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

/* =====================
   CSS 自定义属性
   ===================== */
:root {
  --c-black: #000000;
  --c-surface: #121212;
  --c-surface2: #1a1a1a;
  --c-surface3: #222222;
  --c-border: rgba(255,255,255,0.08);
  --c-border-hover: rgba(255,255,255,0.18);
  --c-white: #ffffff;
  --c-text: #e0e0e0;
  --c-muted: #888888;
  --c-accent: #c8a2c8;
  --c-accent2: #7eb8c9;
  --c-neon: #d4a8d4;
  --c-neon2: #89c4d4;
  --font-head: 'Rubik', 'Nunito Sans', system-ui, sans-serif;
  --font-body: 'Nunito Sans', system-ui, sans-serif;
  --radius: 4px;
  --radius-pill: 999px;
  --nav-h: 120px;
  --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  --glass-bg: rgba(255,255,255,0.04);
  --glass-border: rgba(255,255,255,0.09);
  --glass-blur: blur(12px);
}

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

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

body {
  background: var(--c-black);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

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

a {
  color: var(--c-accent);
  text-decoration: none;
  transition: color var(--transition), text-shadow var(--transition);
}

a:hover {
  color: var(--c-white);
  text-shadow: 0 0 10px var(--c-neon);
}

a:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: var(--radius);
}

ul, menu {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  line-height: 1.25;
  color: var(--c-white);
}

/* =====================
   站点头部
   ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--c-border);
}

.header-brand-row {
  display: flex;
  align-items: center;
  padding: 0.9rem 2rem;
  border-bottom: 1px solid var(--c-border);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--c-white);
  text-decoration: none;
}

.brand-logo:hover {
  text-shadow: 0 0 12px var(--c-neon);
  color: var(--c-white);
}

.logo-mark {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.brand-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--c-white);
}

.header-nav-row {
  padding: 0.5rem 2rem;
  overflow-x: auto;
  scrollbar-width: none;
}

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

/* details > summary + menu > li > a 结构 */
.nav-details {
  border: none;
  background: none;
}

.nav-details[open] > .nav-summary::after {
  transform: rotate(180deg);
}

.nav-summary {
  display: none;
  cursor: pointer;
  list-style: none;
  color: var(--c-muted);
  font-size: 0.85rem;
  padding: 0.5rem 0;
  user-select: none;
}

.nav-summary::-webkit-details-marker {
  display: none;
}

.nav-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 1rem;
  min-height: 40px;
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-pill);
  color: var(--c-text);
  font-size: 0.82rem;
  font-weight: 500;
  white-space: nowrap;
  transition: background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
  text-decoration: none;
}

.nav-pill:hover,
.nav-pill.active {
  background: var(--c-surface3);
  border-color: var(--c-accent);
  color: var(--c-white);
  box-shadow: 0 0 8px rgba(200,162,200,0.25);
  text-shadow: none;
}

/* =====================
   首页 Hero
   ===================== */
.hero-section {
  position: relative;
  min-height: 45vh;
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: center;
  gap: 2rem;
  padding: 3rem 2rem 2.5rem;
  overflow: hidden;
  background: linear-gradient(135deg, #0a0a0a 60%, #110d14 100%);
}

.hero-aside {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  z-index: 2;
}

.hero-bg-text {
  font-family: var(--font-head);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 700;
  color: rgba(255,255,255,0.03);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: -0.05em;
  pointer-events: none;
  user-select: none;
}

.hero-content {
  z-index: 2;
  text-align: right;
  max-width: 520px;
}

.hero-h1 {
  font-size: clamp(1.8rem, 4.5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-white);
  margin-bottom: 1rem;
  text-shadow: 0 0 30px rgba(200,162,200,0.2);
}

.hero-desc {
  font-size: 1rem;
  color: var(--c-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.8rem;
  min-height: 48px;
  background: var(--c-accent);
  color: var(--c-black);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}

.btn-primary:hover {
  background: var(--c-white);
  box-shadow: 0 0 16px rgba(200,162,200,0.5);
  transform: translateY(-2px);
  color: var(--c-black);
  text-shadow: none;
}

.hero-images {
  position: relative;
  width: 280px;
  height: 320px;
  flex-shrink: 0;
  z-index: 2;
}

.hero-img {
  position: absolute;
  width: 200px;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
}

.hero-img-1 {
  top: 0;
  left: 0;
  z-index: 2;
  filter: brightness(0.85);
}

.hero-img-2 {
  bottom: 0;
  right: 0;
  z-index: 1;
  filter: brightness(0.7);
}

.hero-overlay-text {
  position: absolute;
  bottom: -0.5rem;
  left: -0.5rem;
  font-family: var(--font-head);
  font-size: 4rem;
  font-weight: 700;
  color: rgba(255,255,255,0.06);
  z-index: 0;
  user-select: none;
  pointer-events: none;
}

/* =====================
   通用 div 布局
   ===================== */
.faq-index-section,
.articles-section,
.content-section {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  padding: 3rem 2rem;
  border-top: 1px solid var(--c-border);
}

.section-aside {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-top: 0.5rem;
}

.section-eyebrow,
.eyebrow-label,
.hero-eyebrow,
.sidebar-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 0.5rem;
}

.section-body {
  min-width: 0;
}

.section-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--c-white);
}

/* =====================
   玻璃卡片
   ===================== */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1.4rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.glass-card:hover {
  border-color: var(--c-accent);
  box-shadow: 0 0 16px rgba(200,162,200,0.12);
  transform: translateY(-3px);
}

.faq-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.faq-card {
  position: relative;
}

.card-num {
  display: block;
  font-family: var(--font-head);
  font-size: 1.8rem;
  font-weight: 700;
  color: rgba(200,162,200,0.2);
  margin-bottom: 0.5rem;
  line-height: 1;
}

.faq-card h3 {
  font-size: 0.97rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--c-white);
}

.faq-card h3 a {
  color: inherit;
  text-decoration: none;
}

.faq-card h3 a:hover {
  color: var(--c-accent);
  text-shadow: 0 0 8px var(--c-neon);
}

.card-desc {
  font-size: 0.85rem;
  color: var(--c-muted);
  margin-bottom: 0.8rem;
  line-height: 1.55;
}

.card-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-accent2);
}

.card-link:hover {
  color: var(--c-white);
  text-shadow: 0 0 8px var(--c-neon2);
}

/* =====================
   文章表格
   ===================== */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
}

.articles-table,
.child-table {
  width: 100%;
  border-collapse: collapse;
}

.articles-table tbody tr,
.child-table tbody tr {
  border-bottom: 1px solid var(--c-border);
  transition: background var(--transition);
}

.articles-table tbody tr:last-child,
.child-table tbody tr:last-child {
  border-bottom: none;
}

.articles-table tbody tr:hover,
.child-table tbody tr:hover {
  background: var(--c-surface2);
}

.articles-table td,
.child-table td {
  padding: 0.9rem 1rem;
  font-size: 0.9rem;
  vertical-align: middle;
}

.tbl-title a,
.ci-title a {
  color: var(--c-white);
  font-weight: 600;
}

.tbl-title a:hover,
.ci-title a:hover {
  color: var(--c-accent);
  text-shadow: 0 0 8px var(--c-neon);
}

.tbl-desc,
.ci-desc {
  color: var(--c-muted);
  font-size: 0.85rem;
}

.tbl-date,
.ci-date {
  color: var(--c-muted);
  font-size: 0.8rem;
  white-space: nowrap;
}

.ci-num {
  width: 48px;
}

.row-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--c-surface3);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--c-accent);
}

/* =====================
   首页正文内容
   ===================== */
.home-content .page-content {
  max-width: 720px;
}

/* =====================
   FAQ 页
   ===================== */
.page-hero-section,
.faq-hero,
.about-hero-section,
.privacy-hero-section,
.article-header-section {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  padding: 3rem 2rem 2rem;
  border-bottom: 1px solid var(--c-border);
  background: linear-gradient(135deg, #0a0a0a 70%, #0d0a10 100%);
  position: relative;
  overflow: hidden;
}

.page-hero-aside,
.about-aside,
.privacy-aside,
.article-meta-aside {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.8rem;
  z-index: 2;
}

.page-hero-bg,
.about-bg-text,
.privacy-bg-text,
.article-bg-num {
  font-family: var(--font-head);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700;
  color: rgba(255,255,255,0.03);
  writing-mode: vertical-rl;
  letter-spacing: -0.05em;
  pointer-events: none;
  user-select: none;
  line-height: 1;
}

.page-hero-content,
.about-hero-content,
.privacy-hero-content,
.article-header-content {
  z-index: 2;
  min-width: 0;
}

.page-h1,
.article-h1 {
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.page-desc,
.article-desc {
  font-size: 1rem;
  color: var(--c-muted);
  margin-bottom: 1rem;
  line-height: 1.65;
  max-width: 600px;
}

/* =====================
   面包屑
   ===================== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--c-muted);
  margin-bottom: 1rem;
}

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

.breadcrumb a:hover {
  color: var(--c-accent);
  text-shadow: none;
}

.breadcrumb span[aria-hidden] {
  color: rgba(255,255,255,0.2);
}

/* =====================
   侧边栏 + 内容布局
   ===================== */
.faq-content-section,
.article-body-section,
.about-content-section,
.privacy-body-section {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 0;
  min-height: 60vh;
}

.faq-sidebar,
.article-sidebar,
.about-sidebar,
.privacy-sidebar {
  padding: 2.5rem 1.5rem;
  border-right: 1px solid var(--c-border);
  background: var(--c-surface);
  position: sticky;
  top: var(--nav-h);
  height: fit-content;
  min-height: 200px;
}

.sidebar-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: 1rem;
}

.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.sidebar-links li a {
  display: block;
  padding: 0.5rem 0.6rem;
  font-size: 0.85rem;
  color: var(--c-muted);
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
  min-height: 40px;
  display: flex;
  align-items: center;
}

.sidebar-links li a:hover {
  background: var(--c-surface2);
  color: var(--c-white);
  text-shadow: none;
}

.faq-body,
.article-main-content,
.about-body,
.privacy-content-figure {
  padding: 2.5rem 2rem;
  min-width: 0;
}

.page-content {
  max-width: 720px;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-text);
}

.page-content h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--c-white);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  border-left: 3px solid var(--c-accent);
  padding-left: 0.75rem;
}

.page-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-white);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

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

.page-content ul,
.page-content ol {
  padding-left: 1.4rem;
  margin-bottom: 1rem;
}

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

.page-content strong {
  color: var(--c-white);
  font-weight: 600;
}

.page-content em {
  color: var(--c-accent);
  font-style: normal;
}

.page-content blockquote {
  border-left: 3px solid var(--c-accent);
  padding: 0.75rem 1rem;
  margin: 1.5rem 0;
  background: var(--c-surface2);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--c-muted);
}

.page-content a {
  color: var(--c-accent2);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-content a:hover {
  color: var(--c-white);
  text-shadow: 0 0 8px var(--c-neon2);
}

/* =====================
   子文章列表
   ===================== */
.child-articles {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--c-border);
}

.child-articles h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: 1rem;
}

/* =====================
   文章 Hero 图
   ===================== */
.article-hero-figure {
  margin-top: 1rem;
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 540px;
}

.article-hero-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: brightness(0.85);
  border-radius: var(--radius);
}

/* =====================
   文章正文 figure
   ===================== */
.article-content-figure {
  margin: 0;
}

/* =====================
   相关文章
   ===================== */
.related-articles-aside {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--c-border);
}

.related-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: 1rem;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
}

.related-card {
  display: block;
}

.related-card a {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  color: inherit;
  text-decoration: none;
  height: 100%;
}

.related-card a:hover {
  text-shadow: none;
}

.related-card a:hover .related-card-title {
  color: var(--c-accent);
  text-shadow: 0 0 8px var(--c-neon);
}

.related-card-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-white);
  transition: color var(--transition);
  display: block;
}

.related-card-desc {
  font-size: 0.8rem;
  color: var(--c-muted);
  display: block;
  line-height: 1.5;
}

/* =====================
   文章侧栏日期
   ===================== */
.meta-date-block {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.meta-label {
  font-size: 0.7rem;
  color: var(--c-muted);
  letter-spacing: 0.08em;
}

.meta-date-block time {
  font-size: 0.8rem;
  color: var(--c-accent);
  font-weight: 500;
}

/* =====================
   隐私页
   ===================== */
.privacy-date {
  font-size: 0.85rem;
  color: var(--c-muted);
  margin-bottom: 0.5rem;
}

.privacy-date time {
  color: var(--c-accent);
}

.privacy-content {
  max-width: 680px;
}

/* =====================
   页脚
   ===================== */
.site-footer {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  margin-top: 4rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
  padding: 3rem 2rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.footer-brand-big {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--c-white);
  line-height: 1.1;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--c-muted);
  line-height: 1.55;
}

.footer-nav ul,
.footer-extra-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.footer-nav a,
.footer-extra-col a {
  display: flex;
  align-items: center;
  min-height: 40px;
  font-size: 0.87rem;
  color: var(--c-muted);
  transition: color var(--transition);
  padding: 0.2rem 0;
}

.footer-nav a:hover,
.footer-extra-col a:hover {
  color: var(--c-white);
  text-shadow: none;
}

.footer-bottom {
  border-top: 1px solid var(--c-border);
  padding: 1rem 2rem;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--c-muted);
}

/* =====================
   small 眉题（h2 前紧邻）
   ===================== */
small + h2,
small + h3 {
  margin-top: 0.3rem;
}

small.eyebrow-label,
small.sidebar-label,
small.hero-eyebrow,
small.section-eyebrow {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 0.4rem;
}

/* =====================
   动效：prefers-reduced-motion 守护
   ===================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .glass-card:hover {
    transform: none;
  }
  .btn-primary:hover {
    transform: none;
  }
}

/* 微交互 */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.glass-card {
  animation: fadeUp 0.45s ease both;
}

.faq-cards-grid .glass-card:nth-child(1) { animation-delay: 0.05s; }
.faq-cards-grid .glass-card:nth-child(2) { animation-delay: 0.10s; }
.faq-cards-grid .glass-card:nth-child(3) { animation-delay: 0.15s; }
.faq-cards-grid .glass-card:nth-child(4) { animation-delay: 0.20s; }

/* =====================
   响应式断点
   ===================== */
@media (max-width: 900px) {
  .hero-section {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    padding: 2rem 1.25rem;
  }
  .hero-aside { display: none; }
  .hero-content { text-align: left; }
  .hero-images {
    width: 100%;
    height: 200px;
    position: relative;
    margin-top: 1.5rem;
  }
  .hero-img {
    width: 48%;
    height: 180px;
  }
  .hero-img-2 {
    right: 0;
    bottom: 0;
  }

  .faq-index-section,
  .articles-section,
  .content-section {
    grid-template-columns: 1fr;
  }
  .section-aside { display: none; }

  .faq-content-section,
  .article-body-section,
  .about-content-section,
  .privacy-body-section {
    grid-template-columns: 1fr;
  }

  .faq-sidebar,
  .article-sidebar,
  .about-sidebar,
  .privacy-sidebar {
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--c-border);
    padding: 1.5rem 1.25rem;
  }

  .faq-body,
  .article-main-content,
  .about-body,
  .privacy-content-figure {
    padding: 1.5rem 1.25rem;
  }

  .page-hero-section,
  .faq-hero,
  .about-hero-section,
  .privacy-hero-section,
  .article-header-section {
    grid-template-columns: 1fr;
    padding: 2rem 1.25rem 1.5rem;
  }
  .page-hero-aside,
  .about-aside,
  .privacy-aside,
  .article-meta-aside {
    flex-direction: row;
    align-items: center;
    gap: 1rem;
  }
  .page-hero-bg,
  .about-bg-text,
  .privacy-bg-text,
  .article-bg-num {
    writing-mode: horizontal-tb;
    font-size: 2rem;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    padding: 2rem 1.25rem 1.5rem;
  }
  .footer-brand-col {
    grid-column: 1 / -1;
  }
}

@media (max-width: 600px) {
  .header-brand-row {
    padding: 0.75rem 1rem;
  }
  .header-nav-row {
    padding: 0.4rem 1rem;
  }
  .nav-menu {
    gap: 0.3rem;
  }
  .nav-pill {
    font-size: 0.78rem;
    padding: 0.4rem 0.75rem;
    min-height: 40px;
  }
  .nav-summary {
    display: block;
  }
  .nav-details:not([open]) .nav-menu {
    display: none;
  }

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

  .articles-table {
    font-size: 0.82rem;
  }
  .tbl-desc { display: none; }
  .ci-desc { display: none; }

  .footer-inner {
    grid-template-columns: 1fr;
    padding: 1.5rem 1rem 1rem;
  }

  .footer-bottom {
    padding: 0.75rem 1rem;
  }

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

  .page-content h2 {
    font-size: 1.15rem;
  }

  .faq-index-section,
  .articles-section,
  .content-section {
    padding: 2rem 1rem;
  }

  .child-table .ci-desc { display: none; }
}

@media (max-width: 375px) {
  body { font-size: 15px; }
  .hero-h1 { font-size: 1.55rem; }
  .page-h1 { font-size: 1.4rem; }
}

/* =====================
   视差滚动效果
   ===================== */
.hero-images {
  transition: transform 0.1s linear;
  will-change: transform;
}

/* =====================
   高对比度焦点样式
   ===================== */
:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
}

/* =====================
   滚动条美化
   ===================== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--c-surface);
}
::-webkit-scrollbar-thumb {
  background: var(--c-surface3);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--c-muted);
}