/* SOLA · AI 能力进阶计划  —— 色板沿用 sola.css（已过 dataviz validator） */
:root{
  color-scheme: light;
  --page:#f9f9f7; --surface:#fcfcfb;
  --ink:#0b0b0b; --ink-2:#52514e; --muted:#898781;
  --grid:#e1e0d9; --axis:#c3c2b7; --border:rgba(11,11,11,.10);
  --wash:rgba(11,11,11,.035);
  --s1:#2a78d6; --s2:#eb6834; --s3:#1baf7a; --s4:#eda100; --s7:#4a3aa7;
  --good:#0ca30c; --warn:#fab219; --critical:#d03b3b;
  --good-ink:#006300; --warn-ink:#8a5a00; --crit-ink:#a32323;
  --radius:14px;
}
:root[data-theme="dark"]{
  color-scheme: dark;
  --page:#0d0d0d; --surface:#1a1a19;
  --ink:#ffffff; --ink-2:#c3c2b7; --muted:#898781;
  --grid:#2c2c2a; --axis:#383835; --border:rgba(255,255,255,.10);
  --wash:rgba(255,255,255,.045);
  --s1:#3987e5; --s2:#d95926; --s3:#199e70; --s4:#c98500; --s7:#9085e9;
  --good-ink:#3fc23f; --warn-ink:#f2c14e; --crit-ink:#f07a7a;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{background:var(--page);color:var(--ink);
  font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--s1)}
.wrap{max-width:1240px;margin:0 auto;padding:0 20px 72px}

/* 顶栏 */
header.top{position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--page) 88%,transparent);
  backdrop-filter:saturate(1.6) blur(12px);border-bottom:1px solid var(--border)}
.top-in{max-width:1240px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:650;white-space:nowrap}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--s1)}
.brand small{display:block;font-weight:400;font-size:11px;color:var(--muted);letter-spacing:.06em}
.tabs{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.tab{border:1px solid var(--border);background:transparent;color:var(--ink-2);padding:6px 13px;border-radius:999px;
  font-size:13px;font-family:inherit;cursor:pointer;white-space:nowrap;text-decoration:none;line-height:1.45}
.tab:hover{color:var(--ink);border-color:var(--axis)}
.tab[aria-current="page"]{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.icon-btn{border:1px solid var(--border);background:transparent;color:var(--ink-2);width:32px;height:32px;border-radius:9px;cursor:pointer;font-size:14px}

/* 版块 */
h1{font-size:28px;line-height:1.25;margin:34px 0 6px;letter-spacing:-.01em}
h2{font-size:19px;margin:36px 0 4px}
h3{font-size:15.5px;margin:0 0 6px}
.lede{color:var(--ink-2);max-width:820px;margin:0 0 6px}
.sub{color:var(--muted);font-size:13px;margin:0 0 14px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(340px,100%),1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(280px,100%),1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(min(200px,100%),1fr))}
.muted{color:var(--muted)} .ink2{color:var(--ink-2)} .small{font-size:13px}
ul.tight{margin:6px 0 0;padding-left:18px} ul.tight li{margin:3px 0}

/* 指标块 */
.stat .k{font-size:12.5px;color:var(--muted)}
.stat .v{font-size:34px;font-weight:650;line-height:1.15;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat .d{font-size:12.5px;color:var(--ink-2)}
.bar-track{height:6px;background:var(--wash);border-radius:4px;margin-top:8px;overflow:hidden}
.bar-fill{height:100%;background:var(--s1);border-radius:4px}

/* 标签 */
.chip{display:inline-flex;align-items:center;gap:5px;font-size:12px;padding:2px 9px;border-radius:999px;
  border:1px solid var(--border);color:var(--ink-2);white-space:nowrap;line-height:1.6}
.chip .sw{width:8px;height:8px;border-radius:50%}
.st{font-weight:600}
.st-missing{color:var(--crit-ink);border-color:color-mix(in srgb,var(--critical) 40%,transparent);background:color-mix(in srgb,var(--critical) 8%,transparent)}
.st-partial{color:var(--warn-ink);border-color:color-mix(in srgb,var(--warn) 50%,transparent);background:color-mix(in srgb,var(--warn) 10%,transparent)}
.st-good{color:var(--good-ink);border-color:color-mix(in srgb,var(--good) 40%,transparent);background:color-mix(in srgb,var(--good) 8%,transparent)}
.draft{border:1px dashed var(--axis);color:var(--muted)}
.lv{font-variant-numeric:tabular-nums;font-weight:600}

/* 表格 */
.tbl-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:13.5px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);vertical-align:top}
th{font-weight:600;color:var(--ink-2);font-size:12.5px;background:var(--wash);white-space:nowrap}
tr:last-child td{border-bottom:none}

/* 筛选 */
.filters{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0 16px}
.filters button{border:1px solid var(--border);background:var(--surface);color:var(--ink-2);padding:5px 12px;border-radius:999px;font:inherit;font-size:13px;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.filters button[aria-pressed="true"]{border-color:var(--ink);color:var(--ink);font-weight:600}

/* 课程卡 */
.course{display:flex;flex-direction:column;gap:8px;border-left:4px solid var(--c,var(--axis))}
.course .meta{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.course .code{font-variant-numeric:tabular-nums;font-weight:650;color:var(--ink-2)}
.course details summary{cursor:pointer;color:var(--s1);font-size:13px}
.course .row{font-size:13px} .course .row b{color:var(--ink-2);font-weight:600}

/* 难题 */
.prob{border-left:4px solid var(--axis)}
.prob .no{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.prob .cols{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:8px}
@media (max-width:720px){.prob .cols{grid-template-columns:1fr}}
.prob .lab{font-size:12px;color:var(--muted);margin-bottom:2px}
.ctag{cursor:pointer;text-decoration:none}

/* 周计划 */
.week{display:grid;grid-template-columns:120px 1fr;gap:16px}
@media (max-width:720px){.week{grid-template-columns:1fr}}
.week .wk{font-size:12px;color:var(--muted)} .week .wn{font-size:22px;font-weight:650;font-variant-numeric:tabular-nums}
.task{display:flex;gap:8px;align-items:flex-start;margin:5px 0;font-size:14px;cursor:pointer}
.task input{margin-top:4px;accent-color:var(--s1)}
.task.done span{color:var(--muted);text-decoration:line-through}
.ms{font-size:12px;font-weight:600;color:var(--s7)}

/* 案例 */
.case .nums{display:flex;gap:18px;flex-wrap:wrap;margin:8px 0}
.case .num b{display:block;font-size:22px;font-weight:650;font-variant-numeric:tabular-nums;line-height:1.2}
.case .num span{font-size:12px;color:var(--muted)}
.case .lesson{background:var(--wash);border-radius:10px;padding:9px 12px;font-size:13.5px;margin-top:6px}
.src{font-size:12px;color:var(--muted)} .src a{color:var(--muted)}

/* 图表 */
.chart{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 16px 10px;overflow-x:auto}
.chart svg{display:block}
.chart text{fill:var(--ink-2);font-size:12px;font-family:inherit}
.chart .axis-t{fill:var(--muted);font-size:11px}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-2);margin:10px 2px 2px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:5px;vertical-align:-1px}
#tip{position:fixed;pointer-events:none;z-index:99;background:var(--surface);color:var(--ink);border:1px solid var(--border);
  box-shadow:0 6px 24px rgba(0,0,0,.14);border-radius:10px;padding:8px 11px;font-size:12.5px;max-width:300px;display:none;line-height:1.5}
#tip b{display:block;margin-bottom:2px}
.mx td,.mx th{text-align:center;padding:7px 6px;border-bottom:1px solid var(--border)}
.mx td:first-child,.mx th:first-child{text-align:left;white-space:nowrap}
.mx .dot{display:inline-block;width:12px;height:12px;border-radius:50%}
.mx .hit{cursor:default;padding:8px}

pre.code{background:var(--wash);border-radius:10px;padding:12px 14px;font-size:12.5px;overflow-x:auto;margin:8px 0 0;line-height:1.55}
footer{color:var(--muted);font-size:12.5px;border-top:1px solid var(--border);margin-top:48px;padding-top:16px}
.note{border:1px dashed var(--axis);border-radius:10px;padding:10px 12px;font-size:13px;color:var(--ink-2)}
@media print{header.top{position:static}.tabs,.icon-btn{display:none}}

/* ============ 首屏 ============ */
.hero{padding:30px 0 6px}
.hero h1{font-size:clamp(26px,4.6vw,40px);margin:6px 0 10px}
.eyebrow{font-size:12.5px;color:var(--s1);font-weight:600;letter-spacing:.06em}
.cta{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 12px}
.btn{display:inline-flex;align-items:center;min-height:42px;padding:0 18px;border-radius:999px;border:1px solid var(--border);
  background:var(--surface);color:var(--ink);text-decoration:none;font-weight:600;font-size:14px}
.btn:hover{border-color:var(--axis)}
.btn.primary{background:var(--ink);color:var(--surface);border-color:var(--ink)}

/* ============ 手机版图表：竖向时间线 / 问题课程列表 ============ */
.tl{list-style:none;margin:0;padding:0}
.tl li{display:grid;grid-template-columns:52px 1fr;gap:12px;padding:11px 0;border-bottom:1px solid var(--border)}
.tl li:last-child{border-bottom:none}
.tl-w{display:flex;flex-direction:column;text-decoration:none;color:var(--ink)}
.tl-w b{font-size:17px;font-variant-numeric:tabular-nums;line-height:1.3}
.tl-w span{font-size:11.5px;color:var(--muted)}
.tl-t{font-weight:600;font-size:14px}
.tl-i{font-size:13px;border-left:3px solid var(--c);padding-left:8px;margin-top:6px;line-height:1.5}
.mxl-r{padding:11px 0;border-bottom:1px solid var(--border)}
.mxl-r:last-child{border-bottom:none}
.mxl-t{color:var(--ink);text-decoration:none;font-size:14px;font-weight:600}
.mxl-c{display:flex;gap:6px;flex-wrap:wrap;margin-top:7px}

/* ============ 手机 ============ */
@media (max-width:720px){
  .wrap{padding:0 14px calc(48px + env(safe-area-inset-bottom))}
  .top-in{padding:10px 14px 0;gap:8px}
  .brand small{display:none}
  .icon-btn{margin-left:auto;width:38px;height:38px}
  /* 导航：一行横滑，不折行 */
  .tabs{order:3;flex-basis:100%;margin:0 -14px;padding:2px 14px 10px;flex-wrap:nowrap;overflow-x:auto;
    scrollbar-width:none;-webkit-overflow-scrolling:touch;scroll-behavior:smooth}
  .tabs::-webkit-scrollbar{display:none}
  .tab{flex:none;padding:8px 14px;font-size:14px}

  .hero{padding:20px 0 0}
  .hero .lede{font-size:14.5px}
  .btn{flex:1 1 auto;justify-content:center;min-height:44px}
  .btn.primary{flex-basis:100%}
  h1{font-size:24px;margin-top:22px}
  h2{font-size:17.5px;margin-top:30px}
  .card{padding:15px}
  .g4{grid-template-columns:1fr 1fr}
  .stat .v{font-size:28px}
  .stat .k,.stat .d{font-size:12px}
  .chart{padding:6px 14px}
  .chip{white-space:normal}
  .ctag{border-radius:10px}

  /* 宽表格 → 每行一张小卡 */
  table.stack thead{display:none}
  table.stack,table.stack tbody{display:block}
  table.stack tr{display:flex;flex-wrap:wrap;align-items:center;gap:0 8px;padding:12px 14px;border-bottom:1px solid var(--border)}
  table.stack tr:last-child{border-bottom:none}
  table.stack td{display:block;flex:1 1 100%;order:2;border:none;padding:3px 0}
  table.stack td.head{flex:1 1 auto;order:0;font-size:15px}
  table.stack td.badge{flex:0 0 auto;order:1}
  table.stack td.badge:empty{display:none}
  table.stack td:not(.head):not(.badge)::before{content:attr(data-label);display:block;font-size:11.5px;color:var(--muted)}

  .week-h{display:flex;align-items:baseline;gap:4px 10px;flex-wrap:wrap}
  .week-h .wn{order:-1}
  .week-h .ms{flex-basis:100%;margin-top:0!important}
  .task{padding:5px 0;font-size:14.5px}
  .task input{width:18px;height:18px;flex:none;margin-top:3px}
  .filters{flex-wrap:nowrap;overflow-x:auto;margin:6px -14px 14px;padding:0 14px 2px;scrollbar-width:none}
  .filters::-webkit-scrollbar{display:none}
  .filters button{flex:none;min-height:38px}
  .case .nums{gap:14px}
  .case .num b{font-size:20px}
  pre.code{font-size:12px}
}
@media (max-width:360px){
  .g4{grid-template-columns:1fr}
}
.wx-share{position:absolute;left:-9999px;width:300px;height:300px}