@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Noto+Serif+JP:wght@400;500;600;700&display=swap');

/* ============================================================
   CSS 变量 & 重置
   ============================================================ */
:root {
  --ink: #1a1a1a;
  --paper: #fdfbf7;
  --paper-mid: #f5f5f5;
  --paper-dark: #ece9e2;
  --border: #d4d0c8;
  --border-strong: #1a1a1a;
  --ink-muted: #5a5a5a;
  --ink-faint: #888880;
  --sidenav-w: 240px;
  --sidenav-collapsed: 56px;
  --font-serif: 'Noto Serif JP', 'Georgia', 'Times New Roman', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
  --radius: 10px;
  --transition: none;
}

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

html {
  font-size: 17px;
  line-height: 1.7;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-serif);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: auto;
}

body {
  min-height: 100vh;
  background: var(--paper);
  position: relative;
  overflow-x: hidden;
}

/* 纸张纹理叠加 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}
a:hover {
  text-decoration-thickness: 2px;
}

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

ul, ol { list-style: none; }

button {
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
}

input {
  font-family: inherit;
}

/* 无障碍 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   页面骨架
   ============================================================ */
.page-shell {
  display: flex;
  min-height: 100vh;
}

/* ============================================================
   左侧固定导航 (aside > nav > ul > li > a)
   ============================================================ */
.sidenav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidenav-w);
  background: var(--paper-mid);
  border-right: 1px solid var(--border-strong);
  display: flex;
  flex-direction: column;
  z-index: 200;
  overflow-y: auto;
  overflow-x: hidden;
  transition: var(--transition);
}

.sidenav.collapsed {
  width: var(--sidenav-collapsed);
}

.sidenav-brand {
  padding: 20px 16px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1rem;
  border-radius: 2px;
}

.brand-icon:hover {
  opacity: 0.85;
}

.site-logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.site-logo-text {
  font-size: 1.2rem;
  font-weight: 700;
  font-family: var(--font-serif);
}

.sidenav-search {
  padding: 12px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.search-input {
  width: 100%;
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 6px 10px;
  font-size: 0.85rem;
  font-family: var(--font-sans);
  color: var(--ink);
  outline: none;
  border-radius: 2px;
}

.search-input:focus {
  border-color: var(--ink);
}

.sidenav nav {
  flex: 1;
  padding: 8px 0;
}

.sidenav nav ul {
  display: flex;
  flex-direction: column;
}

.sidenav nav ul li {
  border-bottom: 1px solid var(--border);
}

.sidenav nav ul li a {
  display: block;
  padding: 12px 16px;
  font-size: 0.82rem;
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.4;
  color: var(--ink);
  text-decoration: none;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.sidenav nav ul li a:hover {
  background: var(--paper-dark);
}

.sidenav nav ul li a[aria-current="page"] {
  font-weight: 700;
  background: var(--paper-dark);
  border-left: 3px solid var(--ink);
  padding-left: 13px;
}

.sidenav-toggle {
  position: absolute;
  bottom: 16px;
  right: 8px;
  width: 36px;
  height: 36px;
  background: var(--paper);
  border: 1px solid var(--border);
  font-size: 1rem;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  z-index: 10;
}

/* collapsed 时导航文字隐藏 */
.sidenav.collapsed .sidenav-search,
.sidenav.collapsed nav ul li a span {
  display: none;
}

/* ============================================================
   主内容区
   ============================================================ */
.main-wrap {
  margin-left: var(--sidenav-w);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* ============================================================
   Hero（首页）
   ============================================================ */
.hero-wrap {
  position: relative;
  min-height: 45vh;
  background: var(--ink);
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}

.hero-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-media .hero-img,
.hero-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-placeholder {
  background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26,26,26,0.62);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 48px 48px 48px;
  max-width: 680px;
}

.hero-eyebrow {
  font-size: 0.78rem;
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: 0.12em;
  color: rgba(253,251,247,0.7);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.hero-h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--paper);
  line-height: 1.25;
  margin-bottom: 16px;
}

.hero-lead {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: rgba(253,251,247,0.85);
  line-height: 1.6;
  margin-bottom: 24px;
}

.hero-cta {
  display: inline-block;
  padding: 10px 24px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  border-radius: var(--radius);
  min-height: 44px;
  line-height: 24px;
}

.hero-cta:hover {
  background: var(--paper-dark);
}

/* ============================================================
   分区 banner / 标题区
   ============================================================ */
.section-banner,
.tag-banner,
.about-banner,
.privacy-banner,
.generic-banner {
  background: var(--paper-mid);
  border-bottom: 1px solid var(--border-strong);
  padding: 40px 48px 32px;
}

.section-banner h1,
.tag-banner h1,
.about-banner h1,
.privacy-banner h1,
.generic-banner h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 10px;
}

.subtitle {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  color: var(--ink-muted);
  line-height: 1.5;
  margin-top: 6px;
}

.breadcrumb {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--ink-faint);
  margin-bottom: 12px;
}

.breadcrumb a {
  color: var(--ink-muted);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* ============================================================
   story banner（文章页）
   ============================================================ */
.story-hero-wrap {
  position: relative;
  height: 40vh;
  min-height: 200px;
  background: var(--ink);
  overflow: hidden;
}

.story-hero-wrap .hero-media {
  position: absolute;
  inset: 0;
}

.story-hero-wrap .hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============================================================
   内容 + 侧栏布局 (main > div > section + aside)
   ============================================================ */
.content-aside-wrap {
  display: flex;
  flex: 1;
  align-items: flex-start;
  gap: 0;
}

main#main-content {
  flex: 1;
  min-width: 0;
  border-right: 1px solid var(--border);
}

/* main > div > section 三层直接嵌套 */
main#main-content > div {
  padding: 0;
}

main#main-content > div > section {
  padding: 36px 48px;
  border-bottom: 1px solid var(--border);
}

main#main-content > div > section:last-child {
  border-bottom: none;
}

/* 正文容器 */
.page-content-body {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-content-body h2 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 1.6em 0 0.5em;
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
}

.page-content-body h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  margin: 1.2em 0 0.4em;
}

.page-content-body p {
  margin-bottom: 1em;
}

.page-content-body ul,
.page-content-body ol {
  list-style: disc;
  padding-left: 1.5em;
  margin-bottom: 1em;
}

.page-content-body ol {
  list-style: decimal;
}

.page-content-body li {
  margin-bottom: 0.3em;
}

.page-content-body a {
  color: var(--ink);
  text-decoration: underline;
}

.page-content-body blockquote {
  border-left: 3px solid var(--ink);
  padding-left: 1em;
  color: var(--ink-muted);
  margin: 1.2em 0;
  font-style: italic;
}

.page-content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2em 0;
  font-size: 0.9rem;
  font-family: var(--font-sans);
}

.page-content-body th,
.page-content-body td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}

.page-content-body th {
  background: var(--paper-mid);
  font-weight: 700;
}

/* 故事页元信息 */
.story-header-section {
  background: var(--paper-mid);
  border-bottom: 2px solid var(--border-strong) !important;
}

.story-meta-top {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.story-parent-link {
  color: var(--ink-muted);
  text-decoration: none;
  font-weight: 500;
}

.story-parent-link:hover { text-decoration: underline; }

.story-date, .story-mod-date {
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.story-h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 12px;
}

.story-lead {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--ink-muted);
  line-height: 1.6;
}

/* ============================================================
   侧边栏 (aside 在内容右侧)
   ============================================================ */
.content-aside {
  width: 240px;
  flex-shrink: 0;
  padding: 28px 20px;
  position: sticky;
  top: 0;
  max-height: 100vh;
  overflow-y: auto;
}

.aside-block {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.aside-block:last-child {
  border-bottom: none;
}

.aside-block h2 {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 4px;
}

.aside-block .subtitle {
  font-size: 0.78rem;
  margin-bottom: 10px;
  margin-top: 2px;
}

.aside-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 8px;
}

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

.aside-list li a {
  display: block;
  padding: 7px 0;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--ink);
  text-decoration: none;
  line-height: 1.4;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.aside-list li a:hover {
  text-decoration: underline;
}

/* ============================================================
   首页 — 精选卡片网格
   ============================================================ */
.featured-section,
.sections-overview {
  background: var(--paper);
}

.featured-section h2,
.sections-overview h2,
.children-section h2,
.tag-results-section h2,
.story-related-section h2,
.about-nav-section h2 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.feat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.feat-card {
  background: var(--paper-mid);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.feat-card .card-img-wrap {
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--paper-dark);
}

.feat-card .card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.feat-card .card-body {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 6px;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 8px;
}

.card-title a {
  color: var(--ink);
  text-decoration: none;
}

.card-title a:hover {
  text-decoration: underline;
}

.card-desc {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--ink-muted);
  line-height: 1.5;
  flex: 1;
  margin-bottom: 8px;
}

.card-date {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--ink-faint);
}

/* ============================================================
   首页 — 分区概览块
   ============================================================ */
.sec-blocks {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.sec-block {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  background: var(--paper);
}

.sec-block-head h3 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.sec-block-head h3 a {
  color: var(--ink);
  text-decoration: none;
}

.sec-block-head h3 a:hover { text-decoration: underline; }

.sec-block-head .subtitle {
  font-size: 0.78rem;
  margin-bottom: 12px;
}

.sec-block-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sec-block-list li a {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--ink-muted);
  text-decoration: none;
  display: block;
  padding: 4px 0;
}

.sec-block-list li a:hover { color: var(--ink); text-decoration: underline; }

.see-more a {
  font-weight: 700;
  color: var(--ink) !important;
}

/* ============================================================
   栏目页 / 标签页 — 子页列表 (dl > dt > a + dd)
   ============================================================ */
.children-dl {
  margin-top: 20px;
  border-top: 1px solid var(--border);
}

.children-dl dt {
  border-bottom: 1px solid var(--border);
  padding: 0;
  margin: 0;
}

.children-dl dt a {
  display: block;
  padding: 10px 0 4px;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.children-dl dt a:hover { text-decoration: underline; }

.children-dl dd {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--ink-muted);
  padding: 2px 0 12px;
  margin: 0;
}

/* ============================================================
   栏目页 — 文章卡片网格
   ============================================================ */
.story-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.story-card {
  background: var(--paper-mid);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.story-card .card-img-wrap {
  aspect-ratio: 16/9;
  background: var(--paper-dark);
  overflow: hidden;
}

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

.story-card .card-body {
  padding: 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* ============================================================
   文章页相关阅读
   ============================================================ */
.related-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.related-list li {
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}

.related-list li a {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  display: block;
  margin-bottom: 2px;
}

.related-list li a:hover { text-decoration: underline; }

.related-list li span {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--ink-muted);
}

/* ============================================================
   隐私页
   ============================================================ */
.privacy-update {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--ink-faint);
  margin-top: 8px;
}

.privacy-content {
  max-width: 720px;
}

/* ============================================================
   页脚 (footer > section×n)
   ============================================================ */
footer {
  border-top: 2px solid var(--border-strong);
  background: var(--paper-mid);
  margin-top: auto;
}

footer > section {
  border-bottom: 1px solid var(--border);
}

footer > section:last-child {
  border-bottom: none;
}

.footer-brand-section {
  padding: 40px 48px 32px;
}

.footer-brand-big {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.footer-brand-desc {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--ink-muted);
  max-width: 500px;
  line-height: 1.6;
}

.footer-links-section {
  padding: 32px 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col-head {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 12px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-col ul li a {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--ink-muted);
  text-decoration: none;
  display: block;
  padding: 4px 0;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.footer-col ul li a:hover {
  color: var(--ink);
  text-decoration: underline;
}

.footer-bottom-section {
  padding: 16px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-copy {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--ink-faint);
}

.footer-bottom-links {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--ink-faint);
}

.footer-bottom-links a {
  color: var(--ink-muted);
  text-decoration: none;
}

.footer-bottom-links a:hover { text-decoration: underline; }

/* ============================================================
   Scroll Reveal 动效
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(16px);
    animation: revealUp 0.45s ease forwards;
    animation-delay: var(--delay, 0ms);
  }

  @keyframes revealUp {
    to {
      opacity: 1;
      transform: none;
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    animation: none;
  }
}

/* ============================================================
   响应式 — 平板
   ============================================================ */
@media (max-width: 1100px) {
  .content-aside {
    width: 200px;
  }

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

@media (max-width: 900px) {
  :root {
    --sidenav-w: 200px;
  }

  main#main-content > div > section {
    padding: 28px 28px;
  }

  .hero-content {
    padding: 32px 28px;
  }

  .section-banner,
  .tag-banner,
  .about-banner,
  .privacy-banner,
  .generic-banner {
    padding: 28px 28px;
  }

  .footer-brand-section {
    padding: 28px 28px 20px;
  }

  .footer-links-section {
    padding: 24px 28px;
  }

  .footer-bottom-section {
    padding: 12px 28px;
  }

  .content-aside {
    width: 180px;
    padding: 20px 12px;
  }
}

/* ============================================================
   响应式 — 手机 (≤768px)
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --sidenav-w: 0px;
  }

  .sidenav {
    width: 260px;
    transform: translateX(-100%);
    box-shadow: 2px 0 16px rgba(0,0,0,0.15);
  }

  .sidenav.open {
    transform: translateX(0);
  }

  .main-wrap {
    margin-left: 0;
  }

  /* 顶部汉堡菜单 */
  .mobile-topbar {
    display: flex;
  }

  .content-aside-wrap {
    flex-direction: column;
  }

  main#main-content {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .content-aside {
    width: 100%;
    position: static;
    max-height: none;
    padding: 20px 20px;
    border-top: 1px solid var(--border);
  }

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

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

  .sec-blocks {
    grid-template-columns: 1fr 1fr;
  }

  .footer-links-section {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 20px 20px;
  }

  .footer-brand-section {
    padding: 20px 20px;
  }

  .footer-bottom-section {
    padding: 12px 20px;
    flex-direction: column;
    align-items: flex-start;
  }

  main#main-content > div > section {
    padding: 20px 20px;
  }

  .section-banner,
  .tag-banner,
  .about-banner,
  .privacy-banner,
  .generic-banner {
    padding: 20px 20px;
  }

  .hero-content {
    padding: 24px 20px;
  }

  .hero-wrap {
    min-height: 45vh;
  }

  .sidenav-toggle {
    position: fixed;
    bottom: 20px;
    right: 16px;
    width: 44px;
    height: 44px;
    background: var(--ink);
    color: var(--paper);
    border: none;
    border-radius: 2px;
    font-size: 1.1rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    z-index: 300;
  }
}

@media (max-width: 480px) {
  .sec-blocks {
    grid-template-columns: 1fr;
  }

  .footer-brand-big {
    font-size: 1.8rem;
  }
}

/* ============================================================
   通用工具
   ============================================================ */
.story-body-section {
  max-width: 720px;
}