/* 课程区样式 —— 沿用 style.css 的设计令牌，不引入新配色。
 * 顶部站点导航的样式在 style.css 里（两个页面都要用）。 */

/* ---------------------------------------------------------------- 目录页 */

.course-list{margin:36px 0 0}
.list-heading{display:flex;align-items:baseline;gap:18px;margin-bottom:18px}
.list-heading h2{font-size:14px}
.list-heading>span{font-size:11px;color:#979f8e}
.units{display:grid;gap:18px}
.unit-empty{padding:40px 0;color:#a0a796;font-size:12px}

.unit{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px 26px}
.unit-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:6px}
.unit-num{font-family:Georgia,serif;font-size:13px;color:#a9b39c;padding-top:3px;min-width:22px}
.unit-title{font-size:16px;font-weight:600;margin:0;letter-spacing:.4px}
.unit-tagline{font-size:12px;color:#8b9480;line-height:1.8;margin:8px 0 0 36px;max-width:62ch}
.unit-count{font-size:10px;color:#a2aa98;margin-left:auto;white-space:nowrap;padding-top:5px}

.lessons{list-style:none;margin:18px 0 0 36px;padding:0;border-top:1px solid var(--line)}
.lesson-row{display:flex;align-items:center;gap:14px;padding:13px 0;border-bottom:1px solid var(--line)}
.lesson-row:last-child{border-bottom:0}
.lesson-row a{flex:1;min-width:0;display:block}
.lesson-row strong{display:block;font-size:13px;font-weight:500;letter-spacing:.3px}
.lesson-row span{display:block;font-size:11px;color:#949c8b;margin-top:5px;line-height:1.6}
.lesson-row .lesson-min{font-size:10px;color:#a8b09d;white-space:nowrap;font-variant-numeric:tabular-nums}
.lesson-row:hover strong{color:var(--green)}
.lesson-arrow{color:#b3bca7;font-size:12px;transition:transform .15s}
.lesson-row:hover .lesson-arrow{transform:translateX(3px);color:#7d9a6c}

/* 分档：需要会员的课照样列出来，只加一个标记 ——
   目录要让人看见"还有什么"，看不见就没人想付费 */
.lesson-row.is-locked strong{color:#8b9480}
.lesson-row .lesson-lock{display:inline-block;margin-top:0;font-size:10px;color:#8a6d3b;background:#fbf3e2;border:1px solid #eadcbd;border-radius:4px;padding:2px 6px;white-space:nowrap}

@media(max-width:650px){
  .unit{padding:20px 18px}
  .unit-num{display:none}
  .unit-tagline{margin-left:0}
  .lessons{margin-left:0}
  .lesson-row span{display:none}
}

/* -------------------------------------------- 四板块目录 + 引言区（09-19） */

/* 引言区。.intro 的骨架（两列）在 style.css 里，这里只补内容层 ——
   不加 !important，靠选择器权重压过 style.css 里的 `.intro p`（margin:0）。 */
.intro-main{max-width:62ch}
.intro h1 em{font-style:normal;color:#6e8266}
.intro .intro-lead{line-height:2;margin:0 0 10px;max-width:58ch}
.intro .intro-lead:last-child{margin-bottom:0}
.intro .intro-lead strong{color:#596653;font-weight:600}

/* 三条「怎么用」+ 一个落点 */
.intro-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:26px 0 0}
.intro-points .point{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.intro-points .point strong{display:block;font-size:13px;font-weight:600;letter-spacing:.4px;color:#4c5a47}
.intro-points .point p{font-size:11px;color:#8b9480;line-height:1.9;margin:8px 0 0}
.intro-cta{grid-column:1/-1;margin:4px 0 0}
.intro-cta a{font-size:12px;color:var(--green);font-weight:600;border-bottom:1px solid #c4d3b5;padding-bottom:3px}

/* 板块：目录的第一层。板块之间留大间距，板块内的单元是小卡片。 */
.units{display:grid;gap:32px}
.group{border-top:2px solid #e3e7da;padding-top:22px}
.group-head{display:flex;align-items:baseline;gap:14px}
.group-num{font-family:Georgia,serif;font-size:12px;color:#b6bfa8;min-width:22px;letter-spacing:1px}
.group-title{font-family:"Songti SC","SimSun",serif;font-size:19px;font-weight:600;margin:0;letter-spacing:1.5px}
.group-count{font-size:10px;color:#a2aa98;margin-left:auto;white-space:nowrap;font-variant-numeric:tabular-nums}
.group-tagline{font-size:12px;color:#8b9480;line-height:1.9;margin:9px 0 0 36px;max-width:62ch}
.group-units{display:grid;gap:16px;margin-top:18px}

@media(max-width:880px){
  .intro-points{grid-template-columns:1fr}
  .intro-main{max-width:none}
  .intro .intro-lead{max-width:none}
}
@media(max-width:650px){
  .group-tagline{margin-left:0}
  .group-num{display:none}
}

/* ------------------------------------------------------------ 拆书预留板块 */

.slot{margin-top:26px;padding:26px 28px;border-style:dashed;border-color:#cbd6bf;background:#fafbf5}
.slot-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.slot-head h2{font-size:17px;letter-spacing:.5px}
.slot-tag{font-size:10px;color:#6d7f5d;background:#eaf0e0;border:1px solid #d3ddc5;border-radius:4px;padding:3px 8px;letter-spacing:.5px}
.slot-head p{flex-basis:100%;font-size:12px;color:#8b9480;line-height:1.8;margin:9px 0 0}
.slot-body{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:30px;margin-top:24px}
.slot-flow{display:grid;gap:16px}
.flow-step{display:grid;grid-template-columns:26px 1fr;gap:12px;align-items:start}
.flow-num{width:24px;height:24px;border-radius:50%;background:#e8eede;color:#5f7350;font-size:11px;display:grid;place-items:center;font-family:Georgia,serif}
.flow-step strong{font-size:13px;font-weight:600;display:block}
.flow-step p{font-size:11px;color:#8b9480;line-height:1.85;margin:6px 0 0}
.slot-side{display:flex;flex-direction:column;gap:14px}
.slot-note{font-size:11px;color:#8b9480;line-height:1.9;margin:0;padding:12px 14px;background:#f3f6ec;border-radius:8px}
.slot-redline{font-size:10px;color:#9aa38d;line-height:1.9;margin:0}
.slot-cta{font-size:12px;color:var(--green);font-weight:600;border-bottom:1px solid #c4d3b5;padding-bottom:3px;align-self:flex-start}
.slot-pending{margin-top:24px;padding-top:18px;border-top:1px dashed #d3ddc5;display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.slot-pending span{font-size:11px;color:#7d8a6d;font-weight:600}
.slot-pending small{font-size:10px;color:#a5ad99}

@media(max-width:880px){.slot-body{grid-template-columns:1fr;gap:22px}}

/* -------------------------------------------------------------- 单课阅读页 */

.lesson-nav{display:flex;align-items:center;gap:18px;padding:28px 0 0}
.lesson-crumb{font-size:11px;color:#98a189}

.lesson{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:46px 56px 40px;margin:20px 0 30px;max-width:820px;margin-left:auto;margin-right:auto}
.lesson-head{border-bottom:1px solid var(--line);padding-bottom:26px;margin-bottom:32px}
.lesson-unit{font-size:11px;color:#8fa07d;letter-spacing:2px}
.lesson-head h1{font-family:"Songti SC","SimSun",serif;font-size:30px;font-weight:500;letter-spacing:1px;line-height:1.5;margin:14px 0 12px}
.lesson-summary{font-size:14px;color:#6f7a68;line-height:1.95;margin:0}
.lesson-meta{font-size:10px;color:#a4ac97;margin-top:16px;letter-spacing:.5px}

.lesson-body{font-size:15px;line-height:2.15;color:#3a463b}
.lesson-body p{margin:0 0 22px;letter-spacing:.2px}
.lesson-body h{display:block}
.lesson-body .h{font-family:"Songti SC","SimSun",serif;font-size:19px;font-weight:600;color:#2c3f33;letter-spacing:1px;margin:42px 0 18px;padding-left:13px;border-left:3px solid #a8bf94}
.lesson-body .h:first-child{margin-top:0}

/* 例子/范文块：课程里最要紧的东西 —— 先讲道理，再给一段真文字 */
.lesson-body .ex{background:#f3f6ee;border-left:3px solid #b6c9a4;border-radius:0 8px 8px 0;padding:16px 20px;margin:0 0 22px;font-size:14px;line-height:2.1;color:#41503f;font-family:"Songti SC","SimSun",serif}
.lesson-body .ex::before{content:"例";display:block;font-family:"Microsoft YaHei",sans-serif;font-size:9px;color:#8fa07d;letter-spacing:2px;margin-bottom:8px}
.lesson-body .ex p{margin:0 0 10px}
.lesson-body .ex p:last-child{margin-bottom:0}

/* 提醒块：红线与常见坑 */
.lesson-body .note{background:#fdf6ec;border:1px solid #ecdcbe;border-radius:8px;padding:14px 18px;margin:0 0 22px;font-size:13px;line-height:2;color:#7d6533}
.lesson-body .note::before{content:"注意";display:block;font-size:9px;color:#b08b40;letter-spacing:2px;margin-bottom:7px}

.lesson-body .list{margin:0 0 22px;padding-left:0;list-style:none}
.lesson-body .list li{position:relative;padding-left:20px;margin-bottom:11px;line-height:1.95}
.lesson-body .list li::before{content:"";position:absolute;left:5px;top:13px;width:5px;height:5px;border-radius:50%;background:#a8bf94}

/* 表格：Markdown 表格在讲义里用得少，这里给课程内嵌的指标表兜底 */
.lesson-body table{width:100%;border-collapse:collapse;font-size:13px;margin:0 0 24px}
.lesson-body th,.lesson-body td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left;line-height:1.85}
.lesson-body th{color:#6f7c63;font-weight:600;font-size:12px;background:#f6f8f1}

.lesson-foot{margin-top:40px;padding-top:22px;border-top:1px solid var(--line);display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.lesson-tags{display:flex;gap:8px;flex-wrap:wrap}
.lesson-tags span{font-size:10px;color:#7f8f6d;background:#f0f3e8;border-radius:4px;padding:4px 9px}
.lesson-pager{margin-left:auto;display:flex;gap:22px}
.lesson-pager a{font-size:12px;color:#7b8573;max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lesson-pager a:hover{color:var(--green)}

@media(max-width:880px){.lesson{padding:32px 26px 28px}.lesson-head h1{font-size:24px}}
@media(max-width:650px){.lesson{padding:26px 20px}.lesson-body{font-size:14px;line-height:2.05}.lesson-pager{margin-left:0;flex-basis:100%}}

/* 课程正文的加载/错误状态 */
.course-status{padding:56px 0;text-align:center;color:#a0a796;font-size:12px}
.course-error{padding:40px 0;text-align:center;color:#9b6146;font-size:12px;line-height:1.9}

/* lesson 页失败时上面几处留白一并收干净 */
#lesson-title:empty,#lesson-summary:empty,#lesson-unit:empty,#lesson-meta:empty{display:none}
#lesson-summary:empty,#lesson-meta:empty{margin:0}
#lesson-crumb:empty{display:none}

/* 「学完你会什么」—— 结果导向那一行，挂在摘要下面 */
.lesson-outcome{font-size:13px;color:#5f7350;line-height:1.9;margin:14px 0 0;padding-left:14px;border-left:3px solid #c4d3b5}
#lesson-outcome:empty{display:none;margin:0}

/* 会员内容：正文位置放解锁说明。
   注意这里**不是**把正文模糊掉 —— 服务端压根没发正文过来。 */
.lesson-locked{margin:10px 0;padding:26px 28px;background:#fafbf5;border:1px dashed #cbd6bf;border-radius:12px}
.lesson-locked strong{display:block;font-size:14px;font-weight:600;color:#5f7350;margin-bottom:10px}
.lesson-locked p{font-size:13px;color:#7d8a6d;line-height:1.95;margin:0 0 10px}
.lesson-locked-hint{font-size:11px;color:#9aa38d;margin:0}

/* 备案号：悬挂 ICP 备案号是法规要求（并需链接到工信部），别删。 */
.beian{display:inline-block;margin-left:14px;font-size:11px;color:#98a189}
.beian a{color:#98a189;text-decoration:none;border-bottom:1px solid #d9ddd0}
.beian a:hover{color:#6e8266}