/* 得到老师预测回测专题：专题首页与三位老师页面共用 */
:root {
  --bg: #faf9f7;
  --panel: #ffffff;
  --ink: #3d3d3d;
  --ink-strong: #232323;
  --muted: #77736b;
  --faint: #a8a39a;
  --line: #e9e5dd;
  --line-strong: #d9d3c8;
  --accent: #5c7a6f;
  --accent-ink: #45605a;
  --accent-soft: #e8efeb;
  --hl: #f5e3b3;
  /* 结果三色经 dataviz 校验：色盲分离 ΔE ≥ 13.7，琥珀对比度不足 3:1，故处处配文字标签 */
  --ok: #2e8b57;
  --part: #e3a32b;
  --bad: #cf4b3a;
  --open: #a3adb8;
  --na: #ddd8cf;
  --ok-soft: #e4f1e9;
  --part-soft: #fbf0d8;
  --bad-soft: #f8e3df;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}
a { color: var(--accent-ink); text-decoration: none; border-bottom: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); }
a:hover { color: var(--accent); border-bottom-color: var(--accent); }
b, strong { color: var(--ink-strong); font-weight: 600; }

.wrap { width: min(1560px, 100%); margin: 0 auto; padding: 0 clamp(16px, 4vw, 64px); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 3vw, 48px); align-items: start; }
.grid2 > div > h2 { margin-bottom: 6px; }
@media (max-width: 1080px) { .grid2 { grid-template-columns: 1fr; } }

/* 顶部导航：面包屑 + 三位老师切换 */
.topnav { border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 20; }
.topnav .wrap { display: flex; align-items: center; gap: 18px; min-height: 52px; flex-wrap: wrap; }
.topnav a { border: 0; color: var(--muted); font-size: 14px; padding: 12px 0; }
.topnav a:hover { color: var(--ink-strong); }
.topnav .home { color: var(--ink-strong); font-weight: 600; margin-right: auto; }
.topnav a[aria-current="page"] { color: var(--accent-ink); box-shadow: inset 0 -2px 0 var(--accent); }

/* 页首 */
.hero { padding: clamp(36px, 6vw, 72px) 0 clamp(24px, 4vw, 40px); }
.eyebrow { font-size: 14px; color: var(--accent-ink); font-weight: 600; letter-spacing: .02em; margin-bottom: 14px; }
h1 { font-size: clamp(30px, 5.4vw, 52px); line-height: 1.18; color: var(--ink-strong); font-weight: 700; letter-spacing: -0.01em; text-wrap: balance; }
.lede { margin-top: 18px; font-size: clamp(17px, 2.1vw, 21px); line-height: 1.7; color: var(--ink); max-width: 1000px; text-wrap: pretty; }
.meta-line { margin-top: 16px; font-size: 14px; color: var(--muted); }

section.block { padding: clamp(24px, 4vw, 48px) 0; border-top: 1px solid var(--line); }
h2 { font-size: clamp(22px, 3vw, 30px); line-height: 1.3; color: var(--ink-strong); font-weight: 700; margin-bottom: 10px; text-wrap: balance; }
h3 { font-size: 18px; line-height: 1.45; color: var(--ink-strong); font-weight: 600; }
.sub { color: var(--muted); font-size: 15px; margin-bottom: 18px; max-width: 1000px; }
.prose p + p, .prose p + ul, .prose ul + p { margin-top: 14px; }
.prose ul { padding-left: 1.2em; display: grid; gap: 8px; }

/* 高亮：重点句子 */
.hl { background: linear-gradient(transparent 58%, var(--hl) 58%); padding: 0 1px; color: var(--ink-strong); font-weight: 600; }
.ok-t { color: var(--ok); font-weight: 600; }
.bad-t { color: var(--bad); font-weight: 600; }

/* 计分卡 */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; }
.tile { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.tile .label { font-size: 13px; color: var(--muted); }
.tile .value { font-size: clamp(30px, 4.2vw, 40px); font-weight: 650; color: var(--ink-strong); line-height: 1.15; margin-top: 4px; }
.tile .value small { font-size: 16px; font-weight: 500; color: var(--muted); margin-left: 2px; }
.tile .note { font-size: 13px; color: var(--muted); margin-top: 4px; line-height: 1.5; }
.tile.key { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); background: linear-gradient(180deg, var(--accent-soft), var(--panel) 70%); }

/* 图表容器 */
.chart-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(16px, 2.6vw, 24px); }
.chart-card + .chart-card { margin-top: 16px; }
.two-col > .chart-card + .chart-card { margin-top: 0; }
.chart-card h3 { margin-bottom: 4px; }
.chart-card .cap { font-size: 14px; color: var(--muted); margin-bottom: 14px; }
.chart { width: 100%; position: relative; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart text { font-family: var(--sans); fill: var(--ink); }
.chart .axis text, .chart .tick { fill: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.chart .grid line { stroke: var(--line); stroke-width: 1; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 13px; color: var(--muted); margin-top: 12px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 860px) { .two-col { grid-template-columns: 1fr; } }

/* 悬停提示 */
.tip { position: fixed; z-index: 50; pointer-events: none; max-width: 340px; background: #2b2b2b; color: #f3f1ec; font-size: 13px; line-height: 1.55; padding: 10px 12px; border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,.18); opacity: 0; transform: translateY(4px); transition: opacity .12s, transform .12s; }
.tip.on { opacity: 1; transform: none; }
.tip b { color: #fff; }
.tip .r { display: inline-block; font-weight: 600; margin-top: 4px; }

/* 结果标签 */
.badge { display: inline-flex; align-items: center; gap: 5px; font-size: 12.5px; font-weight: 600; line-height: 1; padding: 5px 8px; border-radius: 5px; white-space: nowrap; }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.b-ok { color: #23704a; background: var(--ok-soft); }
.b-part { color: #8a5d0c; background: var(--part-soft); }
.b-bad { color: #a63a2b; background: var(--bad-soft); }
.b-open { color: #56616d; background: #eceff2; }
.b-na { color: #77736b; background: #f0eee9; }
.tier { font-size: 12px; font-weight: 700; color: var(--accent-ink); background: var(--accent-soft); padding: 4px 7px; border-radius: 5px; }
.tier.T2 { color: var(--muted); background: #f0eee9; }
.tier.T3 { color: var(--faint); background: transparent; border: 1px solid var(--line); }

/* 画像：擅长 / 盲区 */
.portrait { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 760px) { .portrait { grid-template-columns: 1fr; } }
.pcard { border-radius: var(--radius); padding: 20px 22px; border: 1px solid var(--line); background: var(--panel); position: relative; overflow: hidden; }
.pcard::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; }
.pcard.good::before { background: var(--ok); }
.pcard.weak::before { background: var(--bad); }
.pcard h3 { margin-bottom: 10px; }
.pcard ul { padding-left: 1.1em; display: grid; gap: 8px; font-size: 15px; }

/* 精选判断卡片 */
.picks { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 290px), 1fr)); gap: 14px; }
.pick { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; display: flex; flex-direction: column; gap: 10px; }
.pick .top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.pick .top .date { font-variant-numeric: tabular-nums; }
.pick .said { font-size: 16px; line-height: 1.65; color: var(--ink-strong); font-weight: 500; }
.pick .real { font-size: 14.5px; line-height: 1.65; color: var(--ink); padding-top: 10px; border-top: 1px dashed var(--line-strong); }
.pick .why { font-size: 13.5px; color: var(--muted); }
.pick.ok { box-shadow: inset 0 3px 0 var(--ok); }
.pick.bad { box-shadow: inset 0 3px 0 var(--bad); }
.pick.part { box-shadow: inset 0 3px 0 var(--part); }
.picks-head { display: flex; align-items: baseline; gap: 10px; margin: 26px 0 12px; }
.picks-head:first-of-type { margin-top: 6px; }

/* 规律 / 提示块 */
.callouts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 14px; }
.callout { background: var(--panel); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0; padding: 16px 20px; }
.callout h3 { font-size: 17px; margin-bottom: 6px; }
.callout p { font-size: 15px; }

/* 时间线式列表（改口、待观察） */
.flips { display: grid; }
.flip { display: grid; grid-template-columns: 104px 1fr; gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.flip .k { font-weight: 600; color: var(--ink-strong); }
@media (max-width: 560px) { .flip { grid-template-columns: 1fr; gap: 4px; } }

/* 明细列表 */
.filters { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 16px; }
.filters input, .filters select { font: inherit; font-size: 14px; color: var(--ink); background: var(--panel); border: 1px solid var(--line-strong); border-radius: 8px; padding: 9px 12px; min-height: 44px; }
.filters input { flex: 1 1 220px; min-width: 0; }
.seg { display: inline-flex; border: 1px solid var(--line-strong); border-radius: 8px; overflow: hidden; background: var(--panel); }
.seg button { font: inherit; font-size: 14px; color: var(--muted); background: transparent; border: 0; padding: 0 14px; min-height: 42px; cursor: pointer; border-right: 1px solid var(--line); }
.seg button:last-child { border-right: 0; }
.seg button[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent-ink); font-weight: 600; }
.seg button:focus-visible, .filters input:focus-visible, .filters select:focus-visible, .more:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.count { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.rows { border-top: 1px solid var(--line); }
.row { display: grid; grid-template-columns: 92px 1fr 1.05fr; gap: 6px 22px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.row .when { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; line-height: 1.5; }
.row .when .course { display: block; margin-top: 2px; }
.row .claim { font-size: 15px; color: var(--ink-strong); line-height: 1.65; }
.row .claim .tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.row .tag { font-size: 12px; color: var(--muted); border: 1px solid var(--line); border-radius: 5px; padding: 2px 6px; }
.row .res { font-size: 14px; line-height: 1.65; }
.row .res .badge { margin-bottom: 6px; }
.row .res a { font-size: 12.5px; word-break: break-all; }
@media (max-width: 760px) {
  .row { grid-template-columns: 1fr; gap: 6px; }
  .row .when { display: flex; gap: 10px; }
  .row .when .course { margin: 0; }
}
.more { display: block; margin: 20px auto 0; font: inherit; font-size: 15px; color: var(--accent-ink); background: var(--panel); border: 1px solid var(--line-strong); border-radius: 8px; padding: 10px 22px; min-height: 44px; cursor: pointer; }
.more:hover { border-color: var(--accent); }

/* 专题首页：三位老师卡片 */
.teachers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 1280px) { .teachers { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 680px) { .teachers { grid-template-columns: 1fr; } }
.tcard { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 22px 22px 20px; display: flex; flex-direction: column; gap: 14px; color: inherit; border-bottom: 1px solid var(--line); transition: border-color .15s, transform .15s, box-shadow .15s; }
.tcard:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(40, 40, 30, .07); color: inherit; }
.tcard .name { font-size: 24px; font-weight: 700; color: var(--ink-strong); line-height: 1.2; }
.tcard .scope { font-size: 13px; color: var(--muted); margin-top: 4px; }
.tcard .big { display: flex; gap: 22px; }
.tcard .big div { display: flex; flex-direction: column; }
.tcard .big .v { font-size: 30px; font-weight: 650; color: var(--ink-strong); line-height: 1.15; }
.tcard .big .l { font-size: 12.5px; color: var(--muted); }
.tcard .trait { font-size: 14.5px; line-height: 1.6; display: grid; gap: 6px; }
.tcard .trait span { display: block; padding-left: 18px; position: relative; }
.tcard .trait span::before { content: ""; position: absolute; left: 2px; top: .62em; width: 8px; height: 8px; border-radius: 50%; }
.tcard .trait .g::before { background: var(--ok); }
.tcard .trait .w::before { background: var(--bad); }
.tcard .go { margin-top: auto; font-size: 14.5px; font-weight: 600; color: var(--accent-ink); }
.minibar { display: flex; height: 10px; border-radius: 5px; overflow: hidden; gap: 2px; background: var(--bg); }
.minibar span { display: block; height: 100%; }

.lessons { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 960px) { .lessons { grid-template-columns: 1fr; } }
.lesson { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.lesson { border-top: 3px solid var(--accent); }
.lesson h3 { margin-bottom: 8px; }
.lesson p { font-size: 15px; }

.method { font-size: 14.5px; color: var(--ink); }
.method ul { padding-left: 1.2em; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); gap: 8px 40px; }
footer.end { padding: 36px 0 90px; color: var(--muted); font-size: 13.5px; border-top: 1px solid var(--line); }
.next { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-top: 8px; }
.next a { display: block; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); padding: 14px 16px; color: var(--ink-strong); font-weight: 600; }
.next a span { display: block; font-weight: 400; color: var(--muted); font-size: 13px; }
.next a:hover { border-color: var(--accent); }
.noscript { padding: 14px 16px; background: var(--part-soft); border-radius: 8px; font-size: 14px; }