/* ============================================================
   No H No Gal - Magazine Style Stylesheet
   Inspired by Vogue, Kinfolk, Monocle
   ============================================================ */

/* ── 字体导入 ── */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=Source+Serif+4:opsz,wght@8..60,300;8..60,400;8..60,500;8..60,600&family=Noto+Serif+SC:wght@300;400;500;600;700&family=Noto+Sans+SC:wght@300;400;500&display=swap');

/* ── CSS 变量 ── */
:root {
  --font-heading: 'Playfair Display', 'Noto Serif SC', 'Georgia', serif;
  --font-body: 'Source Serif 4', 'Noto Serif SC', 'Georgia', serif;
  --font-caption: 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
  --font-display: 'Cormorant Garamond', 'Noto Serif SC', serif;
  
  --color-bg: #faf9f7;
  --color-bg-alt: #f5f3f0;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #555555;
  --color-text-muted: #888888;
  --color-border: #e0ddd8;
  --color-border-light: #eae8e5;
  --color-accent: #8b1a2d;
  --color-accent-light: #b83a4e;
  
  --max-width: 1200px;
  --content-width: 720px;
  --gutter: 24px;
  
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── 重置与基础 ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection {
  background: rgba(139, 26, 45, 0.15);
  color: var(--color-text);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  /* 强制 GPU 合成层渲染，改善缩放时的采样质量，减少摩尔纹 */
  transform: translateZ(0);
  backface-visibility: hidden;
}

a {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent);
}

/* ── 排版层级 ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
  margin-bottom: 1.25em;
}

/* ── 布局容器 ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.content-narrow {
  max-width: var(--content-width);
  margin: 0 auto;
}

/* ── 导航 ── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 249, 247, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.nav-logo span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  font-family: var(--font-caption);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links a {
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

/* ── 封面区域 ── */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: flex-end;
  padding-bottom: 5rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.55) saturate(0.85);
  /* 轻微降低对比度可以打断摩尔纹干涉 */
  filter: brightness(0.55) contrast(0.98) saturate(0.85);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.85) 0%,
    rgba(0, 0, 0, 0.5) 35%,
    rgba(0, 0, 0, 0.25) 60%,
    rgba(0, 0, 0, 0.1) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
  width: 100%;
  color: #fff;
}

.hero-icon {
  margin-bottom: 1rem;
}

.hero-icon img {
  width: 64px;
  height: 64px;
  object-fit: contain;
  border-radius: 0;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.4));
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 300;
  line-height: 1.1;
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,0.6), 0 1px 3px rgba(0,0,0,0.8);
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 400;
  line-height: 1.6;
  max-width: 540px;
  margin-bottom: 2rem;
  text-shadow: 0 1px 6px rgba(0,0,0,0.7), 0 1px 2px rgba(0,0,0,0.9);
}

.hero-cta {
  display: inline-block;
  font-family: var(--font-caption);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.875rem 2.25rem;
  border: 1px solid rgba(255,255,255,0.5);
  color: #fff;
  transition: all var(--transition);
}

.hero-cta:hover {
  background: #fff;
  color: var(--color-text);
  border-color: #fff;
}

/* ── 板块标题 ── */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.section-title::before {
  content: '//';
  color: var(--color-accent);
  margin-right: 0.5rem;
  font-weight: 400;
}

.section-link {
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.section-link:hover {
  color: var(--color-accent);
}

/* ── 文章卡片网格 ── */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem 2rem;
}

@media (max-width: 992px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .articles-grid {
    grid-template-columns: 1fr;
  }
}

/* ── 文章卡片 ── */
.article-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  transition: transform var(--transition), box-shadow var(--transition);
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}

.article-card-image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.article-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
  /* 使用浏览器默认的高质量平滑缩放 */
  image-rendering: auto;
  /* 大幅降低对比度，消除摩尔纹干涉条纹 */
  filter: contrast(0.85) saturate(0.92);
}

.article-card:hover .article-card-image img {
  transform: scale(1.04);
}

.article-card-image.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f0eeeb 0%, #e8e5e1 100%);
}

.article-card-image.placeholder::after {
  content: 'NHNG';
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-border);
  letter-spacing: 0.1em;
}

.article-card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card-category {
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.625rem;
}

.article-card-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.35;
  margin-bottom: 0.625rem;
}

.article-card-title a:hover {
  color: var(--color-accent);
}

.article-card-summary {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  flex: 1;
}

.article-card-meta {
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
  display: flex;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-light);
}

/* ── 精选文章（大卡片）─ */
.featured-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.featured-main {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.featured-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.featured-main:hover img {
  transform: scale(1.03);
}

.featured-main .featured-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 3rem 2rem 2rem;
  background: linear-gradient(to top, rgba(0,0,0,0.75), transparent);
  color: #fff;
}

.featured-main .featured-category {
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  opacity: 0.85;
}

.featured-main .featured-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 500;
  line-height: 1.25;
}

.featured-main .featured-title a {
  color: #fff;
}

.featured-main .featured-title a:hover {
  opacity: 0.85;
}

.featured-side {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.featured-side-item {
  position: relative;
  flex: 1;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.featured-side-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.featured-side-item:hover img {
  transform: scale(1.03);
}

.featured-side-item .featured-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem 1.25rem 1.25rem;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  color: #fff;
}

.featured-side-item .featured-category {
  font-family: var(--font-caption);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.375rem;
  opacity: 0.85;
}

.featured-side-item .featured-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.3;
}

.featured-side-item .featured-title a {
  color: #fff;
}

@media (max-width: 768px) {
  .featured-grid {
    grid-template-columns: 1fr;
  }
  .featured-side {
    flex-direction: row;
  }
  .featured-side-item {
    aspect-ratio: 4 / 3;
  }
}

@media (max-width: 576px) {
  .featured-side {
    flex-direction: column;
  }
}

/* ── 分类侧边栏 ── */
.category-list {
  list-style: none;
}

.category-list li {
  border-bottom: 1px solid var(--color-border-light);
}

.category-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.875rem 0;
  font-family: var(--font-caption);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  transition: color var(--transition), padding-left var(--transition);
}

.category-list a:hover {
  color: var(--color-accent);
  padding-left: 0.5rem;
}

.category-list .count {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

/* ── 分页 ── */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.pagination a {
  font-family: var(--font-caption);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.pagination a:hover {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

/* ── 文章详情页 ── */
.article-header {
  padding-top: 3rem;
  padding-bottom: 2.5rem;
  text-align: center;
  max-width: var(--content-width);
  margin: 0 auto;
}

.article-header-category {
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

.article-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 500;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}

.article-header-subtitle {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 300;
  font-style: italic;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.article-header-meta {
  font-family: var(--font-caption);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
}

.article-header-meta span + span::before {
  content: '·';
  margin: 0 0.625rem;
}

/* 横版封面（默认） */
.article-hero-image {
  width: 100%;
  max-height: 70vh;
  object-fit: cover;
  margin-bottom: 3rem;
}

/* 竖版封面 */
.article-hero-portrait {
  display: flex;
  justify-content: center;
  margin-bottom: 3rem;
  padding: 0 1rem;
}

.article-hero-portrait figure {
  margin: 0;
  text-align: center;
}

.article-hero-portrait img {
  max-height: 80vh;
  max-width: 100%;
  width: auto;
  object-fit: contain;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}

.article-hero-portrait figcaption {
  font-family: var(--font-caption);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.75rem;
  letter-spacing: 0.03em;
}

/* 封面类型标签 */
.cover-layout-badge {
  display: inline-block;
  font-family: var(--font-caption);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.625rem;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  margin-left: 0.5rem;
  vertical-align: middle;
}

/* ── 文章内容排版（杂志风格）─ */
.article-body {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 1rem;
}

.article-body p {
  margin-bottom: 1.5em;
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}

/* 首字下沉 */
.article-body > p:first-of-type::first-letter {
  font-family: var(--font-display);
  font-size: 4.5rem;
  font-weight: 300;
  float: left;
  line-height: 0.8;
  padding-right: 0.12em;
  padding-top: 0.05em;
  color: var(--color-accent);
}

.article-body h2 {
  font-size: 1.5rem;
  margin-top: 2.5em;
  margin-bottom: 0.75em;
  padding-bottom: 0.4em;
  border-bottom: 1px solid var(--color-border);
}

.article-body h3 {
  font-size: 1.125rem;
  margin-top: 2em;
  margin-bottom: 0.625em;
}

.article-body blockquote {
  margin: 2em 0;
  padding: 1.25em 2em;
  border-left: 2px solid var(--color-accent);
  background: var(--color-bg-alt);
  font-style: italic;
}

.article-body blockquote p {
  margin-bottom: 0;
  font-size: 1.0625rem;
  line-height: 1.7;
}

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

.article-body ul,
.article-body ol {
  margin-bottom: 1.5em;
  padding-left: 1.75em;
}

.article-body li {
  margin-bottom: 0.375em;
}

.article-body a {
  color: var(--color-accent);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.article-body a:hover {
  border-bottom-color: var(--color-accent);
}

.article-body strong {
  font-weight: 600;
}

.article-body em {
  font-style: italic;
}

.article-body img {
  margin: 2em auto;
  border-radius: 0;
}

.article-body figure {
  margin: 2em 0;
}

.article-body figcaption {
  font-family: var(--font-caption);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 0.5rem;
  letter-spacing: 0.02em;
}

.article-body hr {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: 3em auto;
  width: 60%;
}

.article-body pre {
  background: #f4f2ef;
  padding: 1.25em;
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 1.5em;
  border-radius: 0;
}

.article-body code {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.875em;
  background: rgba(0,0,0,0.04);
  padding: 0.15em 0.35em;
}

.article-body pre code {
  background: none;
  padding: 0;
}

/* ── 文章底部 ── */
.article-footer {
  max-width: var(--content-width);
  margin: 3rem auto 0;
  padding: 2rem 1rem;
  border-top: 1px solid var(--color-border);
}

.article-tags {
  margin-bottom: 2rem;
}

.article-tags span {
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-right: 0.75rem;
}

.article-tags a {
  font-family: var(--font-caption);
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--color-border);
  margin-right: 0.5rem;
  transition: all var(--transition);
}

.article-tags a:hover {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.article-nav-prev,
.article-nav-next {
  display: flex;
  flex-direction: column;
}

.article-nav-next {
  text-align: right;
  align-items: flex-end;
}

.article-nav-label {
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.article-nav-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.3;
}

.article-nav-title a:hover {
  color: var(--color-accent);
}

/* ── 相关文章 ── */
.related-articles {
  max-width: var(--content-width);
  margin: 3rem auto 0;
  padding: 2rem 1rem;
  border-top: 1px solid var(--color-border);
}

.related-articles h3 {
  font-family: var(--font-caption);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  color: var(--color-text-muted);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
  .article-nav {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .article-nav-next {
    text-align: left;
    align-items: flex-start;
  }
}

/* ── 页脚 ── */
.site-footer {
  margin-top: 5rem;
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.footer-logo span {
  color: var(--color-accent);
}

.footer-copy {
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  font-family: var(--font-caption);
  font-size: 0.75rem;
}

.footer-links a {
  color: var(--color-text-muted);
}

.footer-links a:hover {
  color: var(--color-accent);
}

@media (max-width: 576px) {
  .footer-inner {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
  .hero-icon img {
    width: 48px;
    height: 48px;
  }
}

/* ── 阅读进度条 ── */
.read-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--color-accent);
  z-index: 1000;
  transition: width 0.1s linear;
  width: 0%;
}

/* ── 分类页 ── */
.category-header {
  text-align: center;
  padding: 4rem 0 2.5rem;
}

.category-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  margin-bottom: 0.5rem;
}

.category-header p {
  font-family: var(--font-caption);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

/* ── 关于页 ── */
.about-header {
  text-align: center;
  padding: 5rem 0 3rem;
}

.about-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 300;
  margin-bottom: 1rem;
}

.about-header p {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin: 0 auto;
}

.about-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 4rem;
  align-items: start;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

.about-main {
  min-width: 0;
}

.about-body p {
  margin-bottom: 1.5em;
  text-align: justify;
  font-size: 1.0625rem;
  line-height: 1.9;
}

.about-dropcap {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 300;
  float: left;
  line-height: 0.8;
  padding-right: 0.12em;
  padding-top: 0.05em;
  color: var(--color-accent);
}

.about-signoff {
  text-align: center;
  margin-top: 3rem;
  color: var(--color-text-muted);
  font-family: var(--font-caption);
  font-size: 0.8125rem;
  letter-spacing: 0.05em;
}

.about-sidebar {
  position: sticky;
  top: 96px;
}

.qrcode-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
  text-align: center;
}

.qrcode-image {
  margin-bottom: 1.25rem;
}

.qrcode-image img {
  width: 100%;
  max-width: 260px;
  margin: 0 auto;
  cursor: zoom-in;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.qrcode-image img:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.qrcode-tip {
  font-family: var(--font-caption);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

@media (max-width: 768px) {
  .about-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .about-sidebar {
    position: static;
    max-width: 360px;
    margin: 0 auto;
  }
}

/* ── 登录页 ── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.auth-box {
  width: 100%;
  max-width: 400px;
  background: var(--color-surface);
  padding: 3rem;
  border: 1px solid var(--color-border);
}

.auth-box h1 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  color: var(--color-text-secondary);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text);
  transition: border-color var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-text);
}

.form-control::placeholder {
  color: var(--color-text-muted);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
  line-height: 1.7;
}

.btn {
  display: inline-block;
  font-family: var(--font-caption);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.875rem 2rem;
  border: 1px solid var(--color-text);
  background: var(--color-text);
  color: var(--color-bg);
  cursor: pointer;
  transition: all var(--transition);
}

.btn:hover {
  background: transparent;
  color: var(--color-text);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
}

.btn-outline:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.6875rem;
}

.btn-danger {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: #fff;
}

.btn-danger:hover {
  background: transparent;
  color: var(--color-accent);
}

/* ── Flash 消息 ── */
.flash-messages {
  position: fixed;
  top: 80px;
  right: 24px;
  z-index: 200;
  max-width: 360px;
}

.flash-message {
  padding: 1rem 1.5rem;
  margin-bottom: 0.75rem;
  font-family: var(--font-caption);
  font-size: 0.8125rem;
  background: var(--color-surface);
  border-left: 3px solid var(--color-text);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  animation: slideIn 0.3s ease;
}

.flash-message.success {
  border-left-color: #2d6a4f;
}

.flash-message.danger {
  border-left-color: var(--color-accent);
}

.flash-message.warning {
  border-left-color: #b8860b;
}

.flash-message.info {
  border-left-color: #4a6fa5;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ── 后台管理 ── */
.admin-page {
  padding: 2rem 0 4rem;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.admin-header h1 {
  font-size: 1.5rem;
}

.admin-nav {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin-bottom: 2rem;
  font-family: var(--font-caption);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.admin-nav a {
  color: var(--color-text-muted);
  padding-bottom: 0.25rem;
  border-bottom: 2px solid transparent;
}

.admin-nav a:hover,
.admin-nav a.active {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.stat-card {
  background: var(--color-surface);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  text-align: center;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ── 表格 ── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.data-table th,
.data-table td {
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.data-table th {
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
}

.data-table tr:hover td {
  background: var(--color-bg-alt);
}

.data-table .actions {
  display: flex;
  gap: 0.5rem;
}

.data-table .actions form {
  display: inline;
}

/* ── 封面管理 ── */
.covers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.cover-card {
  position: relative;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  overflow: hidden;
}

.cover-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.cover-card-body {
  padding: 1rem;
}

.cover-card-title {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.cover-card-issue {
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.cover-card-actions {
  display: flex;
  gap: 0.5rem;
}

.cover-card .badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-caption);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.25rem 0.5rem;
}

@media (max-width: 992px) {
  .covers-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .covers-grid {
    grid-template-columns: 1fr;
  }
}

/* ── 表单布局 ── */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.form-check input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  accent-color: var(--color-accent);
}

.form-check label {
  font-family: var(--font-caption);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.form-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
  }
  .auth-box {
    padding: 2rem;
  }
}

/* ── 404 ── */
.error-page {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 2rem;
}

.error-page h1 {
  font-family: var(--font-display);
  font-size: 6rem;
  font-weight: 300;
  color: var(--color-border);
  line-height: 1;
  margin-bottom: 1rem;
}

.error-page p {
  font-family: var(--font-body);
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

/* ── 两栏布局（内容+侧边栏）─ */
.layout-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 3rem;
  align-items: start;
}

@media (max-width: 992px) {
  .layout-with-sidebar {
    grid-template-columns: 1fr;
  }
}

.sidebar-section {
  margin-bottom: 2.5rem;
}

.sidebar-title {
  font-family: var(--font-caption);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

/* ── 懒加载占位 ── */
.img-placeholder {
  background: linear-gradient(135deg, #f0eeeb 0%, #e8e5e1 100%);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ── 平滑滚动优化 ── */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

/* ── 打印样式 ── */
@media print {
  .site-nav,
  .site-footer,
  .article-nav,
  .related-articles,
  .read-progress,
  .flash-messages {
    display: none !important;
  }
  
  body {
    background: #fff;
    font-size: 12pt;
    line-height: 1.6;
  }
  
  .article-body {
    max-width: 100%;
  }
  
  a {
    color: #000;
    text-decoration: underline;
  }
}

/* =============================================================================
   音乐播放器
   ============================================================================= */
.music-player {
  position: fixed;
  left: 1rem;
  bottom: 1rem;
  z-index: 999;
  font-family: var(--font-sans);
}

.music-toggle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--color-text);
  color: var(--color-bg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.music-toggle:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.music-toggle.playing {
  background: var(--color-accent);
  animation: musicPulse 2s ease-in-out infinite;
}

@keyframes musicPulse {
  0%, 100% { box-shadow: 0 4px 16px rgba(0,0,0,0.2); }
  50% { box-shadow: 0 4px 24px rgba(180, 83, 9, 0.4); }
}

.music-panel {
  position: absolute;
  bottom: 60px;
  left: 0;
  width: 300px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(0.96);
  transform-origin: bottom left;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  overflow: hidden;
}

.music-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.music-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.music-panel-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.music-panel-close {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s, background 0.15s;
}

.music-panel-close:hover {
  color: var(--color-text);
  background: var(--color-border);
}

.music-panel-body {
  padding: 1rem;
}

.music-now-playing {
  text-align: center;
  margin-bottom: 0.75rem;
  padding: 0.5rem 0;
}

.music-song-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.music-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.music-ctrl-btn {
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}

.music-ctrl-btn:hover {
  background: var(--color-bg-alt);
  color: var(--color-accent);
}

.music-play-btn {
  width: 44px;
  height: 44px;
  background: var(--color-text);
  color: var(--color-bg);
}

.music-play-btn:hover {
  background: var(--color-accent);
  color: #fff;
}

.music-progress-area {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.music-time {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  min-width: 2.5rem;
  text-align: center;
}

.music-progress {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 2px;
  background: var(--color-border);
  outline: none;
  cursor: pointer;
}

.music-progress::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-text);
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
}

.music-progress::-webkit-slider-thumb:hover {
  background: var(--color-accent);
  transform: scale(1.2);
}

.music-progress::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-text);
  cursor: pointer;
  border: none;
}

.music-volume-area {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  color: var(--color-text-muted);
}

.music-volume {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 2px;
  background: var(--color-border);
  outline: none;
  cursor: pointer;
}

.music-volume::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-text-muted);
  cursor: pointer;
}

.music-volume::-moz-range-thumb {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-text-muted);
  cursor: pointer;
  border: none;
}

.music-playlist {
  max-height: 160px;
  overflow-y: auto;
  border-top: 1px solid var(--color-border);
  padding-top: 0.5rem;
}

.music-playlist-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.music-playlist-item:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.music-playlist-item.active {
  background: var(--color-bg-alt);
  color: var(--color-accent);
  font-weight: 500;
}

.music-playlist-item .music-note-icon {
  flex-shrink: 0;
  opacity: 0.5;
}

.music-playlist-item.active .music-note-icon {
  opacity: 1;
}

/* 移动端适配 */
@media (max-width: 480px) {
  .music-panel {
    width: calc(100vw - 2rem);
    max-width: 320px;
  }
}

/* 播放器封面 */
.music-cover-wrap {
  text-align: center;
  margin-bottom: 0.75rem;
}

.music-cover-img {
  width: 120px;
  height: 120px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}

.music-cover-img:hover {
  transform: scale(1.03);
}

/* 播放模式按钮 */
.music-mode-btn {
  opacity: 0.6;
}

.music-mode-btn:hover {
  opacity: 1;
}

/* 播放按钮状态增强 */
.music-play-btn {
  background: var(--color-text) !important;
  color: var(--color-bg) !important;
  transition: background 0.2s ease, transform 0.15s ease;
}

.music-play-btn:hover {
  background: var(--color-accent) !important;
  color: #fff !important;
  transform: scale(1.08);
}

/* 播放时的小按钮动画 */
.music-toggle.playing svg {
  animation: musicSpin 4s linear infinite;
}

@keyframes musicSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}