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

/* ===== 自定义属性 ===== */
:root {
  --c-parchment: #f5e6c8;
  --c-amber: #d4a574;
  --c-ink: #262117;
  --c-ink-soft: #4a3c2a;
  --c-amber-dark: #b8864e;
  --c-amber-pale: #eedcba;
  --c-parchment-dark: #e8d4a8;
  --c-white: #fffdf8;
  --c-border: rgba(38,33,23,0.18);
  --c-border-amber: rgba(212,165,116,0.5);

  --ff-serif: 'Noto Serif TC', 'Georgia', 'Times New Roman', serif;
  --ff-sans: 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;

  --fs-base: 17px;
  --lh-base: 1.75;
  --fs-sm: 14px;
  --fs-xs: 12px;
  --fs-lg: 20px;
  --fs-xl: 26px;
  --fs-2xl: 34px;
  --fs-3xl: 48px;

  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;

  --radius-card: 18px;
  --radius-sm: 6px;
  --max-content: 760px;
  --max-wide: 1100px;

  --shadow-card: none;
  --trans-std: 0.22s ease;
}

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

html {
  font-size: var(--fs-base);
  scroll-behavior: smooth;
  background: var(--c-parchment);
  color: var(--c-ink);
}

body {
  font-family: var(--ff-sans);
  line-height: var(--lh-base);
  background: var(--c-parchment);
  color: var(--c-ink);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* 全局胶片颗粒叠层 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='grain'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23grain)' opacity='1'/%3E%3C/svg%3E");
  background-repeat: repeat;
}

img { display: block; max-width: 100%; height: auto; }
a { color: var(--c-ink); text-decoration: none; transition: color var(--trans-std); }
a:hover { color: var(--c-amber-dark); }
ul, ol { list-style: none; }
table { border-collapse: collapse; width: 100%; }

/* ===== 头部 ===== */
.site-header {
  background: var(--c-ink);
  color: var(--c-parchment);
  position: sticky;
  top: 0;
  z-index: 200;
  border-bottom: 2px solid var(--c-amber);
}

.header-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3) var(--sp-6);
  border-bottom: 1px solid rgba(212,165,116,0.3);
  gap: var(--sp-4);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  color: var(--c-parchment);
  text-decoration: none;
  flex-shrink: 0;
}

.brand-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
  filter: sepia(0.3) brightness(1.1);
}

.brand-name {
  font-family: var(--ff-serif);
  font-size: var(--fs-xl);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--c-amber);
}

.header-search {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
}

.header-search input {
  background: rgba(245,230,200,0.1);
  border: 1px solid var(--c-border-amber);
  color: var(--c-parchment);
  padding: var(--sp-2) var(--sp-3);
  font-family: var(--ff-sans);
  font-size: var(--fs-sm);
  border-radius: var(--radius-sm);
  width: 180px;
  min-height: 40px;
}

.header-search input::placeholder { color: rgba(245,230,200,0.5); }

.header-search input:focus {
  outline: 2px solid var(--c-amber);
  outline-offset: 1px;
  background: rgba(245,230,200,0.15);
}

.header-search button {
  background: var(--c-amber);
  color: var(--c-ink);
  border: none;
  padding: var(--sp-2) var(--sp-4);
  font-family: var(--ff-sans);
  font-size: var(--fs-sm);
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-height: 40px;
  min-width: 40px;
  transition: background var(--trans-std);
}

.header-search button:hover { background: var(--c-amber-dark); }

.header-nav {
  display: flex;
  align-items: center;
  padding: 0 var(--sp-6);
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.header-nav::-webkit-scrollbar { display: none; }

.nav-link {
  color: rgba(245,230,200,0.8);
  font-size: var(--fs-sm);
  font-family: var(--ff-sans);
  padding: var(--sp-3) var(--sp-4);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color var(--trans-std), border-color var(--trans-std);
  min-height: 44px;
  display: flex;
  align-items: center;
}

.nav-link:hover {
  color: var(--c-amber);
  border-bottom-color: var(--c-amber);
}

.nav-link--active {
  color: var(--c-amber);
  border-bottom-color: var(--c-amber);
}

/* ===== 页面包装 ===== */
.page-wrapper {
  min-height: 60vh;
}

.main-content {
  width: 100%;
}

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

.hero-media,
.topic-hero__media,
.article-hero__media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: sepia(0.45) contrast(0.85) saturate(0.75) brightness(0.6);
  transform: scale(1.04);
  transition: transform 8s ease;
}

.hero--home:hover .hero-bg-img,
.topic-hero:hover .hero-bg-img,
.article-hero:hover .hero-bg-img {
  transform: scale(1.0);
}

/* 胶片颗粒 */
.hero-grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23g)' opacity='1'/%3E%3C/svg%3E");
  background-repeat: repeat;
  opacity: 0.12;
  mix-blend-mode: overlay;
}

/* 光晕漏光 */
.hero-leak {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 55%;
  height: 80%;
  background: radial-gradient(ellipse at center, rgba(212,165,116,0.35) 0%, rgba(212,165,116,0.1) 40%, transparent 70%);
  pointer-events: none;
  mix-blend-mode: screen;
  animation: leakPulse 6s ease-in-out infinite alternate;
}

@keyframes leakPulse {
  from { opacity: 0.6; transform: scale(1); }
  to { opacity: 1; transform: scale(1.08); }
}

/* 斜切底边 */
.hero-arc {
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--c-parchment);
  clip-path: polygon(0 100%, 100% 100%, 100% 40%, 0 100%);
  pointer-events: none;
}

/* Hero 文案 */
.hero-body {
  position: relative;
  z-index: 2;
  padding: var(--sp-8) var(--sp-6) calc(var(--sp-7) + 40px) var(--sp-6);
  max-width: var(--max-wide);
  width: 100%;
  margin: 0 auto;
}

.hero-body--right {
  text-align: right;
  padding-right: var(--sp-8);
}

.hero-eyebrow {
  display: inline-block;
  font-size: var(--fs-xs);
  font-family: var(--ff-sans);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--c-amber);
  border: 1px solid var(--c-amber);
  padding: 3px 10px;
  margin-bottom: var(--sp-3);
  border-radius: 2px;
}

.hero-h1,
.topic-h1,
.article-h1,
.inner-h1 {
  font-family: var(--ff-serif);
  font-weight: 700;
  color: var(--c-parchment);
  line-height: 1.2;
  text-shadow: 0 2px 12px rgba(0,0,0,0.6);
}

.hero-h1 {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  margin-bottom: var(--sp-4);
}

.hero-sub {
  font-size: var(--fs-base);
  color: rgba(245,230,200,0.85);
  max-width: 480px;
  margin-left: auto;
  line-height: 1.6;
}

/* 超大背景文字 */
.hero-bigtext {
  position: absolute;
  bottom: 40px;
  left: var(--sp-5);
  font-family: var(--ff-serif);
  font-size: clamp(4rem, 12vw, 9rem);
  font-weight: 700;
  color: rgba(245,230,200,0.06);
  letter-spacing: 0.08em;
  user-select: none;
  pointer-events: none;
  line-height: 1;
  z-index: 1;
}

/* topic/article hero body */
.topic-hero__body,
.article-hero__body {
  position: relative;
  z-index: 2;
  padding: var(--sp-8) var(--sp-6) calc(var(--sp-7) + 40px) var(--sp-6);
  max-width: var(--max-wide);
  width: 100%;
  margin: 0 auto;
}

.topic-h1,
.article-h1 {
  font-size: clamp(1.4rem, 3.5vw, 2.2rem);
  margin-top: var(--sp-3);
  margin-bottom: var(--sp-3);
}

.topic-date,
.article-date,
.article-updated,
.child-date,
.card-date,
.sib-date,
.privacy-date {
  font-size: var(--fs-sm);
  color: var(--c-amber);
  font-family: var(--ff-sans);
  display: inline-block;
}

.article-meta {
  display: flex;
  gap: var(--sp-4);
  align-items: center;
  flex-wrap: wrap;
}

.article-updated {
  color: rgba(245,230,200,0.65);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  font-size: var(--fs-sm);
  color: rgba(245,230,200,0.65);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-1);
  margin-bottom: var(--sp-3);
}

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

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

.bc-sep {
  opacity: 0.5;
  margin: 0 2px;
}

/* ===== 内页 header（about/privacy）===== */
.inner-page-header {
  background: var(--c-ink);
  padding: var(--sp-8) var(--sp-6) var(--sp-7);
  position: relative;
  overflow: hidden;
}

.inner-h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.4rem);
  margin-top: var(--sp-3);
  padding-bottom: var(--sp-3);
  border-bottom: 2px solid var(--c-amber);
}

.inner-page-deco {
  position: absolute;
  right: var(--sp-5);
  bottom: var(--sp-3);
  font-family: var(--ff-serif);
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 700;
  color: rgba(245,230,200,0.05);
  user-select: none;
  pointer-events: none;
  line-height: 1;
}

.privacy-date {
  display: block;
  margin-top: var(--sp-2);
  color: rgba(245,230,200,0.6);
}

/* ===== 内容正文 ===== */
.home-content-section,
.topic-body,
.article-body,
.about-body,
.privacy-body {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: var(--sp-7) var(--sp-5);
}

/* content HTML 片段样式 */
.content-body,
.topic-content,
.article-content,
.about-content,
.privacy-content {
  font-family: var(--ff-serif);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--c-ink);
}

.content-body h2,
.topic-content h2,
.article-content h2,
.about-content h2,
.privacy-content h2 {
  font-family: var(--ff-serif);
  font-size: var(--fs-xl);
  font-weight: 700;
  margin-top: var(--sp-7);
  margin-bottom: var(--sp-3);
  color: var(--c-ink);
  padding-bottom: var(--sp-2);
}

.content-body h2 + hr,
.topic-content h2 + hr,
.article-content h2 + hr,
.about-content h2 + hr,
.privacy-content h2 + hr {
  border: none;
  border-top: 2px solid var(--c-amber);
  margin-bottom: var(--sp-4);
}

.content-body h3,
.topic-content h3,
.article-content h3,
.about-content h3,
.privacy-content h3 {
  font-family: var(--ff-serif);
  font-size: var(--fs-lg);
  font-weight: 600;
  margin-top: var(--sp-6);
  margin-bottom: var(--sp-3);
  color: var(--c-ink-soft);
}

.content-body p,
.topic-content p,
.article-content p,
.about-content p,
.privacy-content p {
  margin-bottom: var(--sp-5);
  color: var(--c-ink-soft);
}

.content-body a,
.topic-content a,
.article-content a,
.about-content a,
.privacy-content a {
  color: var(--c-amber-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.content-body a:hover,
.topic-content a:hover,
.article-content a:hover,
.about-content a:hover,
.privacy-content a:hover {
  color: var(--c-ink);
}

.content-body ul,
.topic-content ul,
.article-content ul,
.about-content ul,
.privacy-content ul {
  margin-bottom: var(--sp-5);
  padding-left: var(--sp-5);
  list-style: disc;
}

.content-body ol,
.topic-content ol,
.article-content ol,
.about-content ol,
.privacy-content ol {
  margin-bottom: var(--sp-5);
  padding-left: var(--sp-5);
  list-style: decimal;
}

.content-body li,
.topic-content li,
.article-content li,
.about-content li,
.privacy-content li {
  margin-bottom: var(--sp-2);
}

.content-body blockquote,
.topic-content blockquote,
.article-content blockquote,
.about-content blockquote,
.privacy-content blockquote {
  border-left: 4px solid var(--c-amber);
  padding: var(--sp-4) var(--sp-5);
  margin: var(--sp-6) 0;
  background: var(--c-amber-pale);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
}

.content-body img,
.topic-content img,
.article-content img,
.about-content img,
.privacy-content img {
  border-radius: var(--radius-card);
  border: 6px solid var(--c-parchment-dark);
  box-shadow: 4px 4px 0 var(--c-amber);
  margin: var(--sp-6) auto;
  filter: sepia(0.2) contrast(0.9) saturate(0.85);
  max-width: 100%;
}

.content-body time,
.topic-content time,
.article-content time,
.about-content time,
.privacy-content time {
  font-size: var(--fs-sm);
  color: var(--c-amber-dark);
  font-family: var(--ff-sans);
}

/* ===== section heading ===== */
.section-heading {
  font-family: var(--ff-serif);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: var(--sp-2);
}

.section-rule {
  border: none;
  border-top: 2px solid var(--c-amber);
  margin-bottom: var(--sp-5);
}

/* ===== 首页专题表格 ===== */
.topics-section {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 var(--sp-5) var(--sp-8);
}

.topic-table {
  width: 100%;
  border-spacing: 0;
}

.topic-row {
  border-bottom: 1px solid var(--c-border);
}

.topic-cell {
  padding: var(--sp-2) 0;
}

.topic-card {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding: var(--sp-5);
  border: 1px solid var(--c-border-amber);
  border-radius: var(--radius-card);
  background: var(--c-white);
  color: var(--c-ink);
  text-decoration: none;
  transition: border-color var(--trans-std), background var(--trans-std), transform var(--trans-std);
  margin-bottom: var(--sp-3);
  position: relative;
  overflow: hidden;
}

.topic-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='gx'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23gx)' opacity='1'/%3E%3C/svg%3E") repeat;
  opacity: 0.03;
  pointer-events: none;
}

.topic-card:hover {
  border-color: var(--c-amber);
  background: var(--c-parchment);
  transform: translateY(-3px);
}

.topic-card__eyebrow {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-amber-dark);
  font-family: var(--ff-sans);
}

.topic-card__title {
  font-family: var(--ff-serif);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--c-ink);
  line-height: 1.3;
}

.topic-card__desc {
  font-size: var(--fs-sm);
  color: var(--c-ink-soft);
  line-height: 1.55;
}

.topic-card__count {
  font-size: var(--fs-sm);
  color: var(--c-amber-dark);
  font-weight: 500;
  margin-top: var(--sp-2);
}

.card-date {
  font-size: var(--fs-xs);
  color: rgba(38,33,23,0.45);
}

/* ===== 专题子页列表 ===== */
.children-table {
  width: 100%;
}

.child-row {
  border-bottom: 1px solid var(--c-border);
  transition: background var(--trans-std);
}

.child-row:hover {
  background: var(--c-amber-pale);
}

.child-num {
  font-family: var(--ff-serif);
  font-size: var(--fs-2xl);
  font-weight: 700;
  color: rgba(212,165,116,0.4);
  width: 56px;
  padding: var(--sp-4) var(--sp-3) var(--sp-4) 0;
  vertical-align: top;
  white-space: nowrap;
}

.child-info {
  padding: var(--sp-4) 0;
  vertical-align: top;
}

.child-link {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  color: var(--c-ink);
  text-decoration: none;
}

.child-link:hover .child-title {
  color: var(--c-amber-dark);
}

.child-title {
  font-family: var(--ff-serif);
  font-size: var(--fs-lg);
  font-weight: 600;
  line-height: 1.3;
  transition: color var(--trans-std);
}

.child-desc {
  font-size: var(--fs-sm);
  color: var(--c-ink-soft);
  line-height: 1.5;
}

.child-date {
  display: block;
  margin-top: var(--sp-2);
}

.no-children {
  color: var(--c-ink-soft);
  font-size: var(--fs-sm);
  padding: var(--sp-5) 0;
}

/* ===== 相关文章 ===== */
.article-related {
  margin-top: var(--sp-8);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--c-border);
}

.related-table {
  width: 100%;
}

.sib-row {
  border-bottom: 1px solid var(--c-border);
  transition: background var(--trans-std);
}

.sib-row:hover { background: var(--c-amber-pale); }

.sib-cell {
  padding: var(--sp-3) 0;
}

.sib-link {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  color: var(--c-ink);
  text-decoration: none;
}

.sib-link:hover .sib-title { color: var(--c-amber-dark); }

.sib-title {
  font-family: var(--ff-serif);
  font-size: var(--fs-base);
  font-weight: 600;
  transition: color var(--trans-std);
}

/* ===== 返回链接 ===== */
.article-back,
.about-nav-links,
.privacy-footer-nav {
  display: flex;
  gap: var(--sp-5);
  flex-wrap: wrap;
  margin-top: var(--sp-7);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--c-border);
}

.back-link {
  font-family: var(--ff-sans);
  font-size: var(--fs-sm);
  color: var(--c-amber-dark);
  text-decoration: none;
  font-weight: 500;
  padding: var(--sp-2) var(--sp-4);
  border: 1px solid var(--c-border-amber);
  border-radius: var(--radius-sm);
  transition: background var(--trans-std), color var(--trans-std);
  min-height: 40px;
  display: flex;
  align-items: center;
}

.back-link:hover {
  background: var(--c-amber);
  color: var(--c-ink);
  border-color: var(--c-amber);
}

/* ===== About 专题表 ===== */
.about-topic-table {
  width: 100%;
  margin-top: var(--sp-4);
}

.about-topic-row {
  border-bottom: 1px solid var(--c-border);
  transition: background var(--trans-std);
}

.about-topic-row:hover { background: var(--c-amber-pale); }

.about-topic-num {
  font-family: var(--ff-serif);
  font-size: var(--fs-2xl);
  font-weight: 700;
  color: rgba(212,165,116,0.35);
  width: 56px;
  padding: var(--sp-4) var(--sp-3) var(--sp-4) 0;
  vertical-align: top;
}

.about-topic-cell {
  padding: var(--sp-4) 0;
  vertical-align: top;
}

.about-topic-link {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  color: var(--c-ink);
  text-decoration: none;
}

.about-topic-link:hover strong { color: var(--c-amber-dark); }

.about-topic-link strong {
  font-family: var(--ff-serif);
  font-size: var(--fs-lg);
  font-weight: 600;
  transition: color var(--trans-std);
}

.about-topic-link span {
  font-size: var(--fs-sm);
  color: var(--c-ink-soft);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--c-ink);
  color: var(--c-parchment);
  margin-top: var(--sp-8);
  border-top: 3px solid var(--c-amber);
}

.footer-inner {
  display: flex;
  gap: var(--sp-6);
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: var(--sp-7) var(--sp-6) var(--sp-6);
  flex-wrap: wrap;
}

.footer-col {
  flex: 1 1 220px;
}

.footer-col__title {
  font-family: var(--ff-serif);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--c-amber);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-2);
  border-bottom: 1px solid rgba(212,165,116,0.3);
  display: block;
}

.footer-col dd {
  margin-bottom: var(--sp-2);
}

.footer-col dd a {
  color: rgba(245,230,200,0.75);
  font-size: var(--fs-sm);
  transition: color var(--trans-std);
  min-height: 40px;
  display: flex;
  align-items: center;
}

.footer-col dd a:hover { color: var(--c-amber); }

.footer-col__body {
  font-size: var(--fs-sm);
  color: rgba(245,230,200,0.65);
  line-height: 1.65;
}

.footer-bottom {
  text-align: center;
  padding: var(--sp-4) var(--sp-6);
  border-top: 1px solid rgba(212,165,116,0.2);
  font-size: var(--fs-xs);
  color: rgba(245,230,200,0.45);
}

/* ===== Polaroid 图片（正文里） ===== */
.article-content figure,
.topic-content figure {
  margin: var(--sp-6) auto;
  max-width: 480px;
}

.article-content figure img,
.topic-content figure img {
  border: 8px solid var(--c-white);
  border-bottom-width: 32px;
  border-radius: 2px;
  box-shadow: 2px 4px 16px rgba(38,33,23,0.25);
  transform: rotate(-1.5deg);
  transition: transform var(--trans-std);
  filter: sepia(0.25) contrast(0.9) saturate(0.8);
}

.article-content figure img:hover,
.topic-content figure img:hover {
  transform: rotate(0deg) scale(1.02);
}

/* ===== 精简动效（prefers-reduced-motion）===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .hero-bg-img, .hero--home:hover .hero-bg-img,
  .topic-hero:hover .hero-bg-img,
  .article-hero:hover .hero-bg-img {
    transform: none !important;
  }
  .hero-leak { animation: none !important; }
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  :root {
    --fs-base: 16px;
  }

  .header-brand-row {
    padding: var(--sp-2) var(--sp-4);
    flex-wrap: wrap;
    gap: var(--sp-2);
  }

  .header-search {
    flex: 1 1 100%;
    order: 2;
  }

  .header-search input {
    flex: 1;
    width: auto;
  }

  .brand-logo { order: 1; }

  .header-nav {
    padding: 0 var(--sp-3);
    gap: 0;
  }

  .nav-link {
    padding: var(--sp-3) var(--sp-3);
    font-size: 13px;
  }

  .hero,
  .topic-hero,
  .article-hero {
    min-height: 42vh;
  }

  .hero-body,
  .topic-hero__body,
  .article-hero__body {
    padding: var(--sp-6) var(--sp-4) calc(var(--sp-7) + 30px);
  }

  .hero-body--right {
    text-align: left;
    padding-right: var(--sp-4);
  }

  .hero-sub {
    margin-left: 0;
  }

  .hero-bigtext {
    font-size: clamp(3rem, 18vw, 6rem);
  }

  .inner-page-header {
    padding: var(--sp-6) var(--sp-4) var(--sp-6);
  }

  .home-content-section,
  .topic-body,
  .article-body,
  .about-body,
  .privacy-body {
    padding: var(--sp-5) var(--sp-4);
  }

  .topics-section {
    padding: 0 var(--sp-4) var(--sp-7);
  }

  .child-num,
  .about-topic-num {
    display: none;
  }

  .footer-inner {
    padding: var(--sp-6) var(--sp-4);
    flex-direction: column;
    gap: var(--sp-5);
  }

  .footer-col {
    flex: none;
    width: 100%;
  }

  .article-back,
  .about-nav-links,
  .privacy-footer-nav {
    flex-direction: column;
    gap: var(--sp-3);
  }
}

@media (max-width: 480px) {
  .brand-name {
    font-size: var(--fs-lg);
  }

  .hero-h1,
  .topic-h1,
  .article-h1 {
    font-size: 1.5rem;
  }

  .inner-h1 {
    font-size: 1.4rem;
  }

  .section-heading {
    font-size: var(--fs-lg);
  }

  .topic-card {
    padding: var(--sp-4);
  }

  .topic-card__title {
    font-size: var(--fs-base);
  }
}