/* ==============================
   玩球体育APP · 全站共享样式
   文件位置 /assets/site.css
   ============================== */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  min-height: 100vh;
  font-family: 'Source Sans Pro', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--txt-body);
  background-color: var(--bg-00);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.nav-locked {
  overflow: hidden;
}

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

i {
  font-style: normal;
}

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
}

button {
  cursor: pointer;
}

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

::selection {
  background: rgba(0, 230, 118, 0.25);
  color: #ffffff;
}

/* ---------- 设计变量 ---------- */
:root {
  --bg-00: #0A0E17;
  --bg-01: #121826;
  --bg-02: #1A2233;
  --accent-green: #00E676;
  --accent-blue: #00B0FF;
  --accent-orange: #FF6D00;
  --txt-strong: #FFFFFF;
  --txt-body: #C2C8D0;
  --txt-mute: #7A8291;
  --txt-danger: #FF3B30;
  --border-thin: rgba(255, 255, 255, 0.08);
  --border-blue: rgba(0, 176, 255, 0.35);
  --shadow-soft: 0 4px 14px rgba(0, 0, 0, 0.22);
  --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.38);
  --header-h: 72px;
  --content-max: 1280px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 64px;
  --space-xl: 120px;
  --font-display: Impact, 'Archivo Black', 'Noto Sans SC', 'Arial Black', sans-serif;
  --font-body: 'Source Sans Pro', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --radius: 2px;
  --grid-gutter: 24px;
}

/* ---------- 主内容与布局 ---------- */
.main-content {
  position: relative;
  padding-top: var(--header-h);
  min-height: calc(100vh - var(--header-h));
}

.container {
  width: min(var(--content-max), calc(100% - 48px));
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: var(--space-lg);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--grid-gutter);
}

/* ---------- 章节标题体系 ---------- */
.section-heading {
  display: flex;
  align-items: baseline;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.section-number {
  font-family: var(--font-display);
  font-size: clamp(52px, 8vw, 108px);
  line-height: 0.8;
  letter-spacing: -2px;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--accent-green);
  opacity: 0.45;
  user-select: none;
  flex-shrink: 0;
}

.section-heading.c-blue .section-number {
  -webkit-text-stroke-color: var(--accent-blue);
}

.section-titles {
  flex: 1;
  min-width: 200px;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.05;
  color: var(--txt-strong);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.section-subtitle {
  margin-top: 6px;
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--txt-mute);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 46px;
  padding: 0 24px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border-radius: var(--radius);
  white-space: nowrap;
  user-select: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.btn-primary {
  background: var(--accent-orange);
  color: var(--bg-00);
  box-shadow: 0 4px 18px rgba(255, 109, 0, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: #ff7f24;
  box-shadow: 0 8px 30px rgba(255, 109, 0, 0.45);
}

.btn-ghost {
  background: transparent;
  color: var(--txt-strong);
  border: 1px solid var(--border-blue);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  box-shadow: 0 6px 20px rgba(0, 176, 255, 0.15);
}

.btn-arrow {
  display: inline-block;
  font-size: 16px;
  line-height: 1;
  transition: transform 0.25s ease;
}

.btn:hover .btn-arrow {
  transform: translate(2px, -2px);
}

.btn-sm {
  height: 34px;
  padding: 0 14px;
  font-size: 13px;
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 26px;
  padding: 0 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--accent-green);
  background: rgba(0, 230, 118, 0.08);
  border: 1px solid rgba(0, 230, 118, 0.25);
  border-radius: 99px;
  text-transform: uppercase;
}

.tag-blue {
  color: var(--accent-blue);
  background: rgba(0, 176, 255, 0.08);
  border-color: rgba(0, 176, 255, 0.25);
}

.tag-orange {
  color: var(--accent-orange);
  background: rgba(255, 109, 0, 0.10);
  border-color: rgba(255, 109, 0, 0.25);
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--bg-01);
  border: 1px solid var(--border-thin);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s ease, border-color 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: rgba(0, 176, 255, 0.3);
}

.card-body {
  padding: 24px;
}

.card-heading {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
  color: var(--txt-strong);
  margin-bottom: 10px;
}

.card-text {
  font-size: 14px;
  color: var(--txt-body);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--txt-mute);
  letter-spacing: 0.5px;
}

.breadcrumb a {
  color: var(--txt-body);
  transition: color 0.2s ease;
}

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

.crumb-sep {
  color: var(--txt-mute);
  opacity: 0.5;
}

.crumb-current {
  color: var(--accent-green);
  font-weight: 600;
}

/* ---------- 内页导语 ---------- */
.page-hero {
  padding: calc(var(--header-h) + 56px) 24px 56px;
  border-bottom: 1px solid var(--border-thin);
  background:
    radial-gradient(circle at 88% 18%, rgba(0, 230, 118, 0.08), transparent 40%),
    radial-gradient(circle at 12% 100%, rgba(0, 176, 255, 0.10), transparent 45%),
    linear-gradient(135deg, #0f1522 0%, var(--bg-00) 55%, var(--bg-01) 100%);
}

.page-hero-inner {
  max-width: var(--content-max);
  margin-inline: auto;
}

.page-hero .breadcrumb {
  margin-bottom: 28px;
}

.page-hero-title {
  position: relative;
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(40px, 6vw, 70px);
  line-height: 1.02;
  letter-spacing: 2px;
  color: var(--txt-strong);
}

.page-hero-title::after {
  content: "";
  position: absolute;
  right: -34px;
  bottom: 12px;
  width: 26px;
  height: 2px;
  background: var(--accent-green);
  transform: rotate(-30deg);
  box-shadow: 0 0 10px rgba(0, 230, 118, 0.5);
}

.page-hero-subtitle {
  margin-top: 14px;
  max-width: 680px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--txt-body);
}

/* ---------- 图片容器 ---------- */
.image-placeholder {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background:
    linear-gradient(140deg, transparent 0%, rgba(0, 176, 255, 0.05) 45%, transparent 60%),
    var(--bg-02);
  border: 1px solid var(--border-thin);
  border-radius: var(--radius);
}

.image-placeholder.is-card {
  aspect-ratio: 4 / 3;
}

.image-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.image-placeholder:hover img {
  transform: scale(1.04);
}

/* ---------- 长文排版 ---------- */
.body-copy {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--txt-body);
}

.body-copy p {
  margin-bottom: 1.1em;
}

.body-copy h2,
.body-copy h3 {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--txt-strong);
  margin-top: 1.5em;
  margin-bottom: 0.6em;
}

.body-copy h2 {
  font-size: 28px;
}

.body-copy h3 {
  font-size: 22px;
}

.body-copy strong {
  color: var(--txt-strong);
}

.body-copy ul {
  margin: 1em 0;
}

.body-copy ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
}

.body-copy ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  background: var(--accent-green);
  clip-path: polygon(0 0, 100% 30%, 80% 100%, 0 70%);
}

/* ---------- 装饰 ---------- */
.hud-corners {
  position: relative;
}

.hud-corners::before,
.hud-corners::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  pointer-events: none;
  z-index: 2;
}

.hud-corners::before {
  top: -8px;
  left: -8px;
  border-top: 2px solid var(--accent-blue);
  border-left: 2px solid var(--accent-blue);
}

.hud-corners::after {
  bottom: -8px;
  right: -8px;
  border-bottom: 2px solid var(--accent-green);
  border-right: 2px solid var(--accent-green);
}

.diagonal-slice {
  display: block;
  width: 48px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  transform: rotate(-35deg);
  transform-origin: left center;
  margin: 20px 0 8px;
  border-radius: 2px;
  box-shadow: 0 0 12px rgba(0, 230, 118, 0.4);
}

/* ---------- 工具类 ---------- */
.text-muted { color: var(--txt-mute); }
.text-accent { color: var(--accent-green); }
.text-danger { color: var(--txt-danger); }
.text-center { text-align: center; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }

.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;
}

/* ---------- 滚动显现（html.js 启用） ---------- */
html.js [data-reveal]:not([data-reveal="visible"]) {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

html.js [data-reveal="visible"] {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: -48px;
  left: 16px;
  z-index: 2000;
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 700;
  color: var(--bg-00);
  background: var(--accent-blue);
  border-radius: 0 0 4px 4px;
  transition: top 0.25s ease;
}

.skip-link:focus {
  top: 0;
  outline: none;
  box-shadow: 0 4px 20px rgba(0, 176, 255, 0.45);
}

/* ---------- 头部框架 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  height: var(--header-h);
  background: rgba(10, 14, 23, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-blue);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue) 70%, transparent);
  opacity: 0.85;
  pointer-events: none;
}

.header-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  box-shadow: 0 0 10px rgba(0, 230, 118, 0.5);
  pointer-events: none;
  z-index: 5;
}

.header-shell {
  position: relative;
  height: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: 24px;
}

.header-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 100%;
}

/* 品牌标识 */
.header-brand {
  flex-shrink: 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
}

.mark-dot {
  display: block;
  width: 18px;
  height: 24px;
  background: var(--accent-green);
  clip-path: polygon(0 0, 100% 30%, 80% 100%, 10% 80%);
  opacity: 0.92;
}

.mark-slash {
  position: absolute;
  right: 1px;
  display: block;
  width: 2px;
  height: 30px;
  background: var(--accent-blue);
  transform: rotate(24deg);
  border-radius: 1px;
  box-shadow: 0 0 8px rgba(0, 176, 255, 0.5);
}

.brand-line {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-cn {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 21px;
  letter-spacing: 2px;
  color: var(--txt-strong);
}

.brand-en {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent-blue);
}

/* 主导航 */
.header-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: var(--header-h);
  padding-inline: 17px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--txt-body);
  white-space: nowrap;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 14px;
  height: 2px;
  background: var(--accent-blue);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.28s cubic-bezier(0.65, 0, 0.35, 1);
}

.nav-link:hover {
  color: var(--txt-strong);
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-link[aria-current="page"] {
  color: var(--accent-blue);
  text-shadow: 0 0 24px rgba(0, 176, 255, 0.35);
}

.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--accent-blue);
}

/* 头部操作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn-download {
  height: 38px;
  font-size: 13px;
  padding-inline: 16px;
  gap: 8px;
}

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 42px;
  height: 42px;
  gap: 5px;
  border-radius: var(--radius);
}

.toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--txt-strong);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] .toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

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

/* ---------- 响应式：平板与移动端头部 ---------- */
@media (max-width: 1023.98px) {
  :root {
    --header-h: 64px;
  }

  .header-topline {
    gap: 8px;
  }

  .brand-cn {
    font-size: 19px;
  }

  .brand-en {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .header-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    background: rgba(10, 14, 23, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid rgba(0, 176, 255, 0.2);
    border-bottom: 1px solid rgba(0, 176, 255, 0.2);
    box-shadow: 0 24px 40px rgba(0, 0, 0, 0.5);
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.25s ease;
  }

  .header-nav[data-open] {
    max-height: min(60vh, 520px);
    opacity: 1;
    overflow-y: auto;
  }

  .header-nav .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 20px;
  }

  .header-nav .nav-item {
    width: 100%;
  }

  .header-nav .nav-link {
    height: auto;
    width: 100%;
    padding: 14px 12px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .header-nav .nav-link::after {
    display: none;
  }

  .header-nav .nav-link:hover {
    background: rgba(26, 34, 51, 0.5);
  }

  .header-nav .nav-link[aria-current="page"] {
    color: var(--accent-blue);
    background: linear-gradient(90deg, rgba(0, 176, 255, 0.08), transparent 70%);
    text-shadow: none;
  }
}

@media (max-width: 479.98px) {
  .header-shell {
    padding-inline: 14px;
  }

  .brand-mark {
    width: 30px;
  }

  .brand-cn {
    font-size: 17px;
    letter-spacing: 1px;
  }

  .btn-download {
    padding-inline: 12px;
    gap: 6px;
  }

  .btn-download .btn-arrow {
    font-size: 13px;
  }
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 10;
  margin-top: var(--space-xl);
  background: linear-gradient(180deg, #0f1522 0%, var(--bg-01) 60%, var(--bg-00) 100%);
  border-top: 1px solid rgba(0, 176, 255, 0.18);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 230, 118, 0.5), rgba(0, 176, 255, 0.5), transparent);
  pointer-events: none;
}

.footer-shell {
  max-width: var(--content-max);
  margin-inline: auto;
  padding: 64px 24px 32px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.6fr;
  gap: 48px;
}

/* 品牌列 */
.footer-brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.footer-brand-logo {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}

.fdot {
  display: block;
  width: 15px;
  height: 20px;
  background: var(--accent-green);
  clip-path: polygon(0 0, 100% 30%, 80% 100%, 10% 80%);
  opacity: 0.85;
}

.fbar {
  position: absolute;
  right: 0;
  display: block;
  width: 2px;
  height: 26px;
  background: var(--accent-blue);
  transform: rotate(24deg);
  border-radius: 1px;
}

.footer-brand-name {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 22px;
  letter-spacing: 2px;
  color: var(--txt-strong);
}

.footer-slogan {
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-green);
}

.footer-trust {
  margin-top: 10px;
  max-width: 46ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--txt-mute);
}

/* 导航列 */
.footer-nav-col {
  min-width: 0;
}

.footer-heading {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-blue);
  border-bottom: 1px solid var(--border-thin);
}

.footer-heading::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  clip-path: polygon(0 0, 100% 30%, 80% 100%, 0 70%);
  opacity: 0.8;
  flex-shrink: 0;
}

.footer-nav-list li {
  margin-bottom: 10px;
}

.footer-nav-list a {
  position: relative;
  display: inline-block;
  font-size: 14px;
  color: var(--txt-body);
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-nav-list a::before {
  content: "→";
  position: absolute;
  top: 2px;
  left: -18px;
  font-size: 12px;
  color: var(--accent-blue);
  opacity: 0;
  transition: left 0.2s ease, opacity 0.2s ease;
}

.footer-nav-list a:hover {
  color: var(--accent-green);
  transform: translateX(6px);
}

.footer-nav-list a:hover::before {
  left: -14px;
  opacity: 1;
}

/* 联系列 */
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--txt-body);
  word-break: break-all;
}

.contact-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: auto;
  min-width: 24px;
  height: 20px;
  margin-top: 1px;
  padding: 0 5px;
  font-size: 10px;
  font-weight: 700;
  color: var(--bg-00);
  background: var(--accent-blue);
  border-radius: 2px;
}

.footer-service {
  margin-top: 16px;
  padding-left: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--txt-mute);
  border-left: 2px solid rgba(0, 230, 118, 0.4);
}

/* 页脚底部条 */
.footer-bottom {
  border-top: 1px solid var(--border-thin);
  padding: 16px 24px;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  max-width: var(--content-max);
  margin-inline: auto;
  font-size: 13px;
  color: var(--txt-mute);
}

.footer-copy {
  font-size: 13px;
}

.footer-icp {
  font-size: 12px;
  letter-spacing: 1px;
  opacity: 0.8;
}

.footer-socials {
  display: flex;
  align-items: center;
  gap: 10px;
}

.social-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  font-size: 12px;
  color: var(--txt-mute);
  border: 1px solid var(--border-thin);
  border-radius: 50%;
  transition: color 0.25s ease, border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.social-badge:hover {
  color: var(--accent-green);
  border-color: rgba(0, 230, 118, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 230, 118, 0.12);
}

/* ---------- 响应式：页脚 ---------- */
@media (max-width: 991.98px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 40px 32px;
  }
}

@media (max-width: 639.98px) {
  .footer-shell {
    padding-block: 40px 24px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom-inner {
    justify-content: center;
    text-align: center;
  }
}

/* ---------- reduced-motion 全局降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .header-progress {
    display: none;
  }

  html.js [data-reveal],
  html.js [data-reveal]:not([data-reveal="visible"]) {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .card,
  .btn,
  .nav-link,
  .nav-link::after {
    transition: none;
  }
}