/* ============================================================
   Aivance｜日進  ·  Blog Styles v2（雜誌編輯風）
   接續 styles.css 設計系統（--red, --orange, --paper, etc.）
   ============================================================ */

/* ---------- 容器 ---------- */
.blog-wrap {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 28px;
}
@media (max-width: 640px) {
  .blog-wrap { padding: 0 20px; }
}

/* ---------- 頁首標題 ---------- */
.blog-masthead {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--line, #e8e0ce);
}
.blog-masthead .mh-eyebrow {
  font-family: var(--mono, 'DM Mono', monospace);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink3, #a89a85);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.blog-masthead .mh-eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--orange, #f59f5a);
}
.blog-masthead h1 {
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--ink, #2c1f14);
}
.blog-masthead h1 em {
  font-family: var(--serif, 'Cormorant Garamond', serif);
  font-style: italic;
  font-weight: 700;
  color: var(--orange, #f59f5a);
}
.blog-masthead p {
  font-size: 16px;
  color: var(--ink2, #6b5d4d);
  line-height: 1.8;
  max-width: 620px;
  margin-top: 22px;
}

/* ---------- 分類 chip 列 ---------- */
.cat-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 28px 0 0;
}
@media (max-width: 640px) {
  .cat-nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    margin: 0 -20px;
    padding: 28px 20px 0;
  }
  .cat-nav::-webkit-scrollbar { display: none; }
}
.cat-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px 15px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid var(--line, #e8e0ce);
  color: var(--ink2, #6b5d4d);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.2s ease;
}
.cat-chip:hover {
  border-color: var(--orange, #f59f5a);
  color: var(--ink, #2c1f14);
}
.cat-chip.active {
  background: var(--ink, #2c1f14);
  color: var(--bg, #fdfcf8);
  border-color: var(--ink, #2c1f14);
}
.cat-chip .chip-count {
  font-family: var(--mono, 'DM Mono', monospace);
  font-size: 10.5px;
  opacity: 0.55;
}

/* ============================================================
   HERO 卡片（第一篇 / 精選，橫式大卡）
   ============================================================ */
.feature-card {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 0;
  background: var(--bg, #fdfcf8);
  border: 1px solid var(--line, #e8e0ce);
  border-radius: 22px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  margin: 40px 0 0;
  transition: all 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.feature-card:hover {
  border-color: var(--orange, #f59f5a);
  box-shadow: 0 28px 56px -28px rgba(60, 42, 24, 0.22);
}
.feature-card .fc-img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--paper, #faf6ec);
}
.feature-card .fc-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.feature-card:hover .fc-img img { transform: scale(1.04); }
.feature-card .fc-body {
  padding: 44px 44px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.feature-card .fc-badge {
  font-family: var(--mono, 'DM Mono', monospace);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange, #f59f5a);
  margin-bottom: 16px;
}
.feature-card .fc-cat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink3, #8a7860);
  margin-bottom: 14px;
}
.feature-card .fc-cat .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cat-color, var(--orange));
}
.feature-card .fc-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.015em;
  color: var(--ink, #2c1f14);
  margin-bottom: 16px;
}
.feature-card .fc-excerpt {
  font-size: 15px;
  color: var(--ink2, #6b5d4d);
  line-height: 1.85;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 24px;
}
.feature-card .fc-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono, 'DM Mono', monospace);
  font-size: 12px;
  color: var(--ink3, #a89a85);
  letter-spacing: 0.05em;
}
.feature-card .fc-meta .sep { opacity: 0.4; }
@media (max-width: 760px) {
  .feature-card { grid-template-columns: 1fr; }
  .feature-card .fc-img { aspect-ratio: 16 / 9; }
  .feature-card .fc-body { padding: 30px 26px 28px; }
}

/* ============================================================
   文章卡片（標準格狀，等高對齊）
   ============================================================ */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 26px;
}
@media (max-width: 900px) { .blog-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; } }
@media (max-width: 560px) { .blog-grid { grid-template-columns: 1fr; } }

/* 區塊小標 */
.blog-section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 56px 0 4px;
  font-family: var(--mono, 'DM Mono', monospace);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink3, #a89a85);
}
.blog-section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--line, #e8e0ce);
}

.post-card {
  display: flex;
  flex-direction: column;
  background: var(--bg, #fdfcf8);
  border: 1px solid var(--line, #e8e0ce);
  border-radius: 16px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  height: 100%;
}
.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--orange, #f59f5a);
  box-shadow: 0 22px 44px -24px rgba(60, 42, 24, 0.2);
}
.post-card .pc-img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--paper, #faf6ec);
  flex-shrink: 0;
}
.post-card .pc-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.post-card:hover .pc-img img { transform: scale(1.05); }
.post-card .pc-body {
  padding: 20px 20px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.post-card .pc-cat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ink3, #8a7860);
  margin-bottom: 11px;
}
.post-card .pc-cat .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cat-color, var(--orange));
  flex-shrink: 0;
}
.post-card .pc-title {
  font-size: 17.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink, #2c1f14);
  margin-bottom: 9px;
  letter-spacing: -0.01em;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card .pc-excerpt {
  font-size: 13px;
  color: var(--ink2, #6b5d4d);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
  flex: 1;
}
.post-card .pc-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono, 'DM Mono', monospace);
  font-size: 11px;
  color: var(--ink3, #a89a85);
  letter-spacing: 0.05em;
  padding-top: 13px;
  border-top: 1px dashed var(--line, #e8e0ce);
  margin-top: auto;
}

/* ---------- 空 / 載入 / 錯誤狀態 ---------- */
.loading {
  text-align: center;
  padding: 60px 20px;
  font-family: var(--mono, 'DM Mono', monospace);
  font-size: 13px;
  color: var(--ink3, #a89a85);
  letter-spacing: 0.12em;
}
.loading::after {
  content: '';
  display: inline-block;
  animation: ldots 1.4s infinite steps(4, end);
  width: 1.2em;
  text-align: left;
}
@keyframes ldots {
  0% { content: ''; }
  25% { content: '·'; }
  50% { content: '··'; }
  75% { content: '···'; }
}
.blog-empty {
  text-align: center;
  padding: 72px 24px;
  background: var(--paper, #faf6ec);
  border-radius: 22px;
  margin-top: 40px;
}
.blog-empty .face { font-size: 42px; margin-bottom: 18px; color: var(--orange); font-family: var(--mono); }
.blog-empty h2 { font-size: 19px; font-weight: 700; color: var(--ink); margin-bottom: 12px; }
.blog-empty p { font-size: 14px; color: var(--ink2); line-height: 1.85; }
.blog-empty a { color: var(--red); font-weight: 600; text-decoration: none; }

/* ============================================================
   單篇文章頁
   ============================================================ */
.article-hero {
  max-width: 760px;
  margin: 0 auto;
  padding: 52px 28px 28px;
}
.article-breadcrumb {
  font-family: var(--mono, 'DM Mono', monospace);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink3, #a89a85);
  margin-bottom: 22px;
}
.article-breadcrumb a { color: var(--orange); text-decoration: none; }
.article-cats { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.article-cat {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12.5px; font-weight: 500;
  padding: 6px 13px; border-radius: 999px;
  border: 1px solid var(--cat-color, var(--orange));
  color: var(--cat-color, var(--orange));
  text-decoration: none;
}
.article-title {
  font-size: clamp(28px, 4.2vw, 46px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: var(--ink, #2c1f14);
  margin-bottom: 20px;
}
.article-excerpt {
  font-size: 17px;
  color: var(--ink2, #6b5d4d);
  line-height: 1.85;
  margin-bottom: 26px;
  padding-left: 18px;
  border-left: 3px solid var(--orange);
}
.article-meta {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--mono, 'DM Mono', monospace);
  font-size: 12.5px; color: var(--ink3, #a89a85);
  letter-spacing: 0.05em;
}
.article-meta .sep { opacity: 0.4; }
.article-cover {
  max-width: 980px; margin: 0 auto 48px; padding: 0 28px;
}
.article-cover img {
  width: 100%; border-radius: 20px; display: block;
  aspect-ratio: 16 / 9; object-fit: cover;
}
.article-body {
  max-width: 700px; margin: 0 auto; padding: 0 28px;
  font-size: 16.5px; line-height: 1.95; color: var(--ink2, #4a3d2f);
}
.article-body .bp-p { margin-bottom: 22px; }
.article-body .bp-h2 {
  font-size: 25px; font-weight: 800; color: var(--ink);
  margin: 46px 0 16px; padding-bottom: 12px;
  border-bottom: 2px solid var(--paper); line-height: 1.35;
  letter-spacing: -0.01em;
}
.article-body .bp-h3 {
  font-size: 20px; font-weight: 700; color: var(--ink);
  margin: 34px 0 13px; line-height: 1.4;
}
.article-body .bp-h4 {
  font-size: 17px; font-weight: 700; color: var(--ink); margin: 26px 0 11px;
}
.article-body .bp-list { margin: 16px 0 22px; padding-left: 22px; }
.article-body .bp-list li { margin-bottom: 9px; line-height: 1.8; }
.article-body .bp-quote {
  margin: 28px 0; padding: 18px 24px;
  background: var(--paper); border-left: 4px solid var(--orange);
  border-radius: 0 12px 12px 0; font-style: italic; color: var(--ink2);
}
.article-body .bp-code {
  background: var(--paper); padding: 2px 8px; border-radius: 5px;
  font-family: var(--mono); font-size: 0.9em; color: var(--red);
}
.article-body .bp-link {
  color: var(--red); text-decoration: underline;
  text-decoration-color: var(--orange); text-underline-offset: 3px;
}
.article-body .bp-fig { margin: 32px 0; }
.article-body .bp-fig img { width: 100%; border-radius: 14px; display: block; }
.article-body .bp-cap {
  text-align: center; font-size: 13px; color: var(--ink3);
  margin-top: 10px; font-style: italic;
}
.article-body .bp-callout {
  display: flex; gap: 14px; padding: 18px 22px; border-radius: 14px;
  margin: 28px 0; background: var(--paper); border: 1px solid var(--line);
  align-items: flex-start;
}
.article-body .bp-callout .bp-co-icon { font-size: 22px; flex-shrink: 0; line-height: 1.4; }
.article-body .bp-tip { background: #FFF8E8; border-color: var(--yellow); }
.article-body .bp-warning { background: #FFE8D8; border-color: var(--orange); }
.article-body .bp-highlight { background: #E8F4DD; border-color: var(--mint); }

/* 文末標籤 */
.article-tags {
  max-width: 700px; margin: 52px auto 0; padding: 24px 28px 0;
  border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
}
.article-tags .tg-label {
  font-family: var(--mono); font-size: 12px; color: var(--ink3);
  letter-spacing: 0.1em; margin-right: 6px;
}
.article-tags .tg {
  font-size: 13px; padding: 5px 12px; border-radius: 999px;
  background: var(--paper); color: var(--ink2); text-decoration: none;
  transition: all 0.2s;
}
.article-tags .tg:hover { background: var(--ink); color: var(--bg); }

/* 推薦文章 */
.related-section {
  max-width: 1160px; margin: 76px auto 0; padding: 52px 28px 0;
  border-top: 1px dashed var(--line);
}
.related-section h2 {
  font-size: 23px; font-weight: 800; color: var(--ink);
  margin-bottom: 6px; letter-spacing: -0.01em;
}
.related-section .rs-sub {
  font-family: var(--mono); font-size: 12px; color: var(--ink3);
  letter-spacing: 0.12em; margin-bottom: 28px; text-transform: uppercase;
}

/* ============================================================
   分類頁 header
   ============================================================ */
.cat-hero {
  max-width: 760px; margin: 0 auto; padding: 56px 28px 12px; text-align: center;
}
.cat-hero .cat-icon { font-size: 44px; margin-bottom: 14px; }
.cat-hero h1 {
  font-size: clamp(28px, 4vw, 42px); font-weight: 800;
  letter-spacing: -0.02em; color: var(--ink); margin-bottom: 14px;
}
.cat-hero p {
  font-size: 16px; color: var(--ink2); line-height: 1.85;
  max-width: 560px; margin: 0 auto 22px;
}
.cat-hero .cat-count {
  display: inline-block; font-family: var(--mono); font-size: 12px;
  letter-spacing: 0.1em; color: var(--ink3); padding: 6px 16px;
  background: var(--paper); border-radius: 999px;
}

/* ============================================================
   首頁熱門文章區
   ============================================================ */
.home-featured {
  max-width: 1160px; margin: 0 auto; padding: 76px 28px 40px;
}
.home-featured-head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 6px; flex-wrap: wrap; gap: 12px;
}
.home-featured-head h2 {
  font-size: clamp(24px, 3vw, 32px); font-weight: 800;
  color: var(--ink); letter-spacing: -0.01em;
}
.home-featured-head h2 em {
  font-family: var(--serif); font-style: italic; color: var(--orange); font-weight: 700;
}
.home-featured-head .hf-more {
  font-family: var(--mono); font-size: 13px; color: var(--orange);
  text-decoration: none; letter-spacing: 0.05em;
}
.home-featured-head .hf-more:hover { color: var(--red); }
.home-featured .hf-sub {
  font-family: var(--mono); font-size: 12px; color: var(--ink3);
  letter-spacing: 0.14em; margin-bottom: 30px; text-transform: uppercase;
}
.home-featured-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
@media (max-width: 900px) { .home-featured-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .home-featured-grid { grid-template-columns: 1fr; } }