/* =====================================================================
   云体育站 Site Kit - /assets/site.css
   展览画册 × 草原数据流线
   ===================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --clr-green: #00A651;
  --clr-blue: #0072CE;
  --clr-orange: #FF4B2B;
  --clr-deep: #0B3B2E;
  --clr-mist: #E6F0F5;
  --clr-milk: #FAF9F6;
  --clr-pale: #D4E8D0;
  --clr-gold: #F2B705;
  --clr-ink: #1A2A3A;

  --font-head: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Source Serif Pro", "Noto Serif SC", "Songti SC", SimSun, serif;

  --w-page: 1280px;
  --w-narrow: 880px;
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 14px;
  --shadow-1: 0 2px 10px rgba(10, 34, 28, 0.08);
  --shadow-2: 0 14px 36px rgba(10, 34, 28, 0.16);
  --nav-z: 130;
  --toast-z: 150;
  --transition: 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 2rem;
  -webkit-text-size-adjust: 100%;
}

main { display: block; }

body {
  font: 400 1rem/1.75 var(--font-body);
  color: var(--clr-ink);
  background: var(--clr-milk);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.18;
  color: var(--clr-deep);
}

p { text-wrap: pretty; }

a {
  color: var(--clr-blue);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
a:hover { color: var(--clr-green); }

ul, ol { padding-left: 1.2rem; }
img, svg { display: block; max-width: 100%; }

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

strong { font-weight: 800; }
em { font-style: italic; }

::selection { background: var(--clr-green); color: #fff; }

/* ---------- 布局容器 ---------- */
.container {
  width: min(100% - 2.5rem, var(--w-page));
  margin-inline: auto;
}

.wrap {
  width: min(100% - 3rem, var(--w-narrow));
  margin-inline: auto;
}

.grid--2, .grid--3, .grid--4 { display: grid; gap: 1.5rem; }

@media (min-width: 640px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .grid--2-1 { grid-template-columns: 2fr 1fr; }
}

/* ---------- 通用组件：按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.82rem 1.6rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  font: 800 0.95rem/1.2 var(--font-head);
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}
.btn:hover { transform: translateY(-2px); }

.btn--primary { background: var(--clr-green); color: #fff; box-shadow: 0 4px 14px rgba(0, 166, 81, 0.3); }
.btn--primary:hover { background: var(--clr-deep); color: #fff; box-shadow: 0 8px 22px rgba(11, 59, 46, 0.22); }

.btn--accent { background: var(--clr-orange); color: #fff; box-shadow: 0 4px 14px rgba(255, 75, 43, 0.26); }
.btn--accent:hover { background: #e23a1e; color: #fff; box-shadow: 0 8px 22px rgba(255, 75, 43, 0.24); }

.btn--outline { border-color: var(--clr-blue); color: var(--clr-blue); background: transparent; }
.btn--outline:hover { background: var(--clr-blue); color: #fff; border-color: var(--clr-blue); }

.btn--light { background: #fff; color: var(--clr-deep); box-shadow: var(--shadow-1); }
.btn--light:hover { background: var(--clr-gold); color: var(--clr-deep); }

.btn--sm { padding: 0.5rem 1rem; font-size: 0.82rem; }
.btn--lg { padding: 1rem 2rem; font-size: 1.05rem; }

/* ---------- 通用组件：标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.32rem 0.72rem;
  border-radius: 999px;
  background: var(--clr-mist);
  color: var(--clr-ink);
  font: 700 0.74rem/1 var(--font-head);
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.tag--green { background: var(--clr-pale); color: #14512f; }
.tag--gold { background: rgba(242, 183, 5, 0.16); border: 1px solid rgba(242, 183, 5, 0.55); color: #8a6400; }
.tag--blue { background: rgba(0, 114, 206, 0.1); border: 1px solid rgba(0, 114, 206, 0.3); color: #0a63a8; }
.tag--orange { background: rgba(255, 75, 43, 0.1); border: 1px solid rgba(255, 75, 43, 0.35); color: #d63316; }

/* ---------- 通用组件：卡片 ---------- */
.panel {
  background: var(--clr-milk);
  border: 1px solid rgba(26, 42, 58, 0.09);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  padding: 1.6rem;
}
.panel--print {
  border: 1px solid rgba(11, 59, 46, 0.25);
  box-shadow: 5px 5px 0 var(--clr-pale), 6px 6px 0 rgba(11, 59, 46, 0.18);
}
.panel--green {
  background: linear-gradient(150deg, var(--clr-pale), #f2faf0);
  border: 1px solid rgba(0, 166, 81, 0.25);
}
.panel--dark {
  background: var(--clr-deep);
  color: rgba(226, 245, 238, 0.88);
  border-color: var(--clr-deep);
}
.panel--dark h2, .panel--dark h3 { color: #fff; }

/* ---------- 通用组件：数据块 ---------- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1.4rem 1.5rem;
  background: linear-gradient(145deg, #fff, var(--clr-mist));
  border-radius: var(--radius);
  border-left: 5px solid var(--clr-blue);
  box-shadow: var(--shadow-1);
}
.stat--green { border-left-color: var(--clr-green); }
.stat--orange { border-left-color: var(--clr-orange); }
.stat__num {
  font: 900 clamp(1.9rem, 4vw, 2.7rem)/1 var(--font-head);
  color: var(--clr-deep);
  font-style: italic;
  letter-spacing: -0.02em;
}
.stat__num em { color: var(--clr-orange); font-style: italic; }
.stat__label {
  font: 800 0.76rem/1.4 var(--font-head);
  letter-spacing: 0.16em;
  color: var(--clr-blue);
}

/* ---------- 通用组件：章节头 ---------- */
.section-head { max-width: 760px; margin-bottom: 2.2rem; }
.section-head--center { margin-inline: auto; text-align: center; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  font: 800 0.78rem/1 var(--font-head);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--clr-green);
}
.kicker::before { content: ""; width: 24px; height: 2px; background: var(--clr-gold); }

.section-title { margin-bottom: 0.5rem; }
.section-title em { font-style: italic; color: var(--clr-blue); font-weight: 900; }
.section-sub { font-size: 1rem; line-height: 1.75; color: #48606e; }

/* ---------- 通用组件：面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.3rem;
  padding: 1rem 0;
  font: 600 0.82rem/1.4 var(--font-head);
  color: #6b7f8b;
}
.breadcrumb a { color: var(--clr-blue); text-decoration: none; }
.breadcrumb a:hover { color: var(--clr-green); }
.breadcrumb__sep { color: #a5b8c3; }
.breadcrumb [aria-current="page"] { color: var(--clr-deep); }

/* ---------- 通用组件：图片占位容器 ---------- */
.pic {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(11, 59, 46, 0.12);
  background: linear-gradient(135deg, var(--clr-mist), #f3f9fb);
  box-shadow: var(--shadow-1);
}
.pic::before { content: ""; display: block; padding-top: 62.5%; }
.pic--square::before { padding-top: 100%; }
.pic--wide::before { padding-top: 42%; }
.pic--tall::before { padding-top: 130%; }

.pic__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  color: var(--clr-blue);
  font: 800 0.8rem/1.5 var(--font-head);
  letter-spacing: 0.14em;
  text-align: center;
}
.pic__placeholder::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1.5px dashed rgba(0, 114, 206, 0.4);
  border-radius: 10px;
}
.pic__label {
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.62);
  padding: 0.3rem 0.7rem;
}

/* ---------- 通用组件：技能树 ---------- */
.tree { display: grid; gap: 1rem; }
.tree__node {
  position: relative;
  border-left: 5px solid var(--clr-green);
  background: var(--clr-milk);
  border-radius: var(--radius);
  padding: 1.3rem 1.5rem;
  box-shadow: var(--shadow-1);
}
.tree__node--blue { border-left-color: var(--clr-blue); }
.tree__node--orange { border-left-color: var(--clr-orange); }
.tree__num { font: 900 1.7rem/1 var(--font-head); font-style: italic; color: var(--clr-blue); }
.tree__title { margin-top: 0.2rem; font: 800 1.08rem/1.3 var(--font-head); color: var(--clr-deep); }
.tree__node p { margin-top: 0.5rem; font-size: 0.9rem; line-height: 1.7; }

/* ---------- 通用组件：表格 ---------- */
.table-wrap {
  overflow-x: auto;
  background: var(--clr-milk);
  border: 1px solid rgba(26, 42, 58, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  -webkit-overflow-scrolling: touch;
}
.table-wrap table { width: 100%; border-collapse: collapse; min-width: 560px; font-size: 0.92rem; }
.table-wrap th, .table-wrap td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid rgba(11, 59, 46, 0.08); }
.table-wrap th { background: var(--clr-mist); font: 800 0.82rem/1.3 var(--font-head); letter-spacing: 0.06em; color: var(--clr-deep); }
.table-wrap tr:last-child td { border-bottom: 0; }

/* ---------- 无障碍工具 ---------- */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

/* ---------- Skip Link 与滚动进度 ---------- */
.skip-link {
  position: fixed;
  top: -72px;
  left: 1rem;
  z-index: 1000;
  background: var(--clr-deep);
  color: #fff;
  font: 800 0.85rem/1 var(--font-head);
  padding: 0.85rem 1.2rem;
  border-radius: 0 0 var(--radius) var(--radius);
  text-decoration: none;
  box-shadow: var(--shadow-2);
  transition: top 0.22s ease;
}
.skip-link:focus-visible { top: 0; color: #fff; }

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-green) 0%, var(--clr-blue) 60%, var(--clr-orange) 100%);
  pointer-events: none;
}

/* ---------- 顶部公告条 ---------- */
.announce-bar {
  background: var(--clr-orange);
  border-bottom: 2px solid var(--clr-gold);
  overflow: hidden;
  color: #fff;
}
.announce-track {
  display: flex;
  width: max-content;
  animation: announce-ticker 22s linear infinite;
}
.announce-item {
  flex: none;
  padding: 0.42rem 3rem 0.42rem 0;
  font: 700 0.8rem/1.4 var(--font-head);
  letter-spacing: 0.12em;
  white-space: nowrap;
}
.announce-item::before { content: "✦ "; color: #ffe08a; }

@keyframes announce-ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-25%); }
}

/* ---------- 头部 ---------- */
.site-header {
  position: relative;
  background: var(--clr-milk);
  border-bottom: 1px solid rgba(11, 59, 46, 0.15);
}

.header-inner { padding-top: 0.9rem; padding-bottom: 0.9rem; }

.brand-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  flex: none;
  background: linear-gradient(145deg, #fff, var(--clr-mist));
  border: 1px solid rgba(11, 59, 46, 0.22);
  border-radius: 15px 15px 15px 5px;
  box-shadow: 3px 3px 0 var(--clr-pale);
  color: var(--clr-deep);
}
.brand-mark__svg { width: 34px; height: 34px; }
.brand-mark__peak { fill: none; stroke: currentColor; stroke-width: 3; stroke-linejoin: round; }
.brand-mark__ball { fill: var(--clr-gold); }
.brand-mark__wave-1 { fill: none; stroke: var(--clr-green); stroke-width: 2.5; opacity: 0.9; }
.brand-mark__wave-2 { fill: none; stroke: var(--clr-blue); stroke-width: 1.6; opacity: 0.55; }

.brand-text { display: flex; flex-direction: column; line-height: 1.1; min-width: 0; }

.brand-name {
  font: 900 1.72rem/1 var(--font-head);
  color: var(--clr-deep);
  letter-spacing: 0.02em;
}
.brand-name::after {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-left: 4px;
  background: var(--clr-orange);
  transform: rotate(45deg);
}
.brand-sub {
  margin-top: 0.28rem;
  font: 700 0.68rem/1 var(--font-head);
  letter-spacing: 0.24em;
  color: var(--clr-green);
  text-transform: uppercase;
}

/* ---------- 搜索框 ---------- */
.site-search {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  width: min(240px, 28vw);
  background: #fff;
  border: 1.5px solid rgba(11, 59, 46, 0.18);
  border-radius: 999px;
  padding: 0.42rem 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.site-search:focus-within {
  border-color: var(--clr-green);
  box-shadow: 0 0 0 4px rgba(0, 166, 81, 0.14);
}
.site-search__icon { width: 17px; height: 17px; flex: none; color: var(--clr-blue); }
.site-search__input {
  border: 0;
  background: transparent;
  outline: none;
  width: 100%;
  font: 600 0.86rem/1.3 var(--font-head);
  color: var(--clr-ink);
}
.site-search__input::placeholder { color: #8ba1ae; opacity: 1; }

/* ---------- 移动导航开关 ---------- */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 46px;
  height: 46px;
  flex: none;
  padding: 10px 11px;
  background: var(--clr-deep);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.nav-toggle:hover { background: var(--clr-green); }
.nav-toggle__line {
  display: block;
  height: 2px;
  width: 100%;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- 主导航 ---------- */
.site-nav-wrap { margin-top: 0.35rem; }

.site-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--nav-z);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  padding: 1rem 1rem calc(1rem + env(safe-area-inset-bottom));
  counter-reset: nav-index;
  background: var(--clr-deep);
  border-top: 3px solid var(--clr-gold);
  box-shadow: 0 -12px 32px rgba(6, 22, 16, 0.28);
  transform: translateY(105%);
  visibility: hidden;
  transition: transform 0.35s ease, visibility 0.35s;
  max-height: 84vh;
  overflow-y: auto;
}
.site-nav[data-open] {
  transform: translateY(0);
  visibility: visible;
}

.site-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.85rem 1rem;
  counter-increment: nav-index;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  color: #dff1e9;
  font: 800 0.94rem/1.2 var(--font-head);
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.site-nav__link::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: none;
  background: var(--clr-blue);
  transform: rotate(45deg);
  opacity: 0.55;
  transition: opacity var(--transition), background var(--transition);
}
.site-nav__link::after {
  content: "0" counter(nav-index);
  font: 800 0.66rem/1 var(--font-head);
  color: var(--clr-gold);
  letter-spacing: 0.06em;
  opacity: 0.8;
}
.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  background: rgba(0, 166, 81, 0.28);
  border-color: rgba(242, 183, 5, 0.5);
  color: #fff;
}
.site-nav__link:hover::before,
.site-nav__link[aria-current="page"]::before {
  background: var(--clr-gold);
  opacity: 1;
}

/* ---------- 页头山脊线 ---------- */
.header-ridge {
  height: 12px;
  background: var(--clr-deep);
  overflow: hidden;
}
.header-ridge__svg { width: 100%; height: 100%; }
.header-ridge__svg path { fill: var(--clr-green); }

/* ---------- 桌面端头部/导航 ---------- */
@media (min-width: 900px) {
  .nav-toggle { display: none; }

  .site-nav-wrap {
    background: linear-gradient(100deg, var(--clr-deep) 0%, #0d4d3b 55%, var(--clr-green) 130%);
    clip-path: polygon(0 0, 100% 0, calc(100% - 2.6rem) 100%, 0 100%);
  }

  .site-nav {
    position: static;
    display: flex;
    align-items: stretch;
    gap: 0;
    max-height: none;
    overflow: visible;
    background: transparent;
    border-top: 0;
    box-shadow: none;
    padding: 0;
    transform: none;
    visibility: visible;
    transition: none;
  }

  .site-nav__link {
    padding: 1.05rem 1.5rem;
    background: transparent;
    border: 0;
    border-bottom: 3px solid transparent;
    border-radius: 0;
    color: #f0fbf6;
    font-size: 1rem;
  }
  .site-nav__link::before { opacity: 0; }
  .site-nav__link::after { display: none; }

  .site-nav__link:hover,
  .site-nav__link[aria-current="page"] {
    background: linear-gradient(180deg, rgba(0, 166, 81, 0.14), rgba(0, 166, 81, 0.02));
    border-bottom-color: var(--clr-gold);
    color: #fff;
  }
  .site-nav__link:hover::before,
  .site-nav__link[aria-current="page"]::before {
    opacity: 1;
    background: var(--clr-orange);
  }
}

/* ---------- 移动端搜索换行 ---------- */
@media (max-width: 639px) {
  .site-search { order: 3; width: 100%; margin-left: 0; }
  .nav-toggle { margin-left: auto; }
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--clr-deep);
  color: rgba(226, 245, 238, 0.8);
  margin-top: 4rem;
}

.footer-ridge {
  height: 26px;
  overflow: hidden;
  background: var(--clr-deep);
}
.footer-ridge__svg { width: 100%; height: 100%; }
.footer-ridge__fill { fill: rgba(0, 166, 81, 0.16); }
.footer-ridge__line { fill: none; stroke: rgba(242, 183, 5, 0.5); stroke-width: 1.6; }

.footer-main {
  display: grid;
  gap: 2.4rem 2rem;
  padding-top: 2.4rem;
  padding-bottom: 2.4rem;
}

.footer-brand .brand { margin-bottom: 1rem; }

.brand--footer .brand-mark {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(242, 183, 5, 0.45);
  box-shadow: none;
}
.brand--footer .brand-name { color: #fff; }
.brand--footer .brand-sub { color: #96d7b8; }
.brand--footer .brand-mark__wave-1 { stroke: #4fe38f; }
.brand--footer .brand-mark__wave-2 { stroke: #6ab9ff; }

.footer-desc {
  font: 400 0.9rem/1.75 var(--font-body);
  color: rgba(226, 245, 238, 0.7);
  max-width: 32em;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1rem;
  padding: 0.4rem 0.8rem;
  background: rgba(0, 166, 81, 0.16);
  border: 1px solid rgba(0, 166, 81, 0.4);
  border-radius: 999px;
  color: #aaf0cf;
  font: 800 0.76rem/1 var(--font-head);
}
.status-chip__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--clr-green);
  box-shadow: 0 0 0 3px rgba(0, 166, 81, 0.25);
  animation: status-pulse 2.2s ease-in-out infinite;
}
@keyframes status-pulse {
  50% { box-shadow: 0 0 0 7px rgba(0, 166, 81, 0.08); }
}

.footer-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1.1rem;
  color: #fff;
  font-size: 1.02rem;
  letter-spacing: 0.08em;
}
.footer-title__bar { width: 18px; height: 3px; background: var(--clr-gold); flex: none; }

.footer-links { list-style: none; padding-left: 0; }
.footer-links li { margin: 0.2rem 0; }
.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0;
  color: rgba(226, 245, 238, 0.82);
  text-decoration: none;
  font: 600 0.9rem/1.4 var(--font-head);
  transition: color var(--transition), transform var(--transition);
}
.footer-links a::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: none;
  background: var(--clr-blue);
  transform: rotate(45deg);
  transition: background var(--transition);
}
.footer-links a:hover { color: var(--clr-gold); transform: translateX(4px); }
.footer-links a:hover::before { background: var(--clr-gold); }

.footer-contact { list-style: none; padding-left: 0; }
.contact-line {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.34rem 0;
  font: 400 0.86rem/1.6 var(--font-body);
  color: rgba(226, 245, 238, 0.78);
}
.contact-lab {
  flex: none;
  min-width: 3.2em;
  font: 800 0.72rem/1.7 var(--font-head);
  letter-spacing: 0.12em;
  color: var(--clr-gold);
}
.contact-val {
  color: rgba(226, 245, 238, 0.82);
  text-decoration-color: rgba(242, 183, 5, 0.4);
}
.contact-val:hover { color: var(--clr-gold); }

.footer-note {
  margin-top: 1.2rem;
  padding-left: 0.8rem;
  border-left: 2px solid rgba(242, 183, 5, 0.5);
  font: 400 0.8rem/1.7 var(--font-body);
  color: rgba(226, 245, 238, 0.6);
}

.footer-bottom {
  background: rgba(4, 20, 14, 0.5);
  border-top: 1px solid rgba(242, 183, 5, 0.2);
}
.footer-bottom__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem 2rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
  font: 500 0.8rem/1.5 var(--font-head);
  color: rgba(226, 245, 238, 0.6);
}

@media (min-width: 640px) {
  .footer-main { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .footer-main { grid-template-columns: 1.4fr 0.9fr 1.3fr 1fr; gap: 3rem; }
}

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: var(--toast-z);
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--clr-orange);
  border: 2px solid rgba(255, 255, 255, 0.85);
  color: #fff;
  box-shadow: 0 8px 22px rgba(6, 22, 16, 0.35);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.28s ease, transform 0.28s ease, visibility 0.28s, background 0.2s ease;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--clr-gold); color: var(--clr-deep); }
.to-top__icon { width: 22px; height: 22px; }

/* ---------- 焦点可见 ---------- */
:focus-visible {
  outline: 3px solid var(--clr-gold);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .announce-track { animation: none !important; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}