/* 每日小考 · 样式表（无外部依赖，内网可用） */
:root{
  --bg:#f4f6f9; --surface:#fff; --ink:#1d2b3e; --ink-2:#3c4a5e; --muted:#77859a;
  --line:#e4e9f0; --line-2:#eef2f7;
  --brand:#1b3a63; --brand-2:#2a5688; --brand-soft:#eaf0f8; --accent:#b5894b;
  --ok:#16805a; --ok-soft:#e7f5ee; --no:#c33c31; --no-soft:#fcecea;
  --warn:#b4771c; --warn-soft:#fff5e3;
  --shadow:0 2px 14px rgba(25,48,82,.055); --shadow-lg:0 12px 40px rgba(20,40,70,.16);
  --r:12px; --r-sm:8px;
  --serif:"Noto Serif SC","Songti SC","STSong","SimSun",Georgia,serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}
a{color:var(--brand-2);text-decoration:none}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:650}
p{margin:0 0 .7em}
p:last-child{margin-bottom:0}
small{font-size:12px}
code{background:var(--line-2);padding:1px 5px;border-radius:4px;font-size:12px;font-family:ui-monospace,Consolas,monospace}
.mono{font-family:ui-monospace,Consolas,monospace}
.muted{color:var(--muted)}
.small{font-size:12.5px}
.ok{color:var(--ok)!important}.no{color:var(--no)!important}
.block{display:block}.nowrap{white-space:nowrap}.spacer{flex:1}
.pad{padding:18px}.pad-h{padding:0 20px 4px}
.grow{flex:1;min-width:140px}
[hidden]{display:none!important}

/* ---------- 顶部导航 ---------- */
.topbar{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.topbar-inner{max-width:1240px;margin:0 auto;padding:0 22px;height:66px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex-shrink:0}
.brand:hover{color:var(--ink)}
.brand-mark{display:flex;align-items:center}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-family:var(--serif);font-size:18px;letter-spacing:.06em}
.brand-text small{color:var(--muted);font-size:11px;letter-spacing:.08em;margin-top:3px}
.mainnav{display:flex;align-items:center;gap:2px;flex:1;overflow-x:auto;scrollbar-width:none}
.mainnav::-webkit-scrollbar{display:none}
.mainnav a{position:relative;padding:22px 12px;color:var(--ink-2);font-size:14px;white-space:nowrap;transition:color .15s}
.mainnav a:hover{color:var(--brand)}
.mainnav a.active{color:var(--brand);font-weight:600}
.mainnav a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:3px;background:var(--brand);border-radius:3px 3px 0 0}
.userbox{display:flex;align-items:center;gap:12px;flex-shrink:0}
.userchip{display:flex;align-items:center;gap:8px}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-size:14px;font-weight:700}
.uname{font-size:13px;line-height:1.25;font-weight:600;white-space:nowrap}
.icon-link{font-size:12.5px;color:var(--muted)}
.icon-link:hover{color:var(--no)}

/* ---------- 布局 ---------- */
.container{max-width:1240px;margin:0 auto;padding:26px 22px 60px;min-height:calc(100vh - 130px)}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:2px 0 20px;flex-wrap:wrap}
.page-head h1{font-family:var(--serif);font-size:25px;letter-spacing:.02em}
.page-head p{color:var(--muted);font-size:13px;margin:5px 0 0}
.page-actions{display:flex;gap:8px;flex-wrap:wrap}
.section-title{display:flex;align-items:baseline;gap:10px;margin:28px 0 14px}
.section-title h2{font-family:var(--serif);font-size:19px}
.section-title span{color:var(--muted);font-size:12.5px}
.footer{border-top:1px solid var(--line);padding:18px 22px;display:flex;justify-content:space-between;max-width:1240px;margin:0 auto;color:var(--muted);font-size:12px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:20px;margin-bottom:18px;min-width:0}
.card-narrow{max-width:620px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.card-head h3{font-size:15.5px;font-weight:650}
.card-head a{font-size:12.5px}
.stack{display:flex;flex-direction:column;gap:0}
.stack .card{margin-bottom:18px}
.admin-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:18px}
.admin-grid-2{grid-template-columns:1fr 1fr}
.admin-grid-form{grid-template-columns:1.15fr 1fr}
.home-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:18px;align-items:start}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;border-radius:var(--r-sm);border:1px solid transparent;font-size:13.5px;font-weight:550;cursor:pointer;background:var(--line-2);color:var(--ink-2);transition:all .16s;white-space:nowrap;font-family:inherit;line-height:1.5;touch-action:manipulation}
.btn:hover{transform:translateY(-1px);box-shadow:0 3px 10px rgba(25,48,82,.1)}
.btn:active{transform:none}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-2);color:#fff}
.btn-outline{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-2)}
.btn-ghost:hover{border-color:var(--brand-2);color:var(--brand)}
.btn-danger{background:#fff;border-color:#f0c9c5;color:var(--no)}
.btn-danger:hover{background:var(--no-soft);color:var(--no)}
.btn-lg{padding:12px 26px;font-size:15px}
.btn-sm{padding:6px 11px;font-size:12.5px}
.btn-block{width:100%}
.inline-form{display:inline-flex;align-items:center;gap:6px;margin:0}
.row-actions{display:flex;align-items:center;gap:6px;flex-wrap:wrap}

/* ---------- 徽标 / 提示 ---------- */
.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:11.5px;font-weight:600;line-height:1.6;white-space:nowrap}
.badge-brand{background:var(--brand-soft);color:var(--brand)}
.badge-success{background:var(--ok-soft);color:var(--ok)}
.badge-danger{background:var(--no-soft);color:var(--no)}
.badge-warning{background:var(--warn-soft);color:var(--warn)}
.badge-muted{background:var(--line-2);color:var(--muted)}
.badge-lg{font-size:13px;padding:5px 14px}
.alert{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-radius:var(--r-sm);margin-bottom:18px;font-size:13.5px;border:1px solid transparent}
.alert a{font-weight:600;text-decoration:underline}
.alert-success{background:var(--ok-soft);color:#146a4b;border-color:#cbe9db}
.alert-error{background:var(--no-soft);color:#a53026;border-color:#f3d1cd}
.alert-warning{background:var(--warn-soft);color:#96631a;border-color:#f2e1bd}
.alert-close{border:0;background:transparent;font-size:20px;line-height:1;cursor:pointer;color:inherit;opacity:.6}
.ongoing-card{display:flex;align-items:center;gap:14px;padding:16px 18px;border-left:3px solid var(--warn);background:#fffdf8}
.ongoing-card.is-stale{border-left-color:var(--line);background:var(--surface)}
.ongoing-icon{width:38px;height:38px;border-radius:10px;background:var(--warn-soft);color:var(--warn);display:grid;place-items:center;flex-shrink:0}
.ongoing-card.is-stale .ongoing-icon{background:var(--line-2);color:var(--muted)}
.ongoing-body{flex:1;min-width:0}
.ongoing-head{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.ongoing-head h2{font-size:15.5px}
.ongoing-meta{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin:6px 0 3px;font-size:12.5px;color:var(--ink-2)}
.ongoing-meta .dot{color:var(--muted)}
.ongoing-tip{margin:0;font-size:12px;color:var(--muted)}
.ongoing-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}
.hint{font-size:12px;color:var(--muted);margin:8px 0 0;line-height:1.7}
.hint.danger{color:var(--no)}
.empty-state{text-align:center;padding:46px 20px;color:var(--muted)}
.empty-state .empty-icon{font-size:38px;margin-bottom:10px;opacity:.75}
.empty-state h2{font-size:18px;color:var(--ink);margin-bottom:8px;font-family:var(--serif)}
.empty-state p{margin-bottom:18px;font-size:13.5px}
.empty-sm{padding:26px 16px}

/* ---------- 表单 ---------- */
.form{display:flex;flex-direction:column;gap:14px}
.form-compact{gap:12px}
.field{display:flex;flex-direction:column;gap:6px;font-size:12.5px;color:var(--ink-2);font-weight:550;min-width:0}
.field>span{display:block}
.input, .field input:not([type=checkbox]):not([type=file]), .field select, .field textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;color:var(--ink);font-size:14px;font-family:inherit;outline:none;transition:border-color .15s,box-shadow .15s}
.field textarea, textarea.input{resize:vertical;line-height:1.6}
.input:focus, .field input:focus, .field select:focus, .field textarea:focus{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(42,86,136,.1)}
.file-input{padding:7px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-row-3{grid-template-columns:repeat(3,1fr)}
.form-actions{display:flex;align-items:center;gap:10px;margin-top:4px}
.checkbox-field{justify-content:flex-end}
.check{display:inline-flex;align-items:center;gap:7px;cursor:pointer;font-size:12.5px;color:var(--ink-2);font-weight:400;white-space:nowrap}
.check input{width:15px;height:15px;accent-color:var(--brand);cursor:pointer;margin:0}
.filter-bar{padding:14px 18px}
.filter-form{display:flex;align-items:flex-end;gap:12px;flex-wrap:wrap}
.filter-form label{display:flex;flex-direction:column;gap:5px;font-size:12px;color:var(--muted);font-weight:550}
.filter-form .input{min-width:140px}

/* ---------- 表格 ---------- */
.table-card{padding:0;overflow:hidden}
.table-card .card-head{padding:18px 20px 14px;margin:0;border-bottom:1px solid var(--line-2)}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.table{width:100%;border-collapse:collapse;font-size:13.5px}
.table th,.table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line-2);vertical-align:middle}
.table thead th{background:#fafbfd;color:var(--muted);font-size:12px;font-weight:600;white-space:nowrap;letter-spacing:.02em}
.table tbody tr:last-child td{border-bottom:0}
.table tbody tr:hover{background:#fafcff}
.table tbody th{color:var(--muted);font-weight:600}
.table-sm th,.table-sm td{padding:9px 14px}
.row-today{background:#fbfcfe}
.row-me{background:var(--brand-soft)}
.score-cell{font-size:16px;font-weight:700}
.answer-badge{display:inline-block;min-width:34px;text-align:center;padding:3px 8px;border-radius:6px;background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:12.5px;letter-spacing:.05em}
.pagination{display:flex;gap:5px;padding:16px 20px;flex-wrap:wrap;border-top:1px solid var(--line-2)}
.pagination a,.page-ellipsis{min-width:32px;height:32px;display:grid;place-items:center;border-radius:6px;border:1px solid var(--line);font-size:13px;color:var(--ink-2)}
.pagination a:hover{border-color:var(--brand-2);color:var(--brand)}
.pagination a.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.page-ellipsis{border:0;color:var(--muted)}
.row-menu{position:relative}
.row-menu summary{list-style:none;cursor:pointer}
.row-menu summary::-webkit-details-marker{display:none}
.row-menu[open] summary{background:var(--brand-soft);color:var(--brand)}
.row-menu-body{position:absolute;right:0;top:calc(100% + 6px);z-index:25;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow-lg);padding:10px;min-width:220px;display:flex;flex-direction:column;gap:8px}
.mini-form{display:flex;gap:6px;align-items:center}
.mini-form .input{flex:1;min-width:0;padding:6px 8px;font-size:12.5px}
.mini-form .btn{flex-shrink:0}
.opt-preview{display:flex;flex-wrap:wrap;gap:4px 12px;margin-top:6px;color:var(--muted);font-size:11.5px}
.opt-preview span{white-space:nowrap}
.stem-cell{max-width:430px;min-width:250px}
.stem-cell strong{font-weight:550;font-size:13px}
.question-table td{vertical-align:top}
.cell-progress{min-width:130px}

/* ---------- 统计卡 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:18px}
.stat-grid-4{grid-template-columns:repeat(4,1fr)}
.stat-grid-6{grid-template-columns:repeat(6,1fr)}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:15px 16px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:2px}
.stat-card>span{color:var(--muted);font-size:12px}
.stat-card strong{font-size:25px;line-height:1.3;font-weight:680;letter-spacing:-.02em}
.stat-card small{color:var(--muted);font-size:11.5px}
.stat-strip{display:flex;align-items:center;gap:28px;padding:14px 20px;flex-wrap:wrap}
.stat-strip>div{display:flex;flex-direction:column}
.stat-strip span{font-size:11.5px;color:var(--muted)}
.stat-strip strong{font-size:19px}
.stat-strip form{margin-left:auto}
.bar-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.bar-list li{display:flex;align-items:center;gap:10px;font-size:12.5px}
.bar-label{width:96px;flex-shrink:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar-track{flex:1;height:8px;background:var(--line-2);border-radius:5px;overflow:hidden}
.bar-fill{display:block;height:100%;background:linear-gradient(90deg,var(--brand),#4b7cb5);border-radius:5px;min-width:2px}
.bar-value{width:56px;text-align:right;font-weight:600}
.bar-value small{color:var(--muted);font-weight:400}
.chart{display:flex;align-items:flex-end;gap:8px;height:190px;padding:16px 4px 0;overflow-x:auto}
.chart-col{flex:1;min-width:38px;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:4px}
.chart-value{font-size:10.5px;color:var(--muted)}
.chart-bar{width:70%;max-width:30px;background:linear-gradient(180deg,#4b7cb5,var(--brand));border-radius:4px 4px 0 0;min-height:2px;transition:height .3s}
.chart-label{font-size:10.5px;color:var(--muted);white-space:nowrap}
.hard-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.hard-list li{display:flex;align-items:center;gap:10px;font-size:12.5px;padding-bottom:9px;border-bottom:1px dashed var(--line-2)}
.hard-rate{background:var(--no-soft);color:var(--no);font-weight:700;padding:2px 7px;border-radius:5px;flex-shrink:0}
.hard-stem{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hard-list small{color:var(--muted);white-space:nowrap}
.rank{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:6px;background:var(--line-2);color:var(--muted);font-size:12px;font-weight:700}
.rank-1{background:#f6e3b8;color:#8a6212}.rank-2{background:#e6eaf0;color:#5b6675}.rank-3{background:#f0dfd0;color:#91613c}

/* ---------- 首页 ---------- */
.exam-hero{padding:26px 28px 28px;background:linear-gradient(150deg,#fff 0%,#fff 62%,#f2f6fc 100%);position:relative;overflow:hidden}
.exam-hero::after{content:"";position:absolute;right:-70px;top:-70px;width:220px;height:220px;border:1px solid #e6ecf5;border-radius:50%;box-shadow:0 0 0 28px rgba(230,236,245,.35);pointer-events:none}
.hero-top{display:flex;align-items:center;gap:10px;position:relative;z-index:1}
.hero-date{color:var(--muted);font-size:12px;letter-spacing:.05em}
.hero-subject{font-family:var(--serif);font-size:34px;margin:14px 0 2px;letter-spacing:.04em;position:relative;z-index:1}
.hero-title{color:var(--muted);font-size:14px;position:relative;z-index:1}
.hero-meta{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:24px 0 18px;padding:16px 0;border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2);position:relative;z-index:1}
.hero-meta div{display:flex;flex-direction:column;gap:3px}
.hero-meta strong{font-size:18px;font-weight:680}
.hero-meta span{font-size:11.5px;color:var(--muted)}
.hero-note{font-size:12.5px;color:var(--muted);background:#f7f9fc;border-left:3px solid var(--accent);padding:9px 12px;border-radius:0 6px 6px 0;position:relative;z-index:1}
.hero-actions{display:flex;align-items:center;gap:14px;margin-top:22px;position:relative;z-index:1}
.hero-today{margin-top:16px;font-size:12.5px;color:var(--muted);position:relative;z-index:1}
.hero-today strong{color:var(--brand)}
.home-side{display:flex;flex-direction:column;gap:0}
.side-card{padding:16px 18px}
.mini-list{list-style:none;margin:0;padding:0}
.mini-list li{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line-2)}
.mini-list li:last-child{border-bottom:0}
.mini-list div{display:flex;flex-direction:column}
.mini-list strong{font-size:13.5px;font-weight:600}
.mini-list small{color:var(--muted);font-size:11.5px}
.score-pill{padding:4px 11px;border-radius:20px;font-size:13px;font-weight:700}
.score-pill.good{background:var(--ok-soft);color:var(--ok)}
.score-pill.bad{background:var(--no-soft);color:var(--no)}
.shortcut-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.shortcut-grid a{display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 6px;border-radius:8px;background:#f8fafc;color:var(--ink-2);font-size:12px}
.shortcut-grid a:hover{background:var(--brand-soft);color:var(--brand)}
.shortcut-grid span{font-size:20px}

/* ---------- 答题 ---------- */
.exam-shell{padding-bottom:90px}
.exam-bar{position:sticky;top:66px;z-index:30;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:var(--r);padding:12px 18px;margin-bottom:18px;display:flex;align-items:center;justify-content:space-between;gap:16px;box-shadow:var(--shadow)}
.exam-bar-left{display:flex;align-items:center;gap:14px;flex:1;min-width:0}
.exam-progress-text{font-size:12.5px;color:var(--muted);white-space:nowrap}
.exam-progress-text strong{color:var(--brand);font-size:15px}
.progress-track{height:7px;background:var(--line-2);border-radius:6px;overflow:hidden;flex:1;max-width:320px}
.progress-track.lg{height:10px;max-width:none;margin:4px 0 12px}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--brand-2),#5b91c9);border-radius:6px;width:0;transition:width .25s}
.timer{font-variant-numeric:tabular-nums;font-size:19px;font-weight:700;color:var(--brand);letter-spacing:.04em;white-space:nowrap}
.timer.urgent{color:var(--no);animation:pulse 1s infinite}
.timer-quiet{font-size:13px;color:var(--muted);font-weight:500}
@keyframes pulse{50%{opacity:.55}}
.question-card{padding:20px 22px;scroll-margin-top:150px}
.q-head{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:12px}
.q-no{width:27px;height:27px;display:grid;place-items:center;border-radius:7px;background:var(--brand);color:#fff;font-size:13px;font-weight:700;flex-shrink:0}
.q-type{font-size:11.5px;color:var(--accent);border:1px solid #e7d6b8;background:#fdf9f1;padding:2px 8px;border-radius:20px}
.q-mark{margin-left:auto;font-size:11.5px;color:var(--muted)}
.q-stem{font-size:15.5px;line-height:1.75;font-weight:550;margin-bottom:14px}
.options{display:flex;flex-direction:column;gap:9px}
.option{position:relative;display:flex;align-items:flex-start;gap:11px;padding:11px 14px;border:1px solid var(--line);border-radius:9px;cursor:pointer;transition:all .15s;background:#fff}
.option:hover{border-color:#9db7d8;background:#fafcff}
.option.checked{border-color:var(--brand-2);background:var(--brand-soft);box-shadow:inset 0 0 0 1px rgba(42,86,136,.12)}
.option input{position:absolute;opacity:0;width:0;height:0}
.option-key{width:24px;height:24px;display:grid;place-items:center;border-radius:6px;background:var(--line-2);color:var(--ink-2);font-size:12.5px;font-weight:700;flex-shrink:0;transition:all .15s}
.option.checked .option-key{background:var(--brand);color:#fff}
.option-text{flex:1;font-size:14px;line-height:1.6;padding-top:1px}
.submit-bar{position:fixed;left:0;right:0;bottom:0;z-index:35;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-top:1px solid var(--line);box-shadow:0 -3px 18px rgba(25,48,82,.07)}
.submit-inner{max-width:1240px;margin:0 auto;padding:12px 22px;display:flex;align-items:center;justify-content:space-between;gap:14px}
.submit-inner>div{display:flex;flex-direction:column}
.submit-inner strong{font-size:15px}
.submit-inner small{font-size:11.5px;color:var(--muted)}

/* ---------- 成绩 / 解析 ---------- */
.result-hero{display:flex;align-items:center;gap:30px;padding:28px;flex-wrap:wrap}
.score-ring{width:132px;height:132px;border-radius:50%;flex-shrink:0;background:conic-gradient(var(--brand) calc(var(--pct)*1%),var(--line-2) 0);display:grid;place-items:center}
.score-ring-inner{width:108px;height:108px;border-radius:50%;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center}
.score-ring-inner strong{font-size:38px;line-height:1;font-weight:700;letter-spacing:-.03em}
.score-ring-inner span{font-size:12px;color:var(--muted);margin-top:4px}
.result-summary{flex:1;min-width:240px}
.result-summary h2{font-family:var(--serif);font-size:21px;margin:10px 0 6px}
.result-metrics{display:flex;gap:26px;margin-top:18px;flex-wrap:wrap}
.result-metrics div{display:flex;flex-direction:column}
.result-metrics strong{font-size:17px}
.result-metrics span{font-size:11.5px;color:var(--muted)}
.result-actions{display:flex;gap:8px;flex-wrap:wrap;align-self:flex-start}
.review-card{padding:20px 22px}
.review-ok{border-left:3px solid var(--ok)}
.review-bad{border-left:3px solid var(--no)}
.q-answer{font-size:12px;color:var(--muted)}
.q-answer strong{color:var(--ink);letter-spacing:.06em;margin-left:3px}
.review-options{display:flex;flex-direction:column;gap:7px;margin-bottom:14px}
.review-options.compact{gap:5px;margin-bottom:12px}
.review-option{display:flex;align-items:flex-start;gap:10px;padding:9px 12px;border:1px solid var(--line-2);border-radius:8px;font-size:13.5px;background:#fcfdff}
.review-options.compact .review-option{padding:6px 10px;font-size:13px}
.review-option.opt-correct{background:var(--ok-soft);border-color:#c8e8d9}
.review-option.opt-wrong{background:var(--no-soft);border-color:#f2cfcb}
.review-option .option-key{width:22px;height:22px;font-size:12px}
.review-option.opt-correct .option-key{background:var(--ok);color:#fff}
.review-option.opt-wrong .option-key{background:var(--no);color:#fff}
.review-option .tag{margin-left:auto;font-size:11px;font-weight:600;white-space:nowrap;opacity:.8}
.explanation,.source-hint{font-size:13px;line-height:1.8;padding:11px 14px;border-radius:8px;margin-top:9px;background:#f7f9fc;color:var(--ink-2)}
.source-hint{background:#fdfaf3;color:#7a6a4c;font-size:12px}
.explanation>strong,.source-hint>strong{display:block;font-size:12px;color:var(--brand);margin-bottom:4px;letter-spacing:.04em}
.source-hint>strong{color:var(--accent)}
.explanation p,.source-hint p{margin:0}
.answer-line{font-size:13.5px;margin:0 0 4px}
.answer-line strong{letter-spacing:.08em;color:var(--ok);font-size:15px}
.answer-details{border-top:1px solid var(--line-2);padding-top:10px}
.answer-details summary{cursor:pointer;font-size:13px;color:var(--brand-2);font-weight:600;list-style:none}
.answer-details summary::before{content:"▸ ";display:inline-block;transition:transform .15s}
.answer-details[open] summary::before{transform:rotate(90deg)}
.details-body{padding-top:10px}
.wrong-actions{margin-top:12px;display:flex;justify-content:flex-end}
.wrong-card{padding:18px 20px}

/* ---------- 管理端 ---------- */
.warning-card{padding:6px 18px}
.warning-row{display:flex;align-items:center;gap:10px;padding:9px 0;font-size:13px;border-bottom:1px dashed var(--line-2)}
.warning-row:last-child{border-bottom:0}
.warning-row a{margin-left:auto;white-space:nowrap;font-size:12.5px;font-weight:600}
.warn-dot{width:7px;height:7px;border-radius:50%;background:var(--warn);flex-shrink:0}
.daily-box{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.daily-main{flex:1;min-width:150px}
.daily-main h2{font-family:var(--serif);font-size:24px;margin:8px 0 2px}
.daily-metrics{display:flex;gap:22px;flex-wrap:wrap}
.daily-metrics div{display:flex;flex-direction:column}
.daily-metrics strong{font-size:18px}
.daily-metrics span{font-size:11px;color:var(--muted)}
.tip-card{background:linear-gradient(160deg,#fbfcfe,#f4f7fc)}
.rule-list{list-style:none;counter-reset:r;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.rule-list li{counter-increment:r;position:relative;padding-left:30px;font-size:13px;color:var(--ink-2)}
.rule-list li::before{content:counter(r,decimal-leading-zero);position:absolute;left:0;top:1px;font-size:11px;font-weight:700;color:var(--accent);font-family:ui-monospace,monospace}
.rule-list strong{display:block;color:var(--ink);font-size:13.5px;margin-bottom:1px}
.rule-list span{font-size:12.5px;color:var(--muted);line-height:1.6}
.my-rank{display:flex;gap:36px;flex-wrap:wrap;padding:18px 24px}
.my-rank div{display:flex;flex-direction:column}
.my-rank span{font-size:11.5px;color:var(--muted)}
.my-rank strong{font-size:19px}
.gen-panel{border-color:#b9cde5;background:#fbfdff}
.gen-log{max-height:180px;overflow-y:auto;font-size:12.5px;color:var(--ink-2);line-height:1.9}
.gen-log .log-error{color:var(--no);font-weight:600}
.gen-log .log-ok{color:var(--ok)}
.info-box{background:#f7f9fc;border-radius:8px;padding:11px 13px;font-size:12px;color:var(--muted);line-height:1.8}
.info-box strong{color:var(--ink-2);font-size:12.5px}
.sticky-save{position:sticky;bottom:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:var(--r);padding:12px 18px;display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px;box-shadow:var(--shadow)}
.option-editor{display:flex;flex-direction:column;gap:7px;margin-top:3px}
.option-editor-row{display:flex;align-items:center;gap:9px}
.option-editor-row .input{flex:1;min-width:0}
.text-preview{max-height:52vh;overflow:auto;background:#f7f9fc;border:1px solid var(--line-2);border-radius:8px;padding:14px;font-size:12.5px;line-height:1.8;white-space:pre-wrap;word-break:break-word;font-family:inherit;color:var(--ink-2)}

/* ---------- 模态 ---------- */
.modal{position:fixed;inset:0;z-index:80;display:flex;align-items:center;justify-content:center;padding:20px}
.modal-mask{position:absolute;inset:0;background:rgba(18,32,52,.46);backdrop-filter:blur(2px)}
.modal-box{position:relative;background:#fff;border-radius:14px;box-shadow:var(--shadow-lg);padding:24px;width:100%;max-width:640px;max-height:90vh;overflow-y:auto}
.modal-sm{max-width:400px}
.modal-lg{max-width:760px}
.modal-box h3{font-family:var(--serif);font-size:19px;margin-bottom:14px}
.modal-box>p{font-size:13.5px;color:var(--muted)}
.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:20px}

/* ---------- 登录 ---------- */
.auth-body{background:#eef2f7;min-height:100vh}
.auth-shell{display:grid;grid-template-columns:1.05fr 1fr;min-height:100vh;max-width:1180px;margin:0 auto;background:#fff;box-shadow:0 0 60px rgba(20,40,70,.08)}
.auth-aside{background:linear-gradient(155deg,#1b3a63 0%,#122b4b 60%,#0d2039 100%);color:#fff;padding:44px 48px;display:flex;flex-direction:column;position:relative;overflow:hidden}
.auth-aside::after{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(233,217,182,.12);border-radius:50%;right:-180px;bottom:-160px;box-shadow:0 0 0 60px rgba(233,217,182,.035),0 0 0 120px rgba(233,217,182,.025)}
.auth-brand{display:flex;align-items:center;gap:12px;position:relative;z-index:1}
.auth-brand strong{font-family:var(--serif);font-size:20px;letter-spacing:.08em;display:block}
.auth-brand small{font-size:11.5px;color:#b8c9de;letter-spacing:.1em}
.auth-aside-main{margin:auto 0;position:relative;z-index:1}
.eyebrow{font-size:11px;letter-spacing:.28em;color:#cbb083;margin-bottom:18px}
.auth-aside-main h1{font-family:var(--serif);font-size:40px;line-height:1.4;letter-spacing:.04em;margin-bottom:18px}
.auth-aside-main .lead{color:#c3d2e4;font-size:14px;line-height:1.9;max-width:340px}
.feature-list{list-style:none;margin:34px 0 0;padding:0;display:flex;flex-direction:column;gap:14px}
.feature-list li{display:flex;align-items:center;gap:12px;font-size:13.5px;color:#d8e3f0}
.feature-list span{font-family:ui-monospace,monospace;font-size:11px;color:#cbb083;border:1px solid rgba(203,176,131,.4);padding:3px 7px;border-radius:5px}
.auth-aside-foot{font-size:11.5px;color:#8ba2bd;position:relative;z-index:1}
.auth-panel{display:flex;align-items:center;justify-content:center;padding:40px}
.auth-card{width:100%;max-width:340px}
.auth-card h2{font-family:var(--serif);font-size:26px;margin-bottom:6px}
.auth-card>.muted{font-size:13px;margin-bottom:24px}
.auth-card .form{gap:16px}
.auth-card .btn-lg{margin-top:6px}
.auth-tip{text-align:center;color:var(--muted);font-size:12px;margin-top:22px}

/* ---------- 防溢出：长内容不撑破栅格（移动端关键） ---------- */
.admin-grid>*,.home-grid>*,.stat-grid>*,.stat-strip>*,.mainnav,.chart,.exam-bar-left,.result-summary{min-width:0}
.field input,.field select,.field textarea,.input,.option-editor-row .input{min-width:0}
code,.info-box,.mono,.text-preview,.source-hint,.explanation,.hard-stem,.q-stem,.option-text{overflow-wrap:anywhere}
.table-card,.chart,.gen-log,.text-preview{max-width:100%}

/* ---------- 响应式：PC / 平板 / 手机自动适配 ---------- */
@media (max-width:1100px){
  .stat-grid-6{grid-template-columns:repeat(3,1fr)}
  .home-grid,.admin-grid,.admin-grid-2,.admin-grid-form{grid-template-columns:1fr}
  .topbar-inner{gap:14px}
}
@media (max-width:760px){
  /* 移动端顶栏不吸顶，把吸顶层让给答题进度条与倒计时 */
  .topbar{position:relative}
  .topbar-inner{height:auto;min-height:60px;padding:9px 14px;flex-wrap:wrap;gap:8px}
  .mainnav{order:3;width:100%;flex-basis:100%}
  .mainnav a{padding:10px 12px;font-size:13px}
  .mainnav a.active::after{left:12px;right:12px;bottom:-9px}
  .userbox{margin-left:auto}
  .uname{display:none}
  .container{padding:18px 14px 50px}
  .page-head h1{font-size:22px}
  .card{padding:16px}
  .exam-hero{padding:20px}
  .hero-subject{font-size:28px}
  .hero-meta{grid-template-columns:repeat(2,1fr);gap:14px}
  .stat-grid-4,.stat-grid-6,.stat-grid{grid-template-columns:repeat(2,1fr)}
  .form-row,.form-row-3{grid-template-columns:1fr}
  .result-hero{gap:18px;padding:20px}
  .result-actions{width:100%}
  .q-stem{font-size:15px}
  .ongoing-card{flex-wrap:wrap;align-items:flex-start;padding:14px}
  .ongoing-actions{width:100%;padding-left:52px}
  .ongoing-actions form{flex:1}
  .ongoing-actions form .btn{width:100%}
  .ongoing-actions>a.btn{flex:1}

  /* 表单控件统一 16px，避免 iOS Safari 聚焦时自动放大整页 */
  .input,.field input:not([type=checkbox]):not([type=file]),.field select,.field textarea,
  input,select,textarea{font-size:16px}

  /* 表格改为横向滚动，列不被压扁 */
  .table{min-width:620px}
  .table th,.table td{padding:10px 12px}
  .table-card .card-head{padding:16px 14px 12px}
  .pagination{padding:14px}
  .btn-sm{min-height:34px;padding:8px 12px}
  .row-actions{gap:6px}
  .filter-form label{flex:1 1 calc(50% - 8px);min-width:0}
  .filter-form label.grow{flex-basis:100%}
  .filter-form .input{min-width:0;width:100%}
  .option-editor-row .input{min-width:0}

  /* 表格里的操作菜单改为底部面板，避免被表格的 overflow 裁剪 */
  .row-menu-body{position:fixed;left:12px;right:12px;bottom:12px;top:auto;width:auto;
    min-width:0;max-height:70vh;overflow-y:auto;padding:14px;border-radius:14px}
  .row-menu[open] .row-menu-body{z-index:90}

  /* 答题页：进度与倒计时吸顶，交卷条兼容 iPhone 底部安全区 */
  .exam-bar{position:sticky;top:0;z-index:30;padding:10px 12px;gap:10px;margin-bottom:14px}
  .exam-bar-left{gap:9px}
  .exam-progress-text{font-size:12px}
  .progress-track{max-width:150px}
  .timer{font-size:17px}
  .question-card{padding:16px;scroll-margin-top:74px}
  .option{padding:12px}
  .submit-inner{padding:10px 14px calc(10px + env(safe-area-inset-bottom))}
  .submit-inner .btn-lg{padding:10px 18px;font-size:14px}
  .exam-shell{padding-bottom:calc(90px + env(safe-area-inset-bottom))}

  .auth-shell{grid-template-columns:1fr}
  .auth-aside{display:none}
  .auth-panel{min-height:100vh;padding:30px 22px}
  .modal{padding:12px}
  .modal-box{padding:18px;max-height:94vh}
  .modal-actions .btn{flex:1}
  .sticky-save{flex-direction:column;align-items:stretch;padding:12px 14px calc(12px + env(safe-area-inset-bottom))}
  .stat-strip{gap:16px}
  .stat-strip form{margin-left:0}
  .chart{height:160px}
  .footer{padding:16px 14px calc(16px + env(safe-area-inset-bottom))}
}
@media (max-width:420px){
  .container{padding:14px 10px 46px}
  .card{padding:14px}
  .brand-text small{display:none}
  .brand-text strong{font-size:16px}
  .brand-mark svg{width:30px;height:30px}
  .icon-link{font-size:12px}
  .page-head h1{font-size:20px}
  .hero-subject{font-size:25px}
  .hero-meta{gap:10px}
  .result-metrics{gap:16px}
  .score-ring{width:110px;height:110px}
  .score-ring-inner{width:90px;height:90px}
  .score-ring-inner strong{font-size:31px}
  .shortcut-grid{gap:6px}
  .stat-card{padding:12px}
  .stat-card strong{font-size:21px}
  .exam-bar-left{flex-wrap:wrap;gap:6px}
  .progress-track{flex-basis:100%;max-width:none;order:3;height:5px}
  .filter-form label{flex-basis:100%}
  .q-stem{font-size:14.5px}
  .option-text{font-size:13.5px}
  .review-option{font-size:13px}
  .daily-metrics{gap:14px}
  .my-rank{gap:18px;padding:16px}
  .form-actions .btn{flex:1}
  .ongoing-actions{padding-left:0}
}
@media print{
  .topbar,.footer,.submit-bar,.result-actions,.page-actions{display:none!important}
  .card{box-shadow:none;border:1px solid #ddd;break-inside:avoid}
  body{background:#fff}
}