/* scholar.css — 学术纸面调（与 reading.css 同套设计 token，无 API、无 drawer）
   改色/改字号请优先对齐 reading.css 的 :root token，保持站内的"纸面"一致感。 */

:root {
  color-scheme: dark;
  --page: #0b1210;
  --panel: #0f1a14;
  --panel-hover: #152119;
  --text: #e6edf3;
  --text-soft: #b7c0ca;
  --muted: #8b949e;
  --line: #1e3428;
  --line-soft: #18291f;
  --accent: #7ee787;
  --accent-soft: rgba(126, 231, 135, 0.16);
  --danger: #ff7b72;
  --pending: #f0c674;
  --header-height: 64px;
  --reader-width: 880px;
  --sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "Cascadia Code", Consolas, monospace;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--page); scroll-behavior: smooth; }
body { min-height: 100vh; margin: 0; background: var(--page); color: var(--text); font-family: var(--sans); line-height: 1.75; -webkit-font-smoothing: antialiased; }
button, input { color: inherit; font: inherit; }
a { color: inherit; text-decoration: none; }
code { font-family: var(--mono); }
[hidden] { display: none !important; }

.blog-header { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; justify-content: space-between; height: var(--header-height); padding: 0 24px; border-bottom: 1px solid var(--line); background: rgba(11, 18, 16, .92); backdrop-filter: blur(18px); }
.blog-brand { display: inline-flex; align-items: center; gap: 11px; }
.blog-brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 9px; color: var(--accent); font-family: var(--mono); font-size: 14px; }
.blog-brand-copy { display: grid; line-height: 1.1; }
.blog-brand-copy strong { font-size: 14px; letter-spacing: -.01em; }
.blog-brand-copy small { margin-top: 4px; color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: .14em; }
.blog-header-nav { display: flex; align-items: center; gap: 22px; color: var(--muted); font-family: var(--mono); font-size: 11px; }
.blog-header-nav a:hover, .blog-header-nav a:focus-visible { color: var(--accent); }

.eyebrow { margin: 0; color: var(--accent); font-family: var(--mono); font-size: 11px; letter-spacing: .16em; line-height: 1.4; text-transform: uppercase; }

.scholar-main { width: min(100%, var(--reader-width)); margin: 0 auto; padding: calc(var(--header-height) + 60px) 32px 84px; }

.scholar-intro h1 { margin: 14px 0 16px; font-size: clamp(2.4rem, 5.8vw, 4.4rem); line-height: 1.05; letter-spacing: -.055em; }
.scholar-lede { max-width: 56ch; margin: 0 0 36px; color: var(--text-soft); font-size: clamp(1.02rem, 1.8vw, 1.18rem); line-height: 1.78; }

.scholar-cta { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 18px; padding: 18px 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); transition: border-color 160ms ease, background 160ms ease, transform 160ms ease; }
.scholar-cta:hover, .scholar-cta:focus-visible { border-color: var(--accent); background: color-mix(in srgb, var(--accent-soft) 40%, var(--panel)); }
.scholar-cta:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.scholar-cta[data-ready="false"] { opacity: 0.85; }
.scholar-cta-glyph { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 10px; color: var(--accent); font-family: var(--mono); font-size: 14px; letter-spacing: .08em; background: color-mix(in srgb, var(--accent) 6%, var(--panel)); }
.scholar-cta-body { display: grid; gap: 4px; min-width: 0; }
.scholar-cta-body strong { color: var(--text); font-size: 1.04rem; font-weight: 600; letter-spacing: -.005em; }
.scholar-cta-body small { color: var(--muted); font: 11.5px var(--mono); letter-spacing: .04em; line-height: 1.6; }
.scholar-cta-body small code { padding: 1px 5px; border: 1px solid var(--line); border-radius: 4px; background: var(--page); color: var(--accent); font-size: .92em; }
.scholar-cta-arrow { color: var(--accent); font-family: var(--mono); font-size: 22px; }

.section-heading { display: flex; flex-direction: column; gap: 6px; margin: 0 0 22px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.section-heading h2 { margin: 6px 0 0; font-size: clamp(1.5rem, 3.4vw, 2.1rem); line-height: 1.15; letter-spacing: -.04em; }
.section-heading p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }

.paper-section { margin-top: 64px; }

.paper-card { display: grid; grid-template-columns: 220px 1fr; gap: 24px; padding: 26px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.paper-card-cover { display: flex; flex-direction: column; gap: 10px; padding: 18px; border: 1px solid var(--line); border-radius: 10px; background: var(--page); }
.paper-status { display: inline-flex; align-items: center; gap: 7px; align-self: flex-start; padding: 4px 10px; border: 1px solid var(--pending); border-radius: 999px; color: var(--pending); font-family: var(--mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }
.paper-status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--pending); box-shadow: 0 0 0 4px color-mix(in srgb, var(--pending) 20%, transparent); }
.paper-status.is-pending { color: var(--pending); }
.paper-status.is-submitted { color: var(--accent); border-color: var(--accent); }
.paper-status.is-submitted::before { background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.paper-kind { color: var(--muted); font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; }

.paper-card-body { display: grid; gap: 10px; min-width: 0; }
.paper-venue { margin: 0; color: var(--muted); font: 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.paper-headline { margin: 0; font-size: 1.3rem; line-height: 1.32; letter-spacing: -.022em; }
.paper-authors { margin: 0; color: var(--text-soft); font-size: 14px; line-height: 1.6; }
.paper-author-note { color: var(--muted); font-size: 12.5px; margin-left: 4px; }
.paper-abstract { margin: 0; color: var(--text-soft); font-size: 14.5px; line-height: 1.78; }
.paper-meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin: 8px 0 4px; padding: 14px 0; border: 1px solid var(--line); border-width: 1px 0; }
.paper-meta div { display: grid; gap: 4px; padding: 0 14px; border-left: 1px solid var(--line); }
.paper-meta div:first-child { padding-left: 0; border-left: 0; }
.paper-meta dt { color: var(--muted); font: 10px var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.paper-meta dd { margin: 0; color: var(--text); font-size: 13.5px; line-height: 1.45; }

.paper-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.paper-tag { padding: 4px 11px; border: 1px solid var(--line); border-radius: 999px; font: 11px var(--mono); letter-spacing: .08em; }
.paper-tag.tag-pending { color: var(--pending); border-color: color-mix(in srgb, var(--pending) 50%, var(--line)); }

.paper-note { margin: 18px 0 0; color: var(--muted); font: 12px var(--mono); line-height: 1.7; }
.paper-note code { padding: 1px 5px; border: 1px solid var(--line); border-radius: 4px; background: var(--panel); color: var(--accent); font-size: .92em; }

.scholar-cite { margin-top: 64px; }
.cite-block { margin: 0; padding: 18px 22px; border: 1px solid var(--line); border-radius: 10px; background: color-mix(in srgb, var(--page) 80%, var(--panel)); overflow-x: auto; font: 12.5px/1.7 var(--mono); color: var(--text-soft); }
.cite-block code { color: inherit; }
.cite-title { color: var(--text); }
.cite-note { margin: 14px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.cite-note code { padding: 1px 5px; border: 1px solid var(--line); border-radius: 4px; background: var(--panel); color: var(--accent); font: 11.5px var(--mono); }

.scholar-footer { display: flex; flex-wrap: wrap; gap: 14px 22px; justify-content: space-between; align-items: center; padding: 28px 32px; border-top: 1px solid var(--line); color: var(--muted); font: 11px var(--mono); letter-spacing: .12em; }
.scholar-footer a { color: var(--muted); transition: color 140ms ease; }
.scholar-footer a:hover, .scholar-footer a:focus-visible { color: var(--accent); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

@media (max-width: 800px) {
  .blog-header { padding-inline: 16px; }
  .blog-header-nav { gap: 16px; font-size: 10.5px; }
  .blog-header-nav a[href="blog.html"] { display: none; }
  .blog-header-nav a[href="reading.html"] { display: none; }
  .scholar-main { padding-inline: 20px; }
  .paper-card { grid-template-columns: 1fr; gap: 18px; padding: 22px 18px; }
  .paper-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 0; }
  .paper-meta div { padding: 0 12px; }
  .paper-meta div:first-child { padding-left: 12px; border-left: 1px solid var(--line); }
}

@media (max-width: 480px) {
  .scholar-main { padding-inline: 16px; padding-top: calc(var(--header-height) + 36px); }
  .scholar-cta { grid-template-columns: auto 1fr; padding: 14px 16px; gap: 12px 14px; }
  .scholar-cta-arrow { grid-column: 2; justify-self: end; }
  .paper-card { padding: 18px 14px; }
  .paper-meta { grid-template-columns: 1fr; }
  .paper-meta div { padding: 0; border-left: 0; }
  .paper-meta div:not(:last-child) { padding-bottom: 12px; border-bottom: 1px solid var(--line-soft); }
  .scholar-footer { padding-inline: 18px; }
}