/* ============================================
   半岛体育CN — 全站共享样式
   ============================================ */
:root {
  --color-bg:            #0A1628;
  --color-bg-secondary:  #142B3C;
  --color-gold:          #D4AF37;
  --color-blue:          #00D4FF;
  --color-wine:          #6B1D2A;
  --color-indigo:        #3B2B5C;
  --color-text:          #E8E6E3;
  --color-text-secondary:#9AA5B1;
  --font-heading: 'Noto Serif SC', Georgia, serif;
  --font-body: 'Noto Sans SC', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  --header-height: 72px;
  --container-max: 1320px;
  --gold-soft: rgba(212, 175, 55, 0.28);
  --blue-soft: rgba(0, 212, 255, 0.22);
  --line-light: rgba(255, 255, 255, 0.1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--color-text);
  background: var(--color-bg);
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(0, 212, 255, 0.35);
  transition: color 0.2s, text-decoration-color 0.2s;
}

a:hover {
  color: var(--color-gold);
  text-decoration-color: rgba(212, 175, 55, 0.6);
}

button {
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.35;
}

mark {
  background: rgba(0, 212, 255, 0.3);
  color: var(--color-text);
  padding: 2px 0;
  border-bottom: 1px solid var(--color-blue);
}

#main-content {
  flex: 1 0 auto;
}

/* ---------- 工具类 ---------- */
.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;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

@media (max-width: 640px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* ---------- 正文容器 ---------- */
.prose {
  max-width: 720px;
}

.prose p {
  margin-bottom: 1.2em;
  color: var(--color-text-secondary);
}

.prose strong {
  color: var(--color-text);
  font-weight: 600;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 12px 28px;
  border: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  text-decoration: none;
  background: transparent;
  color: var(--color-text);
  transition: background 0.25s, border-color 0.25s, color 0.25s;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-bg);
}

.btn--primary:hover {
  background: transparent;
  color: var(--color-gold);
  border-color: var(--color-gold);
}

.btn--outline {
  border-color: rgba(212, 175, 55, 0.5);
  color: var(--color-gold);
}

.btn--outline:hover {
  background: rgba(212, 175, 55, 0.1);
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.btn--blue {
  border-color: rgba(0, 212, 255, 0.45);
  color: var(--color-blue);
}

.btn--blue:hover {
  background: rgba(0, 212, 255, 0.08);
  border-color: var(--color-blue);
  color: var(--color-blue);
}

/* ---------- 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 24px 0 40px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.breadcrumbs a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--color-blue);
}

.breadcrumbs__sep {
  color: rgba(212, 175, 55, 0.55);
  font-family: var(--font-mono);
}

.breadcrumbs__current {
  color: var(--color-gold);
}

/* ---------- 章节组件 ---------- */
.section {
  padding: 64px 0;
}

.section--narrow {
  padding: 40px 0;
}

.section__head {
  position: relative;
  margin-bottom: 36px;
  padding-left: 22px;
  border-left: 3px solid var(--color-gold);
}

.section__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.28em;
  color: var(--color-gold);
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.3;
}

.section__note {
  font-size: 14px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin-top: 8px;
}

/* ---------- 页面内页头 ---------- */
.page-header {
  position: relative;
  border: 1px solid rgba(212, 175, 55, 0.24);
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.07), rgba(0, 212, 255, 0.03) 50%, transparent);
  padding: 40px 40px 36px;
  margin: 40px 0 48px;
}

.page-header::before,
.page-header::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--color-gold);
  border-style: solid;
  pointer-events: none;
}

.page-header::before {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
}

.page-header::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
}

.page-header__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--color-gold);
  display: block;
  margin-bottom: 8px;
}

.page-header__title {
  font-family: var(--font-heading);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  color: var(--color-text);
  line-height: 1.25;
}

.page-header__desc {
  margin-top: 10px;
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 640px;
}

@media (max-width: 640px) {
  .page-header {
    padding: 28px 20px 24px;
    margin: 24px 0 32px;
  }
}

/* ---------- 框架角饰 ---------- */
.frame {
  position: relative;
  border: 1px solid rgba(212, 175, 55, 0.22);
  background: var(--color-bg-secondary);
  padding: 24px;
}

.frame::before,
.frame::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-color: var(--color-gold);
  border-style: solid;
  pointer-events: none;
}

.frame::before {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
}

.frame::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
}

/* ---------- 图片占位容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  background: var(--color-bg-secondary);
  border: 1px solid rgba(212, 175, 55, 0.18);
}

.media-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(0, 212, 255, 0.06);
  pointer-events: none;
}

.media-frame--ratio16x9 { aspect-ratio: 16 / 9; }
.media-frame--ratio4x3  { aspect-ratio: 4 / 3; }
.media-frame--ratio1x1  { aspect-ratio: 1 / 1; }

/* ---------- 标签、分隔线 ---------- */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  padding: 4px 10px;
  border: 1px solid rgba(212, 175, 55, 0.35);
  color: var(--color-gold);
  background: rgba(212, 175, 55, 0.06);
  text-transform: uppercase;
}

.tag--blue {
  border-color: rgba(0, 212, 255, 0.35);
  color: var(--color-blue);
  background: rgba(0, 212, 255, 0.05);
}

.divider {
  border: 0;
  border-top: 1px solid rgba(212, 175, 55, 0.18);
  margin: 48px 0;
}

/* ============================================
   页头
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 22, 40, 0.97);
  border-bottom: 1px solid rgba(0, 212, 255, 0.13);
  box-shadow: 0 1px 16px rgba(0, 0, 0, 0.45);
}

.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-blue) 55%, rgba(0, 212, 255, 0.1) 100%);
}

.site-header::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 4px;
  pointer-events: none;
  background: repeating-linear-gradient(to right,
    rgba(212, 175, 55, 0.3) 0px,
    rgba(212, 175, 55, 0.3) 1px,
    transparent 1px,
    transparent 12px);
}

/* 跳跃链接 */
.site-header__skip {
  position: fixed;
  top: -200px;
  left: 16px;
  z-index: 1000;
  display: inline-block;
  background: var(--color-gold);
  color: var(--color-bg);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  padding: 12px 20px;
  text-decoration: none;
  border-radius: 0;
  transition: top 0.2s ease;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.site-header__skip:focus,
.site-header__skip:focus-visible {
  top: 12px;
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

/* 进度条 */
.site-header__progress {
  position: absolute;
  top: 2px;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-gold), var(--color-blue));
  z-index: 2;
  pointer-events: none;
  transition: width 0.1s linear;
}

/* 页头内行 */
.site-header__main {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-height);
  padding-top: 12px;
  padding-bottom: 12px;
}

/* 品牌 */
.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.site-brand:hover {
  color: var(--color-text);
}

.site-brand__mark {
  position: relative;
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border: 2px solid var(--color-gold);
  background: rgba(0, 212, 255, 0.05);
  display: block;
}

.site-brand__mark-line {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 26px;
  height: 2px;
  background: var(--color-gold);
  transform: translate(-50%, -50%) rotate(45deg);
  z-index: 1;
}

.site-brand__mark-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  background: var(--color-blue);
  transform: translate(-50%, -50%);
  z-index: 2;
}

.site-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.site-brand__name {
  font-family: var(--font-heading);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.site-brand__tagline {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--color-gold);
  font-style: normal;
  margin-top: 2px;
}

/* 主导航 */
.site-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 99;
  background: rgba(10, 22, 40, 0.98);
  border-top: 1px solid rgba(212, 175, 55, 0.14);
  border-bottom: 1px solid rgba(212, 175, 55, 0.14);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
  visibility: hidden;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.28s ease, transform 0.28s ease, visibility 0.28s;
}

.site-nav[data-open] {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  padding: 8px 0;
}

.site-nav__item {
  border-left: 3px solid transparent;
}

.site-nav__item:hover,
.site-nav__item:focus-within {
  border-left-color: var(--color-gold);
}

.site-nav__link {
  display: block;
  padding: 13px 24px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.06em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.site-nav__link:hover {
  color: var(--color-blue);
  background: rgba(0, 212, 255, 0.04);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-gold);
  background: rgba(212, 175, 55, 0.05);
}

/* 页头操作 */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* 检索开关 */
.site-search-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.08em;
  padding: 9px 14px;
  cursor: pointer;
  border-radius: 0;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.site-search-toggle:hover {
  border-color: var(--color-blue);
  color: var(--color-blue);
  background: rgba(0, 212, 255, 0.05);
}

.site-search-toggle__icon {
  position: relative;
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  flex-shrink: 0;
}

.site-search-toggle__icon::after {
  content: '';
  position: absolute;
  width: 6px;
  height: 1.5px;
  background: currentColor;
  right: -4px;
  bottom: -2px;
  transform: rotate(45deg);
}

/* 汉堡按钮 */
.site-nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0;
  padding: 8px;
  cursor: pointer;
  color: var(--color-text);
  transition: border-color 0.2s;
}

.site-nav-toggle:hover {
  border-color: var(--color-gold);
}

.site-nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* 检索面板 */
.site-header__search {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 98;
  background: rgba(10, 22, 40, 0.98);
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
  padding: 20px 0;
  visibility: hidden;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.28s ease, transform 0.28s ease, visibility 0.28s;
}

.site-header__search[data-open] {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.site-search {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 12px;
  align-items: center;
}

.site-search__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--color-gold);
  white-space: nowrap;
}

.site-search__input {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text);
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 0;
  padding: 11px 16px;
  width: 100%;
}

.site-search__input:focus {
  outline: none;
  border-color: var(--color-gold);
}

.site-search__input::placeholder {
  color: rgba(154, 165, 177, 0.65);
}

.site-search__submit {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  background: var(--color-gold);
  color: var(--color-bg);
  border: 1px solid var(--color-gold);
  padding: 11px 24px;
  cursor: pointer;
  border-radius: 0;
  transition: background 0.2s, color 0.2s;
}

.site-search__submit:hover {
  background: transparent;
  color: var(--color-gold);
}

.site-search__status {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-blue);
  letter-spacing: 0.06em;
  min-width: 0;
}

@media (max-width: 640px) {
  .site-search {
    grid-template-columns: 1fr auto;
  }

  .site-search__label {
    grid-column: 1 / -1;
  }

  .site-search__status {
    grid-column: 1 / -1;
  }
}

/* ============================================
   页脚
   ============================================ */
.site-footer {
  position: relative;
  margin-top: 64px;
  background: rgba(10, 22, 40, 0.98);
  border-top: 1px solid rgba(0, 212, 255, 0.12);
}

.site-footer::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  pointer-events: none;
  background: repeating-linear-gradient(to right,
    rgba(0, 212, 255, 0.22) 0px,
    rgba(0, 212, 255, 0.22) 1px,
    transparent 1px,
    transparent 12px);
}

.site-footer__accent {
  position: absolute;
  top: -1px;
  left: 0;
  height: 3px;
  width: 200px;
  background: linear-gradient(90deg, var(--color-gold), rgba(212, 175, 55, 0.1));
}

.site-footer__main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding: 56px 0 40px;
}

.site-footer__block--brand {
  max-width: 340px;
}

.site-brand--footer .site-brand__mark {
  width: 34px;
  height: 34px;
}

.site-brand--footer .site-brand__mark-line {
  width: 22px;
}

.site-brand--footer .site-brand__mark-dot {
  width: 8px;
  height: 8px;
}

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

.site-brand--footer .site-brand__tagline {
  font-size: 9px;
}

.site-footer__desc {
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

.site-footer__title {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-bottom: 18px;
  padding-top: 8px;
}

.site-footer__links li {
  margin-bottom: 10px;
}

.site-footer__links a {
  font-size: 14px;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s, padding-left 0.2s;
}

.site-footer__links a:hover {
  color: var(--color-blue);
  padding-left: 4px;
}

.site-footer__contact li {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 8px;
  word-break: break-all;
}

.site-footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0 28px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.site-footer__meta p {
  margin: 0;
}

.site-footer__copyright {
  font-size: 13px;
}

.site-footer__icp {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(154, 165, 177, 0.75);
}

.site-footer__trust {
  width: 100%;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(154, 165, 177, 0.6);
  border-left: 2px solid rgba(212, 175, 55, 0.25);
  padding-left: 12px;
}

/* ============================================
   可展开内容组
   ============================================ */
[data-collapse-target] {
  display: none;
}

[data-collapse-target][data-open] {
  display: block;
}

/* ============================================
   响应式
   ============================================ */
@media (min-width: 961px) {
  .site-nav {
    position: static;
    visibility: visible;
    opacity: 1;
    transform: none;
    transition: none;
    background: transparent;
    border: 0;
    box-shadow: none;
    z-index: auto;
    overflow: visible;
  }

  .site-nav__list {
    flex-direction: row;
    align-items: center;
    padding: 0;
  }

  .site-nav__item {
    border-left: 0;
  }

  .site-nav__item + .site-nav__item {
    border-left: 1px solid rgba(255, 255, 255, 0.11);
  }

  .site-nav__item:hover,
  .site-nav__item:focus-within {
    border-left-color: transparent;
  }

  .site-nav__link {
    padding: 9px 16px;
    font-size: 14px;
    border-bottom: 0;
    position: relative;
  }

  .site-nav__link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--color-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.22s ease;
  }

  .site-nav__link:hover::after,
  .site-nav__link[aria-current="page"]::after {
    transform: scaleX(1);
  }

  .site-nav__link:hover {
    color: var(--color-gold);
    background: transparent;
  }

  .site-nav__link[aria-current="page"] {
    color: var(--color-gold);
    background: transparent;
  }

  .site-nav-toggle {
    display: none;
  }
}

@media (max-width: 960px) {
  .site-brand__name {
    font-size: 17px;
  }

  .site-footer__main {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 64px;
  }

  .site-header__main {
    gap: 12px;
  }

  .site-brand__mark {
    width: 32px;
    height: 32px;
  }

  .site-brand__mark-line {
    width: 20px;
    height: 1.5px;
  }

  .site-brand__mark-dot {
    width: 8px;
    height: 8px;
  }

  .site-brand__name {
    font-size: 15px;
  }

  .site-brand__tagline {
    font-size: 9px;
  }

  .site-search-toggle__text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .site-search-toggle {
    padding: 9px 11px;
  }

  .site-nav-toggle {
    width: 40px;
    height: 40px;
  }

  .site-footer__main {
    grid-template-columns: 1fr;
    padding: 40px 0 24px;
    gap: 28px;
  }

  .site-footer__title {
    margin-bottom: 12px;
  }

  .site-footer__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding-bottom: 24px;
  }

  .section {
    padding: 44px 0;
  }
}

/* ============================================
   焦点与减少动效
   ============================================ */
:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}