:root { --green:#14352b; --green-lt:#2e5e4e; --orange:#d97b3f; --orange-dk:#c05a2e;
  --paper:#f2efe7; --cream:#efece1; --line:#e6e0d0; --gray:#6a6a6a; --ink:#1c2620; }
.abody { padding-top: 30px; }
.abody p { font-size: 16px; line-height: 2.05; color: #3a3a3a; margin: 0 0 20px; }
.abody h3 { position: relative; font-size: 20px; color: var(--green); margin: 44px 0 18px; letter-spacing: 1px; display: flex; align-items: center; gap: 12px; padding-bottom: 13px; border-bottom: 1px solid var(--line); }
.abody h3 .no { flex: none; min-width: 30px; height: 30px; padding: 0 9px; border-radius: 9px; background: linear-gradient(135deg, var(--orange), var(--orange-dk)); color: #fff; font-size: 14.5px; font-weight: 900; display: inline-flex; align-items: center; justify-content: center; letter-spacing: 1px; box-shadow: 0 3px 10px rgba(192,90,46,.30); }
.abody h3::after { content: ''; position: absolute; left: 0; bottom: -2px; width: 58px; height: 3px; border-radius: 2px; background: var(--orange); }
.abody .seo-faq h3.sf-q { padding-bottom: 0; border-bottom: none; }
.abody .seo-faq h3.sf-q::after { content: none; }
.abody blockquote { background: var(--paper); border-left: 4px solid var(--orange); border-radius: 0 6px 6px 0; padding: 20px 24px; margin: 0 0 22px; }
.abody blockquote p { font-size: 15.5px; color: var(--green); margin: 0; font-weight: bold; line-height: 1.9; }
.abody blockquote .src { display: block; font-size: 12px; color: #a8a396; font-weight: normal; margin-top: 8px; letter-spacing: 1px; }
.abody .note { background: #fdf6ec; border: 1px dashed #ecd9bd; border-radius: 6px; padding: 18px 22px; margin: 0 0 22px; font-size: 14px; line-height: 1.95; color: #7a6a52; }
.abody .note b { color: var(--orange-dk); }
.abody figure { margin: 26px 0; }
.abody figure img { width: 100%; border-radius: 6px; }
.abody figcaption { text-align: center; font-size: 12px; color: #a8a396; margin-top: 10px; letter-spacing: 1px; }
.img-row { display: flex; flex-direction: column; gap: 14px; margin: 26px 0; }
.img-row figure { flex: 1; min-width: 0; margin: 0; }
.img-row figure img { width: 100%; height: auto; border-radius: 6px; display: block; }
.img-row figure figcaption { font-size: 12px; color: #a8a396; margin-top: 8px; text-align: center; letter-spacing: 1px; }
/* ---- 知识图解插画（学生友好 · 描边风格） ---- */
  .abody .knotfig { background:#fdfcf8; border:1px solid #f0ead9; border-radius:12px; padding:18px 16px 10px; box-shadow:0 4px 14px rgba(31,63,53,.06); }
.abody .knotfig svg { width:100%; height:auto; display:block; }
.abody .knotfig svg path, .abody .knotfig svg circle, .abody .knotfig svg rect, .abody .knotfig svg line, .abody .knotfig svg polyline, .abody .knotfig svg ellipse, .abody .knotfig svg polygon { fill:none; stroke:#24483c; stroke-width:5; stroke-linecap:round; stroke-linejoin:round; }
.abody .knotfig svg .fill { fill:#e9efe7; stroke:#24483c; stroke-width:5; }
.abody .knotfig svg .soft { fill:#f4ede0; stroke:#24483c; stroke-width:4; }
.abody .knotfig svg .end { stroke:#d97b3f; stroke-width:7; }
.abody .knotfig svg .rail { stroke:#b3ab90; stroke-width:3.5; }
.abody .knotfig svg .thin { stroke-width:2.5; }
.abody .knotfig svg text { font-family:'PingFang SC','Microsoft YaHei',sans-serif; font-size:14px; fill:#5f5a4e; }
.abody .knotfig svg text.lab { fill:#b95f2b; font-weight:bold; }
.abody .knotfig svg text.ttl { fill:#14352b; font-weight:900; font-size:15px; }
.abody .knotfig svg text.ok { fill:#2a6e4f; font-weight:bold; }
.abody .knotfig svg text.bad { fill:#c0392b; font-weight:bold; }
/* 轨迹下载卡 */
  .abody .track-box { display: none; margin: 0 0 26px; background: linear-gradient(135deg, #14352b, #245546); border-radius: 14px; padding: 22px 26px; color: #fff; box-shadow: 0 12px 30px rgba(20,53,43,.20); }
.abody .track-box.show { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.abody .track-box .tl b { display: block; font-size: 16.5px; letter-spacing: 1px; margin-bottom: 6px; }
.abody .track-box .tl span { font-size: 12.5px; opacity: .78; line-height: 1.8; }
.abody .track-box a.tbtn { flex: none; display: inline-flex; align-items: center; gap: 8px; background: var(--orange); color: #fff; text-decoration: none; font-size: 14.5px; font-weight: bold; letter-spacing: 1px; padding: 12px 26px; border-radius: 999px; transition: filter .2s; }
.abody .track-box a.tbtn:hover { filter: brightness(1.08); }
/* 线路速览 · 大数字统计卡 */
  .abody .stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 26px 0 24px; }
.abody .stat-grid .st { background: linear-gradient(180deg, #f6f9f5, #edf3ee); border: 1px solid #dfe9e2; border-radius: 12px; padding: 16px 10px 14px; text-align: center; }
.abody .stat-grid .st .k { display: block; font-size: 11.5px; letter-spacing: 2px; color: var(--orange-dk); font-weight: bold; margin-bottom: 7px; }
.abody .stat-grid .st .v { font-size: clamp(21px, 2.6vw, 26px); font-weight: 900; color: var(--green); line-height: 1.2; }
.abody .stat-grid .st .v em { font-style: normal; font-size: 12.5px; color: var(--green-lt); margin-left: 3px; letter-spacing: 1px; }
.abody .stat-grid .st .n { display: block; font-size: 11.5px; color: #96a29a; margin-top: 6px; letter-spacing: .5px; }
/* 进阶环线 · 高亮速览条 */
  .abody .hl-band { display: flex; align-items: center; gap: 6px 16px; flex-wrap: wrap; background: linear-gradient(135deg, #14352b, #245546); border-radius: 12px; padding: 15px 22px; margin: 0 0 26px; box-shadow: 0 8px 22px rgba(20,53,43,.16); }
.abody .hl-band .hk { flex: none; font-size: 12px; letter-spacing: 3px; color: #ffb27d; font-weight: bold; }
.abody .hl-band .hv { font-size: 13.5px; letter-spacing: .5px; color: #dce8e1; line-height: 1.8; }
.abody .hl-band .hv b { color: #fff; font-size: 15px; }
/* 到达与出发卡（导航/停车/洗手间）—— 标准模块，样式定稿见技能 assets/nav-card.css */
  .abody .nav-card { background: #f3f8f4; border: 1px solid #dfe9e2; border-radius: 12px; padding: 18px 22px; color: #2c463a; margin: 0 0 26px; }
.abody .nav-card .nc-title { font-size: 16px; font-weight: bold; letter-spacing: 2px; margin-bottom: 12px; color: #14352b; }
.abody .nav-card .nc-row { font-size: 13.5px; line-height: 2.0; color: #2c463a; display: flex; gap: 4px 18px; flex-wrap: wrap; align-items: flex-start; }
.abody .nav-card .nc-row b { flex: none; letter-spacing: .5px; color: #14352b; }
.abody .nav-card .nc-btns { display: inline-flex; flex-wrap: wrap; gap: 8px; vertical-align: middle; }
.abody .nav-card .nc-btns a, .abody .nav-card .nc-btns button { display: inline-flex; align-items: center; background: var(--orange); color: #fff; text-decoration: none; font-size: 13px; font-weight: bold; letter-spacing: 1px; padding: 7px 16px; border-radius: 999px; border: none; cursor: pointer; transition: filter .2s; }
.abody .nav-card .nc-btns a:hover, .abody .nav-card .nc-btns button:hover { filter: brightness(1.08); }
.abody .nav-card .nc-btns button.nc-copy { background: rgba(20,53,43,.10); color: #14352b; }
/* 文章尾部 SEO / GEO 模块（事实卡 + 家长常问 + 同类线路）—— 标准模块，样式定稿见技能 assets/seo-tail.css */
  .abody .seo-block { margin: 40px 0 0; }
.abody .seo-block .sb-title { font-size: 17px; color: var(--green); font-weight: bold; letter-spacing: 1px; margin: 0 0 14px; padding-left: 12px; border-left: 4px solid var(--orange); }
.abody .seo-facts { background: #f3f8f4; border: 1px solid #dfe9e2; border-radius: 12px; padding: 20px 22px; }
.abody .seo-facts .sb-title { margin-bottom: 12px; border-left-color: var(--green-lt); }
.abody .seo-facts .sf-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 8px 22px; }
.abody .seo-facts .sf-grid div { font-size: 13.5px; line-height: 1.9; color: #2c463a; }
.abody .seo-facts .sf-grid b { color: #14352b; margin-right: 6px; }
.abody .seo-faq { margin-top: 34px; }
.abody .seo-faq .sf-item { padding: 14px 0; border-bottom: 1px dashed #e6e1d6; }
.abody .seo-faq .sf-item:last-child { border-bottom: none; }
.abody .seo-faq h3.sf-q { display: block; font-size: 15.5px; color: var(--green); letter-spacing: .5px; margin: 0 0 6px; font-weight: bold; }
.abody .seo-faq h3.sf-q::before { content: 'Q'; color: var(--orange); font-weight: 900; margin-right: 8px; }
.abody .seo-faq .sf-a { font-size: 15px; line-height: 1.95; color: #3a3a3a; margin: 0; }
.abody .seo-faq .sf-a::before { content: 'A'; color: var(--green-lt); font-weight: 900; margin-right: 10px; }
.abody .seo-rel { margin-top: 34px; }
.abody .seo-rel .sr-list { display: grid; gap: 10px; }
.abody .seo-rel a.sr-item { display: block; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; text-decoration: none; transition: border-color .2s, box-shadow .2s; }
.abody .seo-rel a.sr-item:hover { border-color: var(--orange); box-shadow: 0 6px 18px rgba(31,63,53,.10); }
.abody .seo-rel .sr-t { font-size: 15px; font-weight: bold; color: var(--green); display: block; margin-bottom: 4px; }
.abody .seo-rel .sr-d { font-size: 12.5px; color: #a8a396; letter-spacing: .5px; }
.abody ul { list-style: none; margin: 0 0 20px; padding: 0; }
.abody ul li { position: relative; font-size: 15.5px; line-height: 2; color: #3a3a3a; padding-left: 21px; margin: 0 0 5px; }
.abody ul li::before { content: ''; position: absolute; left: 2px; top: .92em; width: 8px; height: 8px; border-radius: 3px; background: var(--orange); opacity: .9; }
.abody .task { background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: 24px 26px; margin: 30px 0; }
.abody .task .tt { font-size: 15px; font-weight: 900; color: var(--orange-dk); letter-spacing: 2px; margin-bottom: 8px; }
.abody .task p { font-size: 14.5px; margin-bottom: 8px; }
.abody .task .hash { font-size: 13px; color: var(--green-lt); font-weight: bold; }
.abody .hook { background: var(--green); color: #d8e5de; border-radius: 8px; padding: 20px 24px; font-size: 14px; line-height: 1.9; margin: 30px 0; }
.abody .hook b { color: #ffb27d; }
.abody table { width: 100%; border-collapse: separate; border-spacing: 0; margin: 26px 0; border: 1px solid #dfe4d9; border-radius: 12px; overflow: hidden; box-shadow: 0 6px 22px rgba(31,63,53,.07); }
.abody th { font-size: 13.5px; letter-spacing: 3px; color: #fff; background: linear-gradient(135deg, #14352b, #2a5c4b); padding: 12px 16px; text-align: center; font-weight: bold; }
.abody tr:last-child td { border-bottom: none; }
.abody td { font-size: 14.5px; padding: 13px 18px; border-bottom: 1px solid #edf0e9; color: #3a3a3a; vertical-align: top; background: #fff; }
.abody tr:nth-child(even) td { background: #fbfaf5; }
.abody td:first-child { font-weight: bold; color: var(--green); background: #f2f5ef; border-right: 1px dashed #dde3d6; white-space: nowrap; letter-spacing: 1px; }
.abody td b.x { color: #c0392b; }
.abody td small { display: block; color: #999; font-size: 12.5px; margin-top: 2px; }
.abody .cta-band { background: var(--paper); border: 1px solid var(--line); border-radius: 8px; text-align: center; padding: 28px 22px; margin: 34px 0 6px; }
.abody .cta-band .bt { font-size: 16px; font-weight: 900; color: var(--green); letter-spacing: 2px; }
.abody .cta-band .bs { font-size: 13px; color: var(--gray); margin: 6px 0 16px; }
.abody .kmeta { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 0 0 20px; }
.abody .kmeta div { background: #fbfaf5; border: 1px solid var(--line); border-radius: 8px; padding: 12px 15px; font-size: 13.5px; line-height: 1.85; color: #3a3a3a; }
.abody .kmeta b { display: block; font-size: 12px; letter-spacing: 2px; color: var(--orange-dk); margin-bottom: 4px; }
.abody .knav { display: flex; justify-content: space-between; gap: 12px; margin: 34px 0 0; padding-top: 20px; border-top: 1px dashed #dfe4d9; }
.abody .knav a { font-size: 14px; color: var(--green); font-weight: bold; letter-spacing: 1px; text-decoration: none; border-bottom: 1px solid var(--green-lt); padding-bottom: 2px; }
.abody .knav a:hover { color: var(--orange-dk); border-color: var(--orange); }
.abody .klist { list-style: none; padding: 0; margin: 0 0 24px; }
.abody .klist li { font-size: 15px; line-height: 2; border-bottom: 1px dashed #e8ece3; padding: 7px 0; }
.abody .klist a { color: var(--green); font-weight: bold; text-decoration: none; border-bottom: 1px solid var(--green-lt); }
.abody .klist a:hover { color: var(--orange-dk); }
.abody .klist span { color: #a8a396; font-size: 13.5px; }
/* ---- 绳结技能：分步图解 ---- */
  .abody .ksteps { display:grid; grid-template-columns:repeat(2,1fr); gap:16px 14px; margin:8px 0 20px; }
.abody .kstep { position:relative; background:#fff; border:1px solid #e8ece3; border-radius:12px; padding:10px 10px 12px; box-shadow:0 4px 14px rgba(31,63,53,.06); }
.abody .kstep img { width:100%; height:auto; display:block; background:#fdfcf8; border:1px solid #f0ead9; border-radius:8px; aspect-ratio:4/3; object-fit:cover; }
.abody .kstep .kno { position:absolute; top:16px; left:16px; z-index:2; min-width:26px; height:26px; padding:0 7px; border-radius:13px; background:var(--orange); color:#fff; font-size:13px; font-weight:900; display:flex; align-items:center; justify-content:center; box-shadow:0 3px 9px rgba(0,0,0,.18); }
.abody .kstep .kt { font-size:14px; font-weight:900; color:var(--green); margin-top:10px; letter-spacing:1px; }
.abody .kstep .kd { font-size:12.5px; line-height:1.85; color:#6f6a5e; margin-top:3px; }
.abody .kstep svg .rp { fill:none; stroke:#24483c; stroke-width:9; stroke-linecap:round; stroke-linejoin:round; }
.abody .kstep svg .rb { fill:none; stroke:#a9bfb4; stroke-width:9; stroke-linecap:round; stroke-linejoin:round; }
.abody .kstep svg .rw { fill:none; stroke:#d97b3f; stroke-width:9; stroke-linecap:round; stroke-linejoin:round; }
.abody .kstep svg .rbw { fill:none; stroke:#e6b191; stroke-width:9; stroke-linecap:round; stroke-linejoin:round; }
.abody .kstep svg .rail { fill:#efe9db; stroke:#d5cab2; stroke-width:2; }
.abody .kstep svg .hand { fill:#f4ede0; stroke:#d8cdb8; stroke-width:2; }
.abody .kstep svg .wb { fill:none; stroke:#8d9a94; stroke-width:7; stroke-linecap:round; }
.abody .kstep svg text { font-family:'PingFang SC','Microsoft YaHei',sans-serif; font-size:11px; fill:#8a857a; }
.abody .kstep svg text.lab { fill:#b95f2b; font-weight:bold; }
.abody .kstep svg .ar { fill:none; stroke:#b95f2b; stroke-width:2; stroke-dasharray:5 4; }
/* ---- 绳结技能：教学视频位 ---- */
  .abody .kvideo { margin:26px 0; }
.abody .kvideo video { width:100%; display:block; border-radius:12px; background:#000; box-shadow:0 10px 28px rgba(31,63,53,.18); aspect-ratio:16/9; }
.abody .kvideo .kv-box { position:relative; border-radius:12px; overflow:hidden; aspect-ratio:4/3; background:linear-gradient(135deg,#14352b,#245546); box-shadow:0 10px 28px rgba(31,63,53,.18); }
.abody .kvideo .kv-poster { width:100%; height:100%; object-fit:cover; display:block; }
.abody .kvideo .kv-shade { position:absolute; inset:0; background:linear-gradient(180deg, rgba(20,53,43,.10), rgba(20,53,43,.66)); }
.abody .kvideo .kv-badge { position:absolute; top:14px; left:14px; background:rgba(20,53,43,.85); color:#ffd9b8; font-size:12px; letter-spacing:1px; padding:6px 13px; border-radius:999px; }
.abody .kvideo .kv-play { position:absolute; left:50%; top:50%; transform:translate(-50%,-50%); width:66px; height:66px; border-radius:50%; border:none; cursor:pointer; background:rgba(217,123,63,.95); box-shadow:0 8px 24px rgba(0,0,0,.32); transition:transform .2s; }
.abody .kvideo .kv-play:hover { transform:translate(-50%,-50%) scale(1.06); }
.abody .kvideo .kv-play::after { content:''; position:absolute; left:27px; top:20px; border-left:17px solid #fff; border-top:13px solid transparent; border-bottom:13px solid transparent; }
.abody .kvideo .kv-note { position:absolute; left:0; right:0; bottom:0; padding:12px 16px 14px; color:#fff; font-size:13px; letter-spacing:1px; text-align:center; }
.abody .kvideo .kv-note.on { color:#ffd9b8; font-weight:bold; }
.abody .kvideo .kv-cap { font-size:12px; color:#a8a396; text-align:center; margin-top:8px; letter-spacing:1px; }

/* ===== 移动端覆盖：把官网 .abody 的 px 字号换成 rem 体系 ===== */
.abody { font-size: .3rem; line-height: 1.95; }
.abody p { font-size: .3rem; line-height: 1.95; margin: 0 0 .3rem; color: #3d423c; }
.abody h3 { font-size: .36rem; margin: .56rem 0 .22rem; gap: .18rem; padding-bottom: .16rem; }
.abody h3 .no { min-width: .52rem; height: .52rem; padding: 0 .14rem; font-size: .24rem; border-radius: .14rem; }
.abody h3::after { width: .6rem; height: .05rem; }
.abody blockquote { padding: .3rem .3rem; margin: 0 0 .32rem; border-left-width: .08rem; border-radius: 0 .12rem .12rem 0; }
.abody blockquote p { font-size: .27rem; line-height: 1.9; }
.abody blockquote .src { font-size: .2rem; margin-top: .12rem; }
.abody .note { font-size: .25rem; line-height: 1.9; padding: .26rem .28rem; margin: 0 0 .32rem; }
.abody figure { margin: .34rem 0; }
.abody figure img, .abody .img-row figure img { border-radius: .12rem; }
.abody figcaption, .abody .img-row figure figcaption { font-size: .21rem; margin-top: .12rem; letter-spacing: .02rem; }
.abody .img-row { gap: .18rem; margin: .34rem 0; }
.abody table { font-size: .24rem; margin: 0 0 .32rem; border-radius: .12rem; }
.abody table th, .abody table td { padding: .16rem .18rem; line-height: 1.75; }
.abody ul, .abody ol { padding-left: .38rem; margin: 0 0 .32rem; }
.abody li { font-size: .28rem; line-height: 1.9; margin-bottom: .12rem; }
.abody b { color: var(--green); }
.abody a { color: var(--green-lt); }
.abody .knotfig { padding: .22rem .18rem .14rem; border-radius: .16rem; }
.abody .nav-card { padding: .26rem .26rem; border-radius: .16rem; margin: 0 0 .34rem; }
.abody .nav-card .nc-title { font-size: .3rem; margin-bottom: .16rem; }
.abody .nav-card .nc-row { font-size: .25rem; line-height: 1.95; }
.abody .nav-card .nc-btns a, .abody .nav-card .nc-btns button { font-size: .23rem; padding: .12rem .26rem; }
.abody .stat-grid { grid-template-columns: repeat(2, 1fr); gap: .14rem; margin: .3rem 0; }
.abody .stat-grid .st { padding: .22rem .12rem; border-radius: .14rem; }
.abody .stat-grid .st .v { font-size: .42rem; }
.abody .track-box { padding: .3rem .26rem; border-radius: .16rem; }
.abody .track-box a.tbtn { font-size: .25rem; padding: .18rem .34rem; }
.abody .hl-band { padding: .22rem .26rem; border-radius: .14rem; }
.abody .hl-band .hv { font-size: .24rem; }
.abody .seo-block, .abody .seo-faq, .abody .seo-rel { margin-top: .6rem; }
.abody .seo-block .sb-title { font-size: .32rem; }
.abody .seo-facts { padding: .26rem .26rem; border-radius: .14rem; }
.abody .seo-facts .sf-grid { grid-template-columns: 1fr; }
.abody .seo-facts .sf-grid div { font-size: .25rem; line-height: 1.8; }
.abody .seo-faq h3.sf-q { font-size: .28rem; }
.abody .seo-faq .sf-a { font-size: .26rem; line-height: 1.85; }
.abody .seo-rel a.sr-item { padding: .24rem .26rem; border-radius: .14rem; }
.abody .seo-rel .sr-t { font-size: .27rem; }
.abody .seo-rel .sr-d { font-size: .22rem; }
.abody .hook { padding: .3rem .28rem; border-radius: .16rem; }
.abody .task, .abody .cta-band { font-size: .26rem; }