/* ============================================================
   广印学院样式 v1.0（2026-09-16）
   - 独立命名空间 .ac-*，不修改主站任何现有类
   - 色板沿用主站令牌，版面按「教育感」重排（大留白 / 卡片化）
   ============================================================ */

/* ---------- 页面底 ---------- */
.ac-body { background: var(--color-bg, #F7F9FC); }

/* ---------- 学院导航 ---------- */
.ac-nav {
  position: sticky; top: 0; z-index: 900;
  background: rgba(255,255,255,0.96);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-border, #E3EAF3);
}
.ac-nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 68px; }
.ac-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; flex: 0 0 auto; }
.ac-brand-mark {
  width: 44px; height: 44px; border-radius: 12px; flex: 0 0 auto;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-dark, #0D47A1), var(--color-primary, #1E88E5));
  color: #fff; font-size: 0.95rem; font-weight: 700; letter-spacing: 1px;
}
.ac-brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.ac-brand-text strong { font-size: 1.12rem; color: var(--color-primary-dark, #0D47A1); }
.ac-brand-text small { font-size: 0.7rem; color: var(--color-text-light, #5B6B80); }

.ac-nav-links { display: flex; align-items: center; gap: 2px; }
.ac-nav-links > a {
  padding: 9px 13px; border-radius: 9px; font-size: 0.92rem;
  color: var(--color-text, #1F2A3A); text-decoration: none; transition: background .18s, color .18s;
}
.ac-nav-links > a:hover { background: var(--color-primary-bg, #E9F2FC); color: var(--color-primary, #1E88E5); }
.ac-nav-links > a.active { color: var(--color-primary, #1E88E5); font-weight: 600; background: var(--color-primary-bg, #E9F2FC); }
.ac-nav-cta {
  margin-left: 8px; background: var(--color-accent, #FFC107) !important;
  color: #0B1F3A !important; font-weight: 600;
}
.ac-nav-cta:hover { background: var(--color-accent-dark, #E8A800) !important; }
.ac-nav-toggle {
  display: none; flex-direction: column; gap: 4px; background: none; border: 0; cursor: pointer; padding: 8px;
}
.ac-nav-toggle span { display: block; width: 22px; height: 2px; background: var(--color-primary-dark, #0D47A1); border-radius: 2px; }

/* ---------- 学院 hero ---------- */
.ac-hero {
  background: linear-gradient(135deg, #0D47A1 0%, #1565C0 45%, #1E88E5 100%);
  color: #fff; padding: 54px 0 46px;
}
.ac-hero h1 { font-size: 2.15rem; margin-bottom: 10px; color: #fff; }
.ac-hero p { font-size: 1rem; color: rgba(255,255,255,0.9); max-width: 760px; margin: 0; }
.ac-crumb { margin-top: 16px; font-size: 0.82rem; color: rgba(255,255,255,0.72); }
.ac-crumb a { color: rgba(255,255,255,0.9); text-decoration: none; }
.ac-crumb a:hover { text-decoration: underline; }

/* ---------- 通用块 ---------- */
.ac-sec { padding: 52px 0; }
.ac-sec-alt { background: #fff; }
.ac-sec-head { margin-bottom: 28px; }
.ac-sec-head h2 { font-size: 1.6rem; color: var(--color-primary-dark, #0D47A1); margin-bottom: 8px; }
.ac-sec-head p { color: var(--color-text-light, #5B6B80); margin: 0; }
.ac-sec-head .ac-more { float: right; font-size: 0.88rem; color: var(--color-primary, #1E88E5); text-decoration: none; margin-top: 8px; }

/* ---------- 卡片 ---------- */
.ac-grid { display: grid; gap: 20px; }
.ac-grid-2 { grid-template-columns: repeat(2, 1fr); }
.ac-grid-3 { grid-template-columns: repeat(3, 1fr); }
.ac-grid-4 { grid-template-columns: repeat(4, 1fr); }

.ac-card {
  background: #fff; border: 1px solid var(--color-border, #E3EAF3); border-radius: 14px;
  padding: 22px; display: flex; flex-direction: column;
  box-shadow: 0 2px 10px rgba(15, 40, 80, 0.045);
  transition: transform .2s var(--ease-out, ease), box-shadow .2s;
}
.ac-card:hover { transform: translateY(-3px); box-shadow: 0 10px 26px rgba(15, 40, 80, 0.10); }
.ac-card h3 { font-size: 1.06rem; color: var(--color-primary-dark, #0D47A1); margin-bottom: 8px; }
.ac-card p { color: var(--color-text-light, #5B6B80); font-size: 0.9rem; margin-bottom: 14px; }
.ac-card .ac-actions { margin-top: auto; display: flex; gap: 8px; flex-wrap: wrap; }
.ac-ico {
  width: 44px; height: 44px; border-radius: 12px; margin-bottom: 14px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-primary-bg, #E9F2FC); color: var(--color-primary, #1E88E5);
  font-size: 1.15rem; font-weight: 700;
}

/* ---------- 按钮 ---------- */
.ac-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 18px; border-radius: 9px; font-size: 0.9rem; font-weight: 500;
  text-decoration: none; cursor: pointer; border: 1px solid transparent; transition: all .18s;
}
.ac-btn-primary { background: var(--color-primary, #1E88E5); color: #fff; }
.ac-btn-primary:hover { background: var(--color-primary-dark, #0D47A1); }
.ac-btn-ghost { background: #fff; color: var(--color-primary, #1E88E5); border-color: var(--color-primary, #1E88E5); }
.ac-btn-ghost:hover { background: var(--color-primary-bg, #E9F2FC); }
.ac-btn-accent { background: var(--color-accent, #FFC107); color: #0B1F3A; font-weight: 600; }
.ac-btn-accent:hover { background: var(--color-accent-dark, #E8A800); }
.ac-btn-sm { padding: 7px 13px; font-size: 0.83rem; }
.ac-btn-block { width: 100%; }

/* ---------- 分类 tab ---------- */
.ac-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.ac-tab {
  padding: 8px 16px; border-radius: 999px; font-size: 0.89rem; text-decoration: none;
  background: #fff; border: 1px solid var(--color-border, #E3EAF3); color: var(--color-text, #1F2A3A);
}
.ac-tab:hover { border-color: var(--color-primary, #1E88E5); color: var(--color-primary, #1E88E5); }
.ac-tab.active { background: var(--color-primary, #1E88E5); border-color: var(--color-primary, #1E88E5); color: #fff; font-weight: 500; }
.ac-tab em { font-style: normal; opacity: 0.7; font-size: 0.8rem; margin-left: 4px; }

/* ---------- 文章卡 ---------- */
.ac-post {
  background: #fff; border: 1px solid var(--color-border, #E3EAF3); border-radius: 14px;
  padding: 22px; display: flex; flex-direction: column; transition: all .2s;
}
.ac-post:hover { border-color: var(--color-primary, #1E88E5); box-shadow: 0 8px 22px rgba(15, 40, 80, 0.08); }
.ac-post-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; font-size: 0.78rem; }
.ac-post-cat { background: var(--color-primary-bg, #E9F2FC); color: var(--color-primary, #1E88E5); padding: 3px 9px; border-radius: 4px; }
.ac-post-date { color: var(--color-text-light, #5B6B80); }
.ac-post h3 { font-size: 1.04rem; color: var(--color-primary-dark, #0D47A1); margin-bottom: 8px; line-height: 1.5; }
.ac-post p { color: var(--color-text-light, #5B6B80); font-size: 0.87rem; margin-bottom: 14px; }
.ac-post-foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.ac-post-foot a { font-size: 0.87rem; color: var(--color-primary, #1E88E5); text-decoration: none; }
.ac-fav {
  background: none; border: 1px solid var(--color-border, #E3EAF3); border-radius: 7px;
  padding: 4px 10px; font-size: 0.78rem; cursor: pointer; color: var(--color-text-light, #5B6B80);
}
.ac-fav:hover { border-color: var(--color-accent-dark, #E8A800); color: var(--color-accent-dark, #E8A800); }
.ac-fav.on { background: var(--color-accent, #FFC107); border-color: var(--color-accent, #FFC107); color: #0B1F3A; font-weight: 600; }

/* ---------- 文章阅读 ---------- */
.ac-reader { background: #fff; border: 1px solid var(--color-border, #E3EAF3); border-radius: 14px; padding: 34px 38px; }
.ac-reader h1 { font-size: 1.65rem; color: var(--color-primary-dark, #0D47A1); line-height: 1.45; margin-bottom: 12px; }
.ac-reader-meta { font-size: 0.83rem; color: var(--color-text-light, #5B6B80); padding-bottom: 18px; border-bottom: 1px solid var(--color-border, #E3EAF3); margin-bottom: 22px; }
.ac-reader-body { font-size: 1rem; line-height: 1.85; color: var(--color-text, #1F2A3A); }
.ac-reader-body h3 { font-size: 1.12rem; color: var(--color-primary-dark, #0D47A1); margin: 26px 0 10px; }
.ac-reader-body p { margin: 0 0 14px; }
.ac-reader-body ul { margin: 0 0 16px; padding-left: 22px; }
.ac-reader-body li { margin-bottom: 7px; }
.ac-reader-body a { color: var(--color-primary, #1E88E5); }
.ac-reader-foot { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--color-border, #E3EAF3); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

.ac-relate { margin-top: 26px; background: var(--color-primary-bg, #E9F2FC); border-radius: 12px; padding: 20px 22px; }
.ac-relate h4 { font-size: 0.96rem; color: var(--color-primary-dark, #0D47A1); margin-bottom: 12px; }
.ac-relate ul { margin: 0; padding: 0; list-style: none; }
.ac-relate li { padding: 7px 0; font-size: 0.9rem; }
.ac-relate a { color: var(--color-primary, #1E88E5); text-decoration: none; }
.ac-relate a:hover { text-decoration: underline; }

/* ---------- 课程卡 ---------- */
.ac-course {
  background: #fff; border: 1px solid var(--color-border, #E3EAF3); border-radius: 14px;
  overflow: hidden; display: flex; flex-direction: column; transition: all .2s;
}
.ac-course:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(15, 40, 80, 0.10); }
.ac-course-cover {
  height: 132px; background: linear-gradient(135deg, #0D47A1, #1E88E5);
  display: flex; align-items: center; justify-content: center; color: #fff;
  font-size: 1.5rem; font-weight: 700; letter-spacing: 2px;
}
.ac-course-cover.craft { background: linear-gradient(135deg, #0B6E6E, #12A0A0); }
.ac-course-cover.sales { background: linear-gradient(135deg, #7A4500, #C97B10); }
.ac-course-cover.store { background: linear-gradient(135deg, #0D47A1, #1E88E5); }
.ac-course-cover.design { background: linear-gradient(135deg, #4A2A7A, #7B52C9); }
.ac-course-cover.safety { background: linear-gradient(135deg, #8A2B1F, #C4472F); }
.ac-course-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.ac-course-body h3 { font-size: 1.05rem; color: var(--color-primary-dark, #0D47A1); margin-bottom: 8px; }
.ac-course-body p { font-size: 0.87rem; color: var(--color-text-light, #5B6B80); margin-bottom: 14px; }
.ac-course-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.ac-chip { font-size: 0.75rem; padding: 3px 9px; border-radius: 5px; background: #F1F5FA; color: var(--color-text-light, #5B6B80); }
.ac-course-body .ac-actions { margin-top: auto; }

/* ---------- 课时表 ---------- */
.ac-lessons { width: 100%; border-collapse: collapse; margin: 6px 0 22px; }
.ac-lessons th, .ac-lessons td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--color-border, #E3EAF3); font-size: 0.92rem; }
.ac-lessons th { background: var(--color-primary-bg, #E9F2FC); color: var(--color-primary-dark, #0D47A1); font-weight: 600; }
.ac-lessons td:first-child { width: 60px; color: var(--color-primary, #1E88E5); font-weight: 600; }
.ac-lessons td:last-child { width: 90px; text-align: right; color: var(--color-text-light, #5B6B80); }

/* ---------- 课程信息条 ---------- */
.ac-info-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 26px; }
.ac-info-cell { background: var(--color-primary-bg, #E9F2FC); border-radius: 11px; padding: 16px 18px; }
.ac-info-cell small { display: block; font-size: 0.76rem; color: var(--color-text-light, #5B6B80); margin-bottom: 5px; }
.ac-info-cell strong { font-size: 0.98rem; color: var(--color-primary-dark, #0D47A1); }

/* ---------- 表单 ---------- */
.ac-form { display: grid; gap: 14px; }
.ac-field label { display: block; font-size: 0.86rem; color: var(--color-text, #1F2A3A); margin-bottom: 6px; font-weight: 500; }
.ac-field .req { color: var(--color-danger, #D93025); }
.ac-field input, .ac-field select, .ac-field textarea {
  width: 100%; padding: 11px 13px; border: 1px solid var(--color-border, #E3EAF3);
  border-radius: 9px; font-size: 0.92rem; font-family: inherit; background: #fff; color: var(--color-text, #1F2A3A);
}
.ac-field input:focus, .ac-field select:focus, .ac-field textarea:focus {
  outline: none; border-color: var(--color-primary, #1E88E5); box-shadow: 0 0 0 3px rgba(30,136,229,0.12);
}
.ac-field textarea { min-height: 92px; resize: vertical; }
.ac-form-note { font-size: 0.78rem; color: var(--color-text-light, #5B6B80); }
.ac-form-msg { font-size: 0.86rem; padding: 10px 13px; border-radius: 8px; display: none; }
.ac-form-msg.ok { display: block; background: #E8F5E9; color: #1B5E20; }
.ac-form-msg.err { display: block; background: #FDECEA; color: #B71C1C; }

.ac-side-form { background: #fff; border: 1px solid var(--color-border, #E3EAF3); border-radius: 14px; padding: 24px; }
.ac-side-form h3 { font-size: 1.08rem; color: var(--color-primary-dark, #0D47A1); margin-bottom: 6px; }
.ac-side-form > p { font-size: 0.84rem; color: var(--color-text-light, #5B6B80); margin-bottom: 18px; }

/* ---------- 布局：主 + 侧 ---------- */
.ac-split { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 30px; align-items: start; }
.ac-split-side { position: sticky; top: 88px; }

/* ---------- 工具集 ---------- */
.ac-tool { background: #fff; border: 1px solid var(--color-border, #E3EAF3); border-radius: 14px; padding: 26px; scroll-margin-top: 86px; }
.ac-anchor { display: block; height: 0; scroll-margin-top: 86px; }
.ac-tool h3 { font-size: 1.18rem; color: var(--color-primary-dark, #0D47A1); margin-bottom: 8px; }
.ac-tool > p { font-size: 0.9rem; color: var(--color-text-light, #5B6B80); margin-bottom: 20px; }
.ac-tool-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-bottom: 18px; }
.ac-tool-out {
  background: var(--color-primary-bg, #E9F2FC); border-radius: 12px; padding: 20px 22px; margin-bottom: 16px;
}
.ac-tool-out small { display: block; font-size: 0.78rem; color: var(--color-text-light, #5B6B80); margin-bottom: 6px; }
.ac-tool-out strong { font-size: 1.75rem; color: var(--color-primary-dark, #0D47A1); }
.ac-tool-out .ac-split-line { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 12px; }
.ac-tool-out .ac-split-line div { font-size: 0.85rem; color: var(--color-text, #1F2A3A); }
.ac-tool-out .ac-split-line span { color: var(--color-text-light, #5B6B80); }
.ac-warn { font-size: 0.82rem; color: #8A5A00; background: #FFF6E0; border-radius: 8px; padding: 10px 13px; }

/* ---------- 岗位墙 / 人才名片 ---------- */
.ac-job {
  background: #fff; border: 1px solid var(--color-border, #E3EAF3); border-left: 3px solid var(--color-primary, #1E88E5);
  border-radius: 11px; padding: 18px 20px; display: flex; justify-content: space-between; gap: 18px; align-items: flex-start;
}
.ac-job h4 { font-size: 1rem; color: var(--color-primary-dark, #0D47A1); margin-bottom: 6px; }
.ac-job .ac-job-meta { display: flex; flex-wrap: wrap; gap: 8px; font-size: 0.78rem; color: var(--color-text-light, #5B6B80); margin-bottom: 8px; }
.ac-job .ac-job-meta span { background: #F1F5FA; padding: 3px 9px; border-radius: 5px; }
.ac-job p { font-size: 0.86rem; color: var(--color-text-light, #5B6B80); margin: 0; }
.ac-job-side { text-align: right; flex: 0 0 auto; }
.ac-job-side .ac-pay { font-size: 1rem; color: #B45309; font-weight: 600; display: block; margin-bottom: 10px; }

.ac-person {
  background: #fff; border: 1px solid var(--color-border, #E3EAF3); border-radius: 14px; padding: 20px;
  display: flex; gap: 14px; align-items: flex-start;
}
.ac-avatar {
  width: 50px; height: 50px; border-radius: 50%; flex: 0 0 auto;
  background: linear-gradient(135deg, #1565C0, #1E88E5); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.02rem;
}
.ac-person h4 { font-size: 0.98rem; color: var(--color-primary-dark, #0D47A1); margin-bottom: 4px; }
.ac-person .ac-role { font-size: 0.79rem; color: var(--color-primary, #1E88E5); margin-bottom: 8px; }
.ac-person p { font-size: 0.84rem; color: var(--color-text-light, #5B6B80); margin: 0 0 10px; }

/* ---------- 活动 ---------- */
.ac-event {
  background: #fff; border: 1px solid var(--color-border, #E3EAF3); border-radius: 14px;
  padding: 0; overflow: hidden; display: flex;
}
.ac-event-date {
  flex: 0 0 96px; background: linear-gradient(160deg, #0D47A1, #1E88E5); color: #fff;
  display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 18px 8px;
}
.ac-event-date strong { font-size: 1.7rem; line-height: 1; }
.ac-event-date small { font-size: 0.76rem; opacity: 0.86; margin-top: 4px; }
.ac-event-body { padding: 20px 22px; flex: 1; }
.ac-event-body h3 { font-size: 1.04rem; color: var(--color-primary-dark, #0D47A1); margin-bottom: 8px; }
.ac-event-body p { font-size: 0.87rem; color: var(--color-text-light, #5B6B80); margin-bottom: 12px; }
.ac-event-body .ac-event-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 0.8rem; color: var(--color-text-light, #5B6B80); margin-bottom: 14px; }
.ac-event.closed { opacity: 0.72; }
.ac-event.closed .ac-event-date { background: linear-gradient(160deg, #55606E, #7A8798); }

/* ---------- 我的学院 ---------- */
.ac-mine-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 30px; }
.ac-mine-stat { background: #fff; border: 1px solid var(--color-border, #E3EAF3); border-radius: 14px; padding: 22px; text-align: center; }
.ac-mine-stat strong { display: block; font-size: 2rem; color: var(--color-primary, #1E88E5); line-height: 1; margin-bottom: 8px; }
.ac-mine-stat small { font-size: 0.85rem; color: var(--color-text-light, #5B6B80); }
.ac-mine-block { background: #fff; border: 1px solid var(--color-border, #E3EAF3); border-radius: 14px; padding: 24px; margin-bottom: 20px; }
.ac-mine-block h3 { font-size: 1.08rem; color: var(--color-primary-dark, #0D47A1); margin-bottom: 16px; }
.ac-empty { color: var(--color-text-light, #5B6B80); font-size: 0.9rem; padding: 18px 0; text-align: center; }
.ac-mine-list { list-style: none; margin: 0; padding: 0; }
.ac-mine-list li {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 0; border-bottom: 1px solid var(--color-border, #E3EAF3); font-size: 0.92rem;
}
.ac-mine-list li:last-child { border-bottom: 0; }
.ac-mine-list a { color: var(--color-primary, #1E88E5); text-decoration: none; }
.ac-mine-list .ac-rm { background: none; border: 0; color: var(--color-text-light, #5B6B80); cursor: pointer; font-size: 0.82rem; }
.ac-mine-list .ac-rm:hover { color: var(--color-danger, #D93025); }

/* ---------- 进度条 ---------- */
.ac-progress { height: 8px; background: #EDF2F8; border-radius: 999px; overflow: hidden; margin: 10px 0 6px; }
.ac-progress i { display: block; height: 100%; background: linear-gradient(90deg, #1E88E5, #0D47A1); border-radius: 999px; }

/* ---------- 提示条 ---------- */
.ac-notice {
  background: var(--color-primary-bg, #E9F2FC); border-radius: 12px; padding: 18px 22px;
  font-size: 0.9rem; color: var(--color-text, #1F2A3A); display: flex; gap: 12px; align-items: flex-start;
}
.ac-notice b { color: var(--color-primary-dark, #0D47A1); }
.ac-notice-y { background: #FFF6E0; }

/* ---------- 学院页脚 ---------- */
.ac-footer { background: #0B1F3A; color: rgba(255,255,255,0.78); padding: 46px 0 22px; margin-top: 20px; }
.ac-footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 30px; margin-bottom: 32px; }
.ac-footer h4 { color: #fff; font-size: 0.98rem; margin-bottom: 14px; }
.ac-footer p { font-size: 0.85rem; line-height: 1.75; margin: 0; }
.ac-footer ul { list-style: none; margin: 0; padding: 0; }
.ac-footer li { font-size: 0.85rem; padding: 4px 0; }
.ac-footer a { color: rgba(255,255,255,0.78); text-decoration: none; }
.ac-footer a:hover { color: var(--color-accent, #FFC107); }
.ac-footer-bottom { border-top: 1px solid rgba(255,255,255,0.13); padding-top: 18px; font-size: 0.8rem; }
.ac-footer-bottom a { color: rgba(255,255,255,0.8); }
.ac-disclaimer { font-size: 0.74rem; color: rgba(255,255,255,0.45); margin-top: 8px; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1100px) {
  .ac-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .ac-split { grid-template-columns: minmax(0, 1fr) 300px; gap: 22px; }
  .ac-footer-grid { grid-template-columns: 1fr 1fr; gap: 26px; }
  .ac-nav-links > a { padding: 9px 10px; font-size: 0.88rem; }
}
@media (max-width: 900px) {
  .ac-split { grid-template-columns: 1fr; }
  .ac-split-side { position: static; }
  .ac-info-bar { grid-template-columns: repeat(2, 1fr); }
  .ac-mine-grid { grid-template-columns: repeat(3, 1fr); }
  .ac-nav-links > a { padding: 9px 8px; font-size: 0.84rem; }
  .ac-brand-text small { display: none; }
}
@media (max-width: 768px) {
  .ac-sec { padding: 40px 0; }
  .ac-hero { padding: 36px 0 32px; }
  .ac-hero h1 { font-size: 1.6rem; }
  .ac-hero p { font-size: 0.92rem; }
  .ac-nav-inner { min-height: 60px; }
  .ac-nav-toggle { display: flex; }
  .ac-nav-links {
    position: fixed; top: 60px; left: 0; right: 0; z-index: 899;
    background: #fff; flex-direction: column; align-items: stretch; gap: 0;
    padding: 8px 16px 18px; border-bottom: 1px solid var(--color-border, #E3EAF3);
    box-shadow: 0 12px 26px rgba(15, 40, 80, 0.10);
    max-height: calc(100vh - 60px); overflow-y: auto;
    display: none;
  }
  .ac-nav-links.open { display: flex; }
  .ac-nav-links > a { padding: 14px 4px; border-radius: 0; border-bottom: 1px solid var(--color-border, #E3EAF3); font-size: 0.96rem; }
  .ac-nav-links > a.active { background: transparent; }
  .ac-nav-cta { margin: 14px 0 0; text-align: center; border-radius: 9px; border-bottom: 0 !important; padding: 13px 4px !important; }

  .ac-grid-2, .ac-grid-3, .ac-grid-4 { grid-template-columns: 1fr; gap: 14px; }
  .ac-tool-grid { grid-template-columns: 1fr; }
  .ac-mine-grid { grid-template-columns: 1fr; gap: 12px; }
  .ac-info-bar { grid-template-columns: 1fr 1fr; gap: 10px; }
  .ac-reader { padding: 22px 18px; }
  .ac-reader h1 { font-size: 1.32rem; }
  .ac-reader-body { font-size: 0.96rem; line-height: 1.8; }
  .ac-post, .ac-card { padding: 18px; }
  .ac-job { flex-direction: column; gap: 14px; }
  .ac-job-side { text-align: left; width: 100%; }
  .ac-job-side .ac-btn { width: 100%; }
  .ac-event { flex-direction: column; }
  .ac-event-date { flex: none; flex-direction: row; gap: 8px; padding: 12px; align-items: baseline; }
  .ac-event-date strong { font-size: 1.3rem; }
  .ac-event-date small { margin-top: 0; }
  .ac-event-body { padding: 18px; }
  .ac-footer { padding: 34px 0 18px; }
  .ac-footer-grid { grid-template-columns: 1fr; gap: 22px; }
  .ac-tool { padding: 20px 18px; }
  .ac-tool-out strong { font-size: 1.5rem; }
  .ac-side-form, .ac-mine-block { padding: 20px 18px; }
  .ac-sec-head .ac-more { float: none; display: block; margin-top: 6px; }
  .ac-brand-mark { width: 38px; height: 38px; font-size: 0.84rem; border-radius: 10px; }
  .ac-brand-text strong { font-size: 1rem; }
}
@media (max-width: 480px) {
  .ac-info-bar { grid-template-columns: 1fr; }
  .ac-tabs { gap: 6px; }
  .ac-tab { padding: 7px 12px; font-size: 0.83rem; }
  .ac-lessons th, .ac-lessons td { padding: 10px 8px; font-size: 0.86rem; }
}

/* ============================================================
   广印学院样式 v2.0（2026-09-16 v3 升级增补）
   - 承接 v1.0，全 .ac-* 命名空间，不动主站任何现有类
   - v3 新增：双层导航 / 信息流列表 / 内容卡族 / 学院专区 / 示例角标
   ============================================================ */

/* ---------- v3：独立品牌调性（深蓝底 + 近图黄，区别于主站白底蓝）---------- */
:root {
  --ac-ink: #0B1F3A;
  --ac-ink-2: #0D2B5C;
  --ac-ink-3: #16345f;
  --ac-gold: #FFC107;
  --ac-gold-d: #E8A800;
  --ac-line: #E4EAF2;
  --ac-line-d: rgba(255,255,255,.14);
  --ac-bg: #F5F8FC;
  --ac-card: #FFFFFF;
  --ac-text: #1B2A3D;
  --ac-muted: #64748B;
  --ac-blue: #1E88E5;
  --ac-blue-d: #0D47A1;
}

/* ---------- v3：顶部双层导航 ---------- */
.ac-top {
  position: sticky; top: 0; z-index: 60;
  background: var(--ac-ink);
  border-bottom: 1px solid var(--ac-line-d);
}
.ac-top-main {
  display: flex; align-items: center; gap: 18px;
  padding: 12px 0;
}
/* v3.4 修复：.ac-top-inner 此前无任何规则，品牌/搜索/按钮组走默认文档流挤成一团；
   现定义为 flex 三段式：品牌左 · 搜索中 · 按钮组靠右 */
.ac-top-inner {
  display: flex; align-items: center; gap: 18px;
  flex: 1; min-width: 0;
}
.ac-brand {
  display: flex; align-items: center; gap: 10px;
  color: #fff; text-decoration: none; flex-shrink: 0;
}
.ac-brand-mark {
  width: 38px; height: 38px; border-radius: 9px;
  background: linear-gradient(135deg, var(--ac-gold), var(--ac-gold-d));
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; color: var(--ac-ink); font-size: 1.05rem;
  letter-spacing: -0.5px;
}
.ac-brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.ac-brand-text b { font-size: 1.02rem; font-weight: 700; letter-spacing: .3px; }
.ac-brand-text span { font-size: .68rem; color: rgba(255,255,255,.6); letter-spacing: .6px; }

.ac-search {
  flex: 1; display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.09);
  border: 1px solid var(--ac-line-d);
  border-radius: 8px; padding: 8px 12px; max-width: 460px;
  transition: border-color .2s var(--ease-out, ease), background .2s var(--ease-out, ease);
}
.ac-search:focus-within { border-color: var(--ac-gold); background: rgba(255,255,255,.13); }
.ac-search input {
  flex: 1; background: transparent; border: 0; outline: 0;
  color: #fff; font-size: .86rem; font-family: inherit;
}
.ac-search input::placeholder { color: rgba(255,255,255,.42); }
.ac-search button {
  background: transparent; border: 0; cursor: pointer; padding: 0;
  color: rgba(255,255,255,.7); font-size: .95rem; line-height: 1;
}
.ac-top-act { display: flex; align-items: center; gap: 10px; flex-shrink: 0; margin-left: auto; }
.ac-top-btn {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 8px 15px; border-radius: 8px; text-decoration: none;
  font-size: .83rem; font-weight: 600; white-space: nowrap;
  border: 1px solid var(--ac-line-d); color: #fff;
  background: rgba(255,255,255,.07);
  transition: all .2s var(--ease-out, ease);
}
.ac-top-btn:hover { background: rgba(255,255,255,.15); }
.ac-top-btn.ac-top-btn-gold {
  background: var(--ac-gold); border-color: var(--ac-gold); color: var(--ac-ink);
}
.ac-top-btn.ac-top-btn-gold:hover { background: var(--ac-gold-d); border-color: var(--ac-gold-d); }

/* 下层频道横条 */
.ac-ch {
  background: var(--ac-ink-2);
  border-top: 1px solid var(--ac-line-d);
}
.ac-ch-inner { display: flex; align-items: center; gap: 2px; overflow-x: auto; }
.ac-ch-inner::-webkit-scrollbar { height: 0; }
.ac-ch a {
  display: block; padding: 11px 14px; color: rgba(255,255,255,.78);
  text-decoration: none; font-size: .85rem; white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all .2s var(--ease-out, ease);
}
.ac-ch a:hover { color: #fff; background: rgba(255,255,255,.06); }
.ac-ch a.active { color: var(--ac-gold); border-bottom-color: var(--ac-gold); font-weight: 600; }
.ac-ch-sep { flex: 1; }
/* v3.1：两组频道之间的视觉分隔（学院 5 项 ｜ 行业交互 4 项） */
.ac-ch-gap { display: block; width: 14px; flex: 0 0 14px; }
.ac-ch-group {
  display: block; width: 1px; height: 16px; flex: 0 0 1px;
  background: rgba(255,255,255,.22); margin: 0 10px;
}
.ac-ch-toggle {
  display: none; background: transparent; border: 1px solid var(--ac-line-d);
  color: #fff; border-radius: 7px; padding: 6px 11px; font-size: .9rem; cursor: pointer;
}

/* ---------- v3：Hero（双主按钮）---------- */
.ac-hero2 {
  background: linear-gradient(135deg, var(--ac-ink) 0%, var(--ac-ink-2) 52%, var(--ac-ink-3) 100%);
  color: #fff; padding: 52px 0 46px; position: relative; overflow: hidden;
}
.ac-hero2::after {
  content: ''; position: absolute; right: -120px; top: -80px;
  width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,193,7,.13) 0%, transparent 68%);
}
.ac-hero2 .container { position: relative; z-index: 2; }
.ac-hero2 h1 {
  font-size: 2.05rem; margin: 0 0 12px; letter-spacing: -.5px; line-height: 1.25;
}
.ac-hero2 h1 em { color: var(--ac-gold); font-style: normal; }
.ac-hero2 > .container > p {
  font-size: .97rem; color: rgba(255,255,255,.76); margin: 0 0 24px; max-width: 640px; line-height: 1.75;
}
.ac-hero-act { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-bottom: 22px; }
.ac-hero-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 13px 26px; border-radius: 9px; text-decoration: none;
  font-size: .93rem; font-weight: 600;
  transition: all .22s var(--ease-out, ease);
}
.ac-hero-btn-gold { background: var(--ac-gold); color: var(--ac-ink); }
.ac-hero-btn-gold:hover { background: var(--ac-gold-d); transform: translateY(-2px); }
.ac-hero-btn-ghost { border: 1px solid rgba(255,255,255,.34); color: #fff; }
.ac-hero-btn-ghost:hover { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.55); }

.ac-hero-stat { display: flex; gap: 34px; flex-wrap: wrap; padding-top: 20px; border-top: 1px solid var(--ac-line-d); }
.ac-hero-stat div { display: flex; flex-direction: column; gap: 3px; }
.ac-hero-stat b { font-size: 1.42rem; color: var(--ac-gold); font-weight: 700; line-height: 1; }
.ac-hero-stat span { font-size: .74rem; color: rgba(255,255,255,.58); letter-spacing: .4px; }

/* ---------- v3：信息流列表（58 同城式）---------- */
.ac-flow { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--ac-line); }
.ac-flow-item {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 16px 14px; border-bottom: 1px solid var(--ac-line);
  text-decoration: none; color: inherit; background: #fff;
  transition: background .18s var(--ease-out, ease);
}
.ac-flow-item:hover { background: #F8FBFF; }
.ac-flow-tag {
  flex-shrink: 0; display: inline-flex; align-items: center;
  padding: 4px 9px; border-radius: 5px; font-size: .73rem;
  font-weight: 600; letter-spacing: .2px; white-space: nowrap;
  background: #E9F2FC; color: var(--ac-blue-d);
}
.ac-flow-tag.t-entrust { background: #FFF4E0; color: #A96B00; }
.ac-flow-tag.t-buy { background: #E8F5E9; color: #2E7D32; }
.ac-flow-tag.t-sell { background: #FDECEA; color: #C62828; }
.ac-flow-tag.t-capacity { background: #E9F2FC; color: var(--ac-blue-d); }
.ac-flow-tag.t-invest { background: #F3E8FD; color: #6A1B9A; }
.ac-flow-body { flex: 1; min-width: 0; }
.ac-flow-body h3 {
  font-size: .95rem; margin: 0 0 6px; font-weight: 600; line-height: 1.5;
  color: var(--ac-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.ac-flow-item:hover .ac-flow-body h3 { color: var(--ac-blue-d); }
.ac-flow-body p {
  font-size: .8rem; color: var(--ac-muted); margin: 0; line-height: 1.6;
  overflow: hidden; text-overflow: ellipsis; display: -webkit-box;
  -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.ac-flow-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 7px; }
.ac-flow-meta span {
  font-size: .73rem; color: #8494A8; background: #F2F5F9;
  padding: 2px 7px; border-radius: 4px;
}
.ac-flow-right {
  flex-shrink: 0; text-align: right; display: flex; flex-direction: column;
  gap: 5px; align-items: flex-end; min-width: 86px;
}
.ac-flow-city { font-size: .8rem; color: var(--ac-text); font-weight: 600; }
.ac-flow-time { font-size: .72rem; color: #94A3B8; }
.ac-flow-hot {
  font-size: .68rem; color: #C62828; background: #FDECEA;
  padding: 2px 6px; border-radius: 4px; font-weight: 600;
}

/* ---------- v3：示例角标 ---------- */
.ac-demo {
  display: inline-block; font-size: .66rem; line-height: 1;
  padding: 3px 6px; border-radius: 4px; margin-left: 6px;
  background: #FEF3C7; color: #92400E; font-weight: 600;
  vertical-align: middle; letter-spacing: .3px;
}
.ac-demo-bar {
  background: #FFFBEB; border: 1px solid #FDE68A; color: #92400E;
  font-size: .8rem; padding: 10px 14px; border-radius: 8px;
  margin-bottom: 18px; line-height: 1.7;
}

/* ---------- v3：六宫格分类 ---------- */
.ac-6 {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px;
}
.ac-6 a {
  display: flex; flex-direction: column; align-items: center; gap: 9px;
  padding: 20px 10px; background: #fff; border: 1px solid var(--ac-line);
  border-radius: 11px; text-decoration: none; color: inherit;
  transition: all .22s var(--ease-out, ease);
}
.ac-6 a:hover {
  border-color: var(--ac-blue); transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(13,71,161,.1);
}
.ac-6-ico {
  width: 44px; height: 44px; border-radius: 10px;
  background: #E9F2FC; display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: var(--ac-blue-d);
}
.ac-6 a:hover .ac-6-ico { background: var(--ac-gold); color: var(--ac-ink); }
.ac-6 b { font-size: .88rem; font-weight: 600; }
.ac-6 span { font-size: .72rem; color: var(--ac-muted); }

/* ---------- v3：学院专区（深色底，双核分隔）---------- */
.ac-school {
  background: linear-gradient(135deg, var(--ac-ink) 0%, var(--ac-ink-2) 100%);
  color: #fff; border-radius: 14px; padding: 34px 30px;
  position: relative; overflow: hidden;
}
.ac-school::before {
  content: ''; position: absolute; left: -80px; bottom: -90px;
  width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,193,7,.1) 0%, transparent 70%);
}
.ac-school-inner { position: relative; z-index: 2; }
.ac-school-head { margin-bottom: 22px; }
.ac-school-head h2 { font-size: 1.34rem; margin: 0 0 8px; color: #fff; }
.ac-school-head h2 em { color: var(--ac-gold); font-style: normal; }
.ac-school-head p { font-size: .86rem; color: rgba(255,255,255,.66); margin: 0; }
.ac-school-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.ac-school-card {
  background: rgba(255,255,255,.07); border: 1px solid var(--ac-line-d);
  border-radius: 10px; padding: 18px; text-decoration: none; color: #fff;
  transition: all .22s var(--var(--ease-out, ease));
}
.ac-school-card:hover { background: rgba(255,255,255,.13); border-color: var(--ac-gold); }
.ac-school-card h3 { font-size: .96rem; margin: 0 0 8px; color: var(--ac-gold); font-weight: 600; }
.ac-school-card p { font-size: .8rem; color: rgba(255,255,255,.7); margin: 0; line-height: 1.7; }
.ac-school-card ul { margin: 10px 0 0; padding: 0; list-style: none; }
.ac-school-card li {
  font-size: .8rem; color: rgba(255,255,255,.78); padding: 5px 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.ac-school-card li:last-child { border-bottom: 0; }
.ac-school-act { margin-top: 20px; display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- v3：区域标题（带统计）---------- */
.ac-h {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 16px; margin-bottom: 18px; flex-wrap: wrap;
}
.ac-h-l h2 { font-size: 1.28rem; margin: 0 0 6px; color: var(--ac-text); }
.ac-h-l p { font-size: .84rem; color: var(--ac-muted); margin: 0; }
.ac-h-more {
  font-size: .84rem; color: var(--ac-blue-d); text-decoration: none;
  font-weight: 600; white-space: nowrap;
}
.ac-h-more:hover { color: var(--ac-blue); }

/* ---------- v3：问答卡 ---------- */
.ac-qa-list { display: flex; flex-direction: column; gap: 12px; }
.ac-qa-card {
  background: #fff; border: 1px solid var(--ac-line); border-radius: 11px;
  padding: 18px; text-decoration: none; color: inherit; display: block;
  transition: all .22s var(--ease-out, ease);
}
.ac-qa-card:hover { border-color: var(--ac-blue); box-shadow: 0 8px 22px rgba(13,71,161,.08); }
.ac-qa-top { display: flex; align-items: center; gap: 9px; margin-bottom: 10px; flex-wrap: wrap; }
.ac-qa-cat {
  font-size: .72rem; padding: 3px 8px; border-radius: 5px;
  background: #E9F2FC; color: var(--ac-blue-d); font-weight: 600;
}
.ac-qa-city { font-size: .74rem; color: #94A3B8; }
.ac-qa-q { font-size: .97rem; font-weight: 600; line-height: 1.6; margin: 0 0 9px; color: var(--ac-text); }
.ac-qa-card:hover .ac-qa-q { color: var(--ac-blue-d); }
.ac-qa-a {
  font-size: .82rem; color: var(--ac-muted); line-height: 1.7; margin: 0;
  overflow: hidden; text-overflow: ellipsis; display: -webkit-box;
  -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.ac-qa-foot {
  display: flex; gap: 16px; margin-top: 12px; padding-top: 11px;
  border-top: 1px dashed var(--ac-line); font-size: .74rem; color: #94A3B8;
  flex-wrap: wrap;
}
.ac-qa-foot b { color: var(--ac-blue-d); font-weight: 600; }

/* ---------- v3：黄页卡 ---------- */
.ac-dir-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ac-dir-card {
  background: #fff; border: 1px solid var(--ac-line); border-radius: 11px;
  padding: 18px; text-decoration: none; color: inherit;
  transition: all .22s var(--ease-out, ease); display: flex; flex-direction: column;
}
.ac-dir-card:hover { border-color: var(--ac-blue); transform: translateY(-3px); box-shadow: 0 10px 26px rgba(13,71,161,.1); }
.ac-dir-top { display: flex; align-items: center; gap: 10px; margin-bottom: 11px; }
.ac-dir-ico {
  width: 40px; height: 40px; border-radius: 9px; flex-shrink: 0;
  background: #E9F2FC; color: var(--ac-blue-d);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.05rem; font-weight: 700;
}
.ac-dir-card h3 { font-size: .92rem; margin: 0; font-weight: 600; line-height: 1.45; }
.ac-dir-card > p { font-size: .8rem; color: var(--ac-muted); margin: 0 0 11px; line-height: 1.65; flex: 1; }
.ac-dir-caps { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 11px; }
.ac-dir-caps span {
  font-size: .71rem; padding: 2px 7px; border-radius: 4px;
  background: #F2F5F9; color: #5A6B80;
}
.ac-dir-foot {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding-top: 11px; border-top: 1px solid var(--ac-line); font-size: .75rem;
}
.ac-dir-foot .c { color: #94A3B8; }
.ac-verified {
  font-size: .7rem; color: #2E7D32; background: #E8F5E9;
  padding: 2px 7px; border-radius: 4px; font-weight: 600;
}

/* ---------- v3：讲师卡 ---------- */
.ac-tc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ac-tc-card {
  background: #fff; border: 1px solid var(--ac-line); border-radius: 11px;
  padding: 20px; display: flex; flex-direction: column; gap: 12px;
}
.ac-tc-top { display: flex; align-items: center; gap: 12px; }
.ac-tc-av {
  width: 54px; height: 54px; border-radius: 14px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--ac-ink), var(--ac-blue-d));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; font-weight: 700;
  overflow: hidden;
}
/* v3.5：讲师真实头像图（有图时铺满圆形，无图回退首字） */
.ac-tc-av img {
  width: 100%; height: 100%; object-fit: cover;
  border-radius: 14px; display: block;
}
.ac-tc-top h3 { font-size: .96rem; margin: 0 0 4px; }
.ac-tc-top span { font-size: .78rem; color: var(--ac-blue-d); font-weight: 600; }
.ac-tc-card > p { font-size: .82rem; color: var(--ac-muted); line-height: 1.75; margin: 0; flex: 1; }
.ac-tc-goods { display: flex; gap: 6px; flex-wrap: wrap; }
.ac-tc-goods span {
  font-size: .71rem; padding: 3px 8px; border-radius: 4px;
  background: #E9F2FC; color: var(--ac-blue-d);
}
.ac-tc-quote {
  font-size: .82rem; color: var(--ac-ink); background: #FFFBEB;
  border-left: 3px solid var(--ac-gold); padding: 10px 13px;
  border-radius: 0 6px 6px 0; line-height: 1.7; font-style: normal;
}
.ac-tc-foot {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 11px; border-top: 1px solid var(--ac-line); font-size: .77rem;
}
.ac-tc-foot a { color: var(--ac-blue-d); text-decoration: none; font-weight: 600; }

/* ---------- v3：学员墙 ---------- */
.ac-wall { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ac-wall-card {
  background: #fff; border: 1px solid var(--ac-line); border-radius: 11px;
  padding: 20px; position: relative;
}
.ac-wall-card::before {
  content: '"'; position: absolute; right: 18px; top: 6px;
  font-size: 3.4rem; color: #E9F2FC; font-family: Georgia, serif; line-height: 1;
}
.ac-wall-card p {
  font-size: .85rem; color: var(--ac-text); line-height: 1.85;
  margin: 0 0 14px; position: relative; z-index: 2;
}
.ac-wall-who { display: flex; align-items: center; gap: 10px; }
.ac-wall-av {
  width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
  background: #E9F2FC; color: var(--ac-blue-d);
  display: flex; align-items: center; justify-content: center;
  font-size: .86rem; font-weight: 700;
}
.ac-wall-who b { font-size: .84rem; display: block; }
.ac-wall-who span { font-size: .73rem; color: var(--ac-muted); }
.ac-wall-tag {
  display: inline-block; font-size: .71rem; color: #2E7D32;
  background: #E8F5E9; padding: 2px 7px; border-radius: 4px; margin-top: 9px;
}

/* ---------- v3：学习路径图 ---------- */
.ac-path { display: flex; flex-direction: column; gap: 0; position: relative; }
.ac-path-step {
  display: flex; gap: 16px; padding: 0 0 22px; position: relative;
}
.ac-path-step:last-child { padding-bottom: 0; }
.ac-path-step::before {
  content: ''; position: absolute; left: 17px; top: 36px; bottom: 0;
  width: 2px; background: var(--ac-line);
}
.ac-path-step:last-child::before { display: none; }
.ac-path-num {
  width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
  background: #fff; border: 2px solid var(--ac-blue);
  color: var(--ac-blue-d); display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .88rem; position: relative; z-index: 2;
}
.ac-path-step.on .ac-path-num { background: var(--ac-gold); border-color: var(--ac-gold); color: var(--ac-ink); }
.ac-path-body { flex: 1; padding-top: 3px; }
.ac-path-body h3 { font-size: .93rem; margin: 0 0 6px; }
.ac-path-body p { font-size: .81rem; color: var(--ac-muted); margin: 0 0 9px; line-height: 1.7; }
.ac-path-links { display: flex; gap: 8px; flex-wrap: wrap; }
.ac-path-links a {
  font-size: .77rem; padding: 4px 10px; border-radius: 5px;
  background: #E9F2FC; color: var(--ac-blue-d); text-decoration: none; font-weight: 600;
}
.ac-path-links a:hover { background: var(--ac-gold); color: var(--ac-ink); }

/* ---------- v3：侧栏（筛选）---------- */
.ac-side-box {
  background: #fff; border: 1px solid var(--ac-line); border-radius: 11px;
  padding: 18px; margin-bottom: 16px;
}
.ac-side-box h3 {
  font-size: .92rem; margin: 0 0 13px; padding-bottom: 10px;
  border-bottom: 1px solid var(--ac-line);
}
.ac-filters { display: flex; flex-direction: column; gap: 7px; }
.ac-filters a {
  font-size: .82rem; color: #475569; text-decoration: none;
  padding: 7px 11px; border-radius: 7px;
  display: flex; justify-content: space-between; align-items: center;
  transition: all .18s var(--ease-out, ease);
}
.ac-filters a:hover { background: #F2F7FD; color: var(--ac-blue-d); }
.ac-filters a.on { background: #E9F2FC; color: var(--ac-blue-d); font-weight: 600; }
.ac-filters a b { font-size: .72rem; color: #94A3B8; font-weight: 500; }
.ac-filters a.on b { color: var(--ac-blue-d); }

/* ---------- v3：详情页 ---------- */
.ac-detail { background: #fff; border: 1px solid var(--ac-line); border-radius: 12px; padding: 28px; }
.ac-detail h1 { font-size: 1.36rem; margin: 0 0 14px; line-height: 1.5; }
.ac-detail-meta {
  display: flex; gap: 14px; flex-wrap: wrap; padding-bottom: 16px;
  margin-bottom: 20px; border-bottom: 1px solid var(--ac-line);
  font-size: .79rem; color: var(--ac-muted);
}
.ac-detail-body { font-size: .92rem; color: var(--ac-text); line-height: 1.95; }
.ac-detail-body p { margin: 0 0 14px; }
.ac-detail-body ul, .ac-detail-body ol { margin: 0 0 14px; padding-left: 22px; }
.ac-detail-body li { margin-bottom: 7px; line-height: 1.8; }
.ac-detail-body strong, .ac-detail-body b { color: var(--ac-blue-d); }

.ac-contact-box {
  background: #FFFBEB; border: 1px solid #FDE68A; border-radius: 10px;
  padding: 18px; margin: 22px 0;
}
.ac-contact-box h3 { font-size: .92rem; margin: 0 0 10px; color: #92400E; }
.ac-contact-box .v { font-size: 1.06rem; font-weight: 700; color: var(--ac-ink); }
.ac-contact-box p { font-size: .78rem; color: #A16207; margin: 8px 0 0; line-height: 1.7; }

/* ---------- v3：回答区块 ---------- */
.ac-ans {
  background: #fff; border: 1px solid var(--ac-line); border-radius: 11px;
  padding: 20px; margin-bottom: 14px;
}
.ac-ans.best { border-color: var(--ac-gold); background: #FFFDF5; }
.ac-ans-head {
  display: flex; align-items: center; gap: 10px; margin-bottom: 13px;
  padding-bottom: 11px; border-bottom: 1px solid var(--ac-line); flex-wrap: wrap;
}
.ac-ans-av {
  width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
  background: #E9F2FC; color: var(--ac-blue-d);
  display: flex; align-items: center; justify-content: center;
  font-size: .82rem; font-weight: 700;
}
.ac-ans-head b { font-size: .86rem; }
.ac-ans-role {
  font-size: .71rem; padding: 3px 8px; border-radius: 4px;
  background: #F2F5F9; color: #5A6B80; font-weight: 600;
}
.ac-ans.best .ac-ans-role { background: var(--ac-gold); color: var(--ac-ink); }
.ac-ans-body { font-size: .89rem; color: var(--ac-text); line-height: 1.95; }
.ac-ans-body p { margin: 0 0 12px; }
.ac-ans-body ul, .ac-ans-body ol { margin: 0 0 12px; padding-left: 22px; }
.ac-ans-body li { margin-bottom: 6px; line-height: 1.8; }
.ac-ans-body strong, .ac-ans-body b { color: var(--ac-blue-d); }
.ac-ans-body table { width: 100%; border-collapse: collapse; margin: 0 0 12px; font-size: .84rem; }
.ac-ans-body th, .ac-ans-body td { border: 1px solid var(--ac-line); padding: 8px 10px; text-align: left; }
.ac-ans-body th { background: #F5F8FC; font-weight: 600; }

/* ---------- v3：相关区块（知识库 ↔ 问答 ↔ 课程 三向互链）---------- */
.ac-relate { margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--ac-line); }
.ac-relate h3 { font-size: .96rem; margin: 0 0 13px; display: flex; align-items: center; gap: 8px; }
.ac-relate-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.ac-relate-item {
  display: block; padding: 12px 14px; background: #F8FAFD;
  border: 1px solid var(--ac-line); border-radius: 8px;
  text-decoration: none; color: inherit;
  transition: all .18s var(--ease-out, ease);
}
.ac-relate-item:hover { border-color: var(--ac-blue); background: #fff; }
.ac-relate-item b { font-size: .85rem; display: block; margin-bottom: 5px; line-height: 1.5; }
.ac-relate-item span { font-size: .74rem; color: var(--ac-muted); }
.ac-relate-kind {
  font-size: .68rem; padding: 2px 6px; border-radius: 4px;
  background: #E9F2FC; color: var(--ac-blue-d); margin-right: 6px;
  font-weight: 600; vertical-align: middle;
}
.ac-relate-kind.k-course { background: #FFF4E0; color: #A96B00; }
.ac-relate-kind.k-qa { background: #E8F5E9; color: #2E7D32; }
.ac-relate-kind.k-lib { background: #E9F2FC; color: var(--ac-blue-d); }

/* ---------- v3：我的（学习 + 发布 + 收藏）---------- */
.ac-mine-tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--ac-line); margin-bottom: 22px; overflow-x: auto; }
.ac-mine-tab {
  padding: 11px 18px; font-size: .88rem; font-weight: 600; color: var(--ac-muted);
  text-decoration: none; border-bottom: 2px solid transparent; margin-bottom: -2px;
  white-space: nowrap; transition: all .2s var(--ease-out, ease);
}
.ac-mine-tab:hover { color: var(--ac-blue-d); }
.ac-mine-tab.on { color: var(--ac-blue-d); border-bottom-color: var(--ac-blue); }
.ac-mine-panel { display: none; }
.ac-mine-panel.on { display: block; }
.ac-mine-item {
  display: flex; align-items: center; gap: 13px; padding: 14px;
  border: 1px solid var(--ac-line); border-radius: 9px; margin-bottom: 10px;
  background: #fff;
}
.ac-mine-item .t { flex: 1; font-size: .87rem; font-weight: 500; line-height: 1.55; }
.ac-mine-item .t span { display: block; font-size: .74rem; color: var(--ac-muted); font-weight: 400; margin-top: 4px; }
.ac-mine-del {
  background: transparent; border: 1px solid var(--ac-line); color: var(--ac-muted);
  border-radius: 6px; padding: 5px 10px; font-size: .75rem; cursor: pointer;
  transition: all .18s var(--ease-out, ease);
}
.ac-mine-del:hover { border-color: #C62828; color: #C62828; }
.ac-empty-tip { text-align: center; padding: 42px 20px; color: var(--ac-muted); font-size: .86rem; }
.ac-empty-tip .ico { font-size: 2.2rem; display: block; margin-bottom: 12px; opacity: .4; }

/* ---------- v3：发布区（我要发布 / 我要提问）---------- */
.ac-publish {
  background: #fff; border: 1px solid var(--ac-line); border-radius: 12px;
  padding: 24px;
}
.ac-publish h2 { font-size: 1.12rem; margin: 0 0 8px; }
.ac-publish > p { font-size: .84rem; color: var(--ac-muted); margin: 0 0 18px; line-height: 1.7; }
.ac-radio-row { display: flex; gap: 9px; flex-wrap: wrap; margin-bottom: 16px; }
.ac-radio {
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
  padding: 8px 14px; border: 1px solid var(--ac-line); border-radius: 8px;
  font-size: .83rem; transition: all .18s var(--ease-out, ease);
}
.ac-radio:hover { border-color: var(--ac-blue); }
.ac-radio input { accent-color: var(--ac-blue-d); }
.ac-radio.on { border-color: var(--ac-blue); background: #F2F7FD; font-weight: 600; }

/* ---------- v3：发布流程说明 ---------- */
.ac-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ac-step {
  background: #fff; border: 1px solid var(--ac-line); border-radius: 11px; padding: 20px;
  position: relative;
}
.ac-step-n {
  width: 30px; height: 30px; border-radius: 8px; background: var(--ac-ink);
  color: var(--ac-gold); display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .85rem; margin-bottom: 12px;
}
.ac-step h3 { font-size: .93rem; margin: 0 0 8px; }
.ac-step p { font-size: .81rem; color: var(--ac-muted); margin: 0; line-height: 1.7; }

/* ---------- v3：响应式 ---------- */
@media (max-width: 1100px) {
  .ac-dir-grid, .ac-tc-grid, .ac-wall { grid-template-columns: repeat(2, 1fr); }
  .ac-6 { grid-template-columns: repeat(3, 1fr); }
  .ac-school-grid { grid-template-columns: repeat(2, 1fr); }
  .ac-steps { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  .ac-search { max-width: 300px; }
  .ac-hero2 h1 { font-size: 1.72rem; }
  .ac-hero-stat { gap: 22px; }
  .ac-ch-toggle { display: block; }
  .ac-ch-inner { display: none; flex-direction: column; align-items: stretch; padding-bottom: 10px; }
  .ac-ch-inner.open { display: flex; }
  .ac-ch a { border-bottom: 1px solid var(--ac-line-d); border-left: 2px solid transparent; }
  .ac-ch a.active { border-bottom-color: var(--ac-line-d); border-left-color: var(--ac-gold); }
  .ac-ch-sep { display: none; }
  .ac-ch-gap { display: none; }
  .ac-ch-group { display: none; }
  .ac-relate-grid, .ac-school-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .ac-top-main { padding: 10px 0; }
  .ac-top-inner { flex-wrap: wrap; gap: 11px; }
  .ac-search { order: 3; width: 100%; max-width: none; }
  .ac-top-btn { padding: 7px 12px; font-size: .79rem; }
  .ac-hero2 { padding: 34px 0 30px; }
  .ac-hero2 h1 { font-size: 1.48rem; }
  .ac-hero2 > .container > p { font-size: .87rem; }
  .ac-hero-btn { padding: 11px 18px; font-size: .87rem; flex: 1; justify-content: center; }
  .ac-hero-stat { gap: 18px; }
  .ac-hero-stat b { font-size: 1.2rem; }
  .ac-6 { grid-template-columns: repeat(2, 1fr); }
  .ac-dir-grid, .ac-tc-grid, .ac-wall { grid-template-columns: 1fr; }
  .ac-flow-item { padding: 14px 10px; gap: 10px; }
  .ac-flow-body h3 { font-size: .89rem; white-space: normal; }
  .ac-flow-right { min-width: 62px; }
  .ac-flow-tag { font-size: .69rem; padding: 3px 7px; }
  .ac-school { padding: 24px 18px; border-radius: 11px; }
  .ac-school-head h2 { font-size: 1.15rem; }
  .ac-detail { padding: 20px 16px; }
  .ac-detail h1 { font-size: 1.14rem; }
  .ac-ans { padding: 16px 14px; }
  .ac-relate-grid { grid-template-columns: 1fr; }
  .ac-steps { grid-template-columns: 1fr; }
  .ac-h-l h2 { font-size: 1.12rem; }
}
@media (max-width: 480px) {
  .ac-brand-text span { display: none; }
  .ac-brand-mark { width: 34px; height: 34px; font-size: .95rem; }
  .ac-hero2 h1 { font-size: 1.32rem; }
  .ac-hero-act { flex-direction: column; align-items: stretch; }
  .ac-6 { gap: 9px; }
  .ac-6 a { padding: 15px 8px; }
  .ac-6-ico { width: 38px; height: 38px; font-size: 1.05rem; }
  .ac-6 b { font-size: .82rem; }
}

/* ============================================================
   v3.1：黄色收敛（李总 2026-09-16 确认）
   原则：色板不变（深蓝 #0B1F3A + 近图黄 #FFC107），只降「侵袭感」——
        大面积填充 → 描边 + 小面积填充；黄仍是强调色，但不再整片铺开。
   仅覆盖 .ac-* 命名空间，主站零影响。
   ============================================================ */

/* 大面积实心黄按钮 → 描边式（保留 hover 实心，交互反馈不变） */
.ac-btn-gold {
  background: transparent;
  border: 1.5px solid var(--ac-gold);
  color: var(--ac-gold);
}
.ac-btn-gold:hover {
  background: var(--ac-gold);
  border-color: var(--ac-gold);
  color: var(--ac-ink);
}
/* 深色区（深蓝底）上的黄按钮：黄字描边，避免整片黄在深底上过跳 */
.ac-dual-dark .ac-btn-gold,
.ac-cta .ac-btn-gold,
.ac-school .ac-btn-gold {
  background: transparent;
  border-color: var(--ac-gold);
  color: var(--ac-gold);
}
.ac-dual-dark .ac-btn-gold:hover,
.ac-cta .ac-btn-gold:hover,
.ac-school .ac-btn-gold:hover {
  background: var(--ac-gold);
  color: var(--ac-ink);
}
/* Hero 主按钮同理：描边 + 轻底，保留黄色品牌识别 */
.ac-hero-btn-gold {
  background: rgba(255,193,7,.14);
  border: 1.5px solid var(--ac-gold);
  color: var(--ac-gold);
}
.ac-hero-btn-gold:hover { background: var(--ac-gold); color: var(--ac-ink); }

/* 顶栏「我要发布」小按钮：小面积填充保留（尺寸小，不构成侵袭） */
.ac-top-btn.ac-top-btn-gold { background: var(--ac-gold); color: var(--ac-ink); }

/* 六宫格悬停：由整块黄底改为图标小面积黄 */
.ac-6 a:hover .ac-6-ico { background: var(--ac-gold); color: var(--ac-ink); }

/* ============================================================
   v3.1 补齐：双核联动带（academy-bridge.js 注入，此前 CSS 缺失 →
   元素无样式裸显）。类名以 JS 实际输出为准：
   .ac-bridge / -head / -grid / -item / -act
   ============================================================ */
.ac-bridge {
  background: linear-gradient(135deg, var(--ac-ink), var(--ac-ink-2));
  border-radius: 14px;
  padding: 26px 28px;
  margin: 30px 0;
  color: #fff;
}
.ac-bridge-head { margin-bottom: 18px; }
.ac-bridge-head h3 {
  font-size: 1.16rem; font-weight: 700; color: #fff; margin: 0 0 6px;
}
.ac-bridge-head p { color: rgba(255,255,255,.72); font-size: .88rem; margin: 0; }
.ac-bridge-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
}
.ac-bridge-item {
  background: rgba(255,255,255,.07);
  border: 1px solid var(--ac-line-d);
  border-radius: 10px;
  padding: 14px 16px;
  text-decoration: none;
  display: block;
  transition: all .2s var(--ease-out, ease);
}
.ac-bridge-item:hover {
  background: rgba(255,255,255,.13);
  border-color: rgba(255,193,7,.5);
  transform: translateY(-2px);
}
.ac-bridge-item strong {
  display: block; color: var(--ac-gold); font-size: .93rem; margin-bottom: 4px;
}
.ac-bridge-item span {
  display: block; color: rgba(255,255,255,.66); font-size: .8rem; line-height: 1.6;
}
.ac-bridge-act { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }

@media (max-width: 1024px) {
  .ac-bridge-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .ac-bridge { padding: 20px 16px; }
  .ac-bridge-grid { grid-template-columns: 1fr; }
  .ac-bridge-act .ac-btn { flex: 1; justify-content: center; }
}

/* ============================================================
   v3.3 实景配图（2026-09-16）：hero 背景 / 课程封面图 / 详情大图 / 实景三图带
   图片文件 images/academy-*.jpg（1200x800 q84 progressive），引用统一 ?v=1
   ============================================================ */

/* -- hero 带实景背景（inline 双层：深色渐变遮罩 + 图；此处只管铺满定位） -- */
.ac-hero[style*="background-image"],
.ac-hero2[style*="background-image"] {
  background-size: cover;
  background-position: center 38%;
  background-repeat: no-repeat;
}
/* v3.5：遮罩透明度降低后，用文字阴影保证浅遮罩上的白字可读 */
.ac-hero[style*="background-image"] h1,
.ac-hero2[style*="background-image"] h1,
.ac-hero[style*="background-image"] p,
.ac-hero2[style*="background-image"] p,
.ac-hero[style*="background-image"] .ac-crumb,
.ac-hero2[style*="background-image"] .ac-crumb {
  text-shadow: 0 1px 4px rgba(0,0,0,.55), 0 0 18px rgba(0,0,0,.35);
}

/* -- 课程卡封面：真实图片 + 遮罩 + 大字浮层（渐变底色类保留作加载兜底） -- */
.ac-course-cover { position: relative; overflow: hidden; }
.ac-course-cover img {
  position: absolute; left: 0; top: 0; width: 100%; height: 100%;
  object-fit: cover; z-index: 0;
}
.ac-course-cover .ac-cover-veil {
  position: absolute; left: 0; top: 0; right: 0; bottom: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(10,22,44,.14) 0%, rgba(10,22,44,.60) 100%);
}
.ac-course-cover .ac-cover-txt {
  position: relative; z-index: 2;
  text-shadow: 0 1px 10px rgba(0,0,0,.5);
}

/* -- 课程详情页头图 -- */
.ac-course-heroimg {
  margin: 0 0 20px; border-radius: 14px; overflow: hidden;
  box-shadow: 0 10px 30px rgba(13,42,84,.14);
  background: #0B1F3A;
}
.ac-course-heroimg img {
  display: block; width: 100%;
  aspect-ratio: 21 / 9; object-fit: cover;
}

/* -- 首页实景三图带 -- */
.ac-imgband { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ac-imgcard {
  display: block; text-decoration: none; border-radius: 14px; overflow: hidden;
  background: #fff; box-shadow: 0 6px 22px rgba(13,42,84,.10);
  transition: transform .22s var(--ease-out, ease), box-shadow .22s var(--ease-out, ease);
}
.ac-imgcard:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(13,42,84,.16); }
.ac-imgcard img {
  display: block; width: 100%;
  aspect-ratio: 16 / 9; object-fit: cover;
}
.ac-imgcard figcaption {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  padding: 12px 16px;
}
.ac-imgcard figcaption strong { font-size: .92rem; color: var(--ac-ink, #10233F); }
.ac-imgcard figcaption span { font-size: .8rem; color: var(--ac-gold-d, #E8A800); white-space: nowrap; }

@media (max-width: 768px) {
  .ac-imgband { grid-template-columns: 1fr; }
  .ac-imgcard img { aspect-ratio: 16 / 9; }
  .ac-course-heroimg img { aspect-ratio: 16 / 9; }
  .ac-hero[style*="background-image"],
  .ac-hero2[style*="background-image"] { background-position: center center; }
}