/* ============================================================
 * article.css — 文章详情页专用样式
 * 让长文有杂志/Medium 级别的阅读体验
 * ============================================================ */

/* ===== Hero: insights 首页 ===== */
.hero-insights {
  position: relative;
  padding: 110px 0 80px;
  overflow: hidden;
  background: linear-gradient(135deg, #0A0B0E 0%, #14151B 60%, #0A0B0E 100%);
  color: #fff;
}
.hero-bg-orbs {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(circle at 18% 30%, rgba(94,234,212,.18) 0, transparent 45%),
    radial-gradient(circle at 82% 60%, rgba(212,175,55,.14) 0, transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(125,211,252,.10) 0, transparent 50%);
}
.hero-insights > .container { position: relative; z-index: 2; }
.hero-insights .eyebrow--light {
  color: rgba(255,255,255,.7);
  border: 1px solid rgba(255,255,255,.15);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,.06);
  backdrop-filter: blur(8px);
}
.hero-insights .hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.15;
  margin: 22px 0 24px;
  max-width: 880px;
}
.hero-insights .hero-title .grad-text {
  background: linear-gradient(120deg, #E84147 0%, #E8B4B6 50%, #C8191D 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-insights .hero-lead {
  font-size: 1.1rem; line-height: 1.85;
  color: rgba(255,255,255,.78);
  max-width: 760px; margin-bottom: 48px;
}

.hero-metrics {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 32px; padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,.1);
  max-width: 720px;
}
.hero-metrics .metric {
  display: flex; flex-direction: column; gap: 4px;
}
.hero-metrics .metric strong {
  font-size: 2.4rem; font-weight: 800;
  color: #E84147;
  font-family: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}
.hero-metrics .metric span {
  font-size: .85rem; color: rgba(255,255,255,.6);
  letter-spacing: 1px;
}
@media (max-width: 720px) {
  .hero-metrics { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .hero-insights { padding: 80px 0 56px; }
}

/* ===== 筛选条 ===== */
.filter-bar {
  position: sticky; top: 64px; z-index: 10;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.5);
  padding: 18px 0;
}
.filter-bar .filter-row {
  display: flex; flex-wrap: wrap; gap: 10px;
  align-items: center;
}
.filter-label {
  font-size: .85rem; color: var(--ink-500);
  font-weight: 700; margin-right: 4px;
}
.chip {
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  background: #f5f5f5;
  border: 1px solid transparent;
  color: var(--ink-700);
  font-size: .85rem;
  cursor: pointer;
  transition: all .2s;
  font-weight: 600;
}
.chip:hover { background: #ececec; transform: translateY(-1px); }
.chip--active {
  background: var(--red-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(200,25,29,.3);
}

/* ===== 站内搜索 ===== */
.filter-search { margin-top: 12px; }
.search-input {
  flex: 1 1 320px;
  max-width: 460px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1.5px solid rgba(0,0,0,0.5);
  background: var(--card);
  font-size: .9rem;
  color: var(--ink-800);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  font-family: inherit;
}
.search-input:focus {
  border-color: var(--red-primary);
  box-shadow: 0 0 0 4px rgba(200,25,29,.08);
}
.search-input::placeholder { color: #b0b0b0; }
.search-count {
  font-size: .82rem; color: var(--red-primary); font-weight: 600;
}
.empty-tip a { text-decoration: underline; }

/* ===== 文章卡片网格 ===== */
.articles-grid-section { padding: 64px 0 96px; background: #fafafa; }
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
@media (max-width: 980px) {
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .articles-grid { grid-template-columns: 1fr; }
}

.article-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.5);
  box-shadow: var(--shadow-1);
  transition: transform .35s cubic-bezier(.4,0,.2,1), box-shadow .35s;
  display: flex; flex-direction: column;
}
.article-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-3), 0 0 0 1px rgba(200,25,29,.15);
}
.art-cover {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
}
.art-cover-bg {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
}
.art-cover-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s cubic-bezier(.4,0,.2,1);
}
.article-card:hover .art-cover-bg img { transform: scale(1.05); }
.cover-fallback {
  font-size: 4rem;
  font-weight: 900;
  color: rgba(0,0,0,0.5);
  letter-spacing: -.05em;
}
.art-cat-tag {
  position: absolute; top: 14px; left: 14px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  color: #fff;
  font-size: .72rem; font-weight: 700;
  z-index: 2;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
}
.art-body { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.art-body h3 {
  font-size: 1.15rem; font-weight: 800;
  margin: 0 0 10px;
  line-height: 1.45;
  letter-spacing: -.01em;
}
.art-excerpt {
  font-size: .9rem; color: var(--ink-500);
  line-height: 1.65;
  margin: 0 0 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.art-meta {
  font-size: .78rem; color: var(--ink-400);
  display: flex; flex-wrap: wrap; gap: 4px; align-items: center;
}
.art-meta .dot { color: rgba(0,0,0,0.5); }
.empty-tip {
  text-align: center; padding: 80px 0;
  color: var(--ink-500); font-size: .95rem;
}

/* ===== 订阅卡 ===== */
.subscribe-card {
  padding: 80px 0;
  background: var(--card);
}
.subscribe-card-inner {
  background: linear-gradient(135deg, #1a0a0c 0%, #2d0e10 100%);
  border-radius: var(--radius-xl);
  padding: 56px 56px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
  align-items: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.subscribe-card-inner::before {
  content: ""; position: absolute; top: -50%; right: -10%;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(232,78,27,.4) 0, transparent 70%);
  pointer-events: none;
}
.sub-col-text { position: relative; z-index: 1; }
.sub-col-text .eyebrow {
  font-size: .78rem;
  letter-spacing: 3px;
  color: rgba(255,255,255,.6);
}
.sub-col-text h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  margin: 14px 0 18px;
  letter-spacing: -.02em;
}
.sub-col-text p {
  font-size: 1rem;
  color: rgba(255,255,255,.75);
  line-height: 1.7;
  margin-bottom: 24px;
}
.sub-benefits {
  list-style: none; padding: 0; margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 24px;
}
.sub-benefits li {
  font-size: .92rem;
  color: rgba(255,255,255,.85);
}
.rss-box {
  position: relative; z-index: 1;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  backdrop-filter: blur(8px);
}
.rss-icon { font-size: 2.4rem; margin-bottom: 12px; }
.rss-box h3 { font-size: 1.15rem; margin: 0 0 6px; }
.rss-box p { font-size: .85rem; color: rgba(255,255,255,.6); margin: 0 0 14px; }
.rss-box code {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,.08);
  color: #ffd194;
  font-size: .82rem;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}
.rss-link {
  display: inline-block; margin-top: 14px;
  font-size: .85rem;
  color: var(--gold-text, #E8B4B6);
  font-weight: 700;
}
@media (max-width: 720px) {
  .subscribe-card-inner { grid-template-columns: 1fr; padding: 36px; gap: 32px; }
  .sub-benefits { grid-template-columns: 1fr; }
}

/* ============== Article 详情页 ============== */
.article-page {
  padding: 40px 0 96px;
  background: var(--card);
}
.article-page .container { max-width: 780px; }
.breadcrumbs {
  font-size: .85rem; color: var(--ink-500);
  margin-bottom: 32px;
}
.breadcrumbs a { color: var(--ink-500); }
.breadcrumbs a:hover { color: var(--red-primary); }
.bc-sep { margin: 0 8px; color: rgba(0,0,0,0.5); }
#bc-current { color: var(--ink-800); font-weight: 600; }

.article-header { margin-bottom: 40px; }
.art-cat-badge {
  display: inline-block;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  color: #fff;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.article-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -.025em;
  color: var(--ink-900);
  margin: 0 0 18px;
}
.article-subtitle {
  font-size: 1.1rem;
  color: var(--ink-500);
  line-height: 1.7;
  margin: 0 0 32px;
}

.art-meta-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 0;
  border-top: 1px solid rgba(0,0,0,0.5);
  border-bottom: 1px solid rgba(0,0,0,0.5);
  flex-wrap: wrap; gap: 16px;
}
.art-meta-author { display: flex; align-items: center; gap: 14px; }
.author-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--red-primary), #e84e1b);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.1rem;
  box-shadow: 0 4px 12px rgba(200,25,29,.25);
}
.art-meta-author strong { display: block; font-size: .95rem; color: var(--ink-900); }
.art-meta-sub {
  font-size: .8rem; color: var(--ink-500);
  display: flex; gap: 6px; align-items: center; margin-top: 4px;
  flex-wrap: wrap;
}
.art-meta-sub .dot { color: rgba(0,0,0,0.5); }

.art-share-row {
  display: flex; gap: 8px; align-items: center;
}
.share-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.5);
  background: var(--card);
  color: var(--ink-700);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: all .2s;
}
.share-btn:hover {
  background: var(--red-primary);
  color: #fff;
  border-color: var(--red-primary);
  transform: translateY(-2px);
}
.share-btn--wechat:hover { background: #07c160; border-color: #07c160; }
.share-btn--weibo:hover { background: #e6162d; border-color: #e6162d; }
.copy-tip {
  font-size: .82rem; color: var(--red-primary); font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: rgba(200,25,29,.08);
}

/* 封面图 */
.article-cover {
  margin: 32px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-2);
}
.article-cover img { width: 100%; height: auto; display: block; }
.article-cover figcaption {
  padding: 14px 18px;
  font-size: .82rem;
  color: var(--ink-500);
  background: #fafafa;
  border-top: 1px solid rgba(0,0,0,0.5);
}

/* 正文 (杂志风排版) */
.article-body {
  font-size: 1.06rem;
  line-height: 1.85;
  color: #2c2c2c;
}
.article-body .lead {
  font-size: 1.2rem;
  line-height: 1.75;
  color: var(--ink-700);
  font-weight: 500;
  padding: 24px 28px;
  background: linear-gradient(135deg, #1A1C22 0%, #262A34 100%);
  border-left: 4px solid var(--red-primary);
  border-radius: var(--radius-md);
  margin: 24px 0 36px;
}
.article-body h2 {
  font-size: 1.65rem;
  font-weight: 800;
  margin: 48px 0 18px;
  letter-spacing: -.015em;
  color: var(--ink-900);
  position: relative;
  padding-left: 16px;
}
.article-body h2::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 5px; height: 28px;
  background: linear-gradient(180deg, var(--red-primary), #e84e1b);
  transform: translateY(-50%);
  border-radius: 3px;
}
.article-body h3 {
  font-size: 1.28rem;
  font-weight: 700;
  margin: 32px 0 14px;
  color: var(--ink-800);
  letter-spacing: -.01em;
}
.article-body p { margin: 0 0 18px; }
.article-body strong {
  font-weight: 700;
  color: var(--ink-900);
  background: linear-gradient(180deg, transparent 60%, rgba(232,78,27,.18) 60%);
  padding: 0 2px;
}
.article-body ul, .article-body ol {
  margin: 18px 0;
  padding-left: 28px;
}
.article-body li { margin: 8px 0; line-height: 1.85; }
.article-body a {
  color: var(--red-primary);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
.article-body a:hover {
  background: rgba(200,25,29,.08);
}

/* 关键引用块 */
.article-body blockquote {
  margin: 28px 0;
  padding: 22px 28px;
  background: #1a0a0c;
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 1.05rem;
  line-height: 1.75;
  position: relative;
}
.article-body blockquote::before {
  content: """;
  position: absolute; left: 16px; top: 4px;
  font-size: 4rem;
  color: rgba(255,255,255,.18);
  font-family: Georgia, serif;
  line-height: 1;
}

/* 关键词标签 */
.article-tags {
  margin: 56px 0 32px;
  padding: 24px 0;
  border-top: 1px dashed rgba(0,0,0,0.5);
  border-bottom: 1px dashed rgba(0,0,0,0.5);
}
.tags-label {
  font-size: .82rem;
  color: var(--ink-500);
  font-weight: 700;
  display: block;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.keyword-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.keyword-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(200,25,29,.06);
  color: var(--red-primary);
  font-size: .82rem;
  font-weight: 600;
  border: 1px solid rgba(200,25,29,.15);
  transition: all .2s;
}
.keyword-tag:hover {
  background: var(--red-primary);
  color: #fff;
  transform: translateY(-2px);
}

/* 关联资源 */
.article-related {
  margin: 40px 0;
  padding: 28px;
  background: linear-gradient(135deg, #1A1C22 0%, #262A34 100%);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--red-primary);
}
.article-related h3 {
  font-size: 1.05rem; font-weight: 800;
  margin: 0 0 18px; color: var(--ink-900);
}
.related-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
@media (max-width: 640px) {
  .related-grid { grid-template-columns: 1fr; }
}
.related-card {
  background: var(--card);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  border: 1px solid rgba(0,0,0,0.5);
  transition: all .2s;
  display: block;
}
.related-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
  border-color: rgba(200,25,29,.2);
}
.rel-tag {
  display: inline-block;
  font-size: .68rem;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}
.rel-tag--product { background: var(--red-primary); }
.rel-tag--case { background: var(--dopa-grape); }
.related-card h4 {
  font-size: .98rem; font-weight: 700;
  margin: 0 0 6px; color: var(--ink-900);
  line-height: 1.4;
}
.related-card p {
  font-size: .82rem; color: var(--ink-500);
  line-height: 1.5; margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 上一篇 / 下一篇 */
.article-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 48px 0;
}
@media (max-width: 640px) {
  .article-pager { grid-template-columns: 1fr; }
}
.pager-link {
  background: #fafafa;
  border-radius: var(--radius-md);
  padding: 18px 22px;
  border: 1px solid rgba(0,0,0,0.5);
  transition: all .25s;
  display: block;
}
.pager-prev { text-align: left; }
.pager-next { text-align: right; }
.pager-link:hover {
  background: var(--card);
  box-shadow: var(--shadow-2);
  border-color: rgba(200,25,29,.2);
  transform: translateY(-2px);
}
.pager-link .pll {
  display: block;
  font-size: .78rem;
  color: var(--ink-500);
  margin-bottom: 6px;
  font-weight: 600;
  letter-spacing: 1px;
}
.pager-link .plt {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink-900);
  line-height: 1.45;
}

/* CTA */
.article-cta {
  margin-top: 56px;
  padding: 40px 32px;
  text-align: center;
  background: linear-gradient(135deg, #2d0e10 0%, #1a0a0c 100%);
  color: #fff;
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}
.article-cta::before {
  content: ""; position: absolute; top: -50%; left: -10%;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(232,78,27,.3) 0, transparent 70%);
}
.article-cta h3 {
  font-size: 1.5rem; font-weight: 800;
  margin: 0 0 12px; position: relative;
}
.article-cta p {
  font-size: 1rem; color: rgba(255,255,255,.75);
  margin: 0 0 22px; position: relative;
}
.article-cta .btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: var(--card);
  color: var(--red-primary);
  border-radius: var(--radius-pill);
  font-weight: 800;
  font-size: 1rem;
  text-decoration: none;
  position: relative;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  transition: all .2s;
}
.article-cta .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.5);
}

/* ===== 订阅区二维码 ===== */
.rss-box { text-align: center; }
.sub-qr {
  width: 120px; height: 120px; margin: 0 auto 14px;
  border-radius: 12px; border: 1px solid rgba(0,0,0,0.5);
  display: block; background: var(--card);
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

/* ===== 文章尾部 CTA ===== */
.art-cta {
  margin-top: 48px; padding: 28px 32px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(212,175,55,.08) 0%, rgba(212,175,55,.04) 60%, var(--card) 100%);
  border: 1px solid rgba(200,25,29,.15);
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
}
.art-cta-img { flex-shrink: 0; text-align: center; }
.art-cta-img img {
  width: 104px; height: 104px; border-radius: 10px;
  border: 1px solid rgba(0,0,0,0.5); background: var(--card);
}
.art-cta-img small { display: block; font-size: .72rem; color: var(--ink-500); margin-top: 6px; }
.art-cta-body { flex: 1 1 320px; }
.art-cta-body h4 { font-size: 1.15rem; margin: 0 0 8px; }
.art-cta-body p { font-size: .88rem; color: var(--ink-600); margin: 0 0 14px; line-height: 1.7; }
.art-cta-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.art-cta-actions a {
  padding: 10px 20px; border-radius: 999px; font-size: .85rem; font-weight: 700;
  text-decoration: none; transition: transform .2s, box-shadow .2s;
}
.art-cta-actions a:hover { transform: translateY(-2px); }
.cta-primary { background: var(--red-primary); color: #14100A !important; box-shadow: 0 6px 18px rgba(212,175,55,.35); }
.cta-ghost { border: 1.5px solid rgba(200,25,29,.35); color: var(--red-primary) !important; }

/* ===== 相关文章 ===== */
.rel-articles { margin-top: 56px; }
.rel-articles h3 {
  font-size: 1.05rem; margin-bottom: 18px;
  padding-bottom: 12px; border-bottom: 2px solid #fbe6e7;
}
.rel-list { display: flex; flex-direction: column; gap: 10px; }
.rel-item {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 14px 18px; border-radius: 12px; background: #fafafa;
  text-decoration: none; color: inherit; transition: background .2s, transform .2s;
}
.rel-item:hover { background: #fbe6e7; transform: translateX(4px); }
.rel-item b { font-size: .92rem; font-weight: 600; }
.rel-item time { font-size: .76rem; color: var(--ink-500); white-space: nowrap; }
@media (max-width: 640px) { .art-cta { padding: 22px; } }