/* ===== 课程体系（列表+独立详情页） v20260905 ===== */
:root{
  --brand:#1E5BFF; --brand2:#8B5CF6; --orange:#FF6B35; --green:#10B981;
  --grad:linear-gradient(135deg,#1E5BFF 0%,#8B5CF6 100%);
  --title:#1A1A2E; --text:#555; --muted:#999;
  --shadow:0 6px 20px rgba(30,91,255,.1);
}
.ld-dot{display:inline-block;border-radius:50%;flex-shrink:0;vertical-align:middle;}
.cz-page{background:#F0F4FF;min-height:100vh;position:relative;}
.cz-page::before{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px);
  background-size:40px 40px;opacity:.3;
}
.cz-page::after{
  content:'';position:fixed;top:-60px;left:-60px;width:300px;height:300px;border-radius:50%;pointer-events:none;z-index:0;
  background:radial-gradient(circle,rgba(30,91,255,.04),rgba(139,92,246,.04) 60%,transparent 70%);
}
.cz-page .cz-banner,.cz-page .cz-list-wrap,.cz-page .cz-footer,.cz-page .czd-topbar,.cz-page .czd-banner,.cz-page .czd-body{position:relative;z-index:1;}
.cz-watermark{position:fixed;right:16px;bottom:18px;width:150px;height:150px;opacity:.05;pointer-events:none;z-index:0;}

/* ===== Banner ===== */
.cz-banner{position:relative;overflow:hidden;padding:26px 20px;height:120px;box-sizing:border-box;background:var(--grad);color:#fff;border-radius:0 0 24px 24px;}
.czb-grid{position:absolute;inset:0;opacity:.08;background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px);background-size:30px 30px;}
.czb-halo{position:absolute;top:-30px;left:-20px;width:200px;height:200px;border-radius:50%;background:radial-gradient(circle at 20% 20%,rgba(255,255,255,.18),transparent 50%);}
.czb-dot{position:absolute;border-radius:50%;background:#fff;animation:czbFloat 8s ease-in-out infinite;}
@keyframes czbFloat{0%,100%{transform:translateY(0);opacity:.3;}50%{transform:translateY(-12px);opacity:.15;}}
.czb-mascot{position:absolute;right:14px;top:50%;transform:translateY(-50%);filter:drop-shadow(0 4px 12px rgba(0,0,0,.18));}
.czb-wm{position:absolute;right:-4px;top:-6px;width:80px;height:80px;opacity:.12;pointer-events:none;}
.czb-row{position:relative;z-index:1;display:flex;align-items:center;gap:12px;}
.czb-ava{
  width:48px;height:48px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  filter:drop-shadow(0 0 12px rgba(255,255,255,.3));animation:czBreathe 4s ease-in-out infinite;
}
@keyframes czBreathe{0%,100%{transform:scale(1);}50%{transform:scale(1.05);}}
.cz-breathe{animation:czBreathe 4s ease-in-out infinite;}
.czb-title{font-size:26px;font-weight:800;letter-spacing:1px;}
.czb-sub{font-size:14px;opacity:.9;margin-top:5px;}

/* ===== 课程卡片（两列网格） ===== */
.cz-list-wrap{padding:16px 16px 8px;display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
.cz-card{
  width:auto;margin:0;background:#fff;border-radius:12px;overflow:hidden;height:290px;
  box-shadow:0 4px 16px rgba(30,91,255,.10);cursor:pointer;transition:transform .25s,box-shadow .25s;
}
/* 339px以下极窄屏回退单列，避免卡片内容过挤 */
@media (max-width:339px){.cz-list-wrap{grid-template-columns:1fr;}}
@keyframes czIn{from{opacity:0;transform:translateY(20px);}to{opacity:1;transform:none;}}
/* 卡片批量渐入：进入视口后触发，按索引依次错开约100ms（--czd 由 JS 写入） */
.cz-card-in{opacity:0;}
.cz-card-in.seen{animation:czIn .4s cubic-bezier(.2,0,.2,1) forwards;animation-delay:var(--czd,0ms);}
@media (hover:hover){
  .cz-card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(30,91,255,.16);}
  .cz-card:hover .czc-mascot{transform:scale(1.1);}
}
.cz-card:active{transform:scale(.97);}

.czc-cover{height:124px;position:relative;overflow:hidden;}
.czc-grid{position:absolute;inset:0;opacity:.1;background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px);background-size:20px 20px;}
.czc-halo{position:absolute;top:-26px;left:-16px;width:170px;height:170px;border-radius:50%;background:radial-gradient(circle at 20% 20%,rgba(255,255,255,.15),transparent 50%);}
.czc-dark{position:absolute;right:-36px;bottom:-44px;width:180px;height:180px;border-radius:50%;background:rgba(0,0,0,.15);}
.czc-line{position:absolute;background:#fff;opacity:.08;transform:rotate(-32deg);}
.czc-line.l1{width:150px;height:3px;left:-24px;top:40px;}
.czc-line.l2{width:110px;height:2px;right:-18px;bottom:30px;transform:rotate(24deg);}
.czc-dot{position:absolute;border-radius:50%;background:#fff;animation:czcDotFloat 6s ease-in-out infinite;}
@keyframes czcDotFloat{0%,100%{transform:translateY(0);opacity:.4;}50%{transform:translateY(-9px);opacity:.2;}}
.czc-num{position:absolute;left:16px;top:50%;transform:translateY(-50%);font-size:44px;font-weight:800;color:#fff;opacity:.15;line-height:1;}
.czc-ico{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);filter:drop-shadow(0 0 10px rgba(255,255,255,.3));}
.czc-mascot{
  position:absolute;right:10px;bottom:6px;width:44px;height:44px;
  filter:drop-shadow(0 0 8px rgba(255,255,255,.4)) drop-shadow(0 0 1px #fff);
  transition:transform .25s;
}
/* 浮动动画作用于内层 img，外层只做定位，hover scale 作用其上，二者不冲突 */
.czc-mascot img{animation:czmFloat 3s ease-in-out infinite;}
@keyframes czmFloat{0%,100%{transform:translateY(0);}50%{transform:translateY(-4px);}}
.czc-mascot .czc-deco{position:absolute;left:-13px;top:-5px;opacity:.95;filter:drop-shadow(0 1px 2px rgba(0,0,0,.2));}
.czc-cat{position:absolute;left:12px;bottom:10px;padding:2px 8px;border-radius:8px;background:rgba(255,255,255,.2);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);color:#fff;font-size:10px;}
/* 分类四色角标（data-cat 由列表卡片写入） */
.cz-card[data-cat="启蒙筑基"] .czc-cat{background:rgba(0,201,167,.88);}
.cz-card[data-cat="考级参赛"] .czc-cat{background:rgba(255,159,28,.88);}
.cz-card[data-cat="科创进阶"] .czc-cat{background:rgba(131,56,236,.88);}
.cz-card[data-cat="赛事冲刺"] .czc-cat{background:rgba(255,107,53,.88);}
.czc-tag{position:absolute;top:10px;right:10px;padding:2px 8px;border-radius:999px;background:#FF6B35;color:#fff;font-size:10px;font-weight:700;}

.czc-body{padding:12px 12px 10px;display:flex;flex-direction:column;}
.czc-name{font-size:15px;font-weight:800;color:#1A1A2E;display:flex;align-items:center;}
.czc-name-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;flex:1;}
.czc-bar{width:4px;height:20px;border-radius:2px;background:#1E5BFF;margin-right:8px;display:inline-block;flex-shrink:0;}
.czc-tagline{font-size:12px;color:#666;line-height:1.5;margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.czc-tags{margin-top:8px;display:flex;flex-wrap:nowrap;overflow:hidden;gap:4px;}
.czc-tagchip{background:#F0F4FF;color:#1E5BFF;font-size:11px;padding:4px 10px;border-radius:12px;white-space:nowrap;}
.czc-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;}
.czc-hours{font-size:12px;color:#999;display:inline-flex;align-items:center;gap:4px;}
.czc-more{font-size:14px;color:#1E5BFF;font-weight:700;display:inline-flex;align-items:center;gap:3px;padding:8px 10px;margin:-8px -10px;}

/* ===== 详情页顶部返回栏 ===== */
.czd-topbar{
  position:sticky;top:0;z-index:100;height:48px;background:#fff;border-bottom:1px solid #EEE;
  display:flex;align-items:center;padding:0 16px;box-sizing:border-box;
}
.czd-back{display:inline-flex;align-items:center;gap:4px;color:#1E5BFF;font-size:14px;cursor:pointer;flex-shrink:0;}
.czd-title{
  position:absolute;left:50%;transform:translateX(-50%);font-size:15px;font-weight:700;color:#1A1A2E;
  max-width:60%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-align:center;
}
.czd-reserve{
  margin-left:auto;flex-shrink:0;background:linear-gradient(135deg,#FF6B35,#FF8F5E);color:#fff;
  font-size:12px;padding:4px 12px;border-radius:12px;text-decoration:none;font-weight:600;
  display:inline-flex;align-items:center;gap:4px;
}

/* ===== 详情Banner ===== */
.czd-banner{position:relative;overflow:hidden;height:160px;color:#fff;}
.czd-bmascot{
  position:absolute;left:20px;top:50%;transform:translateY(-50%);width:64px;height:64px;
  display:flex;align-items:center;justify-content:center;
  filter:drop-shadow(0 0 14px rgba(255,255,255,.3));
}
.czd-binfo{position:absolute;left:100px;right:20px;top:50%;transform:translateY(-50%);}
.czd-bname{font-size:26px;font-weight:800;line-height:1.2;}
.czd-bcat{display:inline-block;font-size:11px;background:rgba(255,255,255,.25);padding:2px 9px;border-radius:10px;margin-top:8px;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);}
.czd-bslogan{font-size:14px;opacity:.9;margin-top:6px;line-height:1.4;}

.czd-body{padding:16px 16px 28px;}
/* 视频模块：外层白色卡片（与 .czd-sec 模块视觉一致），内含1-2个视频item */
.czd-video{margin:16px;width:calc(100% - 32px);background:#fff;border-radius:14px;box-shadow:0 6px 20px rgba(30,91,255,.1);padding:14px;box-sizing:border-box;}
.czv-item + .czv-item{margin-top:16px;}
.czv-title{display:flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:#1A1A2E;margin-bottom:8px;}
.czv-title img{flex-shrink:0;}
.czv-player{aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:#000;position:relative;}
/* vod-player.js 自建的 .vod-player-wrap 无内联尺寸，需撑满16:9容器；其内部 holder 自带 width:100%+aspect-ratio:16/9 */
.czv-player .vod-player-wrap{width:100%;height:100%;}
.czv-empty{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#F5F7FA;}
.czv-mascot{position:relative;opacity:.5;animation:czmFloat 3s ease-in-out infinite;}
.czv-mascot .czv-cam{position:absolute;right:-8px;bottom:2px;}
.czv-t{color:#999;font-size:13px;margin-top:8px;}
/* 视频转码中沙漏占位：统一 .czv-empty 浅色底，沙漏轻缓摆动/旋转 */
.czv-hourglass{display:inline-block;animation:czvHourglass 2.4s ease-in-out infinite;opacity:.85;}
.czv-transcoding .czv-t{max-width:240px;line-height:1.6;text-align:center;}
.czv-tc-t{color:#8FA3C8;font-size:13px;}
@keyframes czvHourglass{0%,100%{transform:rotate(0deg);opacity:.7;}50%{transform:rotate(180deg);opacity:1;}}
/* 查询状态前的加载骨架：沙漏旋转提示 */
.czv-loading .czv-spin{display:inline-block;animation:czvSpin 1.2s linear infinite;opacity:.8;}
.czv-loading .czv-t{color:#B7C3D9;}
@keyframes czvSpin{to{transform:rotate(360deg);}}
/* 加载失败态（②）：提示 + 【重新加载】按钮；refresh 圆环弱呼吸，按钮品牌蓝 */
.czv-failed .czv-failed-ico{display:inline-block;animation:czvBreath 2s ease-in-out infinite;}
@keyframes czvBreath{0%,100%{opacity:.4;}50%{opacity:.85;}}
.czv-failed-t{color:#8FA3C8;}
.czv-failed .czv-mascot{opacity:.7;}
.czv-retry-btn{display:inline-flex;align-items:center;gap:5px;margin-top:12px;padding:7px 20px;
  border:none;border-radius:20px;background:#1E5BFF;color:#fff;font-size:13px;font-weight:600;
  cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
  box-shadow:0 4px 12px rgba(30,91,255,.28);}
.czv-retry-btn svg{flex-shrink:0;}
.czv-retry-btn:hover{background:#1648d6;box-shadow:0 6px 16px rgba(30,91,255,.36);transform:translateY(-1px);}
.czv-retry-btn:active{transform:translateY(0);}
/* 加载失败辅助提示：引导先看课程大纲（验收口径） */
.czv-failed-hint{font-size:12px;color:#8A94A6;margin-top:10px;}

/* 详情模块 */
.czd-sec{margin:0 16px 16px;background:#fff;border-radius:14px;box-shadow:var(--shadow,0 6px 20px rgba(30,91,255,.1));padding:16px;}
.cz-fade{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease;}
.cz-fade.seen{opacity:1;transform:none;}
.czd-sec-title{display:flex;align-items:center;gap:6px;font-size:15px;font-weight:700;color:#1A1A2E;margin-bottom:10px;}
.czd-sec-title .mascot-mini,.czd-sec-title svg,.czd-sec-title img,.czd-sec-title .ld-dot{flex-shrink:0;}
.czd-sec-title svg{color:#1E5BFF;}
.czd-intro{font-size:14px;color:#555;line-height:1.7;margin-top:8px;}

.czd-hl-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px;}
.czd-hl{background:#F0F4FF;border-radius:10px;padding:12px;}
.hl-ico{width:24px;height:24px;display:flex;align-items:center;}
.hl-ico img{width:24px;height:24px;object-fit:contain;}
.hl-t{font-size:13px;font-weight:700;color:#1A1A2E;margin-top:6px;}
.hl-d{font-size:11px;color:#666;margin-top:2px;line-height:1.4;}

.czd-gain{display:flex;align-items:flex-start;margin-top:8px;}
.czd-gain .g-check{
  width:20px;height:20px;border-radius:50%;background:#4CAF50;flex-shrink:0;margin-top:1px;
  display:inline-flex;align-items:center;justify-content:center;
}
.czd-gain span:last-child{font-size:13px;color:#555;margin-left:8px;line-height:1.5;}

.czd-outline-hint{font-size:13px;color:#999;margin-top:8px;}
.czd-outline-btn{
  margin-top:8px;width:100%;height:40px;border-radius:12px;background:var(--grad);border:none;color:#fff;
  font-size:14px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:5px;transition:transform .15s;
  box-shadow:0 4px 12px rgba(30,91,255,.25);
}
.czd-outline-btn:active{transform:scale(.96);}
.czd-outline-btn .arr{display:inline-flex;}
.czd-outline{max-height:0;overflow:hidden;transition:max-height .35s ease;margin-top:12px;}
.czd-outline.open{max-height:2400px;}
.czol-group{font-size:14px;font-weight:800;color:#1A1A2E;margin:14px 0 8px;padding:6px 12px;background:#F0F4FF;border-radius:10px;display:inline-block;}
.czol-item{display:flex;margin-bottom:12px;}
/* 大纲时间轴圆点：IP素材01小图（32px） */
.czol-item .czol-dot{width:32px;height:32px;flex-shrink:0;margin-top:0;background:#fff;border-radius:50%;}
.czol-item .czol-dot img{width:32px;height:32px;object-fit:contain;}
.czol-body{margin-left:10px;flex:1;min-width:0;}
.czol-t{font-size:14px;font-weight:700;color:#333;display:flex;align-items:center;width:100%;}
/* 按次展开：标题行可点击，箭头旋转，知识点区域开合（.czol-fold 改块级使 pts 独立成行） */
.czol-head{display:flex;align-items:center;cursor:pointer;padding:2px 0;}
.czol-fold{display:block;}
.czol-arr{margin-left:auto;transition:transform .25s;flex-shrink:0;display:inline-flex;}
.czol-item.open .czol-arr{transform:rotate(180deg);}
.czol-pts{display:none;padding:4px 0 8px 44px;}
.czol-item.open .czol-pts{display:block;}
.czol-pt{display:flex;align-items:flex-start;font-size:13px;color:#8A94A6;line-height:1.7;margin-top:2px;}
.pt-dot{width:5px;height:5px;border-radius:50%;background:#B7C3D9;margin:9px 8px 0 0;flex-shrink:0;}
.cz-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px;}
.cz-tab{padding:7px 14px;border-radius:18px;font-size:13px;background:#F5F7FA;border:1px solid #E0E0E0;color:#666;cursor:pointer;transition:all .2s;}
.cz-tab.active{background:var(--grad);color:#fff;border-color:transparent;font-weight:700;}

.czd-policy{margin-top:10px;background:#F8F9FA;border-radius:10px;padding:14px;}
.czd-pol{padding:10px 0;border-bottom:1px dashed #E8E8E8;}
.czd-pol:last-child{border-bottom:none;}
.pol-t{font-size:13.5px;font-weight:700;color:#1A1A2E;display:flex;align-items:center;}
.pol-t::before{content:'';width:5px;height:5px;border-radius:50%;background:#FF6B35;margin-right:7px;}
.pol-d{font-size:12.5px;color:#666;margin-top:3px;line-height:1.7;padding-left:12px;}
.pol-d b{color:#1A1A2E;}
.czd-btns{padding:12px 0 4px;display:flex;flex-direction:column;gap:10px;}
.czd-btn{width:100%;height:44px;border-radius:22px;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;text-decoration:none;transition:transform .15s;}
.czd-btn:active{transform:scale(.96);}
.czd-btn{background:var(--grad);color:#fff;box-shadow:0 4px 12px rgba(30,91,255,.3);}
.czd-btn.ghost{background:#fff;color:var(--brand);border:1.5px solid var(--brand);box-shadow:none;margin-top:10px;}

/* 底部版权（列表页） */
.cz-footer{margin-top:8px;padding:24px 0 30px;text-align:center;}
.czf-mascot{display:flex;justify-content:center;margin-bottom:6px;}
.czf-copy{font-size:11px;color:#999;}
.czf-beian{font-size:10px;color:#bbb;margin-top:3px;}
.czf-beian a{color:#bbb;text-decoration:none;}
.czf-slogan{font-size:10px;color:#999;opacity:.6;margin-top:5px;letter-spacing:1px;}

/* 加载失败 */
.cz-load-err{text-align:center;padding:56px 0 50px;color:#999;}
.cz-load-err img{opacity:.85;}
.cz-load-err .err-t{font-size:14px;color:#666;margin:8px 0 14px;}
.cz-load-err button{
  padding:10px 26px;border-radius:22px;background:#fff;border:1.5px solid var(--brand);color:var(--brand);
  font-size:14px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:5px;
}

/* 动画 */
.cz-view-fade{animation:czViewFade .3s ease;}
@keyframes czViewFade{from{opacity:0;}to{opacity:1;}}

/* ===== 375px 窄屏适配（无横向滚动、无溢出） ===== */
@media (max-width:380px){
  .czb-title{font-size:20px;letter-spacing:.5px;}
  .czb-row{gap:10px;}
  .czd-bname{font-size:20px;}
}

/* ===== GESP 考级科普入口（仅图形化编程GESP班详情页：课程简介卡片内、简介下方） ===== */
.cz-gesp-wrap{margin-top:16px;}
.cz-gesp-btn{
  display:block;width:100%;box-sizing:border-box;
  background:linear-gradient(135deg,#FB923C,#F97316);
  border-radius:16px;padding:14px 20px;
  font-size:15px;font-weight:700;color:#fff;line-height:1.5;
  text-align:center;text-decoration:none;
  box-shadow:0 4px 12px rgba(249,115,22,.3);
  transition:transform .15s ease,box-shadow .2s ease,filter .2s ease;
}
.cz-gesp-btn:active{transform:scale(.95);}
.cz-gesp-btn:hover{filter:brightness(1.06);box-shadow:0 6px 16px rgba(249,115,22,.36);}
.cz-gesp-sub{margin-top:8px;text-align:center;font-size:12px;color:#94a3b8;letter-spacing:.5px;}