/* ============================================================
   行测刷题 —— 样式
   ============================================================ */

:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --panel-2: #fafbfc;
  --border: #e3e6ea;
  --border-strong: #ccd2d9;
  --text: #1c2025;
  --text-2: #5a626c;
  --muted: #8b939d;
  --accent: #2f6feb;
  --accent-soft: #eaf1fe;
  --ok: #16a34a;
  --ok-soft: #e8f7ee;
  --bad: #dc2626;
  --bad-soft: #fdecec;
  --warn: #d97706;
  --warn-soft: #fdf3e3;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 16px rgba(16, 24, 40, .06);
  --radius: 12px;
  --mono: ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --panel: #1c2027;
    --panel-2: #22272f;
    --border: #2c313a;
    --border-strong: #3c434e;
    --text: #e6e9ee;
    --text-2: #a8b0bb;
    --muted: #7b838f;
    --accent: #5b8dfa;
    --accent-soft: #1e2a44;
    --ok: #4ade80;
    --ok-soft: #16301f;
    --bad: #f87171;
    --bad-soft: #3a1c1c;
    --warn: #fbbf24;
    --warn-soft: #3a2d10;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei",
    "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.app { max-width: 1180px; margin: 0 auto; padding: 0 20px 80px; }
.app.wide { max-width: 1500px; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.35; margin: 0; font-weight: 600; }

/* ---------------------------------------------------------- 顶栏 */

.topbar {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: 14px;
  padding: 12px 0; margin-bottom: 18px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.topbar .brand { font-weight: 700; font-size: 16px; letter-spacing: .02em; }
.topbar .brand span { color: var(--muted); font-weight: 400; font-size: 13px; margin-left: 8px; }
.topbar .spacer { flex: 1; }

.navlinks { display: flex; gap: 4px; flex-wrap: wrap; }
.navlinks a {
  padding: 6px 12px; border-radius: 8px; color: var(--text-2);
  font-size: 14px; text-decoration: none;
}
.navlinks a:hover { background: var(--panel-2); color: var(--text); text-decoration: none; }
.navlinks a.on { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

/* ---------------------------------------------------------- 通用 */

.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.card + .card { margin-top: 16px; }
.card-pad { padding: 18px 20px; }
.card-head {
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.card-head h2, .card-head h3 { font-size: 16px; }
.card-head .spacer { flex: 1; }

.muted { color: var(--muted); }
.dim { color: var(--text-2); }
.small { font-size: 13px; }
.tiny { font-size: 12px; }
.nowrap { white-space: nowrap; }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.col { display: flex; flex-direction: column; gap: 10px; }
.right { margin-left: auto; }
.center { text-align: center; }

/* ---------------------------------------------------------- 按钮 */

button, .btn {
  font: inherit; font-size: 14px;
  padding: 8px 16px; border-radius: 9px;
  border: 1px solid var(--border-strong);
  background: var(--panel); color: var(--text);
  cursor: pointer; transition: .13s ease;
  display: inline-flex; align-items: center; gap: 6px;
  text-decoration: none; white-space: nowrap;
}
button:hover, .btn:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
button:disabled { opacity: .45; cursor: not-allowed; }
button:disabled:hover { border-color: var(--border-strong); color: var(--text); }

.btn-primary {
  background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600;
}
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 85%, #000); color: #fff; border-color: transparent; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--panel-2); }
.btn-sm { padding: 5px 11px; font-size: 13px; border-radius: 7px; }
.btn-lg { padding: 11px 22px; font-size: 15px; }
.btn-danger:hover { border-color: var(--bad); color: var(--bad); }

/* ---------------------------------------------------------- 表单 */

input[type=text], input[type=number], input[type=search], select, textarea {
  font: inherit; font-size: 14px; padding: 7px 11px;
  border: 1px solid var(--border-strong); border-radius: 8px;
  background: var(--panel); color: var(--text); min-width: 0;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }

label.check {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 12px 6px 9px; border: 1px solid var(--border);
  border-radius: 999px; cursor: pointer; font-size: 13.5px;
  background: var(--panel); transition: .13s; user-select: none;
}
label.check:hover { border-color: var(--border-strong); }
label.check.on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); font-weight: 600; }
label.check input { margin: 0; accent-color: var(--accent); }
label.check .n { color: var(--muted); font-weight: 400; font-size: 12px; }
label.check.on .n { color: var(--accent); opacity: .75; }

.field { display: flex; flex-direction: column; gap: 5px; }
.field > .lbl { font-size: 13px; color: var(--text-2); font-weight: 500; }

/* ---------------------------------------------------------- 首页 */

.hero { padding: 26px 0 6px; }
.hero h1 { font-size: 27px; letter-spacing: -.01em; }
.hero p { color: var(--text-2); margin: 9px 0 0; }

.stats { display: flex; gap: 26px; flex-wrap: wrap; margin-top: 18px; }
.stats .s { }
.stats .s b { display: block; font-size: 22px; font-variant-numeric: tabular-nums; }
.stats .s span { font-size: 12.5px; color: var(--muted); }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin-top: 20px; }
.tile {
  display: block; padding: 20px; border-radius: var(--radius);
  background: var(--panel); border: 1px solid var(--border);
  box-shadow: var(--shadow); color: inherit; text-decoration: none;
  transition: .15s;
}
.tile:hover { border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.tile .ic { font-size: 22px; line-height: 1; }
.tile h3 { margin: 10px 0 5px; font-size: 16.5px; }
.tile p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.6; }

/* ---------------------------------------------------------- 列表 */

.paper-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 12px; }
.paper {
  padding: 14px 16px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--panel); cursor: pointer; transition: .13s;
  display: flex; flex-direction: column; gap: 9px;
}
.paper:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.paper .ttl { font-weight: 600; font-size: 14.5px; line-height: 1.5; }
.paper .meta { display: flex; gap: 7px; flex-wrap: wrap; align-items: center; font-size: 12.5px; color: var(--muted); }

.chip {
  display: inline-block; padding: 2px 9px; border-radius: 999px;
  background: var(--panel-2); border: 1px solid var(--border);
  font-size: 12px; color: var(--text-2); white-space: nowrap;
}
.chip.acc { background: var(--accent-soft); border-color: transparent; color: var(--accent); }
.chip.ok { background: var(--ok-soft); border-color: transparent; color: var(--ok); }
.chip.bad { background: var(--bad-soft); border-color: transparent; color: var(--bad); }
.chip.warn { background: var(--warn-soft); border-color: transparent; color: var(--warn); }

/* ---------------------------------------------------------- 表格 */

table.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
table.tbl th, table.tbl td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border); }
table.tbl th { font-size: 12.5px; color: var(--muted); font-weight: 600; white-space: nowrap; }
table.tbl td.num, table.tbl th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.tbl tbody tr:hover { background: var(--panel-2); }
table.tbl tfoot td { font-weight: 700; border-top: 2px solid var(--border-strong); border-bottom: none; }

/* ---------------------------------------------------------- 刷题 */

.quizbar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 11px 16px; background: var(--panel);
  border: 1px solid var(--border); border-radius: 10px; margin-bottom: 14px;
  position: sticky; top: 0; z-index: 25;
  box-shadow: var(--shadow);
}
.quizbar .ttl { font-weight: 600; font-size: 14.5px; }
.quizbar .prog { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.quizbar .clock { font-family: var(--mono); font-size: 13.5px; color: var(--text-2); font-variant-numeric: tabular-nums; }

.progress { height: 4px; background: var(--border); border-radius: 99px; overflow: hidden; }
.progress > i { display: block; height: 100%; background: var(--accent); transition: width .2s; }

.quiz-wrap { display: grid; grid-template-columns: 1fr 220px; gap: 16px; align-items: start; }
@media (max-width: 940px) { .quiz-wrap { grid-template-columns: 1fr; } .aside { order: -1; } }

.qbody { padding: 20px 24px; }
.qbody.with-mat { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 26px; }
@media (max-width: 860px) { .qbody.with-mat { grid-template-columns: 1fr; } }

.mat {
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px 16px; font-size: 14.5px;
  max-height: 62vh; overflow: auto; color: var(--text-2);
}
.mat .mat-h {
  font-size: 12px; color: var(--muted); font-weight: 600;
  letter-spacing: .06em; margin-bottom: 8px; text-transform: uppercase;
}
.qmain { min-width: 0; }

.qmeta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.stem { font-size: 16px; line-height: 1.85; }
.stem p { margin: 0 0 10px; }
.stem p:last-child { margin-bottom: 0; }

.opts { display: flex; flex-direction: column; gap: 9px; margin-top: 18px; }
.opt {
  display: flex; gap: 11px; align-items: flex-start;
  padding: 11px 14px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--panel); cursor: pointer; transition: .12s;
  font-size: 15px; line-height: 1.7;
}
.opt:hover { border-color: var(--accent); background: var(--accent-soft); }
.opt .k {
  flex: 0 0 24px; width: 24px; height: 24px; border-radius: 50%;
  border: 1.5px solid var(--border-strong); color: var(--text-2);
  display: grid; place-items: center; font-size: 12.5px; font-weight: 700;
  margin-top: 2px;
}
.opt .t { min-width: 0; }
.opt .t p { margin: 0; }
.opt.sel { border-color: var(--accent); background: var(--accent-soft); }
.opt.sel .k { background: var(--accent); border-color: var(--accent); color: #fff; }
.opt.correct { border-color: var(--ok); background: var(--ok-soft); }
.opt.correct .k { background: var(--ok); border-color: var(--ok); color: #fff; }
.opt.wrong { border-color: var(--bad); background: var(--bad-soft); }
.opt.wrong .k { background: var(--bad); border-color: var(--bad); color: #fff; }
.opt.locked { cursor: default; }
.opt.locked:hover { border-color: var(--border); background: var(--panel); }
.opt.locked.correct:hover { border-color: var(--ok); background: var(--ok-soft); }
.opt.locked.wrong:hover { border-color: var(--bad); background: var(--bad-soft); }
.opt.locked.sel:hover { border-color: var(--accent); background: var(--accent-soft); }

.expl {
  margin-top: 18px; padding: 16px 18px; border-radius: 10px;
  background: var(--panel-2); border: 1px solid var(--border);
  font-size: 14.5px; line-height: 1.85;
}
.expl .expl-h {
  font-size: 12px; font-weight: 700; color: var(--muted);
  letter-spacing: .06em; margin-bottom: 9px;
}
.expl p { margin: 0 0 9px; }
.expl p:last-child { margin-bottom: 0; }

.verdict { padding: 11px 15px; border-radius: 9px; margin-top: 16px; font-size: 14.5px; }
.verdict.ok { background: var(--ok-soft); color: var(--ok); border: 1px solid color-mix(in srgb, var(--ok) 30%, transparent); }
.verdict.bad { background: var(--bad-soft); color: var(--bad); border: 1px solid color-mix(in srgb, var(--bad) 30%, transparent); }
.verdict b { font-weight: 700; }

.qnav { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; padding: 14px 20px; border-top: 1px solid var(--border); }
.qnav .r { margin-left: auto; display: flex; gap: 10px; }

/* 答题卡 */
.aside { position: sticky; top: 74px; }
.sheet { display: grid; grid-template-columns: repeat(auto-fill, minmax(34px, 1fr)); gap: 6px; }
.sheet button {
  padding: 0; height: 32px; justify-content: center; font-size: 12.5px;
  border-radius: 7px; font-variant-numeric: tabular-nums; font-weight: 600;
  color: var(--text-2);
}
.sheet button.done { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 40%, transparent); color: var(--accent); }
.sheet button.ok { background: var(--ok-soft); border-color: color-mix(in srgb, var(--ok) 40%, transparent); color: var(--ok); }
.sheet button.bad { background: var(--bad-soft); border-color: color-mix(in srgb, var(--bad) 40%, transparent); color: var(--bad); }
.sheet button.cur { outline: 2px solid var(--accent); outline-offset: 1px; }
.sheet button.flag::after { content: "•"; position: absolute; }
.sheet button.flagged { box-shadow: inset 0 -3px 0 var(--warn); }

.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 12px; color: var(--muted); margin-top: 12px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 4px; vertical-align: -1px; }

/* ---------------------------------------------------------- 报告 */

.score { display: flex; gap: 34px; flex-wrap: wrap; }
.score .s b { display: block; font-size: 27px; font-variant-numeric: tabular-nums; line-height: 1.25; }
.score .s span { font-size: 12.5px; color: var(--muted); }
.score .s.ok b { color: var(--ok); }
.score .s.bad b { color: var(--bad); }

.qitem { border-top: 1px solid var(--border); padding: 14px 20px; }
.qitem:first-child { border-top: none; }
.qitem > summary { cursor: pointer; list-style: none; display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.qitem > summary::-webkit-details-marker { display: none; }
.qitem > summary::before { content: "▸"; color: var(--muted); font-size: 11px; transition: .15s; }
.qitem[open] > summary::before { content: "▾"; }
.qitem .qt { flex: 1; min-width: 0; font-size: 14px; }
.qitem .detail { padding: 14px 0 4px 20px; }

.expl-toggle { margin-top: 10px; }
.expl-toggle summary { cursor: pointer; font-size: 13px; color: var(--accent); }

/* ---------------------------------------------------------- 弹层 */

.modal-bg {
  position: fixed; inset: 0; background: rgba(10, 14, 20, .5);
  display: grid; place-items: center; z-index: 100; padding: 20px;
}
.modal {
  background: var(--panel); border-radius: 14px; border: 1px solid var(--border);
  max-width: 860px; width: 100%; max-height: 86vh; overflow: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .3);
}
.modal-head { display: flex; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--panel); }
.modal-head h3 { font-size: 16px; flex: 1; }
.modal-body { padding: 16px 20px 20px; }
.modal textarea { width: 100%; min-height: 320px; font-family: var(--mono); font-size: 12.5px; line-height: 1.6; }

.toast {
  position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%);
  background: #1c2025; color: #fff; padding: 10px 20px; border-radius: 999px;
  font-size: 14px; z-index: 200; box-shadow: 0 8px 30px rgba(0, 0, 0, .3);
}
@media (prefers-color-scheme: dark) { .toast { background: #e6e9ee; color: #14171c; } }

.empty { padding: 44px 20px; text-align: center; color: var(--muted); }
.empty .big { font-size: 30px; margin-bottom: 10px; }

.filters { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.filters .seg { display: flex; gap: 5px; flex-wrap: wrap; }

.pv { font-size: 13px; }
.pv b { font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------- 面包屑 */

.crumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--muted); margin: 2px 2px 12px;
}
.crumb a { color: var(--text-2); }
.crumb span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------------------------------------------------------- 卷卡片上的模块直通 */

.modstart { display: flex; gap: 6px; flex-wrap: wrap; margin-top: auto; }
.modstart .btn {
  font-size: 12.5px; padding: 5px 10px; border-radius: 7px;
  color: var(--text-2); border-color: var(--border);
}
.modstart .btn b { color: var(--accent); font-variant-numeric: tabular-nums; margin-left: 2px; }
.modstart .btn:hover { background: var(--accent-soft); }

.listbar {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  margin: 14px 2px; font-size: 13.5px; color: var(--text-2);
}
.listbar b { color: var(--text); font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------- 卷详情：选择要做哪部分 */

.pickmod {
  border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px; background: var(--panel-2); transition: .13s;
}
.pickmod.on { border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); background: var(--panel); }
.pickmod-h { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.pickmod-h .check { border-color: transparent; background: transparent; padding-left: 2px; }
.pickmod-h .check:hover { border-color: transparent; }

.startbar {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  position: sticky; bottom: 14px; z-index: 20;
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
  box-shadow: 0 6px 26px rgba(16, 24, 40, .13);
}
@media (prefers-color-scheme: dark) {
  .startbar { box-shadow: 0 6px 26px rgba(0, 0, 0, .45); }
}
.bigcount { font-size: 19px; color: var(--accent); font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------- 报告：按题型分组 */

.qgroup { border-top: 1px solid var(--border); }
.qgroup:first-child { border-top: none; }
.qgroup > summary {
  display: flex; align-items: center; gap: 9px; flex-wrap: wrap;
  padding: 11px 20px; cursor: pointer; list-style: none;
  background: var(--panel-2); font-size: 14px;
}
.qgroup > summary::-webkit-details-marker { display: none; }
.qgroup > summary::before { content: "▸"; color: var(--muted); font-size: 11px; transition: .15s; }
.qgroup[open] > summary::before { content: "▾"; }
.qgroup > summary:hover { background: var(--accent-soft); }
.qgroup .gtype { font-weight: 700; }
.qgroup > .qitem { padding-left: 34px; }
.qgroup .spacer { flex: 1; }
.chip.tiny { padding: 1px 7px; font-size: 11px; }

/* 题目内容里的图片 */
.stem img, .opt img, .expl img, .mat img, .qitem img { max-width: 100%; }
img.tex {
  display: inline-block; vertical-align: middle;
  max-height: 1.45em; width: auto; margin: 0 1px;
}
/* Source diagrams contain fixed inline pixel dimensions. When max-width
   shrinks their width, release the fixed height to preserve the original ratio. */
img.fig { display: inline-block; vertical-align: middle; height: auto !important; }
.stem > img.fig, .expl > img.fig, .mat > img.fig { display: block; margin: 10px 0; }

/* 表格类题目内容（部分题干含表格） */
.stem table, .expl table, .mat table { border-collapse: collapse; max-width: 100%; }
.stem table td, .stem table th, .expl table td, .mat table td { border: 1px solid var(--border-strong); padding: 4px 8px; }
.stem u { text-decoration: underline; }

@media print {
  .topbar, .qnav, .aside, .quizbar button { display: none; }
}