* { margin:0; padding:0; box-sizing:border-box; }
:root{
  --primary:#4f6ef7; --bec:#4f6ef7; --preg:#ef6aa0; --travel:#23b394;
  --bg:#f4f6fb; --card:#fff; --line:#e8ecf3; --txt:#1d2433; --sub:#667085; --faint:#98a2b3;
  --ok:#16a34a; --warn:#f59e0b; --bad:#e5484d;
  --radius:14px;
}
body{ font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif; background:var(--bg); color:var(--txt); font-size:14px; }
#app{ display:flex; flex-direction:column; min-height:100vh; }

/* ===== 全局移动端布局（唯一生效的布局，无桌面分支） ===== */
#sidebar{ display:none !important; flex:none !important; width:0 !important; min-width:0 !important; overflow:hidden !important; }
.topbar{ display:flex !important; align-items:center; gap:12px; position:sticky; top:0; z-index:120;
  background:linear-gradient(135deg,#1a2138,#2a3358); color:#fff; padding:11px 14px; box-shadow:0 2px 10px rgba(0,0,0,.2); width:100%; flex:none; }
.topbar .ham{ font-size:22px; cursor:pointer; line-height:1; }
.topbar b{ font-size:15px; font-weight:700; }
.topbar small{ color:#aab4cc; font-size:11px; margin-left:6px; }
.scrim{ display:block; position:fixed; inset:0; background:rgba(10,15,30,.45); z-index:125; opacity:0; pointer-events:none; transition:opacity .2s; }
.scrim.show{ opacity:1; pointer-events:auto; }
#botnav{ display:flex !important; position:fixed; left:0; right:0; bottom:0; z-index:130;
  background:rgba(255,255,255,.94); backdrop-filter:saturate(180%) blur(10px);
  border-top:1px solid var(--line); padding:6px 2px calc(6px + env(safe-area-inset-bottom)); }
#botnav .bn-item{ flex:1; display:flex; flex-direction:column; align-items:center; gap:2px; padding:4px 0; cursor:pointer; color:var(--sub); font-size:11px; line-height:1.2; }
#botnav .bn-ic{ width:30px; height:30px; border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:14px; font-weight:700; color:#fff; }
#botnav .bn-item.active{ color:var(--primary); }
#botnav .bn-item.active .bn-ic{ box-shadow:0 0 0 2px var(--primary); transform:translateY(-1px); }
#main{ width:100% !important; max-width:100% !important; padding:16px 14px 92px !important; flex:1 1 0% !important; }
.grid2,.grid3,.grid4{ grid-template-columns:1fr !important; }
th,td{ white-space:normal !important; word-break:break-word !important; }
table{ font-size:12px !important; }
html,body{ overflow-x:hidden; max-width:100vw; }

/* 桌面端增强（仅在大屏上微调内边距和网格，绝不显示侧边栏） */
@media (min-width:9999px){
  #main{ padding:26px 30px 60px !important; max-width:1080px !important; margin:0 auto; }
  .grid2{ grid-template-columns:1fr 1fr !important; }
  .grid3{ grid-template-columns:repeat(3,1fr) !important; }
  .grid4{ grid-template-columns:repeat(4,1fr) !important; }
  th{ white-space:nowrap !important; }
  table{ font-size:12.8px !important; }
}

/* ============ 侧边栏（移动端抽屉形式按需滑出） ============ */
#sidebar.open{ display:flex !important; position:fixed !important; top:0; left:0; width:280px; max-width:85vw; height:100vh; z-index:130;
  background:linear-gradient(180deg,#1a2138 0%,#151b2e 100%); color:#cdd5e4; flex-direction:column;
  transform:translateX(0); transition:transform .25s ease; box-shadow:0 0 40px rgba(0,0,0,.5); overflow-y:auto; }
#sidebar::-webkit-scrollbar{ width:4px; } #sidebar::-webkit-scrollbar-thumb{ background:#33405e; border-radius:4px; }
.side-logo{ padding:20px 18px 14px; display:flex; align-items:center; gap:10px; border-bottom:1px solid rgba(255,255,255,.06); }
.side-logo .lg{ width:36px; height:36px; border-radius:10px; background:linear-gradient(135deg,#4f6ef7,#7c5cf0); display:flex; align-items:center; justify-content:center; color:#fff; font-weight:700; font-size:15px; }
.side-logo b{ color:#fff; font-size:15px; display:block; }
.side-logo small{ color:#8b96ad; font-size:11px; }
.menu{ padding:10px 10px 24px; }
.m-item{ display:flex; align-items:center; gap:10px; padding:11px 12px; border-radius:9px; cursor:pointer; color:#cdd5e4; margin-top:2px; user-select:none; transition:background .15s; }
.m-item:hover{ background:rgba(255,255,255,.06); }
.m-item.active{ background:var(--primary); color:#fff; }
.m-item .badge-ic{ width:24px; height:24px; border-radius:7px; display:flex; align-items:center; justify-content:center; font-size:12px; font-weight:700; color:#fff; flex:none; }
.m-item .cap{ flex:1; font-size:13.5px; }
.m-item .arr{ font-size:10px; color:#8b96ad; transition:transform .2s; }
.m-item.open .arr{ transform:rotate(90deg); }
.subs{ overflow:hidden; max-height:0; transition:max-height .25s ease; }
.subs.open{ max-height:2000px; }
.s-item{ display:flex; align-items:center; gap:8px; padding:8px 10px 8px 46px; font-size:12.8px; color:#9aa6bd; border-radius:8px; cursor:pointer; margin-top:1px; }
.s-item:hover{ color:#fff; background:rgba(255,255,255,.05); }
.s-item.active{ color:#fff; background:rgba(79,110,247,.28); }
.s-item .dot{ width:5px; height:5px; border-radius:50%; background:currentColor; opacity:.6; flex:none; }

/* ============ 主区域 ============ */
#main{ flex:1; padding:16px 14px 92px; max-width:100%; }
.page-h{ margin-bottom:18px; }
.page-h h1{ font-size:21px; font-weight:700; }
.page-h p{ color:var(--sub); margin-top:5px; font-size:13px; }
.crumb{ font-size:12px; color:var(--faint); margin-bottom:6px; }

.card{ background:var(--card); border:1px solid var(--line); border-radius:var(--radius); padding:18px 20px; margin-bottom:16px; box-shadow:0 1px 3px rgba(16,24,40,.04); }
.card h3{ font-size:15px; margin-bottom:12px; display:flex; align-items:center; gap:8px; }
.card h3 .tag{ font-weight:400; }
.grid2{ display:grid; grid-template-columns:1fr; gap:16px; }
.grid3{ display:grid; grid-template-columns:1fr; gap:14px; }
.grid4{ display:grid; grid-template-columns:1fr; gap:12px; }

.stat{ background:var(--card); border:1px solid var(--line); border-radius:var(--radius); padding:15px 16px; }
.stat .v{ font-size:23px; font-weight:700; margin-top:4px; }
.stat .k{ color:var(--sub); font-size:12px; }
.stat .m{ font-size:11px; color:var(--faint); margin-top:4px; }

button,.btn{ background:var(--primary); color:#fff; border:none; padding:8px 16px; border-radius:8px; cursor:pointer; font-size:13px; font-family:inherit; }
button:hover{ opacity:.9; }
.btn-o{ background:#fff; color:var(--txt); border:1px solid #d5dbe7; }
.btn-sm{ padding:4px 10px; font-size:12px; border-radius:6px; }
.btn-red{ background:#fef1f1; color:var(--bad); border:1px solid #f7caca; }
.btn-green{ background:#eefbf2; color:var(--ok); border:1px solid #c3ecd0; }

input,select,textarea{ font-family:inherit; font-size:13px; padding:8px 10px; border:1px solid #d5dbe7; border-radius:8px; background:#fff; color:var(--txt); outline:none; width:100%; }
input:focus,select:focus,textarea:focus{ border-color:var(--primary); }
textarea{ resize:vertical; min-height:70px; }
label.f{ display:block; font-size:12px; color:var(--sub); margin:10px 0 4px; }
.frow{ display:flex; gap:10px; align-items:flex-end; flex-wrap:wrap; }
.frow>div{ flex:1; min-width:130px; }

/* 任务勾选 */
.task{ display:flex; align-items:center; gap:12px; padding:12px 14px; border:1px solid var(--line); border-radius:var(--radius); margin-bottom:9px; background:var(--card); transition:all .15s; }
.task.done{ background:#f2fbf5; border-color:#c3ecd0; }
.task.overdue{ border-color:#f7caca; background:#fffafa; }
.task input[type=checkbox]{ width:19px; height:19px; accent-color:var(--ok); flex:none; cursor:pointer; }
.task .t-main{ flex:1; }
.task .t-main b{ font-size:13.5px; }
.task .t-main small{ display:block; color:var(--faint); font-size:11.5px; margin-top:2px; }
.task .t-tag{ font-size:11px; padding:2px 8px; border-radius:20px; flex:none; }

.tag{ display:inline-block; font-size:11px; padding:2px 9px; border-radius:20px; }
.tag-blue{ background:#eef2ff; color:var(--bec); }
.tag-pink{ background:#fdeef4; color:var(--preg); }
.tag-green{ background:#e9f9f4; color:var(--travel); }
.tag-ok{ background:#eefbf2; color:var(--ok); }
.tag-warn{ background:#fff7e8; color:#b46c09; }
.tag-bad{ background:#fef1f1; color:var(--bad); }
.tag-gray{ background:#f1f3f8; color:var(--sub); }

/* 表格 */
table{ width:100%; border-collapse:collapse; font-size:12px; }
th{ text-align:left; color:var(--sub); font-weight:500; padding:8px 10px; border-bottom:1px solid var(--line); font-size:12px; white-space:normal; }
td{ padding:9px 10px; border-bottom:1px solid #f1f3f8; vertical-align:top; }
tr:hover td{ background:#fafbfe; }

/* 图表 */
.chart{ width:100%; height:auto; display:block; }
.empty{ color:var(--faint); text-align:center; padding:26px 0; font-size:12.5px; }

/* 打卡热力点 */
.dots{ display:flex; gap:4px; flex-wrap:wrap; margin-top:6px; }
.dots i{ width:14px; height:14px; border-radius:4px; background:#e9edf5; }
.dots i.on{ background:var(--ok); }
.dots i.off{ background:#f3d1d1; }
.dots i.today{ outline:2px solid var(--primary); outline-offset:1px; }

/* 进度条 */
.pbar{ height:8px; background:#edf0f7; border-radius:6px; overflow:hidden; }
.pbar>i{ display:block; height:100%; background:var(--primary); border-radius:6px; transition:width .3s; }

/* 弹窗 */
.mask{ position:fixed; inset:0; background:rgba(15,23,42,.45); display:flex; align-items:center; justify-content:center; z-index:100; padding:20px; }
.modal{ background:var(--card); border-radius:var(--radius); width:560px; max-width:96vw; max-height:86vh; display:flex; flex-direction:column; overflow:hidden; }
.modal.wide{ width:760px; }
.modal-h{ padding:15px 20px; border-bottom:1px solid var(--line); display:flex; justify-content:space-between; align-items:center; }
.modal-h .x{ cursor:pointer; font-size:20px; color:var(--faint); line-height:1; }
.modal-b{ padding:18px 20px; overflow-y:auto; }
.modal-b pre{ white-space:pre-wrap; font-family:inherit; font-size:13px; line-height:1.8; background:#f8fafc; padding:14px; border-radius:10px; }

/* toast */
#toast-root{ position:fixed; top:20px; left:50%; transform:translateX(-50%); z-index:200; display:flex; flex-direction:column; gap:8px; }
.toast{ background:#1d2433; color:#fff; padding:9px 18px; border-radius:9px; font-size:13px; box-shadow:0 6px 20px rgba(0,0,0,.2); animation:tin .25s; }
@keyframes tin{ from{ opacity:0; transform:translateY(-8px);} }

/* 倒计时卡 */
.cd{ border-radius:var(--radius); padding:15px 16px; color:#fff; }
.cd .n{ font-size:26px; font-weight:800; }
.cd .t{ font-size:12px; opacity:.85; }

.list-item{ padding:12px 0; border-bottom:1px solid #f1f3f8; }
.list-item:last-child{ border-bottom:none; }
.muted{ color:var(--faint); font-size:12px; }
.hr{ border:none; border-top:1px dashed var(--line); margin:13px 0; }
.chips{ display:flex; gap:7px; flex-wrap:wrap; }
.chip{ font-size:12px; padding:4px 12px; border-radius:20px; background:#f1f3f8; cursor:pointer; border:1px solid transparent; }
.chip.on{ background:#eef2ff; color:var(--primary); border-color:#c3cffc; }
.photo-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(110px,1fr)); gap:10px; }
.photo-grid .ph{ position:relative; border-radius:10px; overflow:hidden; aspect-ratio:1; background:#eef1f7; }
.photo-grid img,.photo-grid video{ width:100%; height:100%; object-fit:cover; display:block; }
.photo-grid .del{ position:absolute; top:5px; right:5px; background:rgba(0,0,0,.5); color:#fff; border-radius:6px; width:20px; height:20px; display:flex; align-items:center; justify-content:center; cursor:pointer; font-size:12px; }
audio{ width:100%; margin-top:6px; }
.ring-wrap{ display:flex; align-items:center; gap:18px; }
.week-plan td{ font-size:12.3px; }
.phase{ border:1px solid var(--line); border-radius:var(--radius); padding:13px 14px; }
.phase.cur{ border-color:var(--primary); background:#f6f8ff; }
.phase .ph-t{ font-weight:700; font-size:13px; }
.phase .ph-d{ font-size:11.5px; color:var(--faint); margin:4px 0 8px; }

/* 每日素材：单词卡 & 视频播放器 */
.wgrid{ display:grid; grid-template-columns:1fr; gap:12px; }
.wcard{ border:1px solid var(--line); border-radius:var(--radius); padding:13px 14px; background:var(--card); }
.wc-top{ display:flex; align-items:center; gap:8px; }
.wc-w{ font-size:15px; font-weight:700; color:var(--txt); }
.wc-pos{ font-size:11px; color:var(--faint); }
.spk{ margin-left:auto; border:none; background:#eef2ff; color:var(--bec); width:30px; height:30px; border-radius:8px; cursor:pointer; font-size:14px; flex:none; }
.spk:active{ transform:scale(.92); }
.wc-phon{ font-size:12px; color:var(--sub); margin-top:3px; }
.wc-zh{ font-size:13px; margin-top:5px; }
.wc-cat{ font-size:10px; color:var(--faint); background:#f1f3f8; padding:1px 7px; border-radius:10px; margin-left:4px; }
.wc-ex{ margin-top:7px; font-size:12px; line-height:1.6; }
.wc-en{ display:block; color:var(--sub); }
.wc-exzh{ display:block; color:var(--faint); }
.wc-act{ display:flex; gap:8px; margin-top:10px; }
.yt-wrap{ position:relative; width:100%; padding-top:56.25%; background:#000; border-radius:var(--radius); overflow:hidden; }
.yt-wrap iframe{ position:absolute; inset:0; width:100%; height:100%; border:0; }

/* ============ 编辑模式 ============ */
[contenteditable]{ outline:2px dashed var(--primary); border-radius:6px; padding:2px 4px; background:rgba(79,110,247,.04); }
body.editing .card{ border-color:var(--primary); border-style:dashed; }
body.editing .card h3::after{ content:' ✏️'; font-size:11px; opacity:.5; }

/* ============ 暗色模式（由 JS 切换 body.dark） ============ */
body.dark #botnav{ background:rgba(28,34,48,.95); border-top-color:var(--line); }
body.dark input,body.dark select,body.dark textarea{ background:#11151f; border-color:var(--line); color:var(--txt); }
body.dark .modal-b pre{ background:#11151f; }
body.dark .mask{ background:rgba(0,0,0,.6); }
body.dark .wcard{ background:var(--card); }
body.dark .spk{ background:#2a3358; color:#aebfff; }
body.dark .wc-cat{ background:#222a3d; }

/* ============ 添加到主屏引导 ============ */
.install-guide{ display:none; position:fixed; inset:0; z-index:250; background:rgba(0,0,0,.55); align-items:center; justify-content:center; padding:20px; }
.install-guide.show{ display:flex; }
.install-guide .ig-card{ background:#fff; border-radius:16px; padding:24px 20px; max-width:340px; width:100%; }
.install-guide .ig-card h3{ font-size:17px; margin-bottom:12px; display:block; }
.install-guide .ig-card ol{ padding-left:18px; font-size:13.5px; line-height:1.8; color:var(--txt); }
.install-guide .ig-card li{ margin-bottom:6px; }
.install-guide .ig-card .ig-close{ display:block; margin-top:16px; width:100%; text-align:center; background:var(--primary); color:#fff; border:0; padding:10px; border-radius:10px; font-size:14px; font-weight:700; }