/* DOXA AI Course · Editorial workspace · 2026-08-09 */
:root {
  --course-current: #9f3b37;
  --course-current-soft: #fbefed;
}

body { background: var(--doxa-paper); }

.course-shell { width: min(100% - 48px, 1180px); margin-inline: auto; }

.site-nav { display: grid; grid-template-columns: auto 1fr; }
.site-nav .nav-links,
.site-nav .nav-actions { justify-content: flex-end; }
.site-nav .nav-link { color: #272a32; font-size: .88rem; }
.site-nav .nav-link:hover,
.site-nav .nav-link.is-active { color: var(--doxa-indigo); }

.course-intro { background: #fff; border-bottom: 1px solid var(--doxa-line); }
.course-intro-grid { display: grid; grid-template-columns: minmax(0, 1fr) 350px; gap: 72px; align-items: center; padding-top: 42px; padding-bottom: 38px; }
.course-breadcrumb { margin: 0 0 12px; color: var(--doxa-faint); font-size: .75rem; font-weight: 650; letter-spacing: .06em; }
.course-copy h1 { margin: 0; color: var(--doxa-indigo); font-family: var(--font-serif); font-size: clamp(2.4rem, 5vw, 3.5rem); line-height: 1.2; letter-spacing: -.035em; }
.course-copy .lead { max-width: 720px; margin: 14px 0 0; color: var(--doxa-gray); font-size: .98rem; line-height: 1.75; }

.course-progress-summary { padding-left: 30px; border-left: 1px solid var(--doxa-line); }
.course-progress-summary .progress-label { display: block; color: var(--doxa-faint); font-size: .72rem; }
.course-progress-summary .progress-value { display: flex; align-items: baseline; gap: 8px; margin: 5px 0 12px; color: var(--doxa-indigo); font-family: var(--font-serif); }
.course-progress-summary .progress-value strong { font-size: 1.9rem; line-height: 1; }
.course-progress-summary .progress-value span { font-size: .82rem; }
.course-progress-summary .progress-track { height: 6px; margin-bottom: 16px; background: #ebeae5; }
.course-progress-summary .progress-track i { display: block; width: 0; height: 100%; background: var(--doxa-indigo); transition: width .3s; }
.course-progress-summary .overall-actions { margin: 0; display: flex; gap: 8px; }

.course-statbar { background: #fff; border-bottom: 1px solid var(--doxa-line); }
.course-statbar-inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.course-statbar .stat { padding: 15px 20px; border-left: 1px solid var(--doxa-line); }
.course-statbar .stat:first-child { padding-left: 0; border-left: 0; }
.course-statbar .stat .v { font-size: 1.05rem; color: var(--doxa-indigo); }
.course-statbar .stat .k { margin-top: 2px; font-size: .7rem; }

.course-tools { padding: 22px 0 10px; }
.toolbar { max-width: none; margin: 0; padding: 0; align-items: center; }
.filters { gap: 0; padding: 0; border-radius: 4px; background: #fff; overflow: hidden; }
.filters button { border-radius: 0; border-left: 1px solid var(--doxa-line); padding: 7px 16px; }
.filters button:first-child { border-left: 0; }
.filters button.active { background: var(--doxa-indigo); }
.tool-actions .btn { min-height: 34px; padding: 6px 12px; border-radius: 3px; }

.mstrip { max-width: none; margin: 16px 0 0; padding: 0; grid-template-columns: repeat(8, 1fr); gap: 0; border: 1px solid var(--doxa-line); background: #fff; }
.mstrip .mcell { min-width: 0; padding: 11px 10px; border: 0; border-left: 1px solid var(--doxa-line); border-radius: 0; text-align: left; }
.mstrip .mcell:first-child { border-left: 0; }
.mstrip .mcell .mn { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mstrip .mcell .mp { font-size: .88rem; }
.mstrip .mcell .mini-bar { height: 2px; border-radius: 0; }
.mstrip .mcell .mini-bar i { border-radius: 0; }

#modules { max-width: 1180px; margin: 18px auto 64px; padding: 0 24px; gap: 12px; }
.module { border: 1px solid var(--doxa-line); border-radius: 4px; box-shadow: none; }
.module-head { width: 100%; border: 0; background: #fff; color: inherit; text-align: left; font: inherit; }
.module-head:hover { background: #fcfcfa; }
.module-num { width: 42px; height: 42px; border-radius: 3px; background: var(--doxa-indigo) !important; font-family: var(--font-sans); font-size: .95rem; }
.module-info h2 { margin: 0; color: var(--doxa-ink); font-family: var(--font-serif); font-size: 1.15rem; }
.module-info .sub { margin-top: 3px; font-size: .78rem; }
.module-info .weeks { font-size: .7rem; }
.module-pbar { flex-basis: 150px; }
.module-pbar .pnum { font-size: .9rem; }
.module-pbar .bar { height: 3px; border-radius: 0; }
.module-pbar .bar i { border-radius: 0; }
.module-chev { min-width: 40px; color: var(--doxa-indigo); font-size: .72rem; font-weight: 700; text-align: right; }
.module.open .module-chev { transform: none; }
.module-body { padding: 0 20px 18px; background: #fff; }
.module-note { display: none; }

.day { margin: 0; border: 0; border-bottom: 1px solid var(--doxa-line); border-radius: 0; }
.day:first-of-type { border-top: 1px solid var(--doxa-line); }
.day.done { border-color: var(--doxa-line); }
.day-head { min-height: 50px; padding: 10px 8px; }
.day-head:hover { background: #fcfcfa; }
.day.open .day-head { background: var(--doxa-indigo-soft); }
.chk { width: 20px; height: 20px; border-radius: 3px; }
.day-num { min-width: 44px; }
.day-title { font-size: .86rem; }
.day-chev { min-width: 36px; color: var(--doxa-indigo); font-size: .7rem; font-weight: 700; text-align: right; }
.day.open .day-chev { transform: none; }
.day-body { padding: 8px 14px 22px 76px; border-top: 0; background: #fff; }
.dsec h4::before { display: none; }
.dsec .think, .dsec .work, .detail .ex, .vizbox { border-radius: 3px; }
.links a { border-radius: 3px; color: var(--doxa-indigo); background: #fff; border-color: var(--doxa-line); }
.links a:hover { background: var(--doxa-indigo); }

.site-foot { max-width: 1180px; padding: 30px 24px 54px; text-align: left; }
.site-foot .slogan { color: var(--doxa-indigo); }

@media (max-width: 900px) {
  .course-intro-grid { grid-template-columns: 1fr; gap: 26px; }
  .course-progress-summary { padding-left: 0; padding-top: 22px; border-left: 0; border-top: 1px solid var(--doxa-line); }
  .mstrip { grid-template-columns: repeat(4, 1fr); }
  .mstrip .mcell:nth-child(5) { border-left: 0; }
  .mstrip .mcell:nth-child(n+5) { border-top: 1px solid var(--doxa-line); }
}

@media (max-width: 720px) {
  .course-shell { width: min(100% - 32px, 1180px); }
  .site-nav { display: flex; }
  .site-nav .nav-links { width: 100%; justify-content: flex-start; overflow-x: auto; scrollbar-width: thin; padding-top: 8px; border-top: 1px solid var(--doxa-line); }
  .course-intro-grid { padding-top: 30px; padding-bottom: 28px; }
  .course-statbar-inner { grid-template-columns: 1fr 1fr; }
  .course-statbar .stat { border-top: 1px solid var(--doxa-line); }
  .course-statbar .stat:nth-child(odd) { padding-left: 0; border-left: 0; }
  .course-statbar .stat:nth-child(-n+2) { border-top: 0; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .tool-actions { justify-content: flex-start; }
  .mstrip { grid-template-columns: repeat(2, 1fr); }
  .mstrip .mcell:nth-child(odd) { border-left: 0; }
  .mstrip .mcell:nth-child(n+3) { border-top: 1px solid var(--doxa-line); }
  #modules { padding: 0 16px; }
  .module-head { gap: 10px; padding: 14px 12px; }
  .module-pbar { flex-basis: 64px; }
  .module-info .sub { display: none; }
  .module-info .weeks { display: block; }
  .day-body { padding-left: 14px; }
}

@media (max-width: 480px) {
  .course-progress-summary .overall-actions { flex-direction: column; }
  .course-progress-summary .btn { width: 100%; }
  .filters { width: 100%; }
  .filters button { flex: 1; }
  .module-num { width: 34px; height: 34px; }
  .module-pbar { display: none; }
}

/* ============================================
   Python 入门线 · 代码高亮（01-basics 起 9 节点共用）
   ============================================ */
.lesson-body code .fn, .lesson-body pre .fn { color: #B3261E; }
.lesson-body code .kw, .lesson-body pre .kw { color: #1E2A78; font-weight: 700; }
.lesson-body code .st, .lesson-body pre .st { color: #0A7A4F; }
.lesson-body code .nu, .lesson-body pre .nu { color: #A9600B; }
.lesson-body code .cm, .lesson-body pre .cm { color: var(--doxa-faint); font-style: italic; }

/* ============================================
   AI 学院板块导航（学习路径/知识图谱/Python 地基）
   ============================================ */
.ai-boards { background: #fff; border-bottom: 1px solid var(--doxa-line); }
.nav-actions .academy-menu-panel { left: auto; right: 0; }
.ai-boards .course-shell { display: flex; gap: 24px; padding: 0; flex-wrap: wrap; }
.ai-boards a {
  display: inline-flex; min-height: 44px; align-items: center;
  padding: 0; font-size: .8rem; font-weight: 650;
  color: var(--doxa-gray); text-decoration: none; background: transparent; border-radius: 0;
  border-bottom: 2px solid transparent; transition: color .15s, border-color .15s;
}
.ai-boards a:hover { color: var(--doxa-indigo); background: transparent; }
.ai-boards a.is-active { color: var(--doxa-indigo); background: transparent; border-bottom-color: var(--doxa-indigo); }

.python-banner .pb-emoji {
  display: inline-flex;
  width: 30px;
  height: 30px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,.35);
  color: #fff;
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .04em;
}

/* ============================================
   AI 学习控制台 · 起步路径与可验证阶段成果
   ============================================ */
.starter-bridge { border-bottom: 1px solid var(--doxa-line); background: #fff; }
.starter-bridge-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) auto minmax(230px, .68fr); gap: 28px; align-items: center; padding: 23px 0; }
.starter-copy h2 { margin: 0; color: var(--doxa-indigo); font-family: var(--font-serif); font-size: 1.38rem; letter-spacing: -.02em; }
.starter-copy p:not(.course-breadcrumb) { max-width: 680px; margin: 7px 0 0; color: var(--doxa-gray); font-size: .83rem; line-height: 1.7; }
.starter-actions { display: flex; flex-direction: column; gap: 7px; min-width: 164px; }
.starter-actions .btn { min-height: 36px; padding: 7px 11px; border-radius: 3px; font-size: .78rem; white-space: nowrap; }
.starter-proof { display: grid; gap: 5px; padding-left: 20px; border-left: 2px solid var(--doxa-verified); color: var(--doxa-gray); font-size: .78rem; line-height: 1.55; }
.starter-proof span { color: var(--doxa-verified); font-size: .68rem; font-weight: 800; letter-spacing: .08em; }
.starter-proof strong { color: var(--doxa-ink); font-size: .84rem; font-weight: 650; }

.module-evidence { display: grid; grid-template-columns: 1fr 1.35fr; gap: 0; margin: 18px 0 8px; border: 1px solid var(--doxa-line); background: #fdfdfb; }
.evidence-item { display: grid; gap: 5px; padding: 14px 16px; border-left: 3px solid var(--doxa-indigo); }
.evidence-item + .evidence-item { border-left: 1px solid var(--doxa-line); }
.evidence-check { border-left: 3px solid var(--doxa-verified); background: #f8fcfa; }
.evidence-item span { color: var(--doxa-faint); font-size: .66rem; font-weight: 800; letter-spacing: .08em; }
.evidence-item strong { color: var(--doxa-ink); font-size: .79rem; font-weight: 600; line-height: 1.65; }
.verification { margin-top: 10px; padding: 10px 13px; border: 1px solid var(--doxa-line); border-left: 3px solid #B45309; background: #fffaf0; }
.verification h4 { margin-bottom: 3px; color: #8a5600; }
.verification p { margin: 0; color: var(--doxa-gray); font-size: .81rem; line-height: 1.65; }

.module-head:focus-visible, .day-head:focus-visible, .mstrip .mcell:focus-visible, .btn:focus-visible, .filters button:focus-visible { outline: 3px solid rgba(30,42,120,.28); outline-offset: 3px; }
.btn, .module, .mstrip .mcell, .day, .filters button { transition-timing-function: cubic-bezier(.23,1,.32,1); }
.btn:active { transform: scale(.97); }

@media (max-width: 980px) {
  .starter-bridge-grid { grid-template-columns: 1fr auto; }
  .starter-proof { grid-column: 1 / -1; padding: 12px 0 0; border-top: 1px solid var(--doxa-line); border-left: 0; }
}
@media (max-width: 720px) {
  .starter-bridge-grid { grid-template-columns: 1fr; gap: 14px; padding: 20px 0; }
  .starter-actions { flex-direction: row; min-width: 0; }
  .starter-actions .btn { flex: 1; }
  .starter-proof { grid-column: auto; }
  .module-evidence { grid-template-columns: 1fr; }
  .evidence-item + .evidence-item { border-top: 1px solid var(--doxa-line); border-left: 3px solid var(--doxa-verified); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* ============================================
   2026-08-27 设计优化（pi）：语言引导/当前模块/移动端/排版
   ============================================ */

/* 学习契约区（原内联样式收编） */
.contract-section { background: var(--doxa-paper); border-top: 1px solid var(--doxa-line); border-bottom: 1px solid var(--doxa-line); }
.contract-shell { padding: 28px 0; }
.contract-title { margin: 6px 0; font-size: 1.4rem; color: var(--doxa-indigo); }
.contract-text { margin: 8px 0 0; max-width: 780px; color: var(--doxa-gray); line-height: 1.7; }

/* 统计条图标 */
.course-statbar .stat .v { display: flex; align-items: center; gap: 6px; }
.course-statbar .stat .si { font-style: normal; font-size: .92rem; }

/* 当前应学模块引导 */
.module.is-current { border-color: var(--course-current); box-shadow: 0 0 0 3px rgba(159,59,55,.10); }
.mstrip .mcell.is-current { box-shadow: inset 0 -3px 0 var(--course-current); }
.mstrip .mcell.is-current .mn { color: var(--course-current); font-weight: 700; }
.current-badge {
  display: inline-flex; align-items: center;
  padding: 2px 10px; border-radius: 999px;
  background: var(--course-current); color: #fff;
  font-family: var(--font-sans); font-size: .66rem; font-weight: 700; letter-spacing: .04em;
}

/* Reset 降级为文字链 */
.btn-text-danger {
  background: none; border: 0; padding: 8px 6px; cursor: pointer;
  color: var(--doxa-faint); font: inherit; font-size: .75rem; text-decoration: underline; text-underline-offset: 3px;
  transition: color .15s;
}
.btn-text-danger:hover { color: #b3261e; }

/* localStorage 提示（工具区内，比页脚显著） */
.ls-hint { margin: 10px 0 0; color: var(--doxa-faint); font-size: .72rem; }

/* 移动端：AI 学院子导航单行滚动 + 边缘渐隐；Python 横幅换行 */
@media (max-width: 720px) {
  .ai-boards .course-shell {
    flex-wrap: nowrap; gap: 18px;
    overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 14px, #000 calc(100% - 26px), transparent);
    mask-image: linear-gradient(90deg, transparent, #000 14px, #000 calc(100% - 26px), transparent);
  }
  .ai-boards .course-shell::-webkit-scrollbar { display: none; }
  .ai-boards a { flex: 0 0 auto; white-space: nowrap; }
  .python-banner .course-shell { padding: 12px 0; }
  .python-banner a { flex-wrap: wrap; row-gap: 5px; }
  .python-banner .pb-text { flex: 1 1 calc(100% - 46px); min-width: 0; word-break: break-word; }
  .python-banner .pb-go { flex: 0 0 auto; margin-left: 44px; }
  .ls-hint { margin: 8px 0 0; }
}

/* 展开提示做成可点的胶囊（提示可供点击的区域） */
.module-chev { min-width: 0; text-align: center; }
.day-chev { min-width: 0; text-align: center; }