/* ═══════════════════════════════════════════
   CheblAI — Apprendre l'IA / Learn AI / 学习 AI
   Styles dédiés aux guides (chargé après style.css)
═══════════════════════════════════════════ */

body.guides { font-family: 'Space Grotesk', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', -apple-system, system-ui, sans-serif; }
body.guides.lang-zh { line-height: 1.8; }

/* barre de progression de lecture */
#read-progress { position: fixed; top: 74px; left: 0; height: 3px; width: 0; background: linear-gradient(90deg, #4F8EF7, #9B6BF7); z-index: 99; pointer-events: none; }

/* sélecteur de langue en liens */
.lang-picker-menu a.lang-picker-item { text-decoration: none; box-sizing: border-box; }
.lang-picker-menu a.lang-picker-item:hover { opacity: 1; }
.sidebar-cta a[aria-current="true"] { border-color: #4F8EF7; color: #4F8EF7; }

.g-wrap { max-width: 1180px; margin: 0 auto; padding: 104px 24px 72px; }
.breadcrumb { font-size: .82rem; color: #8899AA; margin-bottom: 18px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.breadcrumb a { color: #6FA3FF; text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; opacity: 1; }
.breadcrumb [aria-current] { color: #C5D0E2; }

/* en-tête d'article */
.g-head { max-width: 820px; margin-bottom: 30px; }
.g-top { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 6px; }
.g-kicker { display: inline-block; font-size: .76rem; letter-spacing: .09em; text-transform: uppercase; color: #4F8EF7; font-weight: 700; }
.g-step { font-size: .76rem; color: #8899AA; border: 1px solid #25324A; border-radius: 999px; padding: 2px 10px; }
.g-head h1, .hub-hero h1 { font-size: clamp(1.9rem, 4.8vw, 3rem); line-height: 1.12; font-weight: 800; color: #fff; margin: .55rem 0 1rem; letter-spacing: -.01em; }
.lang-zh .g-head h1, .lang-zh .hub-hero h1 { letter-spacing: 0; line-height: 1.25; }
.g-lead { font-size: 1.12rem; line-height: 1.7; color: #C5D0E2; margin: 0 0 14px; max-width: 760px; }
.g-meta { display: flex; flex-wrap: wrap; gap: 6px 20px; color: #8899AA; font-size: .88rem; margin-bottom: 14px; }
.g-langs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: .82rem; color: #8899AA; }
.g-langs .pill { padding: 3px 12px; border-radius: 999px; border: 1px solid #25324A; color: #C5D0E2; text-decoration: none; }
.g-langs a.pill:hover { border-color: #4F8EF7; color: #4F8EF7; opacity: 1; }
.g-langs .pill.on { background: rgba(79,142,247,.15); border-color: rgba(79,142,247,.5); color: #6FA3FF; font-weight: 700; }

/* grille article + sommaire */
.g-grid { display: grid; grid-template-columns: minmax(0, 1fr) 270px; gap: 48px; align-items: start; }
.g-article { max-width: 790px; min-width: 0; }
.g-toc { position: sticky; top: 100px; max-height: calc(100vh - 130px); overflow: auto; border-left: 2px solid #1E2A3E; padding-left: 16px; }
.g-toc-title { font-size: .75rem; text-transform: uppercase; letter-spacing: .09em; color: #8899AA; font-weight: 700; margin-bottom: 8px; }
.g-toc a { display: block; padding: 6px 0; color: #8899AA; font-size: .88rem; line-height: 1.4; text-decoration: none; }
.g-toc a:hover { color: #fff; opacity: 1; }
.g-toc a.active { color: #4F8EF7; font-weight: 600; }
.toc-mobile { display: none; margin: 0 0 28px; border: 1px solid #1E2A3E; border-radius: 12px; background: #0D1420; }
.toc-mobile summary { cursor: pointer; padding: 12px 16px; font-weight: 700; color: #fff; font-size: .95rem; }
.toc-mobile div { padding: 0 16px 12px; }
.toc-mobile a { display: block; padding: 6px 0; color: #6FA3FF; font-size: .92rem; text-decoration: none; }

/* contenu */
.tldr { border: 1px solid rgba(79,142,247,.35); background: linear-gradient(135deg, rgba(79,142,247,.11), rgba(155,107,247,.08)); border-radius: 16px; padding: 20px 24px; margin: 0 0 30px; }
.g-article .tldr h2, .tldr h2 { font-size: .82rem; text-transform: uppercase; letter-spacing: .09em; color: #4F8EF7; margin: 0 0 10px; font-weight: 800; line-height: 1.3; }
.tldr ul { margin: 0; padding-left: 1.15rem; }
.tldr li { margin: .55rem 0; color: #E8EEF8; font-size: 1.02rem; line-height: 1.65; }

.g-article section { margin: 0 0 42px; scroll-margin-top: 100px; }
.g-article h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); color: #fff; margin: 0 0 14px; line-height: 1.25; font-weight: 800; }
.g-article h3 { font-size: 1.14rem; color: #fff; margin: 24px 0 8px; font-weight: 700; }
.g-article p, .g-article li { font-size: 1.04rem; line-height: 1.78; color: #C5D0E2; }
.lang-zh .g-article p, .lang-zh .g-article li { line-height: 1.95; font-size: 1.05rem; }
.g-article p { margin: 0 0 1rem; }
.g-article ul { padding-left: 1.3rem; margin: 0 0 1.1rem; }
.g-article li { margin-bottom: .55rem; }
.g-article strong { color: #fff; font-weight: 700; }
.g-article a { color: #6FA3FF; text-decoration: underline; text-decoration-color: rgba(111,163,255,.4); text-underline-offset: 3px; }
.g-article a:hover { text-decoration-color: #6FA3FF; opacity: 1; }

.guide-fig { margin: 26px 0; }
.guide-fig img { width: 100%; height: auto; display: block; border-radius: 16px; background: #0D1420; }
.guide-fig figcaption { font-size: .86rem; color: #8899AA; margin-top: 10px; text-align: center; line-height: 1.5; }
.guide-fig figcaption strong { color: #C5D0E2; }

.table-wrap { overflow-x: auto; margin: 22px 0; border: 1px solid #1E2A3E; border-radius: 12px; -webkit-overflow-scrolling: touch; }
.g-article table { width: 100%; border-collapse: collapse; font-size: .95rem; min-width: 520px; }
.g-article th { background: #111A30; color: #fff; text-align: left; padding: 12px 14px; font-size: .84rem; font-weight: 700; vertical-align: top; }
.g-article td { padding: 12px 14px; border-top: 1px solid #1A2440; color: #C5D0E2; vertical-align: top; line-height: 1.55; font-size: .95rem; }
.g-article tbody th { background: transparent; border-top: 1px solid #1A2440; font-size: .95rem; }

.callout { border-radius: 14px; padding: 16px 20px; margin: 24px 0; border: 1px solid; border-left-width: 4px; }
.callout p { margin: 0; font-size: 1rem; }
.callout-title { font-weight: 800; font-size: .76rem; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 6px; }
.callout-key { border-color: #4F8EF7; background: rgba(79,142,247,.08); } .callout-key .callout-title { color: #6FA3FF; }
.callout-myth { border-color: #F472B6; background: rgba(244,114,182,.07); } .callout-myth .callout-title { color: #F472B6; }
.callout-example { border-color: #2DD4BF; background: rgba(45,212,191,.07); } .callout-example .callout-title { color: #2DD4BF; }
.callout-warn { border-color: #FBBF24; background: rgba(251,191,36,.07); } .callout-warn .callout-title { color: #FBBF24; }
.callout-note { border-color: #8899AA; background: rgba(136,153,170,.07); } .callout-note .callout-title { color: #A0B0C8; }

.timeline { list-style: none; margin: 24px 0; padding: 0 0 0 20px; border-left: 2px solid #25324A; }
.timeline li { position: relative; padding: 0 0 24px 22px; margin: 0; }
.timeline li:last-child { padding-bottom: 4px; }
.timeline li::before { content: ''; position: absolute; left: -29px; top: 7px; width: 14px; height: 14px; border-radius: 50%; background: #4F8EF7; border: 3px solid #080C14; }
.tl-date { display: inline-block; font-weight: 800; color: #6FA3FF; background: rgba(79,142,247,.13); border-radius: 999px; padding: 2px 13px; font-size: .86rem; }
.tl-title { display: block; color: #fff; font-size: 1.07rem; margin: 8px 0 4px; }
.timeline p { margin: 0; }

.steps { counter-reset: s; list-style: none; margin: 22px 0; padding: 0; display: grid; gap: 12px; }
.steps li { counter-increment: s; display: flex; gap: 14px; background: #0D1420; border: 1px solid #1E2A3E; border-radius: 14px; padding: 14px 16px; margin: 0; }
.steps li::before { content: counter(s); flex: none; width: 32px; height: 32px; border-radius: 50%; background: linear-gradient(135deg, #4F8EF7, #9B6BF7); color: #fff; font-weight: 800; display: grid; place-items: center; font-size: .95rem; }
.steps li p { margin: 4px 0 0; font-size: 1rem; }

.faq-item { border: 1px solid #1E2A3E; border-radius: 12px; padding: 16px 18px; margin-bottom: 10px; background: #0D1420; }
.g-article .faq-q, .faq-q { font-size: 1.06rem; color: #fff; font-weight: 700; margin: 0 0 6px; }
.faq-item p { margin: 0; }

.sources ol { padding-left: 1.3rem; margin: 0; }
.sources li { font-size: .92rem; line-height: 1.6; margin-bottom: .45rem; word-break: break-word; }
.author-note { font-size: .86rem !important; color: #8899AA !important; border-top: 1px solid #1E2A3E; padding-top: 16px; margin-top: 8px; }

.cta-box { margin: 34px 0; padding: 26px; border-radius: 18px; border: 1px solid rgba(79,142,247,.4); background: linear-gradient(135deg, rgba(79,142,247,.13), rgba(155,107,247,.1)); }
.cta-box h2 { font-size: 1.3rem; color: #fff; margin: 0 0 8px; }
.cta-box p { color: #C5D0E2; margin: 0 0 16px; font-size: 1rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.cta-row .btn { text-decoration: none; }

.pn { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 30px 0; }
.pn-card { display: flex; flex-direction: column; gap: 4px; padding: 14px 16px; border: 1px solid #1E2A3E; border-radius: 12px; background: #0D1420; text-decoration: none !important; }
.pn-card span { font-size: .78rem; color: #8899AA; }
.pn-card strong { color: #fff; font-size: .98rem; line-height: 1.35; }
.pn-card:hover { border-color: #4F8EF7; opacity: 1; }
.pn-next { text-align: right; align-items: flex-end; }

.related h2 { margin-bottom: 14px; }
.rel-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.rel-card { display: flex; flex-direction: column; gap: 6px; padding: 14px 16px; border: 1px solid #1E2A3E; border-radius: 12px; background: #0D1420; text-decoration: none !important; }
.rel-card .k { font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: #4F8EF7; font-weight: 700; }
.rel-card strong { color: #fff; font-size: .98rem; line-height: 1.35; }
.rel-card .d { font-size: .8rem; color: #8899AA; }
.rel-card:hover { border-color: #4F8EF7; opacity: 1; }

/* page d'accueil du parcours */
.hub-hero { max-width: 860px; margin-bottom: 36px; }
.hub-hero .g-lead { font-size: 1.15rem; }
.hub-hero .cta-row { margin-top: 18px; }
.hub section { margin-bottom: 44px; }
.hub section > h2, .hub-faq > h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); color: #fff; margin: 0 0 16px; font-weight: 800; }
.hub-start p { color: #C5D0E2; max-width: 760px; font-size: 1.05rem; line-height: 1.75; margin: 0; }
.hub-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.hub-card { position: relative; display: flex; flex-direction: column; gap: 8px; padding: 22px 20px 18px; border: 1px solid #1E2A3E; border-radius: 16px; background: #0D1420; text-decoration: none !important; transition: border-color .2s, transform .2s; }
.hub-card:hover { border-color: #4F8EF7; transform: translateY(-2px); opacity: 1; }
.hub-card.wide { max-width: 100%; }
.hub-n { position: absolute; top: 16px; right: 16px; width: 30px; height: 30px; border-radius: 50%; background: linear-gradient(135deg, #4F8EF7, #9B6BF7); color: #fff; font-weight: 800; display: grid; place-items: center; font-size: .9rem; }
.hub-k { font-size: .72rem; text-transform: uppercase; letter-spacing: .09em; color: #4F8EF7; font-weight: 700; padding-right: 40px; }
.hub-card h3 { font-size: 1.12rem; color: #fff; margin: 0; line-height: 1.3; font-weight: 700; }
.hub-card p { margin: 0; color: #A0B0C8; font-size: .93rem; line-height: 1.6; }
.hub-m { margin-top: auto; font-size: .8rem; color: #6FA3FF; font-weight: 600; padding-top: 6px; }
.hub-facts ul { padding-left: 1.2rem; margin: 0; }
.hub-facts li { color: #C5D0E2; margin-bottom: .5rem; font-size: 1.02rem; line-height: 1.65; }
.hub-faq { max-width: 860px; }

/* glossaire */
.gl-tools { max-width: 790px; margin-bottom: 26px; position: sticky; top: 80px; z-index: 5; background: rgba(8,12,20,.94); padding: 10px 0; backdrop-filter: blur(8px); }
#gl-search { width: 100%; box-sizing: border-box; padding: 12px 16px; border-radius: 12px; border: 1px solid #25324A; background: #0D1420; color: #fff; font-size: 1rem; font-family: inherit; }
#gl-search:focus { outline: none; border-color: #4F8EF7; }
.gl-letters { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.gl-letters a { min-width: 30px; text-align: center; padding: 4px 8px; border-radius: 8px; border: 1px solid #1E2A3E; color: #C5D0E2; font-size: .85rem; text-decoration: none; font-weight: 600; }
.gl-letters a:hover { border-color: #4F8EF7; color: #4F8EF7; opacity: 1; }
.gl-group { margin-bottom: 26px !important; scroll-margin-top: 170px !important; }
.gl-letter { font-size: 1.6rem !important; color: #4F8EF7 !important; border-bottom: 1px solid #1E2A3E; padding-bottom: 6px; }
.gl-list dl { margin: 0; }
.gl-term { padding: 14px 0; border-bottom: 1px solid #14203A; scroll-margin-top: 170px; }
.gl-term dt { color: #fff; font-weight: 800; font-size: 1.08rem; margin-bottom: 4px; }
.gl-term dd { margin: 0; color: #C5D0E2; line-height: 1.7; font-size: 1rem; }
.gl-link { white-space: nowrap; font-size: .88rem; }
.gl-empty { color: #8899AA; padding: 20px 0; }
.gl-term[hidden], .gl-group[hidden], .gl-empty[hidden] { display: none; }

/* responsive */
@media (max-width: 1000px) {
  .g-grid { grid-template-columns: minmax(0, 1fr); }
  .g-toc { display: none; }
  .toc-mobile { display: block; }
}
@media (max-width: 640px) {
  .g-wrap { padding: 94px 16px 56px; }
  .tldr { padding: 16px 18px; }
  .g-article p, .g-article li { font-size: 1rem; }
  .timeline { padding-left: 14px; }
  .timeline li { padding-left: 18px; }
  .timeline li::before { left: -23px; }
  .pn { grid-template-columns: 1fr; }
  .pn-next { text-align: left; align-items: flex-start; }
  .hub-grid { grid-template-columns: 1fr; }
  .gl-tools { top: 74px; }
}
@media (prefers-reduced-motion: reduce) { .hub-card { transition: none; } .hub-card:hover { transform: none; } }