/* ==========================================================================
   manwa漫蛙台版 - 全站样式表
   视觉方向：金融研究风应用于漫画内容，深色标题、紧凑列表、状态色标注
   ========================================================================== */

/* ==========================================================================
   Base - 基础变量、重置与全局元素
   ========================================================================== */

:root {
  --color-ink: #1a1a2e;
  --color-navy: #16213e;
  --color-deep: #0f3460;
  --color-accent: #e94560;
  --color-white: #ffffff;
  --color-bg: #f5f6f8;
  --color-card: #ffffff;
  --color-border: #e3e5ea;
  --color-muted: #667085;
  --color-text: #2d3446;
  --color-blue-soft: #eef3f9;
  --color-status-new: #e94560;
  --color-status-update: #0f3460;
  --color-status-done: #4caf7d;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container-width: 1200px;
  --container-pad: 24px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.08);
  --shadow-md: 0 4px 12px rgba(26, 26, 46, 0.08);
  --transition-base: 0.2s ease;
  --header-h: 64px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-ink);
  font-weight: 700;
  line-height: 1.3;
}

h1 {
  font-size: 28px;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 17px;
}

h4 {
  font-size: 15px;
}

p {
  margin-bottom: 12px;
}

/* ==========================================================================
   Layout - 全站布局骨架
   ========================================================================== */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
}

.site-header {
  background-color: var(--color-ink);
  border-bottom: 3px solid var(--color-accent);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-brand {
  flex-shrink: 0;
}

.site-brand a {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: 0;
}

.site-brand a:hover {
  color: var(--color-white);
  opacity: 0.85;
}

.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-list li a {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: #c8cdd8;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-list li a:hover {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.08);
}

.nav-list li a.is-current {
  color: var(--color-white);
  background-color: var(--color-accent);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.site-main {
  flex: 1;
  width: 100%;
}

.site-footer {
  background-color: var(--color-ink);
  color: #aab3c5;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-pad) 24px;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 40px;
}

.footer-about .footer-brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-about p:not(.footer-brand) {
  font-size: 13px;
  line-height: 1.7;
  margin-bottom: 0;
  max-width: 340px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.footer-col .footer-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  font-size: 13px;
  color: #aab3c5;
}

.footer-col ul li a:hover {
  color: var(--color-white);
}

.footer-copy {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  margin-top: 12px;
  font-size: 12px;
  color: #7a8499;
  text-align: center;
}

/* ==========================================================================
   Components - 通用组件
   ========================================================================== */

/* 面包屑 */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px var(--container-pad) 0;
  font-size: 13px;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb a {
  color: var(--color-muted);
}

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

.breadcrumb-sep {
  color: #c0c6d0;
}

.breadcrumb-current {
  color: var(--color-ink);
  font-weight: 500;
}

/* 页面标题区 */
.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 28px var(--container-pad) 20px;
}

.page-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-ink);
  margin-bottom: 8px;
  line-height: 1.3;
}

.page-description {
  font-size: 15px;
  color: var(--color-muted);
  max-width: 720px;
  margin-bottom: 0;
}

/* 漫画封面卡（分类页） */
.comic-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.comic-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-media {
  background-color: var(--color-blue-soft);
  aspect-ratio: 3 / 4;
  overflow: hidden;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.comic-card h4 {
  padding: 12px 14px 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
}

.comic-card .tags {
  padding: 0 14px 14px;
  font-size: 12px;
  color: var(--color-muted);
}

/* 推荐条目（长尾页共用） */
.recommend-item,
.recommendation-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  gap: 20px;
  transition: box-shadow var(--transition-base);
}

.recommend-item:hover,
.recommendation-item:hover {
  box-shadow: var(--shadow-md);
}

.recommend-cover,
.recommendation-media {
  flex-shrink: 0;
  width: 140px;
  background-color: var(--color-blue-soft);
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 3 / 4;
}

.recommend-cover img,
.recommendation-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.recommend-info,
.recommendation-content {
  flex: 1;
  min-width: 0;
}

.recommend-title,
.recommendation-content h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.recommend-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--color-deep);
  background-color: var(--color-blue-soft);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
  font-weight: 500;
}

.recommend-reason,
.recommendation-content p {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 8px;
}

.recommend-tip {
  font-size: 13px;
  color: var(--color-muted);
  background-color: #f8f9fb;
  border-left: 3px solid var(--color-accent);
  padding: 8px 12px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-top: 8px;
}

.recommend-tip strong {
  color: var(--color-ink);
  font-weight: 600;
}

/* 提示卡片（长尾页） */
.tip-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: box-shadow var(--transition-base);
}

.tip-card:hover {
  box-shadow: var(--shadow-md);
}

.tip-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.tip-card p {
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: 0;
}

.tip-card p a {
  color: var(--color-deep);
  font-weight: 500;
}

.tip-card p a:hover {
  color: var(--color-accent);
}

/* ==========================================================================
   Pages - 首页
   ========================================================================== */

/* Hero 区 */
.hero {
  background-color: var(--color-ink);
  background-image: linear-gradient(135deg, var(--color-ink) 0%, var(--color-navy) 60%, var(--color-deep) 100%);
  color: var(--color-white);
}

.hero {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px var(--container-pad) 48px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.hero-copy {
  min-width: 0;
}

.hero-copy h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.25;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.7;
  color: #c8cdd8;
  margin-bottom: 24px;
  max-width: 480px;
}

.hero-cta {
  margin-bottom: 0;
}

.hero-cta a {
  display: inline-block;
  padding: 10px 24px;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), transform var(--transition-base);
}

.hero-cta a:hover {
  background-color: #d63851;
  transform: translateY(-1px);
  color: var(--color-white);
}

.hero-media figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.hero-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

/* 题材分类快捷入口 */
.categories {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px var(--container-pad) 8px;
}

.categories h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.category-tags li a {
  display: inline-block;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-deep);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.category-tags li a:hover {
  background-color: var(--color-deep);
  color: var(--color-white);
  border-color: var(--color-deep);
}

/* 最近更新 */
.recent {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px var(--container-pad) 8px;
}

.recent h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.section-note {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 20px;
}

.update-group {
  margin-bottom: 24px;
}

.update-group h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-deep);
  margin-bottom: 12px;
  padding-left: 12px;
  border-left: 4px solid var(--color-accent);
}

.update-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.update-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  gap: 12px;
  align-items: center;
  transition: box-shadow var(--transition-base);
}

.update-item:hover {
  box-shadow: var(--shadow-md);
}

.update-item img {
  width: 56px;
  height: 72px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  background-color: var(--color-blue-soft);
}

.update-info {
  flex: 1;
  min-width: 0;
}

.item-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-meta {
  font-size: 12px;
  color: var(--color-muted);
  margin-bottom: 0;
}

.status-tag {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.status-tag.is-new {
  background-color: rgba(233, 69, 96, 0.1);
  color: var(--color-status-new);
}

.status-tag.is-update {
  background-color: rgba(15, 52, 96, 0.08);
  color: var(--color-status-update);
}

.status-tag.is-done {
  background-color: rgba(76, 175, 125, 0.1);
  color: var(--color-status-done);
}

/* 人气榜单 */
.popular {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px var(--container-pad) 8px;
}

.popular h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.popular-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.popular-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  transition: box-shadow var(--transition-base);
}

.popular-item:hover {
  box-shadow: var(--shadow-md);
}

.popular-item img {
  width: 64px;
  height: 84px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  background-color: var(--color-blue-soft);
}

.popular-info {
  flex: 1;
  min-width: 0;
}

.popular-info .item-title {
  font-size: 15px;
  margin-bottom: 6px;
  white-space: normal;
  overflow: visible;
  text-overflow: clip;
}

.popular-info .item-title a {
  color: var(--color-ink);
  font-weight: 600;
}

.popular-info .item-title a:hover {
  color: var(--color-accent);
}

.item-reason {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 阅读指南入口 */
.guide-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px var(--container-pad) 48px;
}

.guide-entry h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.guide-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.guide-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: box-shadow var(--transition-base);
}

.guide-card:hover {
  box-shadow: var(--shadow-md);
}

.guide-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 10px;
}

.guide-card h3 a {
  color: var(--color-ink);
}

.guide-card h3 a:hover {
  color: var(--color-accent);
}

.guide-card p {
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: 0;
}

/* ==========================================================================
   Pages - 分类页（categories.html）
   ========================================================================== */

.page-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 8px var(--container-pad) 48px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  align-items: start;
}

/* 侧栏：题材筛选（真实 DOM：aside.filters 在 section.list 之前） */
.filters {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  position: sticky;
  top: calc(var(--header-h) + 16px);
}

.filters h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
}

.filter-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.filter-list li a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.filter-list li a:hover {
  background-color: var(--color-blue-soft);
  color: var(--color-deep);
}

/* 分类列表区 */
.list {
  min-width: 0;
}

.list h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.category-block {
  margin-bottom: 32px;
}

.category-block h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-deep);
  margin-bottom: 14px;
  padding-left: 12px;
  border-left: 4px solid var(--color-accent);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

/* 内页链接 */
.inner-links {
  margin-top: 32px;
  padding: 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.inner-links p {
  font-size: 14px;
  margin-bottom: 0;
}

.inner-links a {
  color: var(--color-deep);
  font-weight: 500;
}

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

/* ==========================================================================
   Pages - 阅读指南页（guide.html）
   ========================================================================== */

.intro {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 8px var(--container-pad) 32px;
}

.intro h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.intro p {
  font-size: 15px;
  line-height: 1.8;
  max-width: 720px;
}

.guide-figure {
  margin: 16px 0 20px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-blue-soft);
}

.guide-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.guide-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-muted);
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
}

.steps {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 8px var(--container-pad) 32px;
}

.steps h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.steps > p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.steps-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.step-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  counter-increment: step-counter;
  position: relative;
}

.steps-list {
  counter-reset: step-counter;
}

.step-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
  padding-left: 36px;
  position: relative;
}

.step-item h3::before {
  content: counter(step-counter, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-size: 22px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1.2;
}

.step-item p {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 0;
}

.guide-tools {
  margin-top: 24px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-deep);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.guide-tools h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.guide-tools p {
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: 0;
}

.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 8px var(--container-pad) 48px;
}

.related-links h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.related-links p {
  font-size: 14px;
  margin-bottom: 0;
}

.related-links a {
  color: var(--color-deep);
  font-weight: 500;
}

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

/* ==========================================================================
   Pages - 恋爱漫画推荐（romance.html）
   ========================================================================== */

.recommendations {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 8px var(--container-pad) 32px;
}

.recommendations .section-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.recommendations .section-desc {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.recommendations {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.reading-tips {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 8px var(--container-pad) 48px;
}

.reading-tips .section-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.reading-tips .section-desc {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.tips-more {
  margin-top: 16px;
  font-size: 14px;
}

.tips-more a {
  color: var(--color-deep);
  font-weight: 500;
}

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

/* ==========================================================================
   Pages - 热血漫画推荐（action.html）
   ========================================================================== */

.recommendation-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tip-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

/* ==========================================================================
   Pages - 404
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px var(--container-pad);
  min-height: 60vh;
}

.error-panel {
  max-width: 560px;
  width: 100%;
  text-align: center;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  box-shadow: var(--shadow-sm);
}

.error-code {
  font-size: 64px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 12px;
}

.error-panel h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.error-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 20px;
}

.btn-home,
.btn-categories {
  display: inline-block;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), transform var(--transition-base);
}

.btn-home {
  background-color: var(--color-deep);
  color: var(--color-white);
}

.btn-home:hover {
  background-color: var(--color-navy);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-categories {
  background-color: var(--color-card);
  color: var(--color-deep);
  border: 1px solid var(--color-deep);
}

.btn-categories:hover {
  background-color: var(--color-blue-soft);
  color: var(--color-deep);
  transform: translateY(-1px);
}

.error-tip {
  font-size: 13px;
  color: var(--color-muted);
}

.error-tip a {
  color: var(--color-deep);
  font-weight: 500;
}

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

/* ==========================================================================
   Responsive - 响应式
   ========================================================================== */

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px var(--container-pad) 36px;
  }

  .hero-copy {
    text-align: left;
  }

  .hero-media {
    max-width: 560px;
  }

  .update-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-nav {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --container-pad: 16px;
  }

  .header-inner {
    height: 56px;
    gap: 12px;
  }

  .site-brand a {
    font-size: 17px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background-color: var(--color-ink);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px 12px;
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-list li a {
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 15px;
  }

  .nav-list li a.is-current {
    background-color: transparent;
    color: var(--color-accent);
  }

  .nav-list li a.is-current:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--color-accent);
  }

  .hero {
    padding: 32px 16px 28px;
  }

  .hero-copy h1 {
    font-size: 24px;
  }

  .hero-lead {
    font-size: 15px;
  }

  .categories,
  .recent,
  .popular,
  .guide-entry {
    padding-left: 16px;
    padding-right: 16px;
  }

  .update-list {
    grid-template-columns: 1fr;
  }

  .popular-list {
    grid-template-columns: 1fr;
  }

  .guide-cards {
    grid-template-columns: 1fr;
  }

  .page-header {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-title {
    font-size: 24px;
  }

  .breadcrumb {
    padding-left: 16px;
    padding-right: 16px;
  }

  /* 分类页：移动端主内容在前，侧栏在后 */
  .page-layout {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .filters {
    position: static;
    order: 2;
  }

  .list {
    order: 1;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .steps-list {
    grid-template-columns: 1fr;
  }

  .tips-grid {
    grid-template-columns: 1fr;
  }

  .tip-grid {
    grid-template-columns: 1fr;
  }

  .recommend-item,
  .recommendation-item {
    flex-direction: column;
    padding: 16px;
  }

  .recommend-cover,
  .recommendation-media {
    width: 100%;
    aspect-ratio: 16 / 10;
  }

  .recommend-cover img,
  .recommendation-media img {
    object-fit: cover;
  }

  .footer-inner {
    padding: 36px 16px 20px;
  }

  .footer-nav {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-copy {
    text-align: left;
  }

  .error-panel {
    padding: 32px 20px;
  }

  .error-code {
    font-size: 48px;
  }

  .error-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn-home,
  .btn-categories {
    width: 100%;
    max-width: 240px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-copy h1 {
    font-size: 21px;
  }

  .hero-media {
    max-width: 100%;
  }

  .category-tags li a {
    padding: 7px 14px;
    font-size: 13px;
  }

  .update-item {
    padding: 10px;
  }

  .update-item img {
    width: 48px;
    height: 64px;
  }

  .popular-item {
    padding: 12px;
  }

  .popular-item img {
    width: 56px;
    height: 72px;
  }

  .guide-card {
    padding: 18px;
  }

  .step-item {
    padding: 16px;
  }

  .step-item h3 {
    padding-left: 32px;
  }

  .step-item h3::before {
    font-size: 18px;
  }

  .recommend-item,
  .recommendation-item {
    padding: 14px;
  }
}