/* ===== 宿舍管理系统 · 移动优先样式 ===== */
:root{
  --bg:#f5f6f8; --surface:#fff; --surface-2:#fafbfc; --border:#e6e8eb; --border-strong:#d3d7dd;
  --text:#11161d; --text-2:#5a6472; --text-3:#98a1ae;
  --primary:#3b5bfd; --primary-weak:#eef1ff; --primary-dark:#2942d6;
  --green:#0f9d58; --green-weak:#e6f6ee;
  --amber:#d98700; --amber-weak:#fdf3e2;
  --red:#dc3545; --red-weak:#fdecee;
  --purple:#7c4dff; --purple-weak:#f1ecff;
  --radius:14px; --radius-sm:10px;
  --shadow:0 1px 2px rgba(16,24,40,.05),0 4px 14px rgba(16,24,40,.06);
  --shadow-lg:0 10px 40px rgba(16,24,40,.16);
  --nav-h:60px;
  --safe-b:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0e1116; --surface:#171b22; --surface-2:#1d222b; --border:#282e38; --border-strong:#39414e;
    --text:#e8eaed; --text-2:#a3abb8; --text-3:#6e7885;
    --primary:#6d86ff; --primary-weak:#1c2440; --primary-dark:#8298ff;
    --green:#3ecf8e; --green-weak:#12291f;
    --amber:#f0a83c; --amber-weak:#2c2312;
    --red:#ff6b6b; --red-weak:#2e1619;
    --purple:#a78bfa; --purple-weak:#221c39;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 4px 14px rgba(0,0,0,.25);
  }
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro SC","PingFang SC","Segoe UI",Roboto,"Helvetica Neue","Noto Sans SC",sans-serif;
  background:var(--bg); color:var(--text); font-size:15px; line-height:1.55;
  -webkit-font-smoothing:antialiased; overscroll-behavior-y:none;
}
a{color:var(--primary);text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:-.01em}
.hide{display:none !important}

/* ---------- 布局 ---------- */
#app{min-height:100vh;min-height:100dvh}
.shell{display:flex;min-height:100dvh}
.sidebar{display:none}
.main{flex:1;min-width:0;padding-bottom:calc(var(--nav-h) + var(--safe-b) + 12px)}
.topbar{
  position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:10px;
  padding:12px 16px;padding-top:calc(12px + env(safe-area-inset-top,0px));
  background:color-mix(in srgb,var(--surface) 88%,transparent);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--border);
}
.topbar h1{font-size:17px;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.page{padding:14px 16px 24px;max-width:1240px;margin:0 auto;animation:fade .18s ease}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}

/* ---------- 底部导航（手机） ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:50;display:flex;
  background:color-mix(in srgb,var(--surface) 92%,transparent);
  backdrop-filter:saturate(180%) blur(16px);-webkit-backdrop-filter:saturate(180%) blur(16px);
  border-top:1px solid var(--border);padding-bottom:var(--safe-b);
}
.tabbar button{
  flex:1;background:none;border:0;padding:8px 2px 6px;display:flex;flex-direction:column;align-items:center;gap:3px;
  color:var(--text-3);font-size:10.5px;cursor:pointer;position:relative;min-height:var(--nav-h);justify-content:center;
}
.tabbar button .ic{font-size:20px;line-height:1}
.tabbar button.on{color:var(--primary);font-weight:600}
.tabbar .dot{position:absolute;top:6px;right:calc(50% - 20px);min-width:16px;height:16px;padding:0 4px;
  background:var(--red);color:#fff;border-radius:9px;font-size:10px;line-height:16px;font-weight:700}

/* ---------- 桌面：侧边栏 ---------- */
@media (min-width:900px){
  .main{padding-bottom:24px}
  .tabbar{display:none}
  .sidebar{
    display:flex;flex-direction:column;width:230px;flex-shrink:0;background:var(--surface);
    border-right:1px solid var(--border);position:sticky;top:0;height:100dvh;overflow-y:auto;
  }
  .sidebar .brand{padding:20px 18px 14px;display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px}
  .sidebar .brand .logo{width:30px;height:30px;border-radius:9px;background:var(--primary);color:#fff;
    display:grid;place-items:center;font-size:15px}
  .sidebar nav{padding:6px 10px;flex:1}
  .sidebar nav button{
    width:100%;display:flex;align-items:center;gap:10px;padding:9px 11px;margin-bottom:2px;border:0;border-radius:9px;
    background:none;color:var(--text-2);font-size:13.5px;cursor:pointer;text-align:left;position:relative;
  }
  .sidebar nav button:hover{background:var(--surface-2);color:var(--text)}
  .sidebar nav button.on{background:var(--primary-weak);color:var(--primary);font-weight:600}
  .sidebar nav button .ic{font-size:16px;width:20px;text-align:center}
  .sidebar nav button .dot{margin-left:auto;background:var(--red);color:#fff;border-radius:9px;
    font-size:10px;padding:1px 6px;font-weight:700}
  .sidebar .foot{padding:12px;border-top:1px solid var(--border)}
  .topbar{padding:16px 22px}
  .page{padding:18px 22px 40px}
}

/* ---------- 卡片 ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden}
.card+.card{margin-top:12px}
.card-h{display:flex;align-items:center;gap:8px;padding:13px 15px;border-bottom:1px solid var(--border)}
.card-h h3{font-size:14.5px;flex:1;min-width:0}
.card-b{padding:14px 15px}
.card-b.tight{padding:0}
.sec-title{font-size:12px;font-weight:700;color:var(--text-3);letter-spacing:.06em;text-transform:uppercase;
  margin:20px 2px 9px;display:flex;align-items:center;gap:8px}
.sec-title:first-child{margin-top:4px}

/* ---------- 统计块 ---------- */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
@media (min-width:640px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:13px 14px;
  box-shadow:var(--shadow)}
.stat .lbl{font-size:11.5px;color:var(--text-3);margin-bottom:5px;font-weight:500;line-height:1.3}
.stat .val{font-size:22px;font-weight:700;letter-spacing:-.02em;line-height:1.15}
.stat .sub{font-size:11.5px;color:var(--text-2);margin-top:3px}
.stat.accent{background:linear-gradient(140deg,var(--primary),var(--primary-dark));border-color:transparent;color:#fff}
.stat.accent .lbl,.stat.accent .sub{color:rgba(255,255,255,.82)}

/* ---------- 列表行 ---------- */
.rows{display:flex;flex-direction:column}
.row{display:flex;align-items:center;gap:11px;padding:12px 15px;border-bottom:1px solid var(--border);
  background:none;border-left:0;border-right:0;border-top:0;width:100%;text-align:left;cursor:pointer;color:inherit}
.row:last-child{border-bottom:0}
.row:active{background:var(--surface-2)}
.row .av{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-size:15px;
  font-weight:700;flex-shrink:0;background:var(--primary-weak);color:var(--primary)}
.row .mid{flex:1;min-width:0;overflow:hidden}
.row .t1{display:block;font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row .t2{display:block;font-size:12px;color:var(--text-2);margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row .end{text-align:right;flex-shrink:0}
.row .end{display:flex;flex-direction:column;align-items:flex-end;gap:2px;max-width:42%}
.row .end .m{display:block;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}
.row .end .s{display:block;font-size:11px;color:var(--text-3);white-space:nowrap}
.row .chev{color:var(--text-3);font-size:16px;flex-shrink:0}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:20px;font-size:11px;
  font-weight:600;white-space:nowrap;line-height:1.6}
.badge.gray{background:var(--surface-2);color:var(--text-2);border:1px solid var(--border)}
.badge.blue{background:var(--primary-weak);color:var(--primary)}
.badge.green{background:var(--green-weak);color:var(--green)}
.badge.amber{background:var(--amber-weak);color:var(--amber)}
.badge.red{background:var(--red-weak);color:var(--red)}
.badge.purple{background:var(--purple-weak);color:var(--purple)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 15px;border-radius:10px;
  border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font-size:13.5px;
  font-weight:600;cursor:pointer;transition:.12s;white-space:nowrap}
.btn:active{transform:scale(.975)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn.danger{background:var(--red);border-color:var(--red);color:#fff}
.btn.ghost{background:transparent;border-color:transparent;color:var(--primary);padding:6px 9px}
.btn.sm{padding:6px 11px;font-size:12.5px;border-radius:8px}
.btn.block{width:100%}
.btn-row{display:flex;gap:8px;flex-wrap:wrap}
.icon-btn{width:34px;height:34px;border-radius:9px;border:1px solid var(--border);background:var(--surface);
  display:grid;place-items:center;cursor:pointer;font-size:15px;flex-shrink:0;
  white-space:nowrap;overflow:hidden;line-height:1;padding:0}
.icon-btn.avatar{font-size:11.5px;font-weight:700;letter-spacing:-.02em;background:var(--primary-weak);
  color:var(--primary);border-color:transparent}

/* ---------- 表单 ---------- */
.field{margin-bottom:13px}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--text-2);margin-bottom:5px}
.field .hint{font-size:11.5px;color:var(--text-3);margin-top:4px}
input,select,textarea{
  width:100%;padding:10px 12px;border:1px solid var(--border-strong);border-radius:10px;background:var(--surface);
  font-size:16px;outline:none;transition:.12s;appearance:none
}
@media (min-width:900px){input,select,textarea{font-size:14px;padding:9px 11px}}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-weak)}
textarea{min-height:88px;resize:vertical;line-height:1.5}
select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23888' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;padding-right:32px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 11px}
@media (max-width:480px){.grid2.stack-sm{grid-template-columns:1fr}}
.checkline{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.checkline input{width:18px;height:18px;flex-shrink:0}
/* 复选框/单选框恢复系统样式（上面的 appearance:none 会让勾选状态看不见） */
input[type=checkbox],input[type=radio]{appearance:auto;-webkit-appearance:auto;width:18px;height:18px;padding:0;
  margin:0;border:0;box-shadow:none;accent-color:var(--primary);cursor:pointer}
.checkline label{margin:0;font-size:13.5px;font-weight:500;color:var(--text)}

/* ---------- 搜索/筛选 ---------- */
.toolbar{display:flex;gap:8px;margin-bottom:12px;align-items:center;flex-wrap:wrap}
.toolbar input[type=search]{flex:1;min-width:150px}
.chips{display:flex;gap:7px;overflow-x:auto;padding:2px 0 8px;margin:0 -16px 6px;padding-left:16px;padding-right:16px;
  scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{padding:6px 13px;border-radius:20px;border:1px solid var(--border-strong);background:var(--surface);
  font-size:12.5px;font-weight:600;white-space:nowrap;cursor:pointer;color:var(--text-2);flex-shrink:0}
.chip.on{background:var(--primary);border-color:var(--primary);color:#fff}

/* ---------- 弹窗 ---------- */
.mask{position:fixed;inset:0;background:rgba(10,14,20,.45);z-index:100;display:flex;align-items:flex-end;
  justify-content:center;animation:fade .15s ease;backdrop-filter:blur(2px)}
@media (min-width:640px){.mask{align-items:center;padding:20px}}
.sheet{background:var(--surface);width:100%;max-width:560px;max-height:92dvh;overflow-y:auto;
  border-radius:18px 18px 0 0;animation:up .22s cubic-bezier(.2,.9,.3,1);padding-bottom:var(--safe-b)}
@media (min-width:640px){.sheet{border-radius:16px;animation:pop .18s ease;max-height:86dvh}}
@keyframes up{from{transform:translateY(100%)}to{transform:none}}
@keyframes pop{from{transform:scale(.96);opacity:0}to{transform:none;opacity:1}}
.sheet-h{position:sticky;top:0;background:var(--surface);display:flex;align-items:center;gap:10px;
  padding:15px 17px;border-bottom:1px solid var(--border);z-index:2}
.sheet-h h3{flex:1;font-size:16px}
.sheet-b{padding:16px 17px}
.sheet-f{position:sticky;bottom:0;background:var(--surface);padding:12px 17px;border-top:1px solid var(--border);
  display:flex;gap:9px}
.sheet-f .btn{flex:1}

/* ---------- 提示 ---------- */
#toast{position:fixed;left:50%;bottom:calc(var(--nav-h) + var(--safe-b) + 18px);transform:translateX(-50%);
  z-index:200;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none;width:calc(100% - 32px);
  max-width:400px}
@media (min-width:900px){#toast{bottom:24px}}
.toast{background:#1c2230;color:#fff;padding:11px 16px;border-radius:11px;font-size:13.5px;font-weight:500;
  box-shadow:var(--shadow-lg);animation:up2 .22s ease;text-align:center;max-width:100%}
.toast.ok{background:var(--green)} .toast.err{background:var(--red)}
@keyframes up2{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ---------- 空态/加载 ---------- */
.empty{text-align:center;padding:48px 20px;color:var(--text-3)}
.empty .ic{font-size:40px;margin-bottom:10px;opacity:.55}
.empty .t{font-size:14px;font-weight:600;color:var(--text-2);margin-bottom:4px}
.empty .s{font-size:12.5px}
.spin{width:22px;height:22px;border:2.5px solid var(--border);border-top-color:var(--primary);border-radius:50%;
  animation:sp .7s linear infinite;margin:40px auto}
@keyframes sp{to{transform:rotate(360deg)}}

/* ---------- 明细表 ---------- */
.kv{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px solid var(--border);font-size:13.5px}
.kv:last-child{border-bottom:0}
.kv .k{color:var(--text-2);flex-shrink:0}
.kv .v{text-align:right;font-weight:600;word-break:break-word}
.money{font-variant-numeric:tabular-nums}
.pos{color:var(--green)} .neg{color:var(--red)} .mut{color:var(--text-2)}

/* ---------- 进度条 ---------- */
.bar{height:7px;background:var(--surface-2);border-radius:5px;overflow:hidden;border:1px solid var(--border)}
.bar>i{display:block;height:100%;background:var(--primary);border-radius:5px;transition:width .4s}
.bar>i.g{background:var(--green)} .bar>i.a{background:var(--amber)} .bar>i.r{background:var(--red)}

/* ---------- 床位网格 ---------- */
.beds{display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:9px}
.bed{border:1px solid var(--border);border-radius:11px;padding:10px 11px;background:var(--surface-2);cursor:pointer;
  text-align:left;color:inherit}
.bed.occ{background:var(--primary-weak);border-color:color-mix(in srgb,var(--primary) 32%,transparent)}
.bed .bl{font-size:11px;color:var(--text-3);font-weight:700;letter-spacing:.04em}
.bed .bn{font-size:13px;font-weight:650;margin-top:3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bed .bs{font-size:11px;color:var(--text-2);margin-top:2px}

/* ---------- 迷你柱状图 ---------- */
.chart{display:flex;align-items:flex-end;gap:7px;padding:6px 2px 0}
.chart .col{flex:1;display:flex;flex-direction:column;align-items:center;gap:5px;min-width:0}
.chart .stack{width:100%;display:flex;flex-direction:column-reverse;justify-content:flex-start;gap:2px}
.chart .b1{background:var(--primary);border-radius:4px 4px 0 0;min-height:2px;transition:height .4s}
.chart .b2{background:var(--amber);border-radius:4px 4px 0 0;min-height:0;transition:height .4s;opacity:.85}
.chart .lb{font-size:10px;color:var(--text-3);white-space:nowrap}
.legend{display:flex;gap:14px;font-size:11.5px;color:var(--text-2);margin-top:10px;flex-wrap:wrap}
.legend i{display:inline-block;width:9px;height:9px;border-radius:3px;margin-right:5px;vertical-align:-1px}

/* ---------- 时间线 ---------- */
.timeline{padding-left:6px}
.tl{display:flex;gap:11px;padding-bottom:14px;position:relative}
.tl:not(:last-child)::before{content:'';position:absolute;left:5px;top:16px;bottom:0;width:1.5px;background:var(--border)}
.tl .pt{width:11px;height:11px;border-radius:50%;background:var(--primary);margin-top:5px;flex-shrink:0;z-index:1;
  box-shadow:0 0 0 3px var(--surface)}
.tl .ct{flex:1;min-width:0}
.tl .ca{font-size:12.5px;font-weight:650}
.tl .cn{font-size:12.5px;color:var(--text-2);margin-top:2px;white-space:pre-wrap;word-break:break-word}
.tl .cd{font-size:11px;color:var(--text-3);margin-top:3px}

/* ---------- 登录 ---------- */
.login-wrap{min-height:100dvh;display:flex;flex-direction:column;justify-content:center;align-items:center;
  padding:28px 20px calc(28px + var(--safe-b));background:
  radial-gradient(1000px 520px at 50% -12%,var(--primary-weak),transparent 70%),var(--bg)}
.login-card{width:100%;max-width:392px;background:var(--surface);border:1px solid var(--border);
  border-radius:20px;box-shadow:var(--shadow-lg);padding:28px 24px}
.login-logo{width:56px;height:56px;border-radius:17px;background:linear-gradient(140deg,var(--primary),var(--purple));
  display:grid;place-items:center;font-size:27px;margin:0 auto 15px;box-shadow:0 8px 22px color-mix(in srgb,var(--primary) 32%,transparent)}
.login-logo.img{display:block;width:68px;height:68px;border-radius:50%;margin:0 auto 14px;background:none;object-fit:cover}
.login-card h2{text-align:center;font-size:19px;margin-bottom:5px}
.login-card .sub{text-align:center;color:var(--text-2);font-size:13px;margin-bottom:22px}
.demo-box{margin-top:18px;padding:12px 13px;background:var(--surface-2);border:1px dashed var(--border-strong);
  border-radius:11px;font-size:11.5px;color:var(--text-2);line-height:1.75}
.demo-box b{color:var(--text)}
.demo-box code{display:inline-block;white-space:nowrap;max-width:100%;overflow:hidden;text-overflow:ellipsis;vertical-align:middle;
  background:var(--surface);padding:1px 5px;border-radius:4px;font-size:11px;
  border:1px solid var(--border);cursor:pointer}

/* ---------- 销售角色：只看不改 ---------- */
body[data-role="sales"] .sales-hide{display:none !important}

/* ---------- 语言切换 ---------- */
.lang{display:inline-flex;border:1px solid var(--border-strong);border-radius:8px;overflow:hidden;flex-shrink:0}
.lang button{padding:5px 9px;background:var(--surface);border:0;font-size:11.5px;font-weight:700;cursor:pointer;
  color:var(--text-3)}
.lang button.on{background:var(--primary);color:#fff}

/* ---------- 图片 ---------- */
.thumbs{display:flex;gap:8px;flex-wrap:wrap;margin-top:9px}
.thumbs img{width:74px;height:74px;object-fit:cover;border-radius:9px;border:1px solid var(--border);cursor:pointer}
.file-drop{border:1.5px dashed var(--border-strong);border-radius:11px;padding:18px;text-align:center;
  color:var(--text-3);font-size:12.5px;cursor:pointer;background:var(--surface-2)}
.file-drop.has{border-color:var(--primary);color:var(--primary);background:var(--primary-weak)}

/* ---------- 表格（桌面） ---------- */
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.tbl{width:100%;border-collapse:collapse;font-size:13px;min-width:520px}
table.tbl th{text-align:left;padding:9px 12px;font-size:11.5px;color:var(--text-3);font-weight:700;
  border-bottom:1px solid var(--border);text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}
table.tbl td{padding:10px 12px;border-bottom:1px solid var(--border);vertical-align:middle}
table.tbl tr:last-child td{border-bottom:0}
table.tbl td.num{text-align:right;font-variant-numeric:tabular-nums;font-weight:600}

/* ===== AI 助手 ===== */
.ai-fab{position:fixed;right:16px;bottom:calc(var(--nav-h) + 16px + var(--safe-b));z-index:60;width:52px;height:52px;border-radius:50%;border:0;
  background:linear-gradient(135deg,var(--primary),var(--purple));color:#fff;font-size:22px;box-shadow:var(--shadow-lg);cursor:pointer}
.ai-fab:active{transform:scale(.95)}
@media (min-width:900px){.ai-fab{right:24px;bottom:24px}}
.ai-panel{position:fixed;inset:0;z-index:120;background:var(--bg);display:flex;flex-direction:column;transform:translateY(100%);transition:transform .25s ease}
.ai-panel.on{transform:none}
@media (min-width:900px){.ai-panel{left:auto;width:460px;border-left:1px solid var(--border);box-shadow:var(--shadow-lg);transform:translateX(100%)}}
.ai-head{display:flex;align-items:center;gap:6px;padding:12px 12px 12px 16px;padding-top:calc(12px + env(safe-area-inset-top,0px));background:var(--surface);border-bottom:1px solid var(--border)}
.ai-head .ai-t{font-weight:700;font-size:15px}.ai-head .ai-s{font-size:11px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ai-msgs{flex:1;overflow:auto;padding:14px 14px 6px;display:flex;flex-direction:column;gap:10px;-webkit-overflow-scrolling:touch}
.ai-b{max-width:88%;padding:10px 13px;border-radius:16px;font-size:14px;line-height:1.55;word-break:break-word}
.ai-b.u{align-self:flex-end;background:var(--primary);color:#fff;border-bottom-right-radius:6px;white-space:pre-wrap}
.ai-b.a{align-self:flex-start;background:var(--surface);border:1px solid var(--border);border-bottom-left-radius:6px}
.ai-b.e{align-self:flex-start;background:var(--red-weak);color:var(--red)}
.ai-b p{margin:0 0 3px}.ai-b .gap{height:6px}.ai-b ul,.ai-b ol{margin:4px 0 6px 18px;padding:0}.ai-b li{margin:2px 0}.ai-b .h{font-weight:700;margin:6px 0 2px}
.ai-b code{background:var(--surface-2);padding:1px 5px;border-radius:5px;font-size:12.5px}
.ai-b pre{background:var(--surface-2);padding:8px 10px;border-radius:8px;font-size:12px;overflow:auto;margin:6px 0}
.ai-tblw{overflow:auto;margin:6px -4px}.ai-tbl{border-collapse:collapse;font-size:12.5px;white-space:nowrap}
.ai-tbl th,.ai-tbl td{border:1px solid var(--border);padding:4px 8px;text-align:left}.ai-tbl th{background:var(--surface-2);font-weight:600}
.ai-tools{font-size:11px;color:var(--text-3);margin-top:6px}
.ai-typing{display:inline-flex;gap:4px;padding:4px 2px}.ai-typing i{width:6px;height:6px;border-radius:50%;background:var(--text-3);animation:aib 1s infinite}
.ai-typing i:nth-child(2){animation-delay:.2s}.ai-typing i:nth-child(3){animation-delay:.4s}
@keyframes aib{0%,80%,100%{opacity:.25}40%{opacity:1}}
.ai-sugg{display:flex;flex-wrap:wrap;gap:8px;padding:6px 14px 10px}
.ai-sugg-t{width:100%;font-size:11.5px;color:var(--text-3)}
.ai-chip{border:1px solid var(--border-strong);background:var(--surface);border-radius:999px;padding:7px 12px;font-size:12.5px;color:var(--text-2);cursor:pointer;text-align:left;font-family:inherit}
.ai-chip:active{background:var(--primary-weak)}
.ai-in{display:flex;gap:8px;align-items:flex-end;padding:10px 12px;padding-bottom:calc(10px + var(--safe-b));background:var(--surface);border-top:1px solid var(--border)}
.ai-in textarea{flex:1;resize:none;min-height:42px;height:42px;max-height:120px;border:1px solid var(--border-strong);border-radius:14px;padding:10px 12px;font:inherit;font-size:14px;line-height:1.4;background:var(--bg);color:var(--text)}
.ai-in textarea:focus{outline:none;border-color:var(--primary)}
.ai-in button[data-send]{width:44px;height:42px;border:0;border-radius:12px;background:var(--primary);color:#fff;font-size:18px;cursor:pointer}
.ai-in button:disabled{opacity:.5}

/* ===== 使用手册 ===== */
.help-top{margin-bottom:10px}.help-top input{width:100%}
.help-toc{display:flex;gap:6px;overflow-x:auto;padding-bottom:8px;margin-bottom:4px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.help-toc::-webkit-scrollbar{display:none}
.help-chip{flex:0 0 auto;border:1px solid var(--border-strong);background:var(--surface);border-radius:999px;padding:6px 11px;font-size:12.5px;color:var(--text-2);text-decoration:none;white-space:nowrap}
.help-body{font-size:14px;line-height:1.65;color:var(--text)}
.help-body p{margin:0 0 8px}.help-body h4{font-size:13px;margin:12px 0 6px;color:var(--text-2);text-transform:none}
.help-body h4:first-child{margin-top:0}
.help-steps,.help-list{margin:2px 0 8px 20px;padding:0}.help-steps li,.help-list li{margin:5px 0}
.help-tips{margin-top:6px}.help-tip{background:var(--amber-weak);border-radius:10px;padding:8px 10px;font-size:13px;margin:6px 0;line-height:1.5}
.help-faq{margin:8px 0 10px}.help-faq .q{font-weight:650}.help-faq .a{color:var(--text-2);font-size:13.5px;margin-top:2px}
.help-tbl{white-space:normal;min-width:100%}.help-tbl td{vertical-align:top;font-size:12.5px}
.help-sec{scroll-margin-top:70px}
mark{background:#ffe98a;color:inherit;padding:0 2px;border-radius:3px}
@media (prefers-color-scheme:dark){mark{background:#7a6400;color:#fff}}