/* ============================================================
   乐竞体育 · 全站共享基础样式
   /assets/site.css
   版本：2025.1 —— 数据驾驶舱 × 杂志刊头
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root {
  --color-primary-bg: #0b1e3a;
  --color-deep-bg: #081528;
  --color-card-bg: #10264a;
  --color-accent-green: #00e676;
  --color-accent-orange: #ff6d00;
  --color-text-primary: #f0f4ff;
  --color-text-secondary: #a0b0c8;
  --color-border-line: #1e3a5f;
  --color-success: #00c853;
  --color-warning: #ffab00;

  --font-heading: "Oswald", Impact, "Arial Black", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", "SFMono-Regular", Consolas, monospace;

  --container-width: 1120px;
  --header-top-space: 22px;

  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --duration: 0.28s;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  --z-progress: 300;
  --z-skip: 200;
  --z-header: 100;
}

/* ---------- 2. Reset 与基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  background: var(--color-primary-bg);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text-primary);
}

p {
  margin: 0 0 16px;
}

ul,
ol {
  margin: 0;
  padding-left: 1.25em;
}

img,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

button {
  padding: 0;
  border: none;
  background: none;
  font: inherit;
  color: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

a {
  color: var(--color-accent-green);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--duration) var(--ease), text-decoration-color var(--duration) var(--ease);
}

a:hover {
  color: var(--color-text-primary);
  text-decoration-color: transparent;
}

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

::selection {
  background: rgba(0, 230, 118, 0.32);
  color: var(--color-text-primary);
}

#main-content {
  flex: 1 0 auto;
  scroll-margin-top: 100px;
}

section[id] {
  scroll-margin-top: 110px;
}

/* ---------- 3. 容器与工具类 ---------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: 24px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  margin: -1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.text-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.text-secondary {
  color: var(--color-text-secondary);
}

.text-green {
  color: var(--color-accent-green);
}

.text-orange {
  color: var(--color-accent-orange);
}

.text-strong {
  color: var(--color-text-primary);
  font-weight: 700;
}

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: var(--z-skip);
  padding: 10px 18px;
  background: var(--color-accent-green);
  color: #001a0e;
  font-weight: 700;
  font-size: 14px;
  line-height: 1.4;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transform: translateY(calc(-100% - 24px));
  transition: transform var(--duration) var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
  color: #001a0e;
}

/* ---------- 5. 顶部滚动进度条 ---------- */
.site-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: var(--z-progress);
  pointer-events: none;
  background: rgba(30, 58, 95, 0.4);
}

.site-progress__bar {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent-green) 0%, var(--color-accent-orange) 100%);
}

/* ---------- 6. 头部（桌面基准） ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(11, 30, 58, 0.96);
  border-bottom: 1px solid var(--color-border-line);
}

.site-header__inner {
  max-width: var(--container-width);
  margin-inline: auto;
  padding: var(--header-top-space) 24px 14px;
}

.site-header__top {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-masthead {
  margin: 0;
  text-align: center;
}

.site-masthead__link {
  display: inline-block;
  text-decoration: none;
  color: inherit;
}

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

.site-masthead__name {
  display: block;
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.06em;
  color: var(--color-text-primary);
}

.site-masthead__tag {
  display: inline-block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--color-accent-green);
  text-transform: uppercase;
}

.site-masthead__tag::before {
  content: "●";
  display: inline-block;
  margin-right: 6px;
  font-size: 7px;
  color: var(--color-accent-orange);
  vertical-align: middle;
}

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

.site-nav {
  position: static;
  margin-top: 14px;
}

.site-nav__brand {
  display: none;
}

.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: nowrap;
}

.site-nav__item {
  display: flex;
  align-items: center;
  white-space: nowrap;
}

.site-nav__item + .site-nav__item::before {
  content: "·";
  margin: 0 18px;
  color: var(--color-text-secondary);
  font-size: 13px;
}

.site-nav__link {
  display: block;
  padding: 6px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  color: var(--color-text-primary);
  border-bottom-color: var(--color-accent-green);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-text-primary);
  border-bottom-color: var(--color-accent-orange);
}

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

/* ---------- 7. 移动端头部与抽屉（≤860px） ---------- */
@media (max-width: 860px) {
  .site-header__inner {
    padding: 16px 20px 14px;
  }

  .site-header__top {
    min-height: 48px;
    justify-content: center;
  }

  .site-masthead__name {
    font-size: 24px;
    letter-spacing: 0.04em;
  }

  .site-masthead__tag {
    font-size: 10.5px;
    letter-spacing: 0.1em;
  }

  @media (max-width: 480px) {
    .site-masthead__name {
      font-size: 20px;
      letter-spacing: 0.02em;
    }

    .site-masthead__tag {
      font-size: 10px;
      letter-spacing: 0.08em;
    }
  }

  .site-nav-toggle {
    position: absolute;
    top: 50%;
    right: 0;
    z-index: 30;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-border-line);
    border-radius: var(--radius-sm);
    background: var(--color-card-bg);
    transition: border-color var(--duration) var(--ease);
  }

  .site-nav-toggle:hover,
  .site-nav-toggle:focus-visible {
    border-color: var(--color-accent-green);
  }

  .site-nav-toggle__bar {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-text-primary);
    transition: transform var(--duration) var(--ease), opacity var(--duration) var(--ease);
  }

  .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(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 20;
    width: min(320px, 84vw);
    height: 100vh;
    height: 100dvh;
    margin: 0;
    padding: 64px 24px 32px;
    background: var(--color-deep-bg);
    border-left: 1px solid var(--color-border-line);
    box-shadow: -12px 0 32px rgba(0, 0, 0, 0.4);
    overflow-y: auto;
    transform: translateX(105%);
    visibility: hidden;
    transition: transform calc(var(--duration) + 0.15s) var(--ease), visibility 0s linear calc(var(--duration) + 0.15s);
  }

  .site-nav[data-open="true"],
  .site-nav.is-open {
    transform: translateX(0);
    visibility: visible;
    transition: transform calc(var(--duration) + 0.15s) var(--ease), visibility 0s linear 0s;
  }

  .site-nav__brand {
    display: block;
    margin: 0 0 18px;
    padding-bottom: 14px;
    font-family: var(--font-heading);
    font-size: 19px;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border-line);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .site-nav__item + .site-nav__item::before {
    content: none;
  }

  .site-nav__link {
    padding: 13px 16px;
    font-size: 16px;
    color: var(--color-text-primary);
    border-bottom: none;
    border-left: 2px solid transparent;
  }

  .site-nav__link:hover,
  .site-nav__link:focus-visible {
    background: var(--color-card-bg);
    border-bottom-color: transparent;
    border-left-color: var(--color-accent-green);
  }

  .site-nav__link[aria-current="page"] {
    background: rgba(0, 230, 118, 0.08);
    border-bottom-color: transparent;
    border-left-color: var(--color-accent-orange);
  }

  .site-nav-backdrop {
    position: fixed;
    inset: 0;
    z-index: 10;
    display: block;
    background: rgba(8, 21, 40, 0.62);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration) var(--ease), visibility 0s linear var(--duration);
  }

  .site-nav-backdrop[data-open="true"],
  .site-nav-backdrop.is-open {
    opacity: 1;
    visibility: visible;
    transition: opacity var(--duration) var(--ease), visibility 0s linear 0s;
  }
}

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 56px;
  background: var(--color-deep-bg);
  border-top: 1px solid var(--color-border-line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-green) 0%, var(--color-accent-orange) 100%);
  opacity: 0.65;
}

.site-footer__inner {
  padding-block: 48px 18px;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--color-border-line);
}

.site-footer__logo {
  margin: 0 0 6px;
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-text-primary);
}

.site-footer__slogan {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--color-accent-green);
}

.site-footer__trust {
  margin: 0 0 12px;
  max-width: 360px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.site-footer__icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-secondary);
}

.site-footer__title {
  margin: 0 0 14px;
  padding-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-orange);
  border-bottom: 1px solid var(--color-border-line);
}

.site-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.site-footer__links--cols {
  grid-template-columns: 1fr 1fr;
}

.site-footer__links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--duration) var(--ease);
}

.site-footer__links a:hover,
.site-footer__links a:focus-visible {
  color: var(--color-accent-green);
}

.site-footer__meta li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.site-footer__meta-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-border-line);
}

.site-footer__note {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 18px;
}

.site-footer__copyright {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

.site-footer__legal {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
}

.site-footer__legal li {
  display: flex;
  align-items: center;
  font-size: 13px;
}

.site-footer__legal li + li::before {
  content: "|";
  margin: 0 8px;
  color: var(--color-border-line);
}

.site-footer__legal a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

.site-footer__legal a:hover,
.site-footer__legal a:focus-visible {
  color: var(--color-accent-orange);
}

@media (max-width: 860px) {
  .site-footer {
    margin-top: 40px;
  }

  .site-footer__inner {
    padding-block: 40px 16px;
  }

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

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-footer__links--cols {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- 9. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--duration) var(--ease), border-color var(--duration) var(--ease), color var(--duration) var(--ease), transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent-green);
  outline-offset: 3px;
}

.btn--primary {
  background: var(--color-accent-green);
  color: #001a0e;
}

.btn--primary:hover {
  background: #33f0a0;
  color: #001a0e;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 230, 118, 0.28);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-line);
}

.btn--ghost:hover {
  border-color: var(--color-accent-green);
  color: var(--color-accent-green);
}

.btn--dark {
  background: var(--color-card-bg);
  color: var(--color-text-primary);
  border-color: var(--color-border-line);
}

.btn--dark:hover {
  border-color: var(--color-accent-orange);
  color: var(--color-accent-orange);
}

.btn--block {
  display: flex;
  width: 100%;
}

/* ---------- 10. 标签 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.badge--new {
  background: rgba(255, 109, 0, 0.14);
  border-color: rgba(255, 109, 0, 0.5);
  color: var(--color-accent-orange);
}

.badge--beta {
  background: rgba(255, 171, 0, 0.12);
  border-color: rgba(255, 171, 0, 0.45);
  color: var(--color-warning);
}

.badge--ok {
  background: rgba(0, 230, 118, 0.12);
  border-color: rgba(0, 230, 118, 0.45);
  color: var(--color-accent-green);
}

/* ---------- 11. 卡片 ---------- */
.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border-line);
  border-radius: var(--radius-md);
  padding: 24px;
}

.paper-card {
  position: relative;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border-line);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: 0 12px 0 -4px rgba(8, 21, 40, 0.45), 0 2px 12px rgba(0, 0, 0, 0.2);
}

.paper-card::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(240, 244, 255, 0.09);
  border-radius: calc(var(--radius-md) - 4px);
  pointer-events: none;
}

.paper-card__label {
  position: absolute;
  top: -10px;
  left: 16px;
  padding: 2px 10px;
  background: var(--color-accent-orange);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #ffffff;
  white-space: nowrap;
}

/* ---------- 12. 章节标签与色带 ---------- */
.section-label {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-green);
  font-weight: 500;
}

.section-label::before {
  content: "";
  align-self: center;
  flex: 0 0 26px;
  width: 26px;
  height: 2px;
  background: var(--color-accent-green);
}

.section-label__index {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.section-band {
  position: relative;
  padding-block: 56px;
}

.section-band::before {
  content: attr(data-index);
  position: absolute;
  top: 20px;
  right: 20px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 90px;
  line-height: 1;
  color: rgba(240, 244, 255, 0.05);
  pointer-events: none;
}

/* ---------- 13. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 13px;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  color: var(--color-text-secondary);
}

.breadcrumb__item:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: var(--color-border-line);
}

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

.breadcrumb__link:hover,
.breadcrumb__link:focus-visible {
  color: var(--color-accent-green);
}

.breadcrumb__item[aria-current="page"] {
  color: var(--color-text-primary);
}

/* ---------- 14. 内页首屏 ---------- */
.page-hero {
  position: relative;
  padding: 40px 0 32px;
  border-bottom: 2px solid var(--color-border-line);
}

.page-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -5px;
  border-bottom: 1px solid var(--color-border-line);
}

.page-hero__meta {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--color-accent-green);
}

.page-hero__title {
  margin: 0 0 14px;
  font-family: var(--font-heading);
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.15;
  letter-spacing: 0.02em;
}

.page-hero__lead {
  margin: 0;
  max-width: 640px;
  font-size: 16px;
  color: var(--color-text-secondary);
}

/* ---------- 15. 图片容器 ---------- */
.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--color-border-line);
  border-radius: var(--radius-md);
  background: repeating-linear-gradient(
    45deg,
    var(--color-card-bg),
    var(--color-card-bg) 8px,
    rgba(30, 58, 95, 0.35) 8px,
    rgba(30, 58, 95, 0.35) 9px
  );
}

.img-frame--16-9 {
  aspect-ratio: 16 / 9;
}

.img-frame--4-3 {
  aspect-ratio: 4 / 3;
}

.img-frame--1-1 {
  aspect-ratio: 1 / 1;
}

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

.img-frame__caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-secondary);
}

/* ---------- 16. 数据指标 ---------- */
.stat-value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 36px;
  line-height: 1.15;
  color: var(--color-accent-green);
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
}

/* ---------- 17. 数据表格 ---------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.data-table th,
.data-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-line);
}

.data-table th {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.data-table td {
  color: var(--color-text-primary);
}

.data-table tbody tr:hover {
  background: rgba(16, 38, 74, 0.6);
}

/* ---------- 18. 标签列表 ---------- */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tag-item {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border: 1px solid var(--color-border-line);
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--color-text-secondary);
  text-decoration: none;
  cursor: pointer;
  transition: border-color var(--duration) var(--ease), color var(--duration) var(--ease);
}

.tag-item:hover,
.tag-item:focus-visible {
  border-color: var(--color-accent-green);
  color: var(--color-accent-green);
}

/* ---------- 19. 滚动显现协议 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.32s var(--ease), transform 0.32s var(--ease);
}

[data-reveal="left"] {
  transform: translateX(-22px);
}

[data-reveal="right"] {
  transform: translateX(22px);
}

[data-reveal].is-visible,
[data-reveal="left"].is-visible,
[data-reveal="right"].is-visible {
  opacity: 1;
  transform: none;
}

[data-reveal-stagger] > * {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.32s var(--ease), transform 0.32s var(--ease);
}

[data-reveal-stagger].is-visible > * {
  opacity: 1;
  transform: none;
}

[data-reveal-stagger].is-visible > *:nth-child(2) {
  transition-delay: 60ms;
}

[data-reveal-stagger].is-visible > *:nth-child(3) {
  transition-delay: 120ms;
}

[data-reveal-stagger].is-visible > *:nth-child(4) {
  transition-delay: 180ms;
}

[data-reveal-stagger].is-visible > *:nth-child(5) {
  transition-delay: 240ms;
}

[data-reveal-stagger].is-visible > *:nth-child(6) {
  transition-delay: 300ms;
}

[data-reveal-stagger].is-visible > *:nth-child(7) {
  transition-delay: 360ms;
}

[data-reveal-stagger].is-visible > *:nth-child(8) {
  transition-delay: 420ms;
}

/* ---------- 20. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  [data-reveal],
  [data-reveal-stagger] > * {
    opacity: 1 !important;
    transform: none !important;
  }

  .site-progress {
    display: none;
  }

  .site-nav {
    transition: none !important;
  }

  .site-nav-backdrop {
    transition: none !important;
  }
}