/* ============================================================
   千名 QIANMING · 玻璃拟态 (Glassmorphism) 设计系统
   ============================================================ */
:root {
  --blur-amount: 15px;
  --glass-opacity: .14;
  --glass-bg: rgba(255, 255, 255, .14);
  --glass-bg-strong: rgba(255, 255, 255, .22);
  --glass-bg-subtle: rgba(255, 255, 255, .08);
  --glass-border: rgba(255, 255, 255, .28);
  --c-blue: #0080FF;
  --c-purple: #8B00FF;
  --c-pink: #FF1493;
  --c-teal: #20B2AA;
  --c-deep: #170B44;
  --text-color: #FFFFFF;
  --text-muted: rgba(255, 255, 255, .78);
  --radius: 14px;
  --container: 1200px;
  --transition: .3s cubic-bezier(.4, 0, .2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-color);
  background: var(--c-deep);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 鲜艳渐变背景（固定层） ---------- */
.bg-scene {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(135deg, #170B44 0%, #2A1B6E 40%, #1A0F52 100%);
  overflow: hidden;
}
.bg-scene::before,
.bg-scene::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .55;
}
.bg-scene::before {
  width: 55vw; height: 55vw;
  top: -18vw; right: -12vw;
  background: radial-gradient(circle, var(--c-blue), transparent 65%);
}
.bg-scene::after {
  width: 48vw; height: 48vw;
  bottom: -16vw; left: -10vw;
  background: radial-gradient(circle, var(--c-purple), transparent 65%);
}
.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .4;
}
.bg-orb-pink {
  width: 34vw; height: 34vw;
  top: 42%; left: 55%;
  background: radial-gradient(circle, var(--c-pink), transparent 65%);
}
.bg-orb-teal {
  width: 26vw; height: 26vw;
  top: 68%; right: 8%;
  background: radial-gradient(circle, var(--c-teal), transparent 65%);
}

/* ---------- 布局 ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
main { display: block; }
section { padding: 80px 0; }
.section-head { margin-bottom: 48px; max-width: 640px; }

/* ---------- 玻璃拟态核心 ---------- */
.glass {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--blur-amount));
  backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
}
.glass-strong {
  background: var(--glass-bg-strong);
  -webkit-backdrop-filter: blur(var(--blur-amount));
  backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
}

/* ---------- 排版 ---------- */
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-teal);
  margin-bottom: 16px;
}
h1, h2, h3 { color: var(--text-color); }
h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
}
h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}
h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 8px;
}
p { max-width: 34em; color: var(--text-muted); }
.lead { font-size: 17px; }
.text-gradient {
  background: linear-gradient(90deg, var(--c-blue), var(--c-pink));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.small { font-size: 14px; color: var(--text-muted); }

/* ---------- 导航栏（粘性玻璃） ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(23, 11, 68, .55);
  -webkit-backdrop-filter: blur(var(--blur-amount));
  backdrop-filter: blur(var(--blur-amount));
  border-bottom: 1px solid var(--glass-border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text-color);
  text-decoration: none;
}
.brand svg { flex-shrink: 0; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--text-color); background: var(--glass-bg-subtle); }
.nav-links a.active { color: var(--text-color); background: var(--glass-bg); }
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  color: var(--text-color);
  cursor: pointer;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 12px 28px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--c-blue), var(--c-purple));
  color: #fff;
  box-shadow: 0 8px 24px rgba(0, 128, 255, .35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 128, 255, .5);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(0, 128, 255, .3); }
.btn-secondary {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--blur-amount));
  backdrop-filter: blur(var(--blur-amount));
  border-color: var(--glass-border);
  color: var(--text-color);
}
.btn-secondary:hover { background: var(--glass-bg-strong); transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  padding: 12px 16px;
}
.btn-ghost:hover { color: var(--c-teal); }
.btn:disabled, .btn.disabled {
  opacity: .45;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}
.btn-sm { min-height: 40px; padding: 8px 20px; font-size: 14px; }

/* ---------- Chip 信息条 ---------- */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--text-color);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--blur-amount));
  backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  border-radius: 999px;
}
.chip b { color: var(--c-teal); font-weight: 700; }

/* ---------- 卡片 ---------- */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  padding: 24px;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--blur-amount));
  backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.card:hover {
  background: var(--glass-bg-strong);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, .25);
}
.card .icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px; height: 52px;
  margin-bottom: 16px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(0,128,255,.3), rgba(139,0,255,.3));
  border: 1px solid var(--glass-border);
  color: #fff;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-teal);
  text-decoration: none;
  transition: var(--transition);
}
.card-link:hover { gap: 10px; color: #5ee0d8; }

/* ---------- 徽标 Badge ---------- */
.badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  border-radius: 999px;
  border: 1px solid var(--glass-border);
}
.badge-blue { background: rgba(0,128,255,.25); color: #7dc4ff; }
.badge-pink { background: rgba(255,20,147,.25); color: #ff8ac4; }
.badge-teal { background: rgba(32,178,170,.25); color: #6fe0d8; }
.badge-purple { background: rgba(139,0,255,.3); color: #c98aff; }

/* ---------- 开关 Toggle ---------- */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  min-height: 44px;
}
.toggle input { position: absolute; opacity: 0; width: 0; height: 0; }
.toggle .track {
  width: 52px; height: 28px;
  border-radius: 999px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: var(--transition);
  position: relative;
}
.toggle .track::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: #fff;
  transition: var(--transition);
}
.toggle input:checked + .track {
  background: linear-gradient(135deg, var(--c-blue), var(--c-purple));
  border-color: transparent;
}
.toggle input:checked + .track::after { transform: translateX(24px); }
.toggle input:focus-visible + .track { outline: 2px solid var(--c-teal); outline-offset: 2px; }
.toggle .toggle-label { font-size: 14px; color: var(--text-muted); }

/* ---------- 表单 ---------- */
.form-card { padding: 32px; max-width: 640px; }
.form-group { margin-bottom: 24px; }
.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}
.form-control {
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  font-family: inherit;
  font-size: 15px;
  color: var(--text-color);
  background: var(--glass-bg-subtle);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.form-control::placeholder { color: rgba(255, 255, 255, .45); }
.form-control:focus {
  outline: none;
  border-color: var(--c-blue);
  box-shadow: 0 0 0 3px rgba(0, 128, 255, .3);
  background: var(--glass-bg);
}
textarea.form-control { min-height: 120px; resize: vertical; }

/* ---------- 焦点可见 ---------- */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--c-teal);
  outline-offset: 2px;
  border-radius: var(--radius);
}

/* ---------- Hero ---------- */
.hero { padding: 96px 0 72px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: center;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 32px; }
.hero-visual {
  position: relative;
  min-height: 380px;
}
.glass-panel {
  position: absolute;
  border-radius: var(--radius);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--blur-amount));
  backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .3);
}
.glass-panel-1 { width: 72%; height: 62%; top: 4%; left: 0; z-index: 3; padding: 24px; }
.glass-panel-2 { width: 56%; height: 46%; bottom: 6%; right: 0; z-index: 2; background: var(--glass-bg-strong); }
.glass-panel-3 { width: 40%; height: 30%; top: 12%; right: 6%; z-index: 1; background: linear-gradient(135deg, rgba(0,128,255,.35), rgba(255,20,147,.3)); border: none; }
.panel-bar { height: 10px; border-radius: 5px; background: rgba(255,255,255,.25); margin-bottom: 12px; }
.panel-bar.w60 { width: 60%; } .panel-bar.w80 { width: 80%; } .panel-bar.w40 { width: 40%; }
.panel-chip { display: inline-block; margin-top: 8px; padding: 6px 14px; font-size: 12px; font-weight: 700; color: #fff; background: linear-gradient(135deg, var(--c-blue), var(--c-pink)); border-radius: 999px; }

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 48px;
  background: rgba(10, 5, 32, .7);
  -webkit-backdrop-filter: blur(var(--blur-amount));
  backdrop-filter: blur(var(--blur-amount));
  border-top: 1px solid var(--glass-border);
  padding: 56px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-grid h3 { font-size: 15px; margin-bottom: 16px; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 10px; }
.footer-grid a {
  font-size: 14px;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}
.footer-grid a:hover { color: var(--c-teal); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
  text-align: center;
}

/* ---------- 页面 Hero（子页） ---------- */
.page-hero { padding: 80px 0 48px; }

/* ---------- 时间线（关于我们） ---------- */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 7px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-blue), var(--c-pink));
  border-radius: 2px;
}
.timeline-item { position: relative; padding-bottom: 32px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -32px; top: 6px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--c-deep);
  border: 3px solid var(--c-blue);
}
.timeline-item .year { font-size: 13px; font-weight: 700; letter-spacing: .1em; color: var(--c-teal); }

/* ---------- 团队成员 ---------- */
.member-card { text-align: center; }
.avatar {
  width: 96px; height: 96px;
  margin: 0 auto 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  border: 2px solid var(--glass-border);
}
.avatar-blue { background: linear-gradient(135deg, var(--c-blue), var(--c-purple)); }
.avatar-pink { background: linear-gradient(135deg, var(--c-pink), var(--c-purple)); }
.avatar-teal { background: linear-gradient(135deg, var(--c-teal), var(--c-blue)); }
.member-role { font-size: 14px; color: var(--c-teal); font-weight: 500; margin-bottom: 8px; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 16px; }

/* ---------- 详情页 ---------- */
.detail-body { max-width: 760px; }
.detail-body h2 { margin-top: 48px; }
.detail-body h2:first-child { margin-top: 0; }
.detail-body ul { margin: 16px 0 16px 24px; color: var(--text-muted); }
.detail-body li { margin-bottom: 8px; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 14px;
}
.breadcrumb a { color: var(--c-teal); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { color: rgba(255,255,255,.45); }

/* ---------- 动效 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .glass-panel-1 { animation: float 7s ease-in-out infinite; }
  .glass-panel-2 { animation: float 9s ease-in-out infinite reverse; }
  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
  }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  section { padding: 56px 0; }
  .hero { padding: 64px 0 48px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 300px; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px 24px 24px;
    background: rgba(23, 11, 68, .92);
    -webkit-backdrop-filter: blur(var(--blur-amount));
    backdrop-filter: blur(var(--blur-amount));
    border-bottom: 1px solid var(--glass-border);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; }
  .nav-cta { display: none; }
}