/* ==========================================================================
   GRISTLINE — 文章页样式
   本档由 backlinks WF 产出的文章页硬编码引用（../article.css），
   class 命名对齐规格清单；样式本身依本站设计语言撰写。
   单栏版型：不使用 article-layout-grid / sidebar-widget。
   ========================================================================== */

.article-page {
  width: min(760px, calc(100% - 48px));
  margin: 0 auto;
  padding: 34px 0 72px;
}

/* --- 麵包屑 --- */
.breadcrumb {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: .66rem;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 26px;
}
.breadcrumb a { color: var(--ink-muted); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb-sep { margin: 0 8px; color: var(--rule-strong); }

/* --- 页头 --- */
.article-header { margin-bottom: 30px; }

.article-h1 {
  font-family: "Bricolage Grotesque", "Instrument Sans", sans-serif;
  font-weight: 700;
  font-size: clamp(1.95rem, 4.4vw, 2.85rem);
  line-height: 1.1;
  letter-spacing: -0.022em;
  color: var(--ink);
  margin: 0 0 18px;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-family: "DM Mono", monospace;
  font-size: .66rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 14px;
}
.card-meta .cat-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--cat-ink, var(--ink-soft));
  font-weight: 500;
}
.card-meta .cat-tag::before {
  content: "";
  width: 9px; height: 9px;
  border-radius: 2px;
  background: var(--cat-color, var(--crust-40));
}

.author-byline {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  font-family: "DM Mono", monospace;
  font-size: .68rem;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}
.author-name { color: var(--ink); font-weight: 500; }
.author-sep { color: var(--rule-strong); }

/* --- 首图 --- */
.article-hero-img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 2px;
  background: var(--paper-deep);
  margin: 28px 0 30px;
}

/* --- 导言 --- */
.article-lead {
  font-size: 1.14rem;
  line-height: 1.62;
  color: var(--ink-soft);
  margin: 0 0 30px;
  padding-left: 18px;
  border-left: 3px solid var(--crust-40);
}

/* --- 正文 --- */
.article-body { font-size: 1.02rem; line-height: 1.74; color: var(--ink); }

.article-body > p { margin: 0 0 1.35em; }

.article-body h2 {
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 700;
  font-size: 1.52rem;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 2.1em 0 .7em;
  padding-top: .55em;
  border-top: 1px solid var(--rule);
}
.article-body h3 {
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 700;
  font-size: 1.18rem;
  line-height: 1.28;
  margin: 1.75em 0 .55em;
}

.article-body a {
  color: var(--link);
  border-bottom: 1px solid rgba(53, 96, 110, .4);
}
.article-body a:hover { color: var(--link-hover); border-bottom-color: currentColor; }

.article-body ul,
.article-body ol { margin: 0 0 1.35em; padding-left: 1.35em; }
.article-body li { margin-bottom: .5em; }
.article-body li::marker { color: var(--crust-60); }

.article-body img {
  width: 100%;
  border-radius: 2px;
  margin: 1.8em 0 .7em;
}
.article-body figure { margin: 1.8em 0; }
.article-body figcaption {
  font-family: "DM Mono", monospace;
  font-size: .68rem;
  letter-spacing: .05em;
  color: var(--ink-muted);
  margin-top: .7em;
  line-height: 1.5;
}

.article-body blockquote {
  margin: 1.8em 0;
  padding: 4px 0 4px 22px;
  border-left: 3px solid var(--crust-60);
  color: var(--ink-soft);
  font-size: 1.06rem;
}
.article-body blockquote p:last-child { margin-bottom: 0; }

.article-body code {
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: .88em;
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: .12em .38em;
}
.article-body pre {
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 16px 18px;
  overflow-x: auto;
  margin: 0 0 1.35em;
}
.article-body pre code { background: none; border: 0; padding: 0; }

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.6em;
  font-size: .94rem;
}
.article-body th,
.article-body td {
  text-align: left;
  padding: 11px 13px;
  border-bottom: 1px solid var(--rule);
}
.article-body th {
  font-family: "DM Mono", monospace;
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  border-bottom-color: var(--rule-strong);
}

.article-body hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 2.4em 0;
}

/* --- 作者卡 --- */
.author-bio-card {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  background: var(--paper-deep);
  border-left: 3px solid var(--crust-60);
  border-radius: 0 2px 2px 0;
  padding: 22px 24px;
  margin: 46px 0 0;
}
.author-bio-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--rule);
}
.author-bio-name {
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--ink);
  margin: 0 0 3px;
}
.author-bio-title {
  font-family: "DM Mono", monospace;
  font-size: .64rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 9px;
}
.author-bio-text {
  margin: 0;
  font-size: .91rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* --- FAQ --- */
.faq-section { margin-top: 52px; }
.faq-section h2 {
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -0.015em;
  padding-bottom: 13px;
  border-bottom: 2px solid var(--ink);
  margin: 0 0 6px;
}
#faq-items { margin: 0; }
#faq-items .faq-item,
#faq-items > div {
  border-bottom: 1px solid var(--rule);
  padding: 19px 0;
}
#faq-items h3,
#faq-items .faq-q {
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 700;
  font-size: 1.04rem;
  line-height: 1.34;
  color: var(--ink);
  margin: 0 0 8px;
}
#faq-items p,
#faq-items .faq-a {
  margin: 0;
  font-size: .95rem;
  line-height: 1.66;
  color: var(--ink-soft);
}

/* --- 页尾行动区 --- */
.cta-banner {
  margin: 52px 0 0;
  padding: 28px 30px 30px;
  background: var(--ink);
  color: var(--paper-deep);
  border-radius: 2px;
}
.cta-banner h2,
.cta-banner h3 {
  font-family: "Bricolage Grotesque", sans-serif;
  color: var(--paper);
  font-size: 1.26rem;
  letter-spacing: -0.015em;
  margin: 0 0 9px;
}
.cta-banner p {
  margin: 0 0 18px;
  color: rgba(251, 247, 240, .72);
  font-size: .94rem;
  max-width: 52ch;
}
.cta-banner a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: var(--crust-40);
  color: var(--ink);
  font-family: "DM Mono", monospace;
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 13px 24px;
  border-radius: 2px;
}
.cta-banner a:hover { background: var(--crust-20); color: var(--ink); }

/* --- 延伸阅读 --- */
.related-section {
  margin-top: 54px;
  padding-top: 26px;
  border-top: 2px solid var(--ink);
}
.related-section > h2 {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: 1.24rem;
  letter-spacing: -0.015em;
  margin: 0 0 20px;
}
.rel-card {
  display: block;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}
.rel-card:last-child { border-bottom: 0; }
.rel-title {
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 700;
  font-size: 1.04rem;
  line-height: 1.3;
  color: var(--ink);
  display: block;
  margin-bottom: 5px;
}
.rel-card:hover .rel-title { color: var(--crust-80); }
.rel-card .rel-meta {
  font-family: "DM Mono", monospace;
  font-size: .63rem;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

@media (max-width: 640px) {
  .article-page { width: calc(100% - 36px); padding-top: 26px; }
  .article-lead { font-size: 1.06rem; padding-left: 14px; }
  .author-bio-card { grid-template-columns: 1fr; gap: 13px; padding: 20px; }
  .cta-banner { padding: 24px 22px 26px; }
}

/* blog card component (mirrored from style-base.css for single-file self-sufficiency) */
.article-card {
  background: transparent;
  display: flex;
  flex-direction: column;
}
.article-thumb {
  display: block;
  overflow: hidden;
  border-radius: 2px;
  background: var(--paper-deep);
  margin-bottom: 16px;
}
.article-thumb img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform .6s cubic-bezier(.2, .7, .3, 1);
}
.article-card:hover .article-thumb img { transform: scale(1.03); }

.article-card .article-body { display: flex; flex-direction: column; flex: 1; }

.article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
  font-family: "DM Mono", monospace;
  font-size: .64rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.article-cat {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--cat-ink, var(--ink-soft));
  font-weight: 500;
}
.article-cat::before {
  content: "";
  width: 9px; height: 9px;
  border-radius: 2px;
  background: var(--cat-color, var(--crust-40));
}
.article-date { color: var(--ink-muted); }

.article-card h3 {
  font-size: 1.24rem;
  line-height: 1.24;
  margin-bottom: 9px;
}
.article-card h3 a { color: inherit; }
.article-card h3 a:hover { color: var(--crust-80); }

.article-excerpt {
  color: var(--ink-soft);
  font-size: .93rem;
  margin: 0 0 16px;
}

.article-link {
  align-self: flex-start;
  margin-top: auto;
  font-family: "DM Mono", monospace;
  font-size: .66rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--link);
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}