 2.75rem; align-items: start; padding: .7rem; border: 1px solid var(--akn-border); border-radius: .55rem; background: #fff; }
.akn-check-option input { width: 1.25rem; height: 1.25rem; margin-top: .18rem; }
.akn-check-option strong { display: block; }
.akn-check-option small { display: block; color: var(--akn-muted); }

.akn-preview-toolbar { position: sticky; z-index: 20; top: 0; display: flex; flex-wrap: wrap; gap: .65rem; align-items: center; justify-content: space-between; padding: .8rem; border: 1px solid var(--akn-border); border-radius: var(--akn-radius); background: #fff; }
.akn-preview-switcher { display: inline-flex; gap: .25rem; padding: .2rem; border-radius: .7rem; background: var(--akn-canvas); }
.akn-preview-switcher button { padding: .45rem .8rem; border: 0; border-radius: .5rem; color: var(--akn-navy-800); background: transparent; font-weight: 800; }
.akn-preview-switcher button[aria-pressed="true"] { color: #fff; background: var(--akn-blue-700); }
.akn-preview-frame { width: 100%; margin: 1rem auto 0; overflow: hidden; border: 1px solid var(--akn-border); border-radius: var(--akn-radius); background: #fff; transition: width .2s ease; }
.akn-preview-frame[data-akn-preview="mobile"] { width: min(100%, 23.4375rem); }
.akn-preview-frame iframe { display: block; width: 100%; min-height: 70vh; border: 0; }

.akn-review-table-wrap { overflow-x: auto; border: 1px solid var(--akn-border); border-radius: var(--akn-radius); background: #fff; }
.akn-review-table { width: 100%; border-collapse: collapse; }
.akn-review-table th, .akn-review-table td { padding: .85rem; border-bottom: 1px solid var(--akn-border); text-align: left; vertical-align: top; }
.akn-review-table th { color: var(--akn-navy-900); background: var(--akn-blue-100); white-space: nowrap; }
.akn-review-table tr:last-child td { border-bottom: 0; }
.akn-review-cards { display: none; }
.akn-workflow-list ul { display: grid; gap: .75rem; margin: 0; padding: 0; list-style: none; }
.akn-workflow-list li { min-height: 2.75rem; padding: .8rem; border: 1px solid var(--akn-border); border-radius: .55rem; background: var(--akn-canvas); }
.akn-workflow-list li strong { color: var(--akn-navy-950); }
.akn-workflow-list li span { display: inline-flex; margin-left: .4rem; padding: .1rem .45rem; border-radius: 999px; color: var(--akn-navy-800); background: var(--akn-blue-100); font-size: .8rem; font-weight: 750; }
.akn-workflow-list dl { display: grid; grid-template-columns: 6rem minmax(0, 1fr); gap: .25rem .65rem; margin: .65rem 0; }
.akn-workflow-list dt { color: var(--akn-muted); font-size: .875rem; font-weight: 750; }
.akn-workflow-list dd { margin: 0; }
.akn-workflow-list a, .akn-publish-link { display: inline-flex; min-height: 2.75rem; align-items: center; font-weight: 800; }
.akn-publish-link { justify-content: center; padding: .65rem 1rem; border-radius: .65rem; color: #fff; background: var(--akn-blue-700); text-decoration: none; }
.akn-publish-link:hover { color: #fff; background: #064f9f; }
.akn-review-card { padding: 1rem; }
.akn-review-card dl { display: grid; grid-template-columns: 6rem 1fr; gap: .35rem .6rem; margin: .75rem 0; }
.akn-review-card dt { color: var(--akn-muted); font-size: .875rem; font-weight: 750; }
.akn-review-card dd { margin: 0; }
.akn-review-layout { display: grid; grid-template-columns: minmax(0, 1fr) 18rem; gap: 1.5rem; align-items: start; }
.akn-workflow-shell > .akn-review-detail { margin-bottom: 1rem; }
.akn-workflow-shell > .akn-review-detail + form { padding: 1rem; border: 2px solid #d78b27; border-radius: var(--akn-radius); background: var(--akn-warning-bg); }
.akn-workflow-shell > .akn-review-detail + form h2 { margin-top: 0; }
.akn-workflow-shell > .akn-review-detail + form button[type="submit"] { background: var(--akn-danger); }
.akn-review-sidebar { position: sticky; top: 1rem; }
.akn-confirm-panel { max-width: 48rem; margin-inline: auto; padding: clamp(1.25rem, 4vw, 2rem); }
.akn-confirm-summary { display: grid; grid-template-columns: 10rem 1fr; gap: .5rem 1rem; }
.akn-confirm-summary dt { color: var(--akn-muted); font-weight: 750; }
.akn-confirm-summary dd { margin: 0; }
.akn-danger-zone { margin-top: 1.5rem; padding: 1rem; border: 2px solid var(--akn-danger); border-radius: var(--akn-radius); background: var(--akn-danger-bg); }
.akn-button--danger { color: #fff; background: var(--akn-danger); }
.akn-button--danger:hover { color: #fff; background: #851c1c; }

@media (max-width: 1023px) {
	.akn-nav-toggle { display: inline-flex; align-items: center; }
	.akn-primary-nav { position: absolute; inset: 100% 0 auto; display: none; padding: .5rem .65rem 1rem; background: var(--akn-navy-950); }
	.akn-primary-nav.is-open { display: block; }
	.akn-primary-nav ul { align-items: stretch; flex-direction: column; }
	.akn-primary-nav a { padding-inline: 1rem; }
  .akn-grid--categories { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .akn-article-shell { grid-template-columns: minmax(0, 1fr); }
  .akn-toc { display: none; }
  .akn-mobile-toc { display: block; margin-top: 1rem; padding: 1rem; }
  .akn-form-layout, .akn-review-layout { grid-template-columns: minmax(0, 1fr); }
  .akn-form-anchor, .akn-review-sidebar { position: static; }
  .akn-form-anchor ol { columns: 2; }
  .akn-form-anchor { order: -1; }
}

@media (max-width: 767px) {
  body { padding-bottom: 4.5rem; }
  .akn-container { width: min(calc(100% - 1.25rem), var(--akn-content)); }
  .akn-header-inner { min-height: 4rem; }
  .akn-search-form { align-items: stretch; flex-direction: column; }
  .akn-grid--categories, .akn-grid--articles { grid-template-columns: 1fr; }
  .akn-start-card { grid-template-columns: 1fr; }
  .akn-start-card ol { display: block; }
  .akn-results-layout { display: block; }
  .akn-filter-toggle { display: inline-flex; }
  .akn-filter-panel { position: fixed; z-index: 1000; inset: 0; display: none; overflow-y: auto; padding: 1rem max(1rem, env(safe-area-inset-right)) calc(1rem + env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left)); border: 0; border-radius: 0; }
  .akn-filter-panel.is-open { display: block; }
  .akn-filter-panel-close { display: inline-flex !important; }
	.no-js .akn-filter-panel { position: static; display: block; overflow: visible; margin-bottom: 1rem; padding: 1rem; border: 1px solid var(--akn-border); border-radius: var(--akn-radius); }
	.no-js .akn-filter-panel-close, .no-js .akn-filter-toggle { display: none !important; }
  .akn-facts { grid-template-columns: 1fr 1fr; }
  .akn-entry-content table { min-width: 38rem; }
  .akn-footer-inner { grid-template-columns: 1fr; padding-bottom: 1rem; }
  .akn-mobile-nav { position: fixed; z-index: 90; inset: auto 0 0; display: block; border-top: 1px solid var(--akn-border); background: #fff; box-shadow: 0 -4px 18px rgba(7,22,45,.1); }
  .akn-mobile-nav ul { display: grid; grid-template-columns: repeat(var(--akn-mobile-items, 3), 1fr); margin: 0; padding: .35rem; list-style: none; }
  .akn-mobile-nav a { display: flex; min-height: 3.5rem; align-items: center; justify-content: center; padding: .35rem; border-radius: .5rem; color: var(--akn-navy-800); font-size: .78rem; font-weight: 800; text-align: center; text-decoration: none; }
  .akn-mobile-nav .current-menu-item > a, .akn-mobile-nav a:hover { color: var(--akn-blue-700); background: var(--akn-blue-100); }
  .akn-workflow-status, .akn-preview-toolbar { position: static; align-items: stretch; }
  .akn-workflow-status__actions, .akn-form-actions { display: grid; grid-template-columns: 1fr; width: 100%; }
  .akn-workflow-status__actions .akn-button, .akn-form-actions .akn-button { width: 100%; }
  .akn-form-anchor ol { columns: 1; }
  .akn-date-grid, .akn-option-grid { grid-template-columns: 1fr; }
  .akn-content-editor { min-height: 22rem !important; }
  .akn-form-submit-panel { align-items: stretch; flex-direction: column; }
  .akn-form-submit-panel .akn-form-actions { width: 100%; }
  .akn-login-gate__actions { display: grid; grid-template-columns: 1fr; }
  .akn-review-table-wrap { display: none; }
  .akn-review-cards { display: grid; gap: .75rem; }
  .akn-preview-switcher { display: grid; grid-template-columns: 1fr 1fr; width: 100%; }
  .akn-confirm-summary { grid-template-columns: 1fr; }
  .akn-confirm-summary dd + dt { margin-top: .5rem; }
  .akn-workflow-list dl { grid-template-columns: 5rem minmax(0, 1fr); }
}

@media (max-width: 374px) {
  .akn-brand-text { max-width: 11rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .akn-facts { grid-template-columns: 1fr; }
}

/* v0.4 editorial redesign: AIの使い方図鑑 */
:root {
  --akn-navy-950: #071b3a;
  --akn-navy-900: #0b2852;
  --akn-navy-800: #183e6d;
  --akn-blue-700: #145fbe;
  --akn-blue-600: #2979d4;
  --akn-blue-100: #eaf3fc;
  --akn-ink: #10233f;
  --akn-muted: #5d6d80;
  --akn-border: #d9d5cc;
  --akn-canvas: #f7f3eb;
  --akn-radius: .45rem;
  --akn-radius-lg: .75rem;
  --akn-shadow: 0 18px 45px rgba(7, 27, 58, .08);
}

body { background: var(--akn-canvas); }
.akn-site-header {
  color: var(--akn-navy-950);
  border-bottom: 1px solid var(--akn-border);
  background: rgba(255, 255, 255, .96);
}
.akn-header-inner { min-height: 5rem; }
.akn-brand { color: var(--akn-navy-950); font-size: 1.12rem; letter-spacing: .01em; }
.akn-brand-mark { border-radius: 50%; color: #fff; background: var(--akn-navy-950); font-size: .76rem; letter-spacing: -.04em; }
.akn-primary-nav a { color: var(--akn-navy-950); }
.akn-primary-nav a:hover,
.akn-primary-nav .current-menu-item > a { color: var(--akn-blue-700); background: var(--akn-blue-100); }
.akn-nav-toggle { color: var(--akn-navy-950); border-color: var(--akn-border); }
.akn-button { border-radius: .7rem; }
.akn-button--primary { background: #075ecb; }
.akn-button--primary:hover { background: #064da8; }

.akn-home-hero { overflow: hidden; border-bottom: 1px solid var(--akn-border); background: #fff; }
.akn-home-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(22rem, .95fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  min-height: min(42rem, calc(100vh - 5rem));
  padding-block: clamp(3.5rem, 6vw, 5rem);
}
.akn-home-kicker {
  margin: 0 0 .8rem;
  color: var(--akn-blue-700);
  font-size: .76rem;
  font-weight: 850;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.akn-home-hero h1 {
  max-width: 11em;
  margin: 0;
  color: var(--akn-navy-950);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", Meiryo, sans-serif;
  font-size: clamp(2.65rem, 4.7vw, 4.2rem);
  font-weight: 850;
  letter-spacing: -.045em;
  line-height: 1.3;
}
.akn-home-hero__lead { max-width: 39rem; margin: 1.5rem 0 1.8rem; color: var(--akn-muted); font-size: clamp(1rem, 1.6vw, 1.15rem); }
.akn-home-hero .akn-search-form {
  max-width: 39rem;
  padding: .45rem;
  border: 1px solid #b8c1cc;
  border-radius: .9rem;
  box-shadow: 0 12px 28px rgba(7, 27, 58, .08);
}
.akn-home-hero .akn-label { padding-left: .4rem; }
.akn-home-hero .akn-input { border: 0; }
.akn-home-hero .akn-search-note { color: var(--akn-muted) !important; }
.akn-guide-link {
  display: flex;
  max-width: 39rem;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.25rem;
  padding: .9rem 1rem;
  border-top: 1px solid var(--akn-border);
  border-bottom: 1px solid var(--akn-border);
  color: var(--akn-navy-950);
  text-decoration: none;
}
.akn-guide-link small,
.akn-guide-link strong { display: block; }
.akn-guide-link small { color: var(--akn-blue-700); font-size: .72rem; font-weight: 800; }
.akn-guide-link__action,
.akn-scene-link__action { display: none; color: var(--akn-blue-700); font-size: .8rem; font-weight: 800; }
.akn-home-hero__visual { position: relative; margin: 0; }
.akn-home-hero__visual::before {
  position: absolute;
  inset: 7% -18% -10% 15%;
  border-radius: 50%;
  background: #edf4fa;
  content: "";
}
.akn-home-hero__visual img { position: relative; z-index: 1; display: block; width: 100%; mix-blend-mode: multiply; }

.akn-home-categories { padding-block: clamp(3rem, 6vw, 5.25rem); border-bottom: 1px solid var(--akn-border); background: #fff; }
.akn-home-section-heading {
  display: flex;
  gap: 2rem;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 1.75rem;
}
.akn-home-section-heading h2 {
  margin: 0;
  color: var(--akn-navy-950);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", Meiryo, sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  line-height: 1.3;
}
.akn-home-section-heading > p { max-width: 28rem; margin: 0; color: var(--akn-muted); }
.akn-home-section-heading > a { flex: 0 0 auto; font-weight: 800; }
.akn-scene-index { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.akn-scene-link {
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  gap: .9rem;
  min-height: 8.25rem;
  align-items: start;
  padding: 1.25rem;
  border: 1px solid var(--akn-border);
  border-radius: .8rem;
  color: var(--akn-navy-950);
  background: #fff;
  text-decoration: none;
  transition: border-color .18s ease, background-color .18s ease, transform .18s ease;
}
.akn-scene-link:hover { border-color: var(--akn-blue-700); background: var(--akn-blue-100); transform: translateY(-2px); }
.akn-scene-link__number { display: grid; width: 2.25rem; height: 2.25rem; place-items: center; border-radius: .65rem; color: var(--akn-blue-700); background: var(--akn-blue-100); font: 800 .72rem/1.5 ui-monospace, monospace; }
.akn-scene-link strong,
.akn-scene-link small { display: block; }
.akn-scene-link strong { margin-bottom: .35rem; font-size: 1.05rem; line-height: 1.45; }
.akn-scene-link small { color: var(--akn-muted); line-height: 1.55; overflow-wrap: anywhere; }

.akn-learning-section { border-bottom: 1px solid var(--akn-border); background: #eaf1f7; }
.akn-lesson-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0 0 1.75rem;
  padding: 0;
  border-top: 1px solid var(--akn-navy-950);
  list-style: none;
}
.akn-lesson-list li { display: flex; gap: .75rem; min-height: 5rem; align-items: center; padding: 1rem; border-right: 1px solid #c4ced7; border-bottom: 1px solid #c4ced7; }
.akn-lesson-list li:nth-child(3n) { border-right: 0; }
.akn-lesson-list span { color: var(--akn-blue-700); font: 800 .72rem/1.5 ui-monospace, monospace; }
.akn-community-callout { padding-block: clamp(3rem, 6vw, 5rem); color: #fff; background: var(--akn-navy-950); }
.akn-community-callout__inner { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2rem; align-items: center; }
.akn-community-callout h2 { max-width: none; margin: 0; font: 800 clamp(1.8rem, 2.4vw, 2.4rem)/1.35 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", Meiryo, sans-serif; }
.akn-community-callout p:not(.akn-home-kicker) { max-width: 48rem; margin: .8rem 0 0; color: #cdd8e6; }
.akn-community-callout .akn-button--primary { color: var(--akn-navy-950); background: #fff; }

.akn-workflow-shell { max-width: 52rem; }
.akn-workflow--editor { max-width: 52rem; margin-inline: auto; }
.akn-editor-intro { display: flex; gap: 1.5rem; align-items: end; justify-content: space-between; margin-bottom: 1.25rem; }
.akn-editor-intro h2 { margin: 0; color: var(--akn-navy-950); font: 800 clamp(1.5rem, 3vw, 2.25rem)/1.35 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", Meiryo, sans-serif; }
.akn-editor-intro p:not(.akn-eyebrow) { margin: .45rem 0 0; color: var(--akn-muted); }
.akn-editor-progress { flex: 0 0 auto; color: var(--akn-blue-700); font-size: .8rem; font-weight: 800; }
.akn-form-section { box-shadow: none; }
.akn-category-choice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .55rem; }
.akn-field-label { color: var(--akn-navy-950); font-weight: 800; }
.akn-author-option { display: grid; grid-template-columns: 1.25rem minmax(0, 1fr); gap: .75rem; margin-top: 1.25rem; padding: 1rem; border: 1px solid var(--akn-border); background: var(--akn-canvas); }
.akn-author-option input { width: 1.2rem; height: 1.2rem; margin-top: .25rem; }
.akn-author-option strong,
.akn-author-option small { display: block; }
.akn-author-option small { margin-top: .25rem; color: var(--akn-muted); }
.akn-article-card-footer { display: flex; flex-wrap: wrap; gap: .5rem 1rem; justify-content: space-between; }

.akn-account-card {
  max-width: 36rem;
  margin-inline: auto;
  padding: clamp(1.25rem, 4vw, 2rem);
  border: 1px solid var(--akn-border);
  border-radius: 1.25rem;
  background: #fff;
  box-shadow: var(--akn-shadow);
}
.akn-account-card h2 { margin-top: 0; color: var(--akn-navy-950); }
.akn-account-card form { display: grid; gap: 1rem; margin-top: 1.5rem; }
.akn-account-card label:not(.akn-check) { display: grid; gap: .4rem; color: var(--akn-navy-950); font-weight: 800; }
.akn-account-card input[type="email"],
.akn-account-card input[type="text"],
.akn-account-card input[type="password"],
.akn-account-card input:not([type]) { min-height: 3rem; padding: .7rem .8rem; border: 1px solid var(--akn-border); border-radius: .7rem; font: inherit; }
.akn-check { display: flex; gap: .6rem; align-items: flex-start; }
.akn-honeypot { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }

.akn-media-manager { max-width: 52rem; margin: 1rem auto 0; padding: 1.25rem; }
.akn-media-manager > form { display: grid; gap: .8rem; padding: 1rem; border-radius: .8rem; background: var(--akn-canvas); }
.akn-media-manager > form label { display: grid; gap: .35rem; font-weight: 700; }
.akn-media-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin: 1rem 0 0; padding: 0; list-style: none; }
.akn-media-list li { padding: .8rem; border: 1px solid var(--akn-border); border-radius: .8rem; }
.akn-media-list form { display: inline-block; margin-left: .5rem; }
.akn-article-image { margin: 1.25rem 0; }
.akn-article-image img { display: block; width: 100%; height: auto; border-radius: .8rem; }

/* v0.5.1 beginner learning stories */
.akn-learning-article .akn-entry-content {
  --akn-learning-pad: clamp(1rem, 3vw, 2.25rem);
  padding: var(--akn-learning-pad);
  font-size: 1.05rem;
  line-height: 1.9;
}
.akn-guide-hero {
  margin: calc(0px - var(--akn-learning-pad)) calc(0px - var(--akn-learning-pad)) 2rem;
  overflow: hidden;
  border-radius: var(--akn-radius-lg) var(--akn-radius-lg) 0 0;
  background: #f4efe4;
}
.akn-guide-hero img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.akn-learning-article .akn-entry-content > p {
  max-width: 42rem;
  margin: 1rem auto;
}
.akn-learning-article .akn-entry-content > h2 {
  max-width: 42rem;
  margin: 3.2rem auto 1rem;
  padding: 0;
  border: 0;
  font-size: clamp(1.45rem, 3vw, 1.9rem);
  letter-spacing: -.02em;
}
.akn-learning-article .akn-entry-content > h2::after {
  display: block;
  width: 3rem;
  height: .22rem;
  margin-top: .65rem;
  border-radius: 999px;
  background: var(--akn-blue-600);
  content: "";
}
.akn-learning-article .akn-entry-content > ul,
.akn-learning-article .akn-entry-content > ol {
  display: grid;
  max-width: 42rem;
  gap: .75rem;
  margin: 1.25rem auto;
  padding: 0;
  list-style: none;
  counter-reset: akn-learning-step;
}
.akn-learning-article .akn-entry-content > ul > li,
.akn-learning-article .akn-entry-content > ol > li {
  position: relative;
  padding: 1rem 1rem 1rem 3.2rem;
  border: 1px solid #c9d8e8;
  border-radius: .8rem;
  background: #f8fbfe;
}
.akn-learning-article .akn-entry-content > ul > li::before {
  position: absolute;
  top: .95rem;
  left: 1rem;
  display: grid;
  width: 1.55rem;
  height: 1.55rem;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--akn-blue-700);
  content: "✓";
  font-size: .8rem;
  font-weight: 900;
}
.akn-learning-article .akn-entry-content > ol > li {
  counter-increment: akn-learning-step;
}
.akn-learning-article .akn-entry-content > ol > li::before {
  position: absolute;
  top: .95rem;
  left: 1rem;
  display: grid;
  width: 1.55rem;
  height: 1.55rem;
  place-items: center;
  border-radius: .45rem;
  color: #fff;
  background: var(--akn-navy-900);
  content: counter(akn-learning-step);
  font-size: .78rem;
  font-weight: 900;
}
.akn-learning-article .akn-entry-content > blockquote {
  max-width: 42rem;
  margin: 1.5rem auto;
  padding: 1.15rem 1.25rem;
  border: 0;
  border-radius: .9rem;
  color: var(--akn-navy-900);
  background: #fff3dc;
  box-shadow: inset 4px 0 0 #e99232;
}
.akn-learning-article .akn-entry-content > blockquote p { margin: 0; }
.akn-learning-section-visual {
  max-width: 42rem;
  margin: .9rem auto 1.65rem;
  overflow: hidden;
  border: 1px solid var(--akn-border);
  border-radius: 1rem;
  background: #fffaf1;
  box-shadow: 0 12px 30px rgba(7, 22, 45, .08);
}
.akn-learning-section-visual img {
  display: block;
  width: 100%;
  height: auto;
}
.akn-learning-article .akn-entry-content > .akn-prompt-copy,
.akn-learning-article .akn-entry-content > pre,
.akn-learning-article .akn-entry-content > .akn-notice {
  max-width: 42rem;
  margin-inline: auto;
}
.akn-learning-article .akn-entry-content > .akn-notice { margin-top: 1.5rem; }

@media (max-width: 767px) {
  .akn-learning-article .akn-entry-content { font-size: 1rem; line-height: 1.85; }
  .akn-guide-hero { margin-bottom: 1.5rem; }
  .akn-learning-article .akn-entry-content > h2 { margin-top: 2.5rem; }
  .akn-learning-article .akn-entry-content > ul > li,
  .akn-learning-article .akn-entry-content > ol > li { padding-right: .8rem; }
  .akn-learning-article .akn-facts {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    overflow: hidden;
    border-block: 1px solid var(--akn-border);
    background: transparent;
  }
  .akn-learning-article .akn-facts li {
    display: flex;
    min-width: 0;
    align-items: center;
    justify-content: flex-start;
    gap: .35rem;
    min-height: 2.35rem;
    padding: .5rem .65rem;
    border-radius: 0;
    background: transparent;
    font-size: .78rem;
    line-height: 1.35;
    white-space: nowrap;
  }
  .akn-learning-article .akn-facts li + li { border-top: 1px solid var(--akn-border); }
  .akn-learning-article .akn-facts strong { display: inline; flex: 0 0 3.5rem; font-size: inherit; }
  .akn-learning-article .akn-facts .akn-fact--tags { gap: .25rem; padding-inline: .4rem; font-size: clamp(.62rem, 2.6vw, .72rem); }
  .akn-learning-article .akn-fact--tags strong { flex-basis: 2.25rem; }
  .akn-learning-article .akn-fact-value--desktop { display: none; }
  .akn-learning-article .akn-fact-value--mobile { display: inline; min-width: 0; }
  .akn-learning-article .akn-fact--author { display: none; }
}
.akn-video { margin: 2rem 0; }
.akn-video__frame { position: relative; overflow: hidden; aspect-ratio: 16 / 9; border-radius: .9rem; background: #071a33; }
.akn-video__frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.akn-video figcaption { margin-top: .45rem; font-size: .9rem; }
.akn-review-images { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }

.akn-learning-hero { background: linear-gradient(135deg, #f6f9fd 0%, #e7f1ff 100%); }
.akn-learning-list { display: grid; gap: .8rem; max-width: 54rem; }
.akn-learning-card { display: grid; grid-template-columns: 3.2rem minmax(0, 1fr) auto; gap: 1rem; align-items: center; padding: 1rem 1.2rem; color: var(--akn-navy-950); text-decoration: none; transition: transform .18s ease, border-color .18s ease; }
.akn-learning-card:hover { transform: translateY(-2px); border-color: var(--akn-blue-700); }
.akn-learning-card__number { display: grid; width: 3rem; height: 3rem; place-items: center; border-radius: 1rem; color: var(--akn-blue-700); background: var(--akn-blue-100); font-weight: 900; }
.akn-learning-card strong,
.akn-learning-card small { display: block; }
.akn-learning-card strong { font-size: 1.05rem; }
.akn-learning-card small { margin-top: .3rem; color: var(--akn-muted); line-height: 1.55; }
.akn-source-list { margin-bottom: 1.5rem; padding: 1rem; border-radius: .8rem; background: var(--akn-canvas); }
.akn-source-list h2 { margin-top: 0; font-size: 1.05rem; }
.akn-source-list a { overflow-wrap: anywhere; }
.akn-article-updated { margin: 0; }
.akn-learning-pagination { margin-top: 1.25rem; padding-top: 1.25rem; border-top: 1px solid var(--akn-border); }
.akn-learning-pagination__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem; }
.akn-learning-pagination__link {
  display: flex;
  min-width: 0;
  min-height: 7rem;
  flex-direction: column;
  justify-content: center;
  padding: 1rem;
  border: 1px solid var(--akn-border);
  border-radius: .8rem;
  color: var(--akn-navy-950);
  background: var(--akn-canvas);
  text-decoration: none;
  transition: border-color .18s ease, background-color .18s ease, transform .18s ease;
}
.akn-learning-pagination__link:hover { border-color: var(--akn-blue-700); background: var(--akn-blue-100); transform: translateY(-2px); }
.akn-learning-pagination__link--previous { grid-column: 1; align-items: flex-start; text-align: left; }
.akn-learning-pagination__link--next { grid-column: 2; align-items: flex-end; text-align: right; }
.akn-learning-pagination__direction { color: var(--akn-blue-700); font-size: .76rem; font-weight: 800; }
.akn-learning-pagination__number { margin-top: .45rem; color: var(--akn-muted); font: 800 .72rem/1.4 ui-monospace, monospace; }
.akn-learning-pagination__link strong { margin-top: .25rem; overflow-wrap: anywhere; font-size: .95rem; line-height: 1.5; }

@media (max-width: 1023px) {
  .akn-site-header .akn-primary-nav { background: #fff; box-shadow: var(--akn-shadow); }
  .akn-home-hero__grid { grid-template-columns: minmax(0, 1fr) 20rem; gap: 1.5rem; min-height: auto; }
  .akn-lesson-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .akn-lesson-list li:nth-child(3n) { border-right: 1px solid #c4ced7; }
  .akn-lesson-list li:nth-child(2n) { border-right: 0; }
}

@media (min-width: 1024px) {
  .akn-community-callout h2 { white-space: nowrap; }
}

@media (max-width: 767px) {
  .akn-home-hero__grid { display: flex; flex-direction: column; padding-block: 2.5rem 3rem; }
  .akn-home-hero__copy { width: 100%; }
  .akn-home-hero h1 { font-size: clamp(1.75rem, 7.4vw, 2.15rem); }
  .akn-home-hero__visual { order: -1; width: min(82%, 22rem); margin-inline: auto; }
  .akn-home-section-heading { display: block; }
  .akn-home-section-heading > a { display: inline-flex; margin-top: .8rem; }
  .akn-home-section-heading > p { margin-top: .7rem; }
  .akn-scene-index { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .65rem; }
  .akn-lesson-list { grid-template-columns: 1fr; }
  .akn-scene-link {
    grid-template-columns: minmax(0, 1fr);
    gap: .55rem;
    min-height: 10.5rem;
    padding: .8rem;
  }
  .akn-scene-link__number { width: 2rem; height: 2rem; border-radius: .55rem; font-size: .68rem; }
  .akn-scene-link strong { font-size: .92rem; line-height: 1.45; }
  .akn-scene-link small { font-size: .78rem; line-height: 1.45; }
  .akn-lesson-list li,
  .akn-lesson-list li:nth-child(2n),
  .akn-lesson-list li:nth-child(3n) { border-right: 0; }
  .akn-community-callout__inner { grid-template-columns: 1fr; }
  .akn-community-callout .akn-button { width: 100%; }
  .akn-editor-intro { display: block; }
  .akn-editor-progress { display: inline-flex; margin-top: .8rem; }
  .akn-category-choice-grid { grid-template-columns: 1fr; }
  .akn-media-list,
  .akn-review-images { grid-template-columns: 1fr; }
  .akn-learning-card { grid-template-columns: 2.6rem minmax(0, 1fr) auto; padding: .9rem; }
  .akn-learning-card__number { width: 2.5rem; height: 2.5rem; border-radius: .75rem; }
  .akn-learning-pagination__grid { gap: .5rem; }
  .akn-learning-pagination__link { min-height: 6.5rem; padding: .75rem .6rem; }
  .akn-learning-pagination__direction { font-size: .66rem; }
  .akn-learning-pagination__number { margin-top: .35rem; font-size: .66rem; }
  .akn-learning-pagination__link strong { font-size: .8rem; line-height: 1.45; }
}