:root{
  /* 护眼青绿主题 · Serene Teal · 低亮度版（去纯白） */
  --bg:#e6ede9;
  --card:#f4f8f6;
  --card2:#ebf1ee;
  --border:#d6e0db;
  --border-strong:#c4d1cb;
  --text:#3a4a46;
  --title:#26332f;
  --muted:#6e7f7a;
  --teal:#2f8f7d;
  --teal-dark:#247a69;
  --teal-bg:#dcece7;
  --green:#4a9d6b;
  --amber:#b8860b;
  --coral:#d0685a;
  --purple:#8b7fb8;
  --blue:#4a7fa5;
  --gold:#c8962e;
  --nav-bg:rgba(250,252,251,.94);
  --shadow-sm:0 1px 2px rgba(38,51,47,.05);
  --shadow:0 2px 8px rgba(38,51,47,.08);
  --radius:12px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  background:var(--bg);color:var(--text);
  font-family:"Microsoft YaHei","PingFang SC",-apple-system,"Segoe UI",sans-serif;
  line-height:1.6;-webkit-font-smoothing:antialiased;
}
button{font-family:inherit;cursor:pointer}

/* 顶栏 */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 28px;background:var(--nav-bg);border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-sm);flex-wrap:wrap;position:sticky;top:0;z-index:10;
}
.brand{display:flex;align-items:center;gap:14px}
.logo{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-sm);overflow:hidden;flex-shrink:0;
}
.logo img{width:100%;height:100%;display:block;object-fit:cover}
.brand h1{font-size:19px;color:var(--title);font-weight:700;letter-spacing:.5px;line-height:1.3}
.brand .sub{font-size:12px;color:var(--muted);margin-top:1px}
.student-switch{display:flex;gap:8px;background:var(--card2);padding:4px;border-radius:12px}

/* 学生切换按钮 */
.stu-btn{
  padding:8px 18px;border-radius:9px;border:none;background:transparent;
  color:var(--muted);font-size:14px;transition:.18s;font-weight:500;
}
.stu-btn:hover{color:var(--title);background:#fafcfb}
.stu-btn.active{background:#fafcfb;color:var(--teal-dark);font-weight:700;box-shadow:var(--shadow-sm)}
.stu-btn.er.active{color:var(--blue)}

/* 导航 tabs */
.tabs{
  display:flex;gap:2px;padding:12px 28px 0;overflow-x:auto;flex-wrap:wrap;
  background:var(--nav-bg);border-bottom:1px solid var(--border);
}
.tab{
  padding:11px 18px;border:none;background:transparent;color:var(--muted);
  font-size:14px;border-radius:10px 10px 0 0;white-space:nowrap;
  border-bottom:2px solid transparent;transition:.18s;font-weight:500;
}
.tab:hover{color:var(--title);background:var(--card2)}
.tab.active{color:var(--teal-dark);font-weight:700;border-bottom-color:var(--teal)}

.content{padding:24px 28px;max-width:1120px;margin:0 auto;position:relative;z-index:1}

/* 卡片 */
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;margin-bottom:18px;box-shadow:var(--shadow-sm);
}
.card h2{font-size:16.5px;color:var(--title);margin-bottom:12px;font-weight:700}
.card h3{font-size:14.5px;color:var(--title);margin:16px 0 8px;font-weight:600}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:760px){.grid2,.grid3{grid-template-columns:1fr}}

/* 表格 */
table{width:100%;border-collapse:collapse;font-size:13.5px}
th,td{border:1px solid var(--border);padding:9px 12px;text-align:left}
th{background:var(--card2);color:var(--title);font-weight:600;font-size:13px}
tbody tr:hover{background:var(--teal-bg)}

/* 标签 */
.tag{display:inline-block;border-radius:6px;padding:2px 9px;font-size:12px;font-weight:600}
.tag.a{background:#e6f4ec;color:#3d8a5c}
.tag.b{background:#f7eeda;color:#9a7410}
.tag.red{background:#fbe9e6;color:#c0584a}
.tag.new{background:#ece8f7;color:#7a6ea8}

/* 按钮 */
.btn{
  padding:9px 18px;border-radius:9px;border:1px solid var(--border-strong);
  background:#fafcfb;color:var(--title);font-size:13.5px;transition:.18s;font-weight:500;
}
.btn:hover{border-color:var(--teal);color:var(--teal-dark)}
.btn.primary{background:var(--teal);border-color:var(--teal);color:#ffffff;font-weight:600}
.btn.primary:hover{background:var(--teal-dark);border-color:var(--teal-dark);color:#ffffff}
.btn.danger{color:var(--coral)}
.btn.danger:hover{border-color:var(--coral);color:var(--coral)}
.btn.sm{padding:4px 10px;font-size:12px;border-radius:7px}

/* 表单 */
input,select,textarea{
  width:100%;padding:9px 12px;border:1px solid var(--border-strong);border-radius:9px;
  background:#fafcfb;color:var(--text);font-size:13.5px;font-family:inherit;transition:.15s;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px var(--teal-bg)}
label{display:block;font-size:12.5px;color:var(--muted);margin:12px 0 5px;font-weight:500}
.field{margin-bottom:4px}
/* 表格横向滚动容器（手机端列多不溢出，左右滑查看） */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%;border-radius:10px}
.table-wrap table{min-width:560px;width:100%}
/* 薄弱点（错题+难点合并）卡片列表 */
.weak-list{display:flex;flex-direction:column;gap:10px;margin-top:12px}
.weak-card{border-left:4px solid var(--teal);}
.weak-kp{font-weight:700;color:var(--title);font-size:14.5px;margin-top:6px}
.weak-content{font-size:13px;color:var(--text);line-height:1.6;margin-top:4px;white-space:pre-wrap}
.weak-tip{font-size:12.5px;color:#8a6d1c;background:linear-gradient(135deg,#fdf3dd,#fbead0);border-radius:10px;padding:7px 11px;margin-top:6px;font-weight:600}
.weak-how{font-size:12.5px;color:var(--muted);margin-top:6px}
/* 小学版：古诗文卡 */
.poem-card{transition:.18s}
.poem-card:hover{transform:translateY(-2px)}
.poem-title{font-size:15px;font-weight:800;color:var(--primary)}
.poem-body{color:var(--text)}
/* 学习计划调度可视化增强 */
.chap-toggle{color:var(--muted);font-size:12px;flex:none;transition:.2s}
.chapter-detail{background:var(--card2);border-radius:10px;padding:10px 12px;margin:2px 0 8px;font-size:13px}
.pcd-kp{font-size:13px;color:var(--text);line-height:1.6}
.pcd-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.pcd-rel{margin-top:10px;font-size:12.5px;color:var(--muted)}
.pcd-rel .chip{font-size:12px;margin:2px 4px 2px 0}
.next-badge{background:linear-gradient(135deg,var(--primary),var(--primary-d));color:#fff;font-size:10.5px;padding:1px 7px;border-radius:999px;margin-right:6px;vertical-align:1px}
.focus-chips{margin-top:10px;font-size:13px}
.focus-chips .chip{font-size:12.5px;margin:2px 5px 2px 0}
.phase-prog{font-size:12px;float:right;font-weight:700}
.subj-prog{font-size:12px;font-weight:700;margin-left:auto}

/* 打卡 */
.check-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
.check-item{
  display:flex;align-items:center;gap:11px;padding:14px;border:1px solid var(--border);
  border-radius:11px;background:#fafcfb;cursor:pointer;user-select:none;
  transition:.18s;box-shadow:var(--shadow-sm);
}
.check-item:hover{border-color:var(--teal);box-shadow:var(--shadow)}
.check-item.done{border-color:var(--teal);background:var(--teal-bg)}
.check-item .box{
  width:21px;height:21px;border:2px solid var(--border-strong);border-radius:6px;
  display:flex;align-items:center;justify-content:center;font-size:13px;flex-shrink:0;transition:.15s;
}
.check-item.done .box{border-color:var(--teal);background:var(--teal)}
.check-item .box::after{content:""}
.check-item.done .box::after{content:"✓";color:#ffffff;font-weight:bold;font-size:13px}
.check-item .name{font-size:13.5px;color:var(--title);font-weight:500}
.check-item.done .name{color:var(--teal-dark)}

/* 日期选择 */
.date-nav{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.date-nav .date{font-size:16px;color:var(--title);font-weight:700;min-width:112px;text-align:center}
.date-nav .nav-btn{
  padding:7px 14px;border-radius:9px;border:1px solid var(--border-strong);
  background:#fafcfb;color:var(--text);font-size:13.5px;transition:.15s;
}
.date-nav .nav-btn:hover{border-color:var(--teal);color:var(--teal-dark)}

/* 照片网格 */
.photo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:16px}
.photo-card{border:1px solid var(--border);border-radius:11px;overflow:hidden;background:#fafcfb;box-shadow:var(--shadow-sm);transition:.18s}
.photo-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.photo-card img{width:100%;height:135px;object-fit:cover;display:block;cursor:pointer;background:var(--card2)}
.photo-card .info{padding:9px 12px}
.photo-card .info .n{font-size:12.5px;color:var(--title);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:500}
.photo-card .info .c{font-size:11.5px;color:var(--muted)}
.photo-card .del{float:right;color:var(--coral);background:none;border:none;font-size:13px;padding:0 2px}

/* 弹窗 */
.modal-mask{position:fixed;inset:0;background:rgba(38,51,47,.4);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px;backdrop-filter:blur(2px)}
.modal{background:#fafcfb;border:1px solid var(--border);border-radius:16px;padding:24px;width:100%;max-width:520px;max-height:88vh;overflow-y:auto;box-shadow:0 12px 40px rgba(38,51,47,.18)}
.modal h3{font-size:16px;color:var(--title);margin-bottom:16px;font-weight:700}

/* toast */
.toast{
  position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--title);color:#ffffff;padding:11px 22px;border-radius:10px;
  font-size:14px;opacity:0;pointer-events:none;transition:.25s;z-index:200;box-shadow:var(--shadow);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* 空状态 */
.empty{text-align:center;color:var(--muted);padding:36px;font-size:14px}

/* 统计卡 */
.stat{background:var(--card2);border:1px solid var(--border);border-radius:11px;padding:16px}
.stat .v{font-size:26px;color:var(--teal-dark);font-weight:700}
.stat .l{font-size:12.5px;color:var(--muted);margin-top:2px}

/* 进度条 */
.bar{height:8px;background:var(--card2);border-radius:4px;overflow:hidden}
.bar .fill{height:100%;background:var(--teal);border-radius:4px}
.bar .fill.g{background:var(--green)}

/* 目标列表 */
.goal-list{list-style:none}
.goal-list li{padding:6px 0 6px 20px;position:relative;font-size:13.5px;color:var(--text)}
.goal-list li::before{content:"▸";position:absolute;left:2px;color:var(--teal)}

.muted{color:var(--muted);font-size:12.5px}
.mt{margin-top:12px}
.flex{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.spread{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.card2-text{background:var(--card2);border:1px solid var(--border);border-radius:8px;padding:10px 12px;font-size:13.5px;white-space:pre-wrap}

/* 积分徽章 */
.pts-badge{display:inline-flex;align-items:center;gap:3px;font-size:12px;font-weight:700;color:#9a7410;background:#f6ecd4;padding:2px 9px;border-radius:20px}
.pts-big{font-size:32px;font-weight:800;color:#b8860b;line-height:1}

/* 打卡墙（周视图） */
.wall{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}
.wall-day{border:1px solid var(--border);border-radius:10px;padding:10px 6px;text-align:center;background:var(--card);transition:.15s}
.wall-day.today{border-color:var(--teal);background:var(--teal-bg)}
.wall-day.full{border-color:var(--green)}
.wall-day .wd{font-size:12px;color:var(--muted)}
.wall-day .dd{font-size:13px;font-weight:700;color:var(--title);margin:2px 0}
.wall-day .dp{font-size:11.5px;color:#b8860b;font-weight:700}
.wall-day .dc{font-size:11px;color:var(--teal-dark);font-weight:600}

/* 激励台 */
.reward-box{background:linear-gradient(135deg,#f8f0da,#f2e6c6);border:1px solid #e6d4a2;border-radius:12px;padding:16px}
.reward-box .r-title{font-size:14.5px;font-weight:700;color:#8a6d1f}
.reward-box .r-sub{font-size:12.5px;color:#9a7f2e;margin-top:2px}
.reward-bar{height:10px;background:#efe4c6;border-radius:5px;overflow:hidden;margin:10px 0 6px}
.reward-bar .fill{height:100%;background:linear-gradient(90deg,#d4a62e,#c8962e);border-radius:5px}

/* 打卡项时间与方法 */
.check-item{flex-direction:column;align-items:flex-start}
.check-item .row{display:flex;align-items:center;gap:11px;width:100%}
.check-item .name{font-size:14px;color:var(--title);font-weight:600}
.check-item .meta{font-size:11.5px;color:var(--muted);margin-left:32px}
.check-item .pts{font-size:12px;font-weight:700;color:#b8860b;margin-left:auto;flex-shrink:0}

/* 打卡页并排布局：今日任务 | 周打卡墙+兑换进度 */
.checkin-layout{display:grid;grid-template-columns:1fr 360px;gap:18px;align-items:start}
@media(max-width:920px){.checkin-layout{grid-template-columns:1fr}}
.side-col{display:flex;flex-direction:column;gap:18px}

/* 今日已得积分 */
.pts-line{font-size:15px;color:var(--title);font-weight:600;margin-bottom:16px;padding:13px 16px;background:var(--card2);border-radius:10px}
.pts-line .pts-big{margin:0 4px}

/* 上午/下午分组 */
.half-block{margin-bottom:16px}
.half-title{font-size:13px;font-weight:700;color:var(--teal-dark);margin-bottom:9px;border-left:3px solid var(--teal);padding-left:10px}

/* 任务列表 */
.task-list{display:flex;flex-direction:column;gap:10px}
.task-item{display:flex;align-items:flex-start;gap:12px;padding:13px 15px;border:1px solid var(--border);border-radius:11px;background:#fafcfb;cursor:pointer;transition:.18s;box-shadow:var(--shadow-sm)}
.task-item:hover{border-color:var(--teal);box-shadow:var(--shadow)}
.task-item.done{border-color:var(--teal);background:var(--teal-bg)}
.task-item .box{width:21px;height:21px;border:2px solid var(--border-strong);border-radius:6px;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px;transition:.15s}
.task-item.done .box{border-color:var(--teal);background:var(--teal)}
.task-item .box::after{content:""}
.task-item.done .box::after{content:"✓";color:#fff;font-weight:bold;font-size:13px}
.task-info{flex:1;min-width:0}
.task-name{font-size:14.5px;color:var(--title);font-weight:600}
.task-item.done .task-name{color:var(--teal-dark)}
.task-name .pts{font-size:12px;font-weight:700;color:#b8860b;margin-left:6px}
.opt-tag{display:inline-block;font-size:10px;color:var(--muted);border:1px solid var(--border);border-radius:4px;padding:0 4px;margin-left:4px;vertical-align:1px}
.task-meta{font-size:12px;color:var(--muted);margin-top:2px}
.done-bar{margin-top:10px;padding:9px 12px;border:1px dashed var(--border-strong);border-radius:10px;font-size:12.5px;color:var(--muted);text-align:center;cursor:pointer;background:var(--card);transition:.15s}
.done-bar:hover{border-color:var(--teal);color:var(--teal-dark);background:var(--teal-bg)}

/* 几何示意图（AI 生成的 SVG） */
.svg-geo-wrap{background:#fff;border:1px solid var(--border);border-radius:10px;padding:10px;display:flex;justify-content:center}
.svg-geo-wrap svg{max-width:100%;height:auto}

/* 错题分析：分步讲解 */
.step-line{display:flex;gap:10px;align-items:flex-start;padding:8px 12px;margin-bottom:6px;background:var(--card2);border-radius:8px;font-size:13.5px}
.step-num{width:22px;height:22px;border-radius:50%;background:var(--teal);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px}

/* 正解折叠 */
.answer-fold{margin-top:10px;background:#f6ecd4;border:1px solid #e6d4a2;border-radius:8px;padding:10px 14px}
.answer-fold summary{cursor:pointer;font-size:13.5px;color:#8a6d1f;font-weight:600}
.answer-fold summary:hover{color:#6d5518}

/* 高频薄弱点 */
.weak-box{background:var(--card2);border:1px solid var(--border);border-radius:10px;padding:12px 16px;margin-bottom:14px}
.weak-title{font-size:13.5px;font-weight:700;color:var(--title);margin-bottom:8px}
.weak-tags{display:flex;gap:8px;flex-wrap:wrap}
.weak-tag{font-size:12.5px;padding:4px 12px;border-radius:16px;background:#fafcfb;border:1px solid var(--border);color:var(--text)}
.weak-tag.hot{background:#fbe9e6;border-color:var(--coral);color:var(--coral);font-weight:700}

/* 相似错题归并 */
.similar-item{background:var(--card2);border:1px solid var(--border);border-radius:10px;padding:10px 12px;margin-bottom:8px}
.sim-info{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.sim-content{width:100%;font-size:12.5px;color:var(--text);margin-top:4px;line-height:1.5}

/* AI 学习诊断 */
.diag-summary{background:var(--card2);border-left:3px solid var(--teal);border-radius:8px;padding:12px 14px;font-size:14px;line-height:1.7;color:var(--text);margin-bottom:6px}


/* 积分兑换表 */
.reward-list{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.reward-item{display:flex;align-items:center;gap:10px;padding:9px 12px;background:#fffdf5;border:1px solid #e6d9b5;border-radius:8px;font-size:13.5px}
.reward-item .ri-name{flex:1;color:var(--title);font-weight:500}
.reward-item .ri-pts{font-weight:700;color:#b8860b;white-space:nowrap}
.reward-item .ri-state{font-size:12px;color:var(--muted);white-space:nowrap}
.reward-item.got{background:#e6f4ec;border-color:#b8ddc4}
.reward-item.got .ri-state{color:#3d8a5c;font-weight:700}

/* ---------- 学习计划 tab ---------- */
.progress-bar{height:10px;background:var(--card2);border-radius:5px;overflow:hidden;margin:5px 0}
.progress-bar.sm{height:6px;margin:0}
.progress-bar .progress-fill{height:100%;background:var(--teal);border-radius:5px;transition:width .3s}
.progress-bar.gold .progress-fill{background:var(--amber)}
.progress-bar .progress-fill.todo{background:var(--border-strong)}
.plan-head{font-size:13px;color:var(--muted);line-height:1.7}
.plan-head b{color:var(--title)}
.plan-subj{border:1px solid var(--border);border-radius:12px;padding:14px 16px;margin:12px 0;background:#fafcfb}
.plan-subj-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.plan-subj-head .sname{font-size:15px;font-weight:700;color:var(--title)}
.ver-badge{font-size:11.5px;background:var(--card2);border:1px solid var(--border);border-radius:6px;padding:1px 8px;color:var(--muted);font-weight:600}
.pri{font-size:11.5px;border-radius:12px;padding:1px 9px;font-weight:600}
.pri.high{background:#fbe9d0;color:#a05a00}
.pri.mid-high{background:var(--teal-bg);color:var(--teal-dark)}
.pri.mid{background:#e6f1fb;color:var(--blue)}
.pri.keep{background:#eef3f0;color:#4a7a5e}
.phase-title-plan{font-size:13.5px;font-weight:700;margin:10px 0 5px;color:var(--title)}
.phase-title-plan.f{color:var(--teal-dark)}
.phase-title-plan.r{color:var(--blue)}
.phase-title-plan.s{color:var(--amber)}
.phase-title-plan.b{color:var(--muted)}
.chapter-row{display:flex;align-items:center;gap:10px;padding:8px 11px;border:1px solid var(--border);border-radius:9px;margin:5px 0;background:#fff;cursor:pointer;transition:.15s}
.chapter-row:hover{border-color:var(--teal);box-shadow:var(--shadow-sm)}
.chapter-row .cname{font-size:13.5px;color:var(--title);font-weight:500;flex:1;min-width:0}
.chapter-row .ckp{font-size:11.5px;color:var(--muted);margin-top:1px}
.chapter-row .rel{font-size:11.5px;font-weight:700;color:var(--coral);background:#fbe9e6;border:1px solid #f3c4bd;border-radius:10px;padding:1px 8px;white-space:nowrap}
.status-pill{font-size:11.5px;font-weight:700;border-radius:11px;padding:2px 10px;white-space:nowrap;flex-shrink:0}
.status-pill.todo{background:#eef2f0;color:#7d8c88;border:1px solid var(--border)}
.status-pill.doing{background:#fff6e0;color:#9a7300;border:1px solid #ecd9a8}
.status-pill.done{background:#e6f4ec;color:#3d8a5c;border:1px solid #b8ddc4}
.cp-row{display:flex;align-items:center;gap:10px;padding:9px 12px;border:1px solid var(--border);border-radius:9px;margin:5px 0;background:#fff;cursor:pointer;transition:.15s}
.cp-row:hover{border-color:var(--teal);box-shadow:var(--shadow-sm)}
.cp-row .cptext{font-size:13.5px;color:var(--text);flex:1;min-width:0}
.cp-row .cpmeta{font-size:11.5px;color:var(--muted);white-space:nowrap}

/* 今日作业（学校作业登记） */
.homework-box{margin-top:16px;border:1px dashed var(--border-strong);border-radius:11px;padding:14px 16px;background:var(--card2)}
.hw-list{display:flex;flex-direction:column;gap:8px;margin-top:10px}
.hw-item{display:flex;align-items:center;gap:11px;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fafcfb;cursor:pointer;transition:.15s}
.hw-item:hover{border-color:var(--teal)}
.hw-item.done{border-color:var(--green);background:#eaf3e2}
.hw-item .box{width:19px;height:19px;border:2px solid var(--border-strong);border-radius:6px;flex-shrink:0;transition:.15s}
.hw-item.done .box{border-color:var(--green);background:var(--green)}
.hw-item.done .box::after{content:"✓";color:#fff;font-weight:bold;font-size:12px;display:flex;align-items:center;justify-content:center;height:100%}
.hw-item .hw-info{flex:1;min-width:0}
.hw-item .hw-name{font-size:13.5px;color:var(--title)}
.hw-item.done .hw-name{color:var(--green);text-decoration:line-through;opacity:.7}
.hw-item .del{background:none;border:none;color:var(--coral);font-size:13px;padding:2px 4px;flex-shrink:0}

/* 家长看板 · 异常预警 */
.alert-box{border-color:var(--coral)}
.alert-box h2{color:var(--coral)}
.alert-item{border-radius:9px;padding:11px 14px;margin-top:8px;font-size:13.5px;font-weight:500}
.alert-item.warn{background:#fbe9e6;border:1px solid #f3c4bd;color:#b14436}
.alert-item.info{background:#eef3f0;border:1px solid var(--border);color:#4a7a5e}
.tool-card{border-left:4px solid var(--teal)}
.tool-card .flex{flex-wrap:wrap;gap:10px}

/* 复习（记忆曲线） */
.review-card{border-left:4px solid var(--teal)}
.review-cta{display:flex;align-items:center;justify-content:space-between;gap:14px;background:linear-gradient(90deg,var(--teal-bg),var(--card));border:1px solid var(--border)}
.review-cta b{color:var(--teal-dark);font-size:18px}
/* 优化建议 & 鼓励卡片 */
.optimize-card{background:linear-gradient(135deg,#fff7e8,#fff);border:1px solid #f0d9a8;cursor:pointer;transition:.15s}
.optimize-card:hover{box-shadow:0 2px 10px rgba(224,169,72,.18)}
.opt-enc{margin-top:8px;font-size:13.5px;line-height:1.7;color:var(--primary);font-weight:600}
.btn.ok{background:var(--green);color:#fff;border:1px solid var(--green)}
.btn.ok:hover{filter:brightness(1.05)}
.btn.warn{background:#fff;color:var(--amber);border:1px solid #e3c879}
.btn.warn:hover{background:#fff8e6}
.btn.ok,.btn.warn{padding:11px 16px;font-size:14px;font-weight:600;border-radius:10px}

/* ---------- 登录页（家庭口令门禁） ---------- */
.login-wrap{position:fixed;inset:0;z-index:1000;background:var(--bg);display:flex;align-items:center;justify-content:center;padding:24px;overflow-y:auto}
.login-grid{width:100%;max-width:880px;display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center}
.brand-side .logo-f{display:flex;align-items:center;gap:13px}
.logo-f .col{display:flex;flex-direction:column;gap:3px}
.logo-f .wm{font-size:22px;font-weight:800;letter-spacing:.08em;color:var(--title);line-height:1}
.logo-f .wm i{font-style:normal;color:var(--teal)}
.logo-f .dm{font-size:11.5px;letter-spacing:.18em;color:var(--muted);font-weight:600}
.logo-f .dm b{color:var(--teal);font-weight:700}
.brand-side .logo-f svg{width:54px;height:54px;border-radius:15px;flex-shrink:0;box-shadow:var(--shadow)}
.brand-side .miracle{font-family:"Songti SC","Noto Serif SC",Georgia,serif;font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:800;color:var(--title);margin-bottom:12px}
.brand-side .miracle em{font-style:normal;color:var(--amber);position:relative}
.brand-side .miracle em::after{content:"";position:absolute;left:0;bottom:2px;width:100%;height:7px;background:#f6ecd4;opacity:.8;border-radius:4px;z-index:-1}
.slogan-line{display:inline-flex;align-items:center;gap:10px;font-family:"Songti SC","Noto Serif SC",Georgia,serif;font-size:14.5px;color:var(--amber);letter-spacing:.08em;font-weight:700;margin-bottom:22px}
.slogan-line::before,.slogan-line::after{content:"";width:22px;height:1.5px;background:var(--amber);opacity:.4;border-radius:1px}
.brand-side .proofs{display:flex;gap:22px}
.brand-side .proofs .pr{text-align:center}
.brand-side .proofs .pr b{font-size:24px;color:var(--teal);font-family:"Songti SC","Noto Serif SC",Georgia,serif}
.brand-side .proofs .pr span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.login-card{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:30px;box-shadow:0 8px 32px rgba(38,51,47,.12)}
.login-card h3{font-size:17px;color:var(--title);margin-bottom:4px}
.login-card .sub{font-size:12.5px;color:var(--muted);margin-bottom:18px}
.login-card .field{margin-bottom:14px}
.login-card label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:6px;font-weight:600}
.login-card input{width:100%;padding:13px 16px;border:1.5px solid var(--border-strong);border-radius:13px;background:var(--card2);color:var(--text);font-size:15px;font-family:inherit;transition:.2s}
.login-card input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px var(--teal-bg)}
.login-card .btn{width:100%;padding:14px;border:none;border-radius:14px;font-size:16px;font-weight:700;cursor:pointer;background:linear-gradient(135deg,var(--teal),var(--teal-dark));color:#fff;box-shadow:var(--shadow);font-family:inherit;margin-top:4px;transition:.2s}
.login-card .btn:hover{filter:brightness(1.06)}
.login-err{color:var(--coral);font-size:12.5px;margin-top:10px;min-height:16px}
.login-card .foot{margin-top:12px;font-size:12px;color:var(--muted);text-align:center}
.logout-btn{border:1px solid var(--border);background:var(--card2);border-radius:9px;padding:6px 11px;cursor:pointer;color:var(--muted);font-size:15px;line-height:1}
.logout-btn:hover{border-color:var(--coral);color:var(--coral)}
@media(max-width:820px){
  .login-grid{grid-template-columns:1fr;max-width:420px;gap:26px}
  .brand-side .proofs{display:none}
  .brand-side .miracle{font-size:clamp(26px,8vw,36px)}
}

/* ---------- 底部主导航（手机/平板优先；桌面自动隐藏） ---------- */
.bottom-tabs{
  display:none;
  position:fixed;bottom:0;left:0;right:0;z-index:40;
  background:var(--nav-bg);border-top:1px solid var(--border);
  padding:6px 8px calc(8px + env(safe-area-inset-bottom));
  box-shadow:0 -2px 12px rgba(38,51,47,.06);
}
.bottom-tabs .bt{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;
  padding:8px 4px;border:none;background:none;color:var(--muted);
  font-size:11px;font-weight:600;cursor:pointer;border-radius:11px;transition:.18s;font-family:inherit;
}
.bottom-tabs .bt .ic{font-size:21px;line-height:1}
.bottom-tabs .bt.active{color:var(--teal-dark);background:var(--teal-bg)}
@media(max-width:1024px){
  .bottom-tabs{display:flex}
  .content{padding-bottom:96px}
}

/* ---------- 今日页 ---------- */
.today-strip,.stat-strip{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px 14px;
  background:var(--card);border:1px solid var(--border);border-radius:12px;
  padding:11px 15px;box-shadow:var(--shadow-sm);margin-bottom:14px;
}
.today-strip .ts-greet{font-size:14.5px;font-weight:800;color:var(--title)}
.today-strip .ts-sep{width:1px;height:16px;background:var(--border-strong)}
.today-strip .ts-item,.stat-strip .ts-item{font-size:12.5px;font-weight:600;color:var(--muted);white-space:nowrap}
.today-hero{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow-sm);margin-bottom:16px}
.today-greet{font-size:19px;font-weight:800;color:var(--title);margin-bottom:12px;letter-spacing:.5px}
.ring{width:72px;height:72px;border-radius:50%;display:flex;align-items:center;justify-content:center;position:relative;flex-shrink:0}
.ring::before{content:"";position:absolute;inset:9px;border-radius:50%;background:var(--card)}
.ring b{position:relative;z-index:1;font-size:16px;color:var(--teal-dark)}

/* ---------- 科目宫格 ---------- */
.subject-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.subj-card{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  padding:18px 14px;text-align:center;cursor:pointer;transition:.18s;box-shadow:var(--shadow-sm);
}
.subj-card:hover{border-color:var(--teal);box-shadow:var(--shadow);transform:translateY(-2px)}
.subj-ic{font-size:30px;line-height:1;margin-bottom:8px}
.subj-nm{font-size:14.5px;font-weight:700;color:var(--title)}
.subj-n{font-size:11.5px;color:var(--muted);margin-top:2px}
.subj-st{display:inline-block;margin-top:6px;font-size:11px;font-weight:700;color:var(--teal-dark);background:var(--teal-bg);border-radius:10px;padding:1px 9px}

/* ---------- 我的聚合 ---------- */
.mine-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
@media(max-width:480px){.mine-grid{grid-template-columns:repeat(2,1fr)}}

/* ============ 皮肤系统（大师级动态主题 · data-theme 覆盖 CSS 变量）============ */
/* 背景渐变基座（body）与半透明卡片层，让动态背景透过卡片可见 */
[data-theme="dawn"]{
  --bg:linear-gradient(165deg,#fbf7ef,#f6ecdd 48%,#e7f0ea);
  --card:rgba(255,255,255,.66); --card2:rgba(255,255,255,.5); --border:rgba(180,168,148,.4); --border-strong:rgba(160,148,128,.55);
  --text:#4a463c; --title:#2f2b22; --muted:#8a8271;
  --teal:#3f9d8c; --teal-dark:#2e7d6f; --teal-bg:rgba(63,157,140,.14); --amber:#c98a2e; --coral:#d0685a;
  --shadow-sm:0 1px 3px rgba(80,60,30,.06); --shadow:0 3px 12px rgba(80,60,30,.1);
  --nav-bg:rgba(251,247,239,.94);
}
[data-theme="forest"]{
  --bg:linear-gradient(165deg,#f1f7ea,#e4f0d9 48%,#d5e8cd);
  --card:rgba(255,255,255,.64); --card2:rgba(255,255,255,.48); --border:rgba(140,168,128,.4); --border-strong:rgba(120,152,108,.55);
  --text:#3c4635; --title:#26301f; --muted:#77836c;
  --teal:#4a8a5e; --teal-dark:#387048; --teal-bg:rgba(74,138,94,.14); --amber:#b98a2e; --coral:#c07a4a;
  --shadow-sm:0 1px 3px rgba(40,70,40,.06); --shadow:0 3px 12px rgba(40,70,40,.1);
  --nav-bg:rgba(244,250,240,.94);
}
[data-theme="starry"]{
  --bg:linear-gradient(165deg,#0b1026,#131a3a 52%,#1d2753);
  --card:rgba(32,42,80,.5); --card2:rgba(42,54,100,.4); --border:rgba(130,155,220,.25); --border-strong:rgba(155,178,235,.4);
  --text:#dbe2f0; --title:#f4f7fc; --muted:#9aa8c4;
  --teal:#7aa2ff; --teal-dark:#5f8aff; --teal-bg:rgba(122,162,255,.16); --amber:#ffc46b; --coral:#ff8f7a;
  --shadow-sm:0 1px 3px rgba(0,0,0,.3); --shadow:0 4px 16px rgba(0,0,0,.35);
  --nav-bg:rgba(16,21,42,.96);
}
[data-theme="aurora"]{
  --bg:linear-gradient(170deg,#0a1128,#151044 50%,#0e2a3a);
  --card:rgba(30,34,72,.5); --card2:rgba(40,44,92,.4); --border:rgba(150,130,225,.25); --border-strong:rgba(175,155,245,.4);
  --text:#e2dcf5; --title:#f7f4ff; --muted:#a89fce;
  --teal:#7dffce; --teal-dark:#4fe0b0; --teal-bg:rgba(125,255,206,.13); --amber:#ffc46b; --coral:#ff8f9a;
  --shadow-sm:0 1px 3px rgba(0,0,0,.32); --shadow:0 4px 16px rgba(0,0,0,.38);
  --nav-bg:rgba(18,18,44,.96);
}
[data-theme="cyber"]{
  --bg:linear-gradient(165deg,#0c1018,#121b2d 50%,#0e1727);
  --card:rgba(26,34,54,.52); --card2:rgba(34,44,68,.42); --border:rgba(90,190,225,.24); --border-strong:rgba(115,212,240,.4);
  --text:#d6e6f0; --title:#eef7fc; --muted:#8aa4b8;
  --teal:#4ff0ff; --teal-dark:#2fd0e8; --teal-bg:rgba(79,240,255,.13); --amber:#ffc46b; --coral:#ff7ad9;
  --shadow-sm:0 1px 3px rgba(0,0,0,.35); --shadow:0 4px 16px rgba(0,0,0,.4);
  --nav-bg:rgba(13,17,27,.96);
}
/* 热血球场：黑色高对比 · 篮球女孩 · 坚韧与梦想 */
[data-theme="hoops"]{
  --bg:linear-gradient(170deg,#0a0a0c,#15100c 48%,#0b0908);
  --card:rgba(26,19,13,.5); --card2:rgba(42,30,18,.4); --border:rgba(238,103,48,.28); --border-strong:rgba(255,140,80,.45);
  --text:#f0e9e2; --title:#fff7f0; --muted:#a89a8c;
  --teal:#ee6730; --teal-dark:#ff8a50; --teal-bg:rgba(238,103,48,.16); --amber:#ffb340; --coral:#ff7a4a;
  --shadow-sm:0 1px 3px rgba(0,0,0,.4); --shadow:0 4px 16px rgba(0,0,0,.5);
  --nav-bg:rgba(15,11,9,.97);
}
[data-theme="hoops"] .stu-btn.active,[data-theme="hoops"] .btn{background:var(--card2)}
[data-theme="hoops"] .btn{color:#f4ece4}
[data-theme="hoops"] input,[data-theme="hoops"] select,[data-theme="hoops"] textarea{background:#171008;color:#f4ece4;border-color:rgba(238,103,48,.3)}
[data-theme="hoops"] .logo-f .wm,[data-theme="hoops"] .brand h1,[data-theme="hoops"] .miracle{color:#fff7f0}
/* 热血球场登录页：奇迹大字橙色聚光（大片级） */
[data-theme="hoops"] .brand-side .miracle{text-shadow:0 0 24px rgba(238,103,48,.7),0 0 70px rgba(238,103,48,.42)}
[data-theme="hoops"] .brand-side .slogan-line{color:#ffb340}
[data-theme="hoops"] .login-card{border-color:rgba(238,103,48,.4);background:rgba(16,11,8,.5)}
/* 登录页 hero：<img> + CSS 兜底 cover 焦点(72% 74%)对准人物特写 + JS 像素定位，双保险 */
.login-bg-img{position:fixed;left:0;top:0;width:100vw;height:100vh;object-fit:cover;object-position:72% 74%;z-index:0;pointer-events:none;display:none;background:#1a0e08}
.login-canvas{position:fixed;inset:0;width:100vw;height:100vh;display:none;z-index:1;pointer-events:none}
.login-wrap .login-grid{position:relative;z-index:2}
/* 关键修复：login-wrap 必须有不透明深色兜底（防止 img 加载失败或被遮时透出主页内容） */
.login-wrap{background:#1a0e08}
/* 主页动态背景：<img> + CSS 兜底 object-fit:contain + JS 像素定位 */
.dynamic-bg-img{position:fixed;left:0;top:0;width:100vw;height:100vh;object-fit:contain;object-position:center;z-index:0;pointer-events:none;display:none;background:#0a0807}

/* 原始普通主题（保留在商城：经典/暖阳/森语/星夜，无动态背景） */
[data-theme="classic"]{
  --bg:#e6ede9; --card:#f4f8f6; --card2:#ebf1ee; --border:#d6e0db; --border-strong:#c4d1cb;
  --text:#3a4a46; --title:#26332f; --muted:#6e7f7a;
  --teal:#2f8f7d; --teal-dark:#247a69; --teal-bg:#dcece7; --amber:#b8860b; --coral:#d0685a;
  --nav-bg:rgba(250,252,251,.94);
}
[data-theme="sunny"]{
  --bg:#f7eedd; --card:#fffcf6; --card2:#fbf1e4; --border:#ecdcc4; --border-strong:#dfc9a8;
  --text:#4a3a28; --title:#2b231a; --muted:#8d7a63;
  --teal:#c97a2b; --teal-dark:#a8611c; --teal-bg:#fbead6; --amber:#d9822b; --coral:#e2574a;
  --nav-bg:rgba(255,251,243,.94);
}
[data-theme="forestc"]{
  --bg:#e8f2e4; --card:#f9fcf7; --card2:#edf5e9; --border:#d3e3cc; --border-strong:#b9d3b0;
  --text:#33402f; --title:#232e21; --muted:#75806e;
  --teal:#3e7d4e; --teal-dark:#2f663e; --teal-bg:#e0efe2; --amber:#c98a2e; --coral:#c07a4a;
  --nav-bg:rgba(248,252,246,.94);
}
[data-theme="starryc"]{
  --bg:#101828; --card:#1d2740; --card2:#232f4d; --border:#33446b; --border-strong:#46588a;
  --text:#dbe2f0; --title:#f4f7fc; --muted:#9aa8c4;
  --teal:#7aa2ff; --teal-dark:#5f8aff; --teal-bg:#233155; --amber:#ffc46b; --coral:#ff8f7a;
  --nav-bg:rgba(20,28,48,.96);
}
[data-theme="starryc"] .stu-btn.active,[data-theme="starryc"] .btn{background:#232f4d}
[data-theme="starryc"] .btn{color:#e8ecf4}
[data-theme="starryc"] input,[data-theme="starryc"] select,[data-theme="starryc"] textarea{background:#161f36;color:#e8ecf4}
[data-theme="starryc"] .logo-f .wm,[data-theme="starryc"] .brand h1,[data-theme="starryc"] .miracle{color:#f4f7fc}
/* 深色主题输入控件与按钮适配 */
[data-theme="starry"] .stu-btn.active,[data-theme="starry"] .btn,
[data-theme="aurora"] .stu-btn.active,[data-theme="aurora"] .btn,
[data-theme="cyber"]  .stu-btn.active,[data-theme="cyber"]  .btn{background:var(--card2)}
[data-theme="starry"] .btn,[data-theme="aurora"] .btn,[data-theme="cyber"] .btn{color:#e8ecf4}
[data-theme="starry"] input,[data-theme="starry"] select,[data-theme="starry"] textarea,
[data-theme="aurora"] input,[data-theme="aurora"] select,[data-theme="aurora"] textarea,
[data-theme="cyber"]  input,[data-theme="cyber"]  select,[data-theme="cyber"]  textarea{background:#161f36;color:#e8ecf4}
[data-theme="starry"] .logo-f .wm,[data-theme="starry"] .brand h1,[data-theme="starry"] .miracle,
[data-theme="aurora"] .logo-f .wm,[data-theme="aurora"] .brand h1,[data-theme="aurora"] .miracle,
[data-theme="cyber"]  .logo-f .wm,[data-theme="cyber"]  .brand h1,[data-theme="cyber"]  .miracle{color:#f4f7fc}

/* ---------- 动态背景层（Canvas + rAF 引擎；位于 body 渐变之上、内容之下） ---------- */
.dynamic-bg{position:fixed;inset:0;z-index:0;pointer-events:none;display:none;transform:translateZ(0)}

/* ---------- 皮肤商城（动态主题卡片） ---------- */
.skin-card[data-bg] .skin-prev::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,transparent 32%,rgba(255,255,255,.3) 50%,transparent 68%);
  background-size:220% 100%;animation:skinShine 2.8s linear infinite;
}
@keyframes skinShine{from{background-position:190% 0}to{background-position:-70% 0}}
.skin-badge{position:absolute;top:8px;left:8px;background:rgba(255,255,255,.85);color:#555;font-size:10.5px;font-weight:700;padding:2px 8px;border-radius:999px}
.skin-dyn{display:inline-block;font-size:10px;font-weight:700;color:var(--teal-dark);background:var(--teal-bg);border:1px solid var(--border);padding:1px 7px;border-radius:999px;margin-left:4px;vertical-align:2px}
/* 商城预览底色（各主题代表色） */
.skin-card[data-bg="dawn"] .skin-prev{background:linear-gradient(150deg,#fbf3e4,#e6efe8)}
.skin-card[data-bg="forest"] .skin-prev{background:linear-gradient(150deg,#eef5e4,#d3e6ca)}
.skin-card[data-bg="starry"] .skin-prev{background:linear-gradient(150deg,#131a3a,#26336b);color:#e8ecf4}
.skin-card[data-bg="aurora"] .skin-prev{background:linear-gradient(150deg,#141040,#173a50);color:#e2dcf5}
.skin-card[data-bg="cyber"] .skin-prev{background:linear-gradient(150deg,#121b2d,#0c3a52);color:#d6e6f0}
.skin-card[data-bg="hoops"] .skin-prev{background:linear-gradient(150deg,#15100c,#3a1c0c);color:#ffd9b8}
.skin-card[data-bg="dawn"] .skin-prev .skin-nm,
.skin-card[data-bg="forest"] .skin-prev .skin-nm{color:#4a463c;text-shadow:none}

/* 皮肤商城 */
.skin-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin-top:6px}
.skin-card{border:1.5px solid var(--border);border-radius:14px;overflow:hidden;background:var(--card2);transition:.18s}
.skin-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.skin-card.using{border-color:var(--teal);box-shadow:0 0 0 2px var(--teal-bg)}
.skin-prev{height:86px;display:flex;align-items:center;justify-content:center;position:relative;flex-direction:column;gap:2px}
.skin-prev .skin-nm{font-size:12px;font-weight:700;color:#fff;text-shadow:0 1px 4px rgba(0,0,0,.45)}
.skin-info{padding:10px 12px}
.skin-t{font-size:13.5px;font-weight:700;color:var(--title)}
.skin-p{font-size:12px;color:var(--amber);font-weight:700;margin-top:1px}
.skin-d{font-size:11px;color:var(--muted);margin:2px 0 8px}

/* 手机端二级导航：返回面包屑 */
.crumb{display:none;align-items:center;gap:10px;padding:10px 16px;background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:25}
.crumb .crumb-back{border:1px solid var(--border-strong);background:var(--card2);border-radius:9px;padding:6px 13px;font-size:13px;font-weight:600;color:var(--teal-dark);cursor:pointer;font-family:inherit}
.crumb .crumb-back:hover{border-color:var(--teal)}
.crumb .crumb-name{font-size:13.5px;font-weight:700;color:var(--title)}

/* ============ 激励中心（多邻国式）============ */
.page-head{margin:4px 2px 14px}
.page-head h2{font-size:20px;font-weight:800;color:var(--title);margin:0 0 4px}
.page-head .muted{font-size:12.5px}
.pts-chip{
  display:inline-flex;align-items:center;height:34px;flex-shrink:0;margin-left:8px;
  border:0;border-radius:19px;cursor:pointer;font-size:13.5px;font-weight:800;
  font-family:inherit;transition:.18s;white-space:nowrap;overflow:hidden;
  background:linear-gradient(135deg,#ffe08a 0%,#ffb63c 38%,#ff8a1e 72%,#f25c10 100%);
  color:#fff;
  text-shadow:0 1px 2px rgba(180,60,0,.35);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.55), 0 2px 10px rgba(255,138,30,.4);
}
.pts-chip:hover{transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.55), 0 5px 16px rgba(255,138,30,.5)}
.pts-chip:active{transform:translateY(0)}
.pts-chip .chip-p1{display:inline-flex;align-items:center;gap:4px;padding:0 9px 0 12px;height:100%}
.pts-chip .chip-p2{display:inline-flex;align-items:center;gap:4px;padding:0 12px 0 9px;height:100%;background:linear-gradient(135deg,rgba(255,255,255,.28),rgba(255,255,255,.12))}
.pts-chip .chip-div{width:1px;height:16px;background:rgba(255,255,255,.5)}
.pts-chip .chip-ic{font-size:12.5px;line-height:1}
.pts-chip b,.pts-chip span{line-height:1}

/* 庆祝横幅（打卡全完成，多邻国式，配色随皮肤 --amber/--gold） */
.celebrate-bar{
  position:fixed;top:82px;left:50%;transform:translateX(-50%) translateY(-24px);
  background:linear-gradient(135deg,var(--amber),var(--gold));color:#fff;
  padding:11px 24px;border-radius:999px;font-weight:800;font-size:14px;letter-spacing:.3px;
  box-shadow:0 10px 28px rgba(252,138,42,.42);z-index:60;opacity:0;pointer-events:none;
  transition:.38s cubic-bezier(.34,1.56,.64,1);white-space:nowrap;
  display:flex;align-items:center;gap:10px;
}
.celebrate-bar.show{opacity:1;transform:translateX(-50%) translateY(0)}
.celebrate-bar .cb-stars{display:inline-block;font-size:15px;animation:cbTwinkle .9s ease-in-out infinite alternate}
.celebrate-bar.show .cb-stars:last-child{animation-delay:.25s}
@keyframes cbTwinkle{from{transform:scale(.85) rotate(-8deg);opacity:.7}to{transform:scale(1.25) rotate(8deg);opacity:1}}
.rc .rc-head{display:flex;align-items:center;gap:14px;background:var(--card2);border:1px solid var(--border);border-radius:14px;padding:16px}
.rc-lv-badge{
  width:58px;height:58px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--amber),var(--gold));color:#fff;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  box-shadow:0 3px 12px rgba(200,150,46,.35);
}
.rc-lv-badge span{font-size:22px;font-weight:800;line-height:1}
.rc-lv-badge .rc-lv-label{font-size:10px;opacity:.9}
.rc-title{font-size:16px;font-weight:800;color:var(--title);margin-bottom:8px}
.rc-bar{height:9px;background:var(--border);border-radius:5px;overflow:hidden}
.rc-fill{height:100%;background:linear-gradient(90deg,var(--amber),var(--gold));border-radius:5px;transition:width .4s}
.rc-bar-note{font-size:11px;color:var(--muted);margin-top:4px}
.rc-nums{display:flex;gap:10px;margin:12px 0 4px}
.rc-num{flex:1;text-align:center;background:var(--card2);border:1px solid var(--border);border-radius:12px;padding:11px 6px}
.rc-num b{display:block;font-size:18px;color:var(--title)}
.rc-num span{font-size:11px;color:var(--muted)}
.rc-sec{font-size:14px;color:var(--title);margin:16px 0 9px;display:flex;align-items:center;gap:6px}
.rc-badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:9px}
.rc-badge{
  background:var(--card2);border:1px solid var(--border);border-radius:12px;
  padding:10px 6px;text-align:center;opacity:.45;filter:grayscale(.6);transition:.2s;
}
.rc-badge.got{opacity:1;filter:none;border-color:var(--gold);background:linear-gradient(180deg,#fff8e8,var(--card2))}
.rc-badge span{font-size:24px;display:block}
.rc-badge div{font-size:11px;font-weight:700;color:var(--title);margin-top:3px}
.rc-badge .rc-b-d{font-size:10px;font-weight:400;color:var(--muted);margin-top:1px}
.rc-hint{background:var(--teal-bg);border:1px solid var(--border);border-radius:10px;padding:9px 13px;font-size:12.5px;color:var(--teal-dark);margin-top:12px}
.rc-rewards{display:flex;flex-direction:column;gap:8px}
.rc-reward{display:flex;align-items:center;gap:11px;background:var(--card2);border:1px solid var(--border);border-radius:12px;padding:11px 13px}
.rc-reward.can{border-color:var(--green);background:#eaf3e2}
.rc-r-icon{font-size:24px}
.rc-r-info{flex:1;min-width:0}
.rc-r-name{font-size:14px;font-weight:700;color:var(--title)}
.rc-r-pts{font-size:11.5px;color:var(--muted);margin-top:1px}
.rc-r-pts b{color:var(--amber)}
.rc-reward.can .rc-r-pts{color:#3d8a5c}
.rc-r-p{font-size:13px;font-weight:800;color:var(--gold);white-space:nowrap}

/* 折叠标题 */
.fold-title{cursor:pointer;font-size:14.5px;font-weight:700;color:var(--title);padding:4px 0;font-family:inherit}
.fold-title:hover{color:var(--teal-dark)}
.fold-title .muted{font-size:12px}
.more-tools{margin:14px 0;border:1px dashed var(--border-strong);border-radius:12px;padding:12px 14px}

@media(max-width:1024px){
  .tabs{display:none}  /* 手机/平板：顶部 17 tab 收进二级导航 */
  .crumb{display:flex}
}

/* ---------- 响应式（平板 + 手机） ---------- */
@media (max-width:920px){
  .checkin-layout{grid-template-columns:1fr}
  .side-col{flex-direction:column}
}
@media (max-width:760px){
  .content{padding:16px 14px}
  .topbar{padding:14px 16px;flex-wrap:wrap;gap:10px}
  .tabs{padding:10px 14px 0;flex-wrap:nowrap;overflow-x:auto}
  .tab{padding:10px 12px;font-size:13px;white-space:nowrap}
  .grid2,.grid3{grid-template-columns:1fr}
  .card{padding:16px}
  .photo-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
  .wall{grid-template-columns:repeat(7,1fr);gap:4px}
  .wall-day{padding:8px 2px}
  .wall-day .dd{font-size:11px}
  .plan-subj-head{flex-wrap:wrap}
  .modal{padding:18px}
  .btn,.btn.sm{padding:10px 14px;font-size:14px}
  input,select,textarea{font-size:16px}
  .homework-box{padding:12px}
}


/* 底部导航遮挡修复（置于文件末尾，确保不被 padding 简写覆盖） */
@media(max-width:1024px){
  .content{padding-bottom:112px !important}
}

/* ---------- 每日目标（多邻国式进度环） ---------- */
.today-head{display:flex;align-items:center;gap:16px;margin-bottom:14px;padding:4px 2px}
.goal-wrap{position:relative;width:88px;height:88px;flex:0 0 88px}
.goal-ring{display:block}
.goal-num{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;color:var(--title)}
.goal-unit{font-size:10px;font-weight:500;color:var(--muted);margin-left:2px}
.goal-lbl{position:absolute;top:66px;left:0;right:0;text-align:center;font-size:9px;color:var(--muted)}
.today-head-right{flex:1;min-width:0}
.today-head .today-strip{flex-wrap:wrap;row-gap:4px;margin-top:2px}

/* ---------- B2 每日单词卡：今日新词/复习细分条 ---------- */
.vocab-today{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 8px}
.vocab-today span{padding:4px 12px;border-radius:16px;font-size:12.5px}
.vt-new{background:rgba(238,103,48,.14);color:var(--amber);border:1px solid var(--border-strong)}
.vt-rev{background:rgba(47,143,125,.12);color:var(--teal-dark);border:1px solid var(--border)}
.vt-total{background:var(--card2);color:var(--muted);border:1px solid var(--border)}

/* ---------- 独立账户：学生角色固定账户名标签 ---------- */
.stu-label{display:inline-block;padding:6px 14px;border-radius:18px;font-size:13px;font-weight:600;color:var(--title);background:var(--card2);border:1px solid var(--border)}

/* ---------- 单词卡：紧凑年级选择器（下拉 + 左右拨动） ---------- */
.lv-picker{display:inline-flex;align-items:center;gap:4px;background:var(--card2);border:1px solid var(--border);border-radius:12px;padding:3px 4px}
.lv-arrow{width:30px;height:30px;border:none;background:var(--teal-bg);color:var(--teal-dark);border-radius:9px;font-size:18px;font-weight:700;cursor:pointer;flex:0 0 auto;line-height:1;transition:.15s}
.lv-arrow:active{transform:scale(.92)}
.lv-select{max-width:140px;padding:6px 8px;border:1px solid var(--border);border-radius:9px;background:var(--card);color:var(--text);font-family:inherit;font-size:13px;font-weight:600}

/* ---------- 发音人物：可点击芯片（常驻可见） ---------- */
.voice-chips{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.vchip{padding:5px 11px;border-radius:16px;font-size:12px;background:var(--card2);border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;transition:.15s;user-select:none;white-space:nowrap}
.vchip:hover{border-color:var(--teal)}
.vchip.active{background:var(--teal);border-color:var(--teal);color:#fff;font-weight:600}

/* ---------- 单词列表迷你卡（点按进入全屏） ---------- */
.wc-mini{background:var(--card2);border:1px solid var(--border);border-radius:12px;padding:12px 14px;margin-bottom:8px;cursor:pointer;transition:.15s}
.wc-mini:hover{border-color:var(--teal);background:var(--card)}
.wc-mini:active{transform:scale(.99)}

/* ---------- 百词斩式全屏单词卡 ---------- */
.word-fs{display:none;position:fixed;inset:0;z-index:300;flex-direction:column;background:var(--bg);padding:env(safe-area-inset-top) 18px calc(18px + env(safe-area-inset-bottom))}
.word-fs-top{display:flex;align-items:center;gap:10px;padding:10px 2px 6px}
.fs-x{width:38px;height:38px;border:none;background:var(--card2);border:1px solid var(--border);border-radius:50%;font-size:18px;cursor:pointer;color:var(--muted);flex:0 0 auto}
.fs-idx{flex:1;text-align:center;font-size:13px;color:var(--muted);font-weight:600}
.fs-master{border:1px solid var(--teal);background:var(--card2);color:var(--teal-dark);border-radius:16px;padding:7px 14px;font-size:12.5px;font-weight:600;cursor:pointer}
.fs-master.on{background:var(--teal);color:#fff;border-color:var(--teal)}
.word-fs-card{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:14px;padding:10px;cursor:pointer;-webkit-tap-highlight-color:transparent}
.word-fs-word{font-size:clamp(38px,11vw,68px);font-weight:800;color:var(--primary);letter-spacing:.5px;line-height:1.1;word-break:break-word}
.word-fs-phon{font-size:17px;color:var(--text-secondary);display:inline-flex;align-items:center;gap:6px}
.fs-spk{font-size:15px;opacity:.7}
.word-fs-reveal{display:flex;flex-direction:column;gap:8px;max-width:520px}
.word-fs-pos{font-size:14px;color:var(--muted);font-style:italic}
.word-fs-mean{font-size:21px;font-weight:700;color:var(--title);line-height:1.4}
.word-fs-line{font-size:14.5px;color:var(--text-secondary);line-height:1.6}
.word-fs-line.teal{color:var(--teal-dark)}
.word-fs-ex{font-size:15px;color:var(--text);line-height:1.6;background:var(--card2);border-radius:10px;padding:10px 12px;display:inline-flex;align-items:center;gap:6px;justify-content:center}
.word-fs-hint{font-size:13px;color:var(--muted);opacity:.8}
.word-fs-bottom{display:flex;gap:6px;padding:10px 0 6px;border-top:1px solid var(--border)}
.word-fs-bottom button{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;border:none;background:var(--card2);border:1px solid var(--border);border-radius:14px;padding:10px 4px;cursor:pointer;color:var(--text);font-family:inherit;font-size:11.5px;font-weight:600;transition:.15s}
.word-fs-bottom button:active{transform:scale(.96)}
.word-fs-bottom .bi{font-size:22px;line-height:1}
.word-fs-bottom .fs-master-btn.on{background:var(--teal);border-color:var(--teal);color:#fff}
.word-fs-nav{display:flex;gap:10px;padding-bottom:4px}
.word-fs-nav button{flex:1;border:none;background:var(--teal-bg);color:var(--teal-dark);border-radius:12px;padding:11px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit}
.word-fs-nav button:active{filter:brightness(.95)}