/* 得到复刻站 - 移动优先基础样式
   主色 #FF6B00 (dedao primary)，PC/移动适配 */
:root{
  --primary:#FF6B00;
  --primary-2:#FF8933;
  --primary-soft:#FFF1E5;
  --link:#007AFF;
  --bg:#f7f7f7;
  --card:#fff;
  --line:#ececec;
  --line-2:#f0f0f0;
  --text:#222;
  --text-2:#666;
  --text-3:#999;
  --ok:#1D9E75;
  --new:#E24B4A;
  --danger:#A32D2D;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;font-size:15px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* 顶栏 */
.topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.topbar-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;gap:12px;padding:8px 14px}
.brand{font-size:22px;font-weight:700;color:var(--primary);letter-spacing:-.5px;flex:0 0 auto}
.topbar-search{flex:1 1 auto}
.topbar-search form{display:flex;margin:0}
.topbar-search input{width:100%;border:1px solid var(--line);background:#f5f5f5;border-radius:20px;padding:7px 16px;font-size:14px;outline:none}
.topbar-search input:focus{border-color:var(--primary);background:#fff}
.topbar-user{flex:0 0 auto;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);position:relative}
.user-avatar{width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-weight:600;font-size:14px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:0;line-height:1;transition:.15s;letter-spacing:0}
.user-avatar:hover{transform:scale(1.05)}
.user-menu{position:absolute;top:calc(100% + 8px);right:0;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.1);min-width:170px;padding:6px 0;z-index:60;overflow:hidden}
.user-menu[hidden]{display:none}
.user-menu-name{padding:10px 14px;font-size:13px;color:var(--text-2);border-bottom:1px solid var(--line-2);font-weight:500;word-break:break-all}
.user-menu-item{display:flex;align-items:center;gap:8px;padding:10px 14px;color:var(--text);font-size:13px;cursor:pointer;transition:.15s}
.user-menu-item:hover{background:var(--primary-soft);color:var(--primary)}
.user-menu-item svg{flex:0 0 auto;color:currentColor}

/* 容器 */
.page{max-width:1100px;margin:0 auto;padding:0 14px 36px;min-height:70vh}

/* flash */
.flash-box{margin:12px 0}
.flash{border-radius:8px;padding:10px 14px;font-size:13px;margin-bottom:6px}
.flash-error{background:#FCEBEB;color:#A32D2D}
.flash-success{background:#EAF3DE;color:#3B6D11}

/* 工具按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:none;cursor:pointer;
  border-radius:6px;font-size:14px;padding:9px 18px;font-weight:500;transition:.15s;line-height:1.2}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:#e85f00}
.btn-ghost{background:#fff;color:var(--text);border:1px solid var(--line)}
.btn-sm{padding:6px 12px;font-size:13px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-spin i{display:inline-block;width:12px;height:12px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* 首页 actions(已不在顶部) */
.status-line{font-size:12px;color:var(--text-3);padding:6px 0;min-height:24px}

/* 课程卡片网格 */
.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-top:8px}
@media(max-width:640px){.course-grid{grid-template-columns:repeat(2,1fr);gap:12px}}
.course-card{background:var(--card);border-radius:8px;overflow:hidden;border:1px solid var(--line);transition:.15s;position:relative}
.course-card:hover{box-shadow:0 6px 16px rgba(0,0,0,.06);transform:translateY(-1px)}
.course-cover{position:relative;aspect-ratio:3/4;background:#eee;overflow:hidden}
.course-cover img{width:100%;height:100%;object-fit:cover}
/* 角标放在 cover 左上/右上,角标不互相覆盖 */
.badge-wrap{position:absolute;top:6px;right:6px;left:6px;display:flex;flex-direction:column;align-items:flex-end;gap:4px;z-index:2;pointer-events:none}
.badge{display:inline-flex;align-items:center;font-size:11px;color:#fff;padding:2px 7px;border-radius:3px;font-weight:600;line-height:1.4}
.badge-new{background:var(--new)}
.badge-update{background:var(--primary)}
.badge-finished{display:inline-block;font-size:10px;padding:1px 6px;border-radius:3px;color:#fff;background:rgba(0,0,0,.55);align-self:flex-end}
.course-info{padding:8px 10px 10px}
.course-name{font-size:14px;font-weight:600;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:38px}
.course-sub{font-size:12px;color:var(--text-3);margin-top:4px;display:flex;justify-content:space-between}
.lecturer{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* group-title 横向(标题 + 右侧按钮) */
.group-title{font-size:16px;font-weight:700;margin:14px 0 10px;display:flex;align-items:center;gap:8px}
.group-title .cnt{font-size:12px;color:var(--text-3);font-weight:400}
.group-title-row{justify-content:space-between;margin-top:12px}
.group-title-row .t{display:flex;align-items:center;gap:8px}

/* 空状态 */
.empty{padding:60px 20px;text-align:center;color:var(--text-3)}
.empty .big{font-size:40px;margin-bottom:8px}

/* 课程详情页 - 新版 hero */
/* 课程详情头部: 主图(左) + 文本&按钮(右), 上下对齐不溢出 */
.course-hero{background:#fff;border-radius:12px;padding:18px;margin:16px 0;display:flex;gap:22px;border:1px solid var(--line)}
.course-hero-cover{flex:0 0 150px;border-radius:8px;overflow:hidden;background:#eee;position:relative}
.course-hero-cover img{width:150px;height:200px;display:block;object-fit:cover}
.hero-fin{position:absolute;top:8px;left:8px;bottom:auto;right:auto;background:rgba(0,0,0,.5)}
.course-hero-main{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:center}
.course-hero-title{font-size:21px;margin:0 0 8px;line-height:1.3;font-weight:700;color:#111}
.course-hero-lecturer{font-size:14px;color:var(--text-2);line-height:1.4}
.course-hero-lecturer b{color:#333;font-weight:600;margin-right:4px}
.course-hero-lecturer .lecturer-title{color:var(--text-3)}
.course-hero-intro{font-size:13px;color:var(--text-2);margin-top:6px;line-height:1.6;white-space:pre-wrap}
.course-hero-stats{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-top:8px}
.course-hero-stats b{color:var(--text);font-weight:700;font-size:15px;margin-right:2px}
.course-hero-stats .dot-sep{width:3px;height:3px;border-radius:50%;background:var(--line);display:inline-block}
.course-hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
@media(max-width:640px){
  .course-hero{flex-direction:row;padding:14px;gap:16px;align-items:flex-start}
  .course-hero-cover{flex:0 0 96px}
  .course-hero-cover img{width:96px;height:128px}
  .course-hero-main{flex:1}
}

/* 课程亮点(复刻官方: 每个编号项前有橙色圆底数字序号123) */
.course-light{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 18px;margin:14px 0}
.cl-head{font-size:15px;font-weight:700;color:#111;margin-bottom:10px;padding-left:10px;border-left:3px solid var(--primary);line-height:1.2}
.highlight-list{display:block}
/* 每项前一个橙色小圆点(用户要圆点, 不要数字编号) */
.hl-item{position:relative;font-size:14px;color:#444;line-height:1.75;margin:0 0 12px;padding-left:20px}
.hl-item:last-child{margin-bottom:0}
.hl-item::before{content:"";position:absolute;left:2px;top:9px;width:8px;height:8px;border-radius:50%;background:var(--primary)}

/* 课程介绍(已并入头部 .course-hero-intro, 此样式保留以便兼容历史模板) */
.course-intro{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 18px;margin:14px 0}
.ci-head{font-size:15px;font-weight:700;color:#111;margin-bottom:8px;padding-left:10px;border-left:3px solid var(--primary);line-height:1.2}
.course-intro p{margin:0;font-size:14px;color:#444;line-height:1.7;white-space:pre-wrap}

/* 目录头(标题+右侧手动更新居中对齐) */
.dir-head{display:flex;align-items:center;justify-content:space-between;margin:22px 0 10px}

/* 按模块分组的目录 */
.chapter-group{background:#fff;border:1px solid var(--line);border-radius:10px;margin:10px 0;overflow:hidden}
.chapter-group>summary{list-style:none;display:flex;align-items:center;justify-content:space-between;padding:14px 16px;cursor:pointer;font-weight:600;font-size:15px;color:#111;user-select:none}
.chapter-group>summary::-webkit-details-marker{display:none}
.chapter-group>summary::before{content:"▸";color:var(--primary);margin-right:8px;transition:transform .2s}
.chapter-group[open]>summary::before{transform:rotate(90deg)}
.cg-name{flex:1}
.cg-cnt{font-size:12px;color:var(--text-3);font-weight:400}
.chapter-items .article-item{padding-left:42px}

.article-list{background:#fff;border-radius:10px;border:1px solid var(--line);overflow:hidden}
.article-item{display:flex;align-items:center;gap:12px;padding:13px 16px;border-bottom:1px solid var(--line)}
.article-item:last-child{border-bottom:none}
.article-item:hover{background:#fafafa}
.article-item .atitle{flex:1;font-size:15px;line-height:1.4}
.article-item .st{font-size:12px;color:var(--text-3);flex:0 0 auto}
/* 已读文章: 标题置灰(浏览器 localStorage 记录) */
.article-item.is-read .atitle{color:#b0b0b0;font-weight:400}
.article-item.is-read .st{opacity:.6}
.article-item.is-read .new-tag{opacity:.5}
.new-tag{color:var(--new);margin-left:6px;font-size:11px;border:1px solid var(--new);border-radius:3px;padding:0 4px}

/* 删除/恢复按钮 + 已删除横幅 */
.btn-danger{background:#fff;color:#A32D2D;border:1px solid #E2B5B5}
.btn-danger:hover{background:#FCEBEB;border-color:#A32D2D}
.deleted-banner{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#FFF7E6;border:1px solid #F2D08A;color:#7A5B17;padding:10px 14px;border-radius:8px;margin:16px 0;font-size:14px}
.deleted-banner .btn{flex:0 0 auto}

.deleted-section{margin-top:30px;padding:14px 18px;background:#fafafa;border:1px solid var(--line);border-radius:8px}
.deleted-section summary{cursor:pointer;font-size:14px;color:var(--text-2);user-select:none}
.deleted-section summary:hover{color:var(--primary)}
.deleted-list{list-style:none;margin:12px 0 0;padding:0}
.deleted-list li{display:flex;justify-content:space-between;align-items:center;padding:6px 0;font-size:13px;border-bottom:1px dashed #eee}
.deleted-list li:last-child{border-bottom:none}
.deleted-list li a{color:var(--text-2);text-decoration:none}
.deleted-list li a:hover{color:var(--primary);text-decoration:underline}
.deleted-list .del-time{color:var(--text-3);font-size:12px}

/* 首页底部容量条(顶部不再显示) */
/* 首页底部容量提示条(简化版) */
.storage-strip{
  margin:30px 0 0;
  padding:10px 0;
  text-align:center;
  font-size:12px;
  color:var(--text-2);
  border-top:1px solid var(--line);
}
.storage-strip .dot{
  display:inline-block;
  width:6px;height:6px;
  border-radius:50%;
  background:#1D9E75;
  margin-right:6px;
  vertical-align:middle;
}
.storage-strip[data-level="warn"] .dot{background:#E0A300}
.storage-strip[data-level="over"] .dot{background:#FF6B00}
.storage-strip[data-level="critical"] .dot{background:#A32D2D}
.storage-block[data-level="over"],.storage-block[data-level="critical"]{border-color:#E8B98A}

/* 文章详情页 */
.article-wrap{max-width:820px;margin:0 auto}
.article-head{background:#fff;border-radius:10px;padding:22px;margin:16px 0 0;border:1px solid var(--line)}
.article-head .course-crumb{font-size:12px;color:var(--text-3);margin-bottom:10px}
.article-head .course-crumb a{color:var(--text-3)}
.article-head .course-crumb a:hover{color:var(--primary)}
.article-head h1{font-size:24px;margin:0 0 10px;line-height:1.35;font-weight:700;color:#111}
.art-meta{font-size:12px;color:var(--text-3);display:flex;gap:14px;align-items:center;flex-wrap:wrap}

/* 正文 */
.article-body{background:#fff;border-radius:10px;padding:24px 22px 12px;margin:0 0 4px;border:1px solid var(--line);
  font-size:16px;line-height:1.85;color:#2a2a2a;letter-spacing:.01em}
.article-body p{margin:0 0 14px}
.article-body h1,.article-body h2,.article-body h3,.article-body h4{margin:22px 0 12px;line-height:1.4;color:#111;font-weight:700}
.article-body h2{font-size:19px}
.article-body h3{font-size:17px}
.article-body figure{margin:18px 0;text-align:center}
.article-body img{max-width:100%;border-radius:6px;display:inline-block}
.article-body figcaption{font-size:12px;color:var(--text-3);margin-top:6px}
.article-body blockquote{margin:18px 0;padding:10px 16px;background:#f6f6f6;border-left:3px solid var(--primary-2);color:#555;border-radius:0 6px 6px 0}
.article-body blockquote.quoted-gray{background:#f4f4f4;border-left-color:#bbb;color:#777;font-style:italic}
.article-body hr{border:none;border-top:1px solid var(--line);margin:22px 0}
.article-body .salutation{color:var(--text-3);font-size:14px}
.article-body .hl{background:linear-gradient(transparent, #ffe1c7 0);}
.article-body .center-text{text-align:center;color:var(--text-2);margin:14px 0}
.article-body strong{font-weight:700;color:#111}
.article-body em{font-style:italic;color:var(--text-2)}

/* 音频卡片(官方橙色主题: 左圆播放钮 + 右侧标题/进度条/时长/朗读者) */
.audio-card{display:flex;flex-direction:column;gap:9px;background:linear-gradient(135deg,#FFF8F0 0%,#FFEFE0 100%);border:1px solid #FFDCC0;border-radius:12px;padding:14px 16px;margin:18px 0;color:#8a5a24;transition:.2s;position:relative}
.audio-card:hover{box-shadow:0 4px 14px rgba(255,107,0,.10)}
.audio-head{display:flex;align-items:center;gap:14px;min-width:0}
.audio-play-btn{flex:0 0 46px;width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:.2s;padding:0;box-shadow:0 2px 6px rgba(255,107,0,.28)}
.audio-play-btn:hover{background:#e85f00;transform:scale(1.06)}
.audio-play-btn.is-playing{background:#E84B00}
.audio-play-btn svg{margin-left:2px}
.audio-title{flex:1;min-width:0;font-size:15px;font-weight:600;color:#5a3a1a;line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.audio-progress-row{display:flex;align-items:center;gap:10px;width:100%}
.audio-now,.audio-total{font-size:11px;color:#b07c45;font-variant-numeric:tabular-nums;flex:0 0 auto;min-width:36px}
.audio-total{text-align:right;color:#c89a68}
.audio-now{min-width:0;flex:0 0 auto}
/* 进度条 */
.audio-progress{flex:1;position:relative;height:22px;display:flex;align-items:center;cursor:pointer;touch-action:none}
.ap-track{width:100%;height:4px;border-radius:2px;background:rgba(255,122,10,.18);position:relative;overflow:visible}
.ap-fill{position:absolute;left:0;top:0;height:100%;width:0%;border-radius:2px;background:linear-gradient(90deg,#FF6B00,#FF8A33);transition:width .1s linear}
.ap-knob{position:absolute;top:50%;width:14px;height:14px;margin:-7px 0 0 -7px;border-radius:50%;background:#fff;border:2px solid var(--primary);box-shadow:0 1px 3px rgba(0,0,0,.18);opacity:0;transition:opacity .15s;pointer-events:none}
.audio-progress.dragging .ap-knob{opacity:1}
.audio-progress:hover .ap-knob{opacity:1}
.audio-sub{display:flex;align-items:center;gap:10px;font-size:12px;color:#b07c45;min-height:0}
.audio-sub:empty{display:none}
.audio-duration{font-variant-numeric:tabular-nums}
.audio-reader{color:#b07c45}
/* 倍速按钮(简洁, 契合得到主题) */
.audio-rate-btn{flex:0 0 auto;font-size:12px;font-weight:600;color:var(--primary);background:#fff;border:1px solid #FFD3A6;border-radius:14px;padding:3px 9px;cursor:pointer;transition:.15s;font-variant-numeric:tabular-nums;line-height:1.4}
.audio-rate-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.audio-card audio{display:none}
.audio-card.is-playing{background:linear-gradient(135deg,#FFEFE0 0%,#FFE2C8 100%)}

.content-tip{background:#FFF7E8;border:1px solid #FFE3B3;color:#8a5a00;border-radius:8px;padding:12px 14px;margin:16px 0;font-size:14px}

.article-author{background:#fff;border-radius:10px;padding:18px;margin-bottom:16px;border:1px solid var(--line);display:flex;gap:14px;align-items:center}
.article-author img{width:52px;height:52px;border-radius:50%}
.article-author .nm{font-weight:600;font-size:15px}
.article-author .ti{font-size:13px;color:var(--text-2)}

/* 文章底部时间/来源 */
.art-foot{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--text-3);padding:6px 2px 10px;border-bottom:1px solid var(--line-2);margin-bottom:16px}

/* 官方"划重点"模块 */
.elite-module{background:#F7F8FA;border-left:3px solid var(--primary);border-radius:0 8px 8px 0;padding:16px 18px;margin:20px 0}
.elite-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:10px;display:flex;align-items:center;gap:6px}
.elite-title::before{content:"";width:4px;height:14px;background:var(--primary);border-radius:2px;display:inline-block}
.elite-content{margin:0;padding:0;list-style:none}
.elite-content li{font-size:15px;line-height:1.7;color:#444;padding:4px 0 4px 22px;position:relative}
.elite-content li::before{content:"";position:absolute;left:2px;top:12px;width:8px;height:8px;border-radius:50%;background:var(--primary)}

/* 评论区 */
.comment-section{background:#fff;border-radius:10px;padding:18px;margin-bottom:16px;border:1px solid var(--line)}
.comment-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.comment-head h3{margin:0;font-size:16px;display:flex;align-items:center;gap:6px}
.comment-head .cm-count{font-size:13px;color:var(--text-3);font-weight:400}
.comment-update{margin-left:auto}
.comment-list{list-style:none;margin:0;padding:0}
.comment-item{padding:14px 0;border-bottom:1px solid var(--line)}
.comment-item:last-child{border-bottom:none}
.cm-main{display:flex;gap:12px}
.cm-av img{width:38px;height:38px;border-radius:50%;background:#eee}
.cm-body{flex:1;min-width:0}
.cm-top{display:flex;align-items:baseline;gap:8px}
.cm-nick{font-weight:600;font-size:14px;color:#333}
.cm-elite{margin-left:4px;color:#fff;background:var(--primary);font-size:10px;padding:0 4px;border-radius:3px}
.cm-text{margin:6px 0;font-size:14px;line-height:1.7;color:#333;word-break:break-word}
.cm-replyto{color:var(--link);font-size:13px}
.ddi-wrap{display:inline-flex;align-items:center;gap:0}
.ddi-wrap .ddi,.cm-bottom .ddi{display:inline-block}
.cm-bottom{display:flex;gap:14px;font-size:12px;color:var(--text-3);align-items:center}
.cm-bottom span,.cm-bottom a{display:inline-flex;align-items:center;gap:4px}
.cm-bottom .ddi,.cm-bottom svg{opacity:.7;color:var(--text-3);display:inline-block;flex:0 0 auto}
.cm-bottom a:hover .ddi{opacity:1;color:var(--primary)}
.cm-like{color:var(--text-3);cursor:default}
.cm-replies-link{cursor:pointer;color:var(--text-3);transition:.15s}
.cm-replies-link:hover{color:var(--primary)}
.cm-replies-link:hover .ddi{opacity:1;color:var(--primary)}
.cm-reply-teaser{margin:8px 0 0 50px;background:#FAF7F2;border-left:3px solid var(--primary);border-radius:4px;padding:8px 12px;font-size:13px;line-height:1.6;color:#555;word-break:break-word}
.cm-reply-teaser .rn{color:var(--primary);font-weight:500}
.cm-reply-teaser .teaser-more{display:inline-flex;align-items:center;gap:4px;margin-top:6px;color:var(--primary);font-size:12px}
.cm-replies-tip{margin:8px 0 0 50px;font-size:12px;color:var(--text-3)}
.cm-replies-tip .cm-replies-link{margin-left:8px}
/* 楼中楼: 在原留言下展开的子回复列表 */
.cm-replies-toggle{border:none;background:none;cursor:pointer;font-size:12px;color:var(--text-3);padding:0;align-items:center;gap:4px}
.cm-replies-toggle:hover{color:var(--primary)}
.cm-arrow{display:inline-block;transition:transform .18s;font-size:10px}
.cm-replies-toggle[aria-expanded="true"] .cm-arrow{transform:rotate(180deg)}
.cm-replies-toggle[aria-expanded="true"]{color:var(--primary)}
.cm-replies-inline{margin:10px 0 0 0;background:#FBF8F4;border-radius:8px;padding:6px 10px}
.cm-sub-list{list-style:none;margin:0;padding:0}
.cm-sub-item{display:flex;gap:10px;padding:9px 0;border-bottom:1px dashed #efe7dc}
.cm-sub-item:last-child{border-bottom:none}
.cm-av.sm{flex:0 0 auto}
.cm-av.sm img{width:26px;height:26px}
.cm-sub-body{flex:1;min-width:0}
.cm-sub-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.cm-sub-meta .rn{font-size:12px;color:var(--primary);font-weight:500}
.cm-sub-meta .ts{font-size:11px;color:var(--text-3)}
.cm-sub-text{font-size:13px;line-height:1.65;color:#444;margin-top:3px;word-break:break-word}
.cm-sub-empty{font-size:12px;color:var(--text-3);padding:10px 4px}

/* 搜索页 */
.search-box{margin:18px 0}
.search-input{display:flex;border:2px solid var(--primary);border-radius:24px;overflow:hidden;background:#fff}
.search-input input{flex:1;border:none;padding:11px 18px;font-size:15px;outline:none}
.search-input button{background:var(--primary);color:#fff;border:none;padding:0 22px;font-size:14px;font-size:15px}
.s-row{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px;margin-bottom:10px}
.s-row .cov-wrap{position:relative;flex:0 0 auto;width:48px;height:64px}
.s-row .cov-placeholder{position:absolute;inset:0;width:48px;height:64px;border-radius:4px;background:linear-gradient(135deg,#FFE9D6,#FFDDB8);color:var(--primary-2);font-size:11px;display:flex;align-items:center;justify-content:center}
.s-row img.cov{position:absolute;inset:0;width:48px;height:64px;object-fit:cover;border-radius:4px;background:#eee}
.s-row .info{flex:1;min-width:0}
.s-row .t{font-size:15px;font-weight:600;line-height:1.35}
.s-row .t mark,.s-row .d mark{background:rgba(255,107,0,.18);color:var(--primary);padding:0 2px;border-radius:2px}
.s-row .d{font-size:12px;color:var(--text-3);margin-top:3px}
.s-row .sub{font-size:12px;color:var(--text-3)}
.s-row .ops{flex:0 0 auto}
@media(max-width:640px){.s-row .ops .btn{font-size:12px;padding:6px 10px}}

/* 官方课程内容(正文全文)命中卡片 */
.s-row-content{align-items:center}
.s-row-content .sum{font-size:13px;color:var(--text-2);line-height:1.55;margin-top:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.s-row-content .sum mark,.s-row-content .t mark{background:rgba(255,107,0,.18);color:var(--primary);padding:0 2px;border-radius:2px}
.s-row-content .trial-tag{display:inline-block;vertical-align:1px;margin-left:6px;font-size:10px;line-height:1;font-weight:600;color:var(--primary);border:1px solid var(--primary);border-radius:3px;padding:2px 4px}

/* 登录页 */
.login-page{max-width:360px;margin:60px auto;background:#fff;border:1px solid var(--line);border-radius:12px;padding:30px 26px}
.login-page h1{font-size:20px;color:var(--primary);margin:0 0 4px}
.login-page .sub{color:var(--text-3);font-size:13px;margin-bottom:20px}
.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px}
.form-row input{width:100%;border:1px solid var(--line);border-radius:8px;padding:11px 12px;font-size:15px;outline:none;background:#fafafa}
.form-row input:focus{border-color:var(--primary);background:#fff}
.login-page .btn{width:100%;padding:12px}
.err{background:#FCEBEB;color:#A32D2D;padding:8px 12px;border-radius:6px;font-size:13px;margin-bottom:12px}

/* 留言详情页(参考官方 /knowledge/note/detail) */
.note-detail-wrap{max-width:820px;margin:0 auto}
.note-crumb{font-size:12px;color:var(--text-3);margin:16px 0 8px}
.note-crumb a{color:var(--text-2)}
.note-crumb a:hover{color:var(--primary);text-decoration:underline}
.note-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 20px;margin-bottom:16px}
.note-card-head{display:flex;gap:12px;align-items:center}
.note-card-head .cm-av img{width:42px;height:42px;border-radius:50%;background:#eee}
.note-head-nick{font-weight:600;font-size:15px;color:#222}
.note-head-meta{font-size:12px;color:var(--text-3);margin-top:3px}
.note-card-body{margin:14px 0;font-size:15px;line-height:1.85;color:#2a2a2a;white-space:pre-wrap;word-break:break-word}
.note-card-actions{display:flex;gap:24px;font-size:13px;color:var(--text-3);padding-top:12px;border-top:1px solid var(--line-2);margin-top:8px}
.note-card-actions span{display:inline-flex;align-items:center;gap:6px;cursor:default}
.note-replies{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 20px}
.note-replies h3{margin:0 0 12px;font-size:15px}
.note-replies .cnt{color:var(--text-3);font-size:12px;font-weight:400}
.note-replies-list{list-style:none;margin:0;padding:0}
.note-reply-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed #eee}
.note-reply-item:last-child{border-bottom:none}
.note-reply-item .cm-av.sm img{width:32px;height:32px;border-radius:50%}
.nr-body{flex:1;min-width:0}
.nr-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}
.nr-meta .rn{font-weight:600;color:#333}
.nr-meta .ts{color:var(--text-3);font-size:12px}
.nr-text{margin-top:5px;font-size:14px;line-height:1.7;color:#333;word-break:break-word}

@media(min-width:700px){
  .page{padding-top:8px}
  .article-body{font-size:17px;line-height:1.9}
}
/* toast */
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(20px);background:rgba(0,0,0,.82);color:#fff;padding:10px 18px;border-radius:20px;font-size:14px;opacity:0;transition:.25s;pointer-events:none;z-index:200;max-width:86vw;text-align:center}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* 删除/分享弹窗 */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:9000;display:flex;align-items:center;justify-content:center;padding:20px;touch-action:none;-webkit-overflow-scrolling:auto}
.modal-mask[hidden]{display:none}
.modal{background:#fff;border-radius:10px;padding:22px;max-width:380px;width:100%;box-shadow:0 10px 30px rgba(0,0,0,.18);position:relative;z-index:2}
.modal h3{margin:0 0 10px;font-size:17px}
.modal-desc{color:var(--text-2);font-size:13px;line-height:1.7;margin:0 0 16px;white-space:pre-wrap}
.modal-actions{display:flex;gap:10px;justify-content:flex-end}
/* 分享图片弹窗 */
.modal-share{max-width:520px}
.share-tip{font-size:12px;color:var(--text-3);background:#FFF7E5;border:1px solid #FFE3B3;border-radius:6px;padding:8px 12px;margin-bottom:12px}
.share-preview{display:flex;justify-content:center;background:#fafafa;border-radius:8px;padding:14px;min-height:240px;align-items:center;touch-action:auto}
.share-preview img{max-width:100%;max-height:70vh;height:auto;border-radius:6px;box-shadow:0 4px 14px rgba(0,0,0,.1);cursor:zoom-in}
.share-preview .empty-hint{color:var(--text-3);font-size:13px;text-align:center}
.share-preview canvas{max-width:100%;height:auto;border-radius:6px;box-shadow:0 4px 14px rgba(0,0,0,.1)}
.share-preview img{user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;pointer-events:auto}
#share-open {display:inline-flex;align-items:center;gap:6px}
#share-open[hidden]{display:none}

/* 全屏放大图片层(用于微信内/移动端查看大图, 避免 blob URL 失效) */
#share-img-zoom{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:1100;display:flex;align-items:center;justify-content:center;padding:20px;animation:zoomFade .18s ease}
#share-img-zoom[hidden]{display:none}
#share-img-zoom img{max-width:96vw;max-height:88vh;object-fit:contain;border-radius:6px;box-shadow:0 8px 30px rgba(0,0,0,.5);user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}
#share-img-zoom .zoom-close{position:absolute;top:16px;right:18px;background:rgba(0,0,0,.5);color:#fff;border:none;border-radius:50%;width:36px;height:36px;font-size:24px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}
@keyframes zoomFade{from{opacity:0}to{opacity:1}}
#share-download{display:inline-flex;align-items:center;gap:6px}
#share-download[hidden]{display:none}
/* 弹窗内全屏放大层 */
#share-img-zoom{position:absolute;inset:0;background:rgba(0,0,0,.88);border-radius:10px;display:flex;align-items:center;justify-content:center;z-index:3;padding:20px}
#share-img-zoom[hidden]{display:none}
#share-img-zoom img{max-width:100%;max-height:100%;object-fit:contain;cursor:zoom-out}
#share-img-zoom .zoom-close{position:absolute;top:8px;right:10px;background:rgba(0,0,0,.4);border:none;color:#fff;width:30px;height:30px;border-radius:50%;font-size:22px;line-height:26px;cursor:pointer}

/* 选中文本操作菜单 */
.sel-menu{position:fixed;z-index:400;display:flex;background:#2b2b2b;border-radius:8px;padding:4px;box-shadow:0 4px 16px rgba(0,0,0,.25);transform:translateX(0);user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}
.sel-menu[hidden]{display:none}
.sel-menu button{background:transparent;border:none;color:#fff;font-size:13px;padding:8px 12px;border-radius:6px;cursor:pointer;white-space:nowrap}
.sel-menu button:hover{background:rgba(255,255,255,.18)}
.sel-menu button + button{margin-left:2px}
/* 移动端下拉刷新指示 */
.pull-ind{position:fixed;top:0;left:50%;transform:translate(-50%,-80px);z-index:500;background:#fff;border:1px solid var(--line);border-radius:20px;padding:6px 14px;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);box-shadow:0 2px 8px rgba(0,0,0,.1);transition:transform .2s;pointer-events:none;opacity:0}
.pull-ind.show{opacity:1}
.pull-spin{width:14px;height:14px;border:2px solid var(--line-2);border-top-color:var(--primary);border-radius:50%;display:inline-block;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}