/* ============================================================
   文科生学 NLP · style.css
   设计原则：清爽留白、圆角卡片、青绿主色、零外部依赖
   ============================================================ */

:root {
  --bg: #f7f9f8;
  --card: #ffffff;
  --ink: #243331;
  --muted: #667672;
  --line: #e3e9e6;
  --soft: #eef3f1;
  --brand: #0f9d8c;
  --brand-ink: #0b7a6d;
  --brand-soft: #e2f4f1;
  --good: #2e9e5b;
  --good-soft: #e7f5ec;
  --warn: #c47f17;
  --warn-soft: #fdf3e0;
  --skip: #8a9591;
  --skip-soft: #eef0ef;
  --code-bg: #f3f6f5;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "PingFang SC", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --radius: 16px;
  --shadow: 0 1px 3px rgba(30, 50, 45, 0.06), 0 8px 24px rgba(30, 50, 45, 0.05);
}

[data-theme="dark"] {
  --bg: #101a18;
  --card: #182623;
  --ink: #e4ece9;
  --muted: #93a39e;
  --line: #263733;
  --soft: #1e2f2b;
  --brand: #2cc7b2;
  --brand-ink: #4fd8c5;
  --brand-soft: #173b36;
  --good: #4cc27b;
  --good-soft: #17351f;
  --warn: #e0a13c;
  --warn-soft: #3a2d13;
  --skip: #7d8c87;
  --skip-soft: #202b28;
  --code-bg: #13201d;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 .5em; }
p { margin: .4em 0; }
code { font-family: var(--mono); font-size: .88em; background: var(--soft); padding: .1em .4em; border-radius: 5px; }
img { max-width: 100%; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--brand); color: #fff; padding: .5em 1em; border-radius: 0 0 8px 0; z-index: 99;
}
.skip-link:focus { left: 0; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto;
  display: flex; align-items: center; gap: 1rem;
  padding: .6rem 1.2rem;
}
.brand {
  display: inline-flex; align-items: center; gap: .5em;
  font-weight: 700; font-size: 1.05rem; color: var(--ink); white-space: nowrap;
}
.brand:hover { text-decoration: none; }
.brand-mark { font-size: 1.2em; }
.main-nav { display: flex; gap: .15rem; margin-left: auto; flex-wrap: wrap; }
.nav-link {
  padding: .42em .8em; border-radius: 9px;
  font-size: .92rem; color: var(--muted); transition: background .15s, color .15s;
}
.nav-link:hover { background: var(--soft); color: var(--ink); text-decoration: none; }
.nav-link.active { background: var(--brand-soft); color: var(--brand-ink); font-weight: 600; }
.topbar-actions { display: flex; gap: .4rem; margin-left: .5rem; }
.icon-btn {
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  width: 36px; height: 36px; border-radius: 10px; cursor: pointer; font-size: 1rem;
  display: inline-flex; align-items: center; justify-content: center;
}
.icon-btn:hover { border-color: var(--brand); }

/* ---------- 页面骨架 ---------- */
.container { max-width: 1120px; margin: 0 auto; padding: 1.6rem 1.2rem 3rem; }
.page { display: none; }
.page.active { display: block; animation: fadein .25s ease; }
@keyframes fadein { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.page-head { margin: 1.2rem 0 1.6rem; max-width: 780px; }
.crumb {
  display: inline-block; font-size: .78rem; letter-spacing: .12em;
  color: var(--brand-ink); background: var(--brand-soft);
  padding: .2em .8em; border-radius: 99px; margin-bottom: .7em; font-weight: 600;
}
.page-head h2 { font-size: 2rem; }
.lede { color: var(--muted); font-size: 1.02rem; }
.sec-title { margin: 2.4rem 0 1rem; font-size: 1.35rem; }
.muted { color: var(--muted); }
.small { font-size: .84rem; }

/* ---------- 进度条 ---------- */
.progress { display: flex; align-items: center; gap: .7em; margin: .9em 0 0; max-width: 420px; }
.bar-track { flex: 1; height: 9px; border-radius: 99px; background: var(--soft); overflow: hidden; }
.bar-track.big { height: 12px; }
.bar-fill { height: 100%; width: 0%; border-radius: 99px; background: linear-gradient(90deg, var(--brand), #35b8a5); transition: width .4s ease; }
.progress-num { font-size: .82rem; color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block; padding: .62em 1.4em; border-radius: 12px;
  font-size: .95rem; font-weight: 600; cursor: pointer; border: 1px solid transparent;
  transition: transform .12s, box-shadow .12s; font-family: var(--sans);
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn.primary { background: var(--brand); color: #fff; box-shadow: 0 4px 14px color-mix(in srgb, var(--brand) 35%, transparent); }
.btn.primary:hover { background: var(--brand-ink); color: #fff; }
.btn.ghost { background: var(--card); border-color: var(--line); color: var(--ink); }
.btn.ghost:hover { border-color: var(--brand); color: var(--brand-ink); }

.mini-btn {
  font-size: .76rem; padding: .3em .8em; border-radius: 8px;
  border: 1px solid var(--line); background: var(--card); color: var(--muted); cursor: pointer;
}
.mini-btn:hover { color: var(--brand-ink); border-color: var(--brand); }

/* ---------- 首页 hero ---------- */
.hero { text-align: center; padding: 2.6rem 0 1.4rem; }
.hero-chip {
  display: inline-block; font-size: .82rem; color: var(--brand-ink);
  background: var(--brand-soft); padding: .3em 1em; border-radius: 99px; margin-bottom: 1.1em;
}
.hero h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); margin-bottom: .4em; }
.hero h1 em { font-style: normal; color: var(--brand-ink); }
.hero-lede { max-width: 640px; margin: 0 auto 1.6em; color: var(--muted); font-size: 1.05rem; }
.hero-cta { display: flex; gap: .8rem; justify-content: center; flex-wrap: wrap; margin-bottom: 2.2rem; }

.overall-box {
  max-width: 560px; margin: 0 auto; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.4rem;
  box-shadow: var(--shadow); text-align: left;
}
.overall-text { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: .5em; }
.overall-text strong { font-size: 1.02rem; }
.overall-text span { color: var(--brand-ink); font-weight: 700; font-variant-numeric: tabular-nums; }
.overall-box .small { margin-top: .5em; }

/* ---------- 卡片网格 ---------- */
.grid-cards { display: grid; gap: 1rem; }
.mod-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.mod-card {
  display: flex; gap: .9rem; align-items: flex-start;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.1rem 1.2rem; color: var(--ink); box-shadow: var(--shadow);
  transition: transform .15s, border-color .15s;
}
.mod-card:hover { text-decoration: none; transform: translateY(-2px); border-color: var(--brand); }
.mod-icon { font-size: 1.7rem; line-height: 1; margin-top: .1em; }
.mod-body { flex: 1; }
.mod-body h3 { font-size: 1.05rem; margin-bottom: .25em; }
.mod-body p { font-size: .87rem; color: var(--muted); margin-bottom: .6em; }
.mod-card .progress { margin: 0; }

.fit-grid { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.fit-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.2rem 1.3rem; display: flex; gap: .8rem; align-items: flex-start; box-shadow: var(--shadow);
}
.fit-card span { font-size: 1.5rem; }
.fit-card p { margin: 0; font-size: .93rem; color: var(--muted); }

.how-to { max-width: 720px; }
.how-to ol { margin: .4em 0 0; padding-left: 1.4em; }
.how-to li { margin: .25em 0; }
.how-to em { font-style: normal; color: var(--brand-ink); font-weight: 600; }

/* ---------- 路线图 ---------- */
.paths { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; align-items: start; }
.path {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1.2rem; box-shadow: var(--shadow); position: relative;
}
.path.reco { border: 2px solid var(--brand); box-shadow: 0 10px 34px color-mix(in srgb, var(--brand) 16%, transparent); }
.ribbon {
  position: absolute; top: -13px; left: 20px;
  background: var(--brand); color: #fff; font-size: .8rem; font-weight: 700;
  padding: .28em 1em; border-radius: 99px; box-shadow: 0 3px 10px color-mix(in srgb, var(--brand) 40%, transparent);
}
.path-head h3 { font-size: 1.18rem; margin-bottom: .4em; }
.path-meta { display: flex; gap: .5rem; flex-wrap: wrap; }
.path-aim { font-size: .92rem; color: var(--muted); border-left: 3px solid var(--brand-soft); padding-left: .8em; }

.chip {
  display: inline-block; font-size: .76rem; color: var(--muted);
  background: var(--soft); border-radius: 99px; padding: .18em .8em; white-space: nowrap;
}

.steps { list-style: none; margin: 1.1rem 0 0; padding: 0; }
.step { display: grid; grid-template-columns: auto 1fr; gap: .9em; padding: .55em 0; position: relative; }
.step:not(:last-child)::before {
  content: ""; position: absolute; left: 15px; top: 46px; bottom: -12px;
  width: 2px; background: var(--line);
}
.step > div { min-width: 0; }
.step-head { display: flex; align-items: center; gap: .6em; flex-wrap: wrap; margin-bottom: .15em; }
.step-head strong { font-size: .98rem; }
.step p { font-size: .87rem; color: var(--muted); margin: 0; }

.compare-card { margin-top: 1.6rem; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem 1.5rem; box-shadow: var(--shadow); }
.table-wrap { overflow-x: auto; }
.compare-card table { width: 100%; border-collapse: collapse; font-size: .9rem; min-width: 480px; }
.compare-card th, .compare-card td { padding: .65em .9em; text-align: left; border-bottom: 1px solid var(--line); }
.compare-card thead th { color: var(--brand-ink); font-size: .88rem; }
.compare-card tbody th { color: var(--muted); font-weight: 600; white-space: nowrap; }
.compare-card td { color: var(--ink); }

/* ---------- 徽标 ---------- */
.badge {
  display: inline-block; font-size: .74rem; font-weight: 700;
  padding: .22em .8em; border-radius: 99px; white-space: nowrap;
}
.b-must { background: var(--good-soft); color: var(--good); }
.b-rec { background: var(--brand-soft); color: var(--brand-ink); }
.b-core { background: var(--brand); color: #fff; }
.b-know { background: var(--warn-soft); color: var(--warn); }
.b-skip { background: var(--skip-soft); color: var(--skip); }
.legend { display: flex; gap: .5rem; margin-top: 1em; flex-wrap: wrap; }

/* ---------- 知识卡片 ---------- */
.group-head { margin: 2.4rem 0 1.1rem; max-width: 780px; }
.group-head h3 { font-size: 1.25rem; display: flex; align-items: baseline; gap: .8em; flex-wrap: wrap; }
.stars { font-size: .78rem; color: var(--warn); font-weight: 700; letter-spacing: .05em; }
.group-head p { color: var(--muted); font-size: .93rem; }

.kgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 1rem; }
.kcard {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.15rem 1.25rem; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: .55rem;
}
.kcard.core { border-color: color-mix(in srgb, var(--brand) 55%, var(--line)); }
.kcard.skip-card { background: var(--skip-soft); border-style: dashed; }
.kcard.wide { grid-column: 1 / -1; }
.kcard.done { border-color: var(--good); background: color-mix(in srgb, var(--good-soft) 55%, var(--card)); }
.kcard-head { display: flex; align-items: center; justify-content: space-between; gap: .8em; flex-wrap: wrap; }
.kcard-head h4 { margin: 0; font-size: 1.02rem; }
.k-oneline { font-size: .93rem; margin: 0; }
.k-meta { margin: 0; display: grid; gap: .45em; }
.k-meta > div { display: grid; grid-template-columns: 7.5em 1fr; gap: .6em; font-size: .86rem; }
.k-meta dt { color: var(--brand-ink); font-weight: 600; }
.k-meta dd { margin: 0; color: var(--muted); }
.kcard .check-btn { margin-top: auto; align-self: flex-start; }

.analogy {
  background: var(--brand-soft); border-radius: 10px; padding: .7em .9em;
  font-size: .9rem; margin: 0; color: var(--ink);
}
.analogy em { font-style: normal; font-weight: 700; color: var(--brand-ink); }

.concept-grid .kcard.warn-card { grid-column: 1 / -1; border-color: color-mix(in srgb, var(--warn) 55%, var(--line)); }
.warn-card .analogy { background: var(--warn-soft); }

.formula {
  font-family: Georgia, "Times New Roman", "Songti SC", serif;
  text-align: center; font-size: 1.12rem; margin: .2em 0; color: var(--ink);
}
.frac { display: inline-flex; flex-direction: column; vertical-align: middle; text-align: center; margin: 0 .3em; font-size: .92em; }
.frac span:first-child { border-bottom: 1.5px solid currentColor; padding: 0 .4em .12em; }
.frac span:last-child { padding: .12em .4em 0; }

/* ---------- 完成按钮 ---------- */
.check-btn {
  display: inline-flex; align-items: center; gap: .5em;
  font-size: .82rem; font-family: var(--sans); cursor: pointer;
  color: var(--muted); background: var(--soft); border: 1px solid var(--line);
  padding: .4em 1em; border-radius: 99px; transition: all .15s;
}
.check-btn:hover { border-color: var(--good); color: var(--good); }
.check-btn .ck {
  width: 15px; height: 15px; border-radius: 50%;
  border: 1.5px solid var(--muted); display: inline-flex; align-items: center; justify-content: center;
  font-size: 10px; line-height: 1; color: transparent; flex: none;
}
.check-btn[aria-pressed="true"] { background: var(--good-soft); border-color: var(--good); color: var(--good); font-weight: 600; }
.check-btn[aria-pressed="true"] .ck { background: var(--good); border-color: var(--good); color: #fff; }
.check-btn[aria-pressed="true"] .ck::after { content: "✓"; }
.check-btn.round {
  width: 32px; height: 32px; padding: 0; justify-content: center;
  border-radius: 50%; position: relative; z-index: 1; background: var(--card);
}
.check-btn.round .ck { width: 17px; height: 17px; }
.check-btn.round[aria-pressed="true"] { background: var(--good-soft); }

/* ---------- 提示框 ---------- */
.callout {
  border-radius: var(--radius); padding: 1.1rem 1.3rem; margin: 1.8rem 0;
  font-size: .93rem; border: 1px solid var(--line); background: var(--card);
}
.c-info { background: var(--brand-soft); border-color: color-mix(in srgb, var(--brand) 30%, transparent); }
.c-tip { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 30%, transparent); }
.c-tip strong { color: var(--warn); }
.c-info strong { color: var(--brand-ink); }

/* ---------- 代码块 ---------- */
.code-block { margin: .8rem 0; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--code-bg); }
.code-head {
  display: flex; align-items: center; gap: .5rem;
  padding: .45em .8em; border-bottom: 1px solid var(--line); background: var(--card);
}
.code-title { font-family: var(--mono); font-size: .78rem; color: var(--muted); margin-right: auto; }
.code-block pre { margin: 0; padding: .9em 1em; overflow-x: auto; }
.code-block code { font-family: var(--mono); font-size: .82rem; line-height: 1.7; background: none; padding: 0; color: var(--ink); }

/* ---------- 实验室 ---------- */
.proj {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem 1.6rem; margin-bottom: 2rem; box-shadow: var(--shadow);
}
.proj-head { display: flex; justify-content: space-between; align-items: baseline; gap: 1em; flex-wrap: wrap; }
.proj-head h3 { font-size: 1.3rem; margin-bottom: .3em; }
.proj-head .chip { margin-left: .4rem; }
.proj-use { font-size: .86rem; color: var(--muted); }
.proj > p { font-size: .94rem; max-width: 820px; }

.lab {
  border: 1.5px dashed color-mix(in srgb, var(--brand) 50%, var(--line));
  border-radius: 14px; padding: 1.1rem 1.2rem; margin: 1.1rem 0;
  background: color-mix(in srgb, var(--brand-soft) 30%, var(--card));
}
.lab-title { font-size: .88rem; font-weight: 700; color: var(--brand-ink); margin-bottom: .8em; }
.lab-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: .8rem; }
.lab-label { display: block; font-size: .8rem; color: var(--muted); margin-bottom: .8rem; }
.lab-grid .lab-label { margin-bottom: 0; }
.lab textarea, .lab select {
  width: 100%; margin-top: .3em;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--card); color: var(--ink);
  font-family: var(--mono); font-size: .8rem; line-height: 1.65;
  padding: .55em .7em; resize: vertical;
}
.lab textarea { min-height: 92px; }
.lab textarea:focus, .lab select:focus { outline: 2px solid color-mix(in srgb, var(--brand) 55%, transparent); border-color: var(--brand); }
.lab-actions { display: flex; gap: .7rem; align-items: center; flex-wrap: wrap; margin: .4rem 0 .3rem; }
.mode-label { display: inline-flex; align-items: center; gap: .5em; font-size: .84rem; color: var(--muted); }
.mode-label select { margin-top: 0; width: auto; }

/* ---------- 实验室：单行输入 / 标注一致性 ---------- */
.lab input[type="text"] {
  width: auto; min-width: 4.5em; margin-top: 0;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--card); color: var(--ink);
  font-family: var(--mono); font-size: .9rem;
  padding: .4em .6em;
}
.lab input[type="text"]:focus { outline: 2px solid color-mix(in srgb, var(--brand) 55%, transparent); border-color: var(--brand); }
.kappa-grid { display: grid; gap: .45rem; margin-bottom: .4rem; }
.kappa-row { display: grid; grid-template-columns: 4.6em 1fr 1fr; gap: .6rem; align-items: center; }
.kappa-row .item-name { font-size: .78rem; color: var(--muted); font-family: var(--mono); }
.kappa-row select { margin-top: 0; padding: .4em .6em; }
.kappa-head { font-size: .76rem; color: var(--muted); margin-bottom: .15rem; }
.kappa-head span:not(:first-child) { text-align: center; }
@media (max-width: 560px) { .kappa-row { grid-template-columns: 3.4em 1fr 1fr; } }

.result { margin-top: .8rem; }
.result h4 { font-size: .95rem; margin: .8em 0 .4em; }
.result .note { font-size: .85rem; color: var(--muted); }
.verdict {
  background: var(--brand-soft); border-radius: 12px; padding: .8em 1em;
  font-size: .95rem; margin-bottom: .9rem;
}
.verdict strong { color: var(--brand-ink); }

.stat-chips { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: .6rem; margin: .8rem 0 1.2rem; }
.stat-chip { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: .6em .8em; }
.stat-chip b { display: block; font-size: 1.15rem; color: var(--brand-ink); font-variant-numeric: tabular-nums; }
.stat-chip span { font-size: .76rem; color: var(--muted); }

.barlist { display: grid; gap: 5px; }
.bar-row { display: grid; grid-template-columns: 6.5em 1fr 4.2em; align-items: center; gap: .7em; font-size: .84rem; }
.bar-row .tok { font-family: var(--mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-row .num { text-align: right; color: var(--muted); font-variant-numeric: tabular-nums; }
.bar-track.mini { height: 9px; }

table.simmat { border-collapse: separate; border-spacing: 3px; font-size: .82rem; margin: .6rem 0; }
.simmat th { font-weight: 600; color: var(--muted); white-space: nowrap; padding: .35em .5em; }
.simmat td {
  padding: .42em .5em; text-align: center; border-radius: 7px;
  font-variant-numeric: tabular-nums; min-width: 3.2em;
}
.simmat td.diag { color: var(--muted); background: var(--soft); }
.simmat .row-label { text-align: left; color: var(--ink); white-space: nowrap; }

/* ---------- 资源清单 ---------- */
.res-cat { margin: 2rem 0 1.2rem; }
.res-cat > h3 { font-size: 1.15rem; margin-bottom: .8em; }
.res-list { display: grid; gap: .7rem; }
.res-item {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: .9rem 1.2rem; box-shadow: var(--shadow);
}
.res-name { font-weight: 700; font-size: .98rem; display: flex; align-items: center; gap: .5em; flex-wrap: wrap; }
.res-item p { font-size: .88rem; color: var(--muted); margin: .3em 0 0; }
.pill {
  font-size: .7rem; font-weight: 600; color: var(--brand-ink);
  background: var(--brand-soft); padding: .15em .7em; border-radius: 99px;
}

/* ---------- 环境选项 ---------- */
.env-opts { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: .9rem; margin: .6rem 0 .4rem; }
.env-opt { background: var(--soft); border-radius: 12px; padding: .9rem 1.1rem; }
.env-opt h5 { margin: 0 0 .3em; font-size: .95rem; }
.env-opt p { font-size: .86rem; color: var(--muted); margin: 0; }

/* ---------- 翻页 ---------- */
.pager { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2.6rem; }
.pager a {
  flex: 1; background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: .8rem 1.1rem; color: var(--ink); font-size: .9rem; max-width: 46%;
}
.pager a:hover { text-decoration: none; border-color: var(--brand); }
.pager a small { display: block; color: var(--muted); font-size: .74rem; }
.pager a.next { text-align: right; margin-left: auto; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--card); margin-top: 2rem; }
.footer-inner { max-width: 1120px; margin: 0 auto; padding: 1.8rem 1.2rem 2.2rem; }
.footer-inner p { margin: .3em 0; }

/* ---------- 页头元信息 / 实时徽标 ---------- */
.head-meta { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: 1em; align-items: center; }
.live-badge {
  display: inline-block; font-size: .76rem; font-weight: 700;
  color: var(--brand-ink); background: var(--brand-soft);
  border: 1px solid color-mix(in srgb, var(--brand) 35%, transparent);
  padding: .22em .8em; border-radius: 99px;
}

/* ---------- 知识库：筛选栏 ---------- */
.filter-bar {
  display: flex; gap: .8rem; flex-wrap: wrap; align-items: center;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: .9rem 1.1rem; margin: 1.4rem 0 .4rem; box-shadow: var(--shadow);
}
#kbSearch {
  flex: 1 1 240px; min-width: 200px;
  padding: .55em .9em; border: 1px solid var(--line); border-radius: 12px;
  background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: .92rem;
}
#kbSearch:focus { outline: 2px solid color-mix(in srgb, var(--brand) 55%, transparent); border-color: var(--brand); }
.filter-chips { display: flex; gap: .4rem; flex-wrap: wrap; }
.chip-btn {
  font-size: .8rem; font-family: var(--sans); cursor: pointer;
  padding: .35em .9em; border-radius: 99px;
  border: 1px solid var(--line); background: var(--card); color: var(--muted);
  transition: all .15s;
}
.chip-btn:hover { border-color: var(--brand); color: var(--brand-ink); }
.chip-btn.active { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 600; }

/* ---------- 知识库：资源卡片 ---------- */
.kb-grid { grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); }
.kb-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.1rem 1.25rem; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: .5rem;
  transition: transform .15s, border-color .15s;
}
.kb-card:hover { transform: translateY(-2px); border-color: var(--brand); }
.kb-head { display: flex; align-items: flex-start; justify-content: space-between; gap: .8em; }
.kb-head h4 { margin: 0; font-size: 1rem; }
.kb-head h4 a { color: var(--ink); }
.kb-head h4 a:hover { color: var(--brand-ink); }
.stars-badge {
  font-weight: 700; color: var(--warn); background: var(--warn-soft);
  padding: .2em .7em; border-radius: 99px; font-size: .76rem; white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.kb-desc { font-size: .88rem; color: var(--ink); margin: 0; }
.kb-why {
  background: var(--brand-soft); border-radius: 10px;
  padding: .55em .8em; font-size: .84rem; margin: 0; color: var(--ink);
}
.kb-why span { font-weight: 700; color: var(--brand-ink); margin-right: .4em; }
.kb-foot { display: flex; flex-wrap: wrap; gap: .35rem; align-items: center; margin-top: auto; padding-top: .2rem; }
.kb-foot .pill { font-size: .68rem; }
.chip.mono { font-family: var(--mono); font-size: .7rem; }
.kb-empty { text-align: center; padding: 3rem 1rem; color: var(--muted); background: var(--card); border: 1px dashed var(--line); border-radius: var(--radius); }

/* ---------- 前沿动态 ---------- */
.fe-h { font-size: 1.25rem; margin: 2.4rem 0 1.1rem; display: flex; align-items: baseline; gap: .8em; flex-wrap: wrap; }
.pick-list { display: grid; gap: .6rem; }
.pick-card {
  display: flex; gap: .9em; align-items: flex-start;
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: .85rem 1.1rem; box-shadow: var(--shadow);
}
.pick-date {
  font-size: .76rem; color: var(--muted); background: var(--soft);
  padding: .3em .7em; border-radius: 9px; white-space: nowrap; margin-top: .2em;
  font-variant-numeric: tabular-nums;
}
.pick-body { flex: 1; min-width: 0; }
.pick-body a { font-weight: 700; }
.pick-label {
  font-size: .7rem; font-weight: 600; color: var(--brand-ink);
  background: var(--brand-soft); padding: .12em .6em; border-radius: 99px; margin-left: .5em;
}
.pick-body p { font-size: .87rem; color: var(--muted); margin: .2em 0 0; }

.live-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.3rem; box-shadow: var(--shadow); }
.live-note { margin: .7rem 0 0; }
.live-table { width: 100%; border-collapse: collapse; font-size: .88rem; min-width: 480px; }
.live-table th { text-align: left; color: var(--muted); font-weight: 600; font-size: .78rem; padding: .4em .8em; border-bottom: 1px solid var(--line); }
.live-table td { padding: .55em .8em; border-bottom: 1px solid var(--line); }
.live-table tr:last-child td { border-bottom: none; }
.live-table a { font-weight: 600; }
.live-stars { font-weight: 700; color: var(--brand-ink); font-variant-numeric: tabular-nums; white-space: nowrap; }
.live-table .bar-track.mini { width: 100%; }

.trend-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.trend-card { gap: .6rem; }
.trend-card .kb-desc { color: var(--muted); }
.trend-ref {
  font-size: .78rem; font-weight: 600; color: var(--brand-ink);
  background: var(--soft); padding: .3em .8em; border-radius: 99px;
}
.trend-ref:hover { background: var(--brand-soft); text-decoration: none; }

.feed-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); display: grid; gap: .9rem; }
.feed-card {
  display: block; background: var(--card); border: 1px solid var(--line);
  border-radius: 14px; padding: .95rem 1.15rem; box-shadow: var(--shadow); color: var(--ink);
  transition: transform .15s, border-color .15s;
}
.feed-card:hover { text-decoration: none; transform: translateY(-2px); border-color: var(--brand); }
.feed-card strong { font-size: .93rem; color: var(--brand-ink); }
.feed-card p { font-size: .84rem; color: var(--muted); margin: .35em 0 0; }

/* ---------- 响应式 ---------- */
.menu-btn { display: none; }

@media (max-width: 900px) {
  .menu-btn { display: inline-flex; }
  .main-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; flex-wrap: nowrap;
    background: var(--card); border-bottom: 1px solid var(--line);
    padding: .6rem .9rem; gap: .1rem;
    box-shadow: 0 14px 30px rgba(20, 40, 35, .12);
  }
  .topbar.nav-open .main-nav { display: flex; }
  .main-nav .nav-link { padding: .7em .9em; font-size: .98rem; }
  .paths { grid-template-columns: 1fr; }
  .page-head h2 { font-size: 1.6rem; }
}

@media (max-width: 560px) {
  .container { padding: 1.1rem .9rem 2.4rem; }
  .nav-inner { padding: .55rem .9rem; }
  .k-meta > div { grid-template-columns: 1fr; gap: .1em; }
  .k-meta dt { margin-top: .35em; }
  .bar-row { grid-template-columns: 5em 1fr 3.6em; }
  .proj { padding: 1.1rem 1rem; }
  .path { padding: 1.3rem 1.1rem 1rem; }
  .hero { padding-top: 1.6rem; }
  .pager a { max-width: none; }
  .simmat { font-size: .74rem; }
  .pick-card { flex-direction: column; gap: .4rem; padding: .8rem .9rem; }
  .pick-date { align-self: flex-start; }
  .kb-card { padding: 1rem 1rem; }
  .filter-bar { padding: .8rem .9rem; }
  .live-card { padding: .9rem 1rem; }
}

/* ---------- 备份与保存状态 ---------- */
.backup-row { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin-top: .6rem; }
.save-status { font-size: .8rem; font-weight: 600; }
.save-status.save-ok { color: var(--good, #2e9e5b); }
.save-status.save-warn { color: #c0392b; }