/* ============================================================
   SpaceTime Society · 1:1 复刻样式
   主题：深空蓝紫 + 青绿（tuequoise） 强调
   ============================================================ */

/* Design Token：项目级 Glassmorphism 规范（与 topbar.8d4aa38f.css 一致） */
:root {
  --glass-bg-light:           rgba(255, 255, 255, 0.55);
  --glass-border-light:        rgba(15, 23, 42, 0.06);
  --glass-highlight-light:     rgba(255, 255, 255, 0.6);
  --glass-shadow-light:        rgba(15, 23, 42, 0.06);
  --glass-bg-dark:             rgba(10, 14, 39, 0.72);
  --glass-border-dark:         rgba(255, 255, 255, 0.06);
  --glass-highlight-dark:      rgba(255, 255, 255, 0.08);
  --glass-shadow-dark:         rgba(0, 0, 0, 0.32);
  --glass-blur:                blur(20px) saturate(180%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", "Open Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: #e8eaf0;
  background: #0a0e27;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
a:hover { color: #3b82f6; }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

:root {
  --bg-deep:   #05071a;
  --bg-dark:   #0a0e27;
  --bg-mid:    #11173b;
  --bg-card:   #161c45;
  --line:      rgba(255,255,255,0.08);
  --line-2:    rgba(59,130,246,0.35);
  --text:      #e8eaf0;
  --text-dim:  #a3a8c4;
  --text-mute: #6b7099;
  --accent:    #3b82f6;        /* tuequoise / 青绿松石 */
  --accent-2:  #2563eb;
  --accent-3:  #60a5fa;
  --warn:      #f39c12;
  --shadow:    0 10px 40px rgba(0,0,0,0.4);
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ============== 星空背景 ============== */
.bg-stars {
  position: absolute; inset: 0;
  background:
    radial-gradient(2px 2px at 20% 30%, #fff, transparent),
    radial-gradient(1px 1px at 60% 70%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 80% 20%, #fff, transparent),
    radial-gradient(1px 1px at 30% 80%, #fff, transparent),
    radial-gradient(1px 1px at 90% 60%, #fff, transparent),
    radial-gradient(2px 2px at 10% 60%, #fff, transparent),
    radial-gradient(1px 1px at 50% 40%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 70% 10%, #fff, transparent),
    radial-gradient(1px 1px at 40% 50%, #fff, transparent),
    radial-gradient(1px 1px at 15% 15%, #fff, transparent),
    radial-gradient(1px 1px at 85% 85%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 25% 95%, #fff, transparent),
    radial-gradient(1px 1px at 55% 5%, #fff, transparent),
    radial-gradient(1px 1px at 75% 50%, #fff, transparent),
    radial-gradient(1px 1px at 5% 45%, #fff, transparent),
    radial-gradient(1px 1px at 65% 95%, #fff, transparent);
  background-size: 600px 600px;
  background-repeat: repeat;
  opacity: 0.6;
  animation: twinkle 6s infinite ease-in-out alternate;
  z-index: 0;
}
@keyframes twinkle {
  0%   { opacity: 0.4; }
  100% { opacity: 0.8; }
}
.bg-nebula {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 30% 20%, rgba(59,130,246,0.18), transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 70%, rgba(108,92,231,0.15), transparent 60%),
    radial-gradient(ellipse 40% 30% at 50% 50%, rgba(52,152,219,0.10), transparent 60%);
  z-index: 0;
}

/* ============== Section 通用 ============== */
.section {
  position: relative;
  padding: 90px 0;
  min-height: 60vh;
  overflow: hidden;
}
.section-dark {
  background: var(--bg-dark);
}
.section-image {
  /* 原本靠外站 patterns 图 + ::after 暗叠，外站图已删除；
     改为多蓝色 radial 光晕 + 底色 + ::after 微暗叠，跟 .section-dark 区分 */
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(59,130,246,0.18) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 50% 100%, rgba(59,130,246,0.12) 0%, transparent 70%),
    var(--bg-dark);
}
.section-image::after {
  content: "";
  position: absolute; inset: 0;
  background: rgba(5,7,26,0.4);
  z-index: 0;
  pointer-events: none;
}
.section-image .container { z-index: 2; }

.section-head {
  text-align: center;
  margin-bottom: 50px;
}
.section-head.light { color: #fff; }
.section-title {
  font-size: 38px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 8px;
  color: #fff;
  position: relative;
  display: inline-block;
  padding: 0 20px;
}
.section-title::before, .section-title::after {
  content: "✦";
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 18px;
}
.section-title::before { left: -5px; }
.section-title::after  { right: -5px; }
.section-title span {
  display: block;
  font-size: 14px;
  font-weight: 300;
  letter-spacing: 4px;
  color: var(--accent);
  margin-top: 6px;
  text-transform: uppercase;
}
.section-lead {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 30px;
  color: var(--text-dim);
  font-size: 15px;
}


/* ============== Hero ============== */
.section-hero {
  padding: 160px 0 100px;
  min-height: 100vh;
  display: flex;
  align-items: center;
}
.hero-content {
  text-align: center;
  margin-bottom: 80px;
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid var(--line-2);
  border-radius: 30px;
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 3px;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.hero-title {
  font-size: 72px;
  font-weight: 900;
  line-height: 1.1;
  color: #fff;
  letter-spacing: 4px;
  margin-bottom: 24px;
  text-shadow: 0 0 30px rgba(59,130,246,0.4);
  background: linear-gradient(135deg, #fff 0%, var(--accent) 50%, #60a5fa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-wechat {
  font-size: 15px;
  color: var(--text-dim);
}
.hero-wechat strong {
  color: var(--accent);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-left: 6px;
}

.cta-test {
  display: inline-block;
  margin-top: 8px;
  padding: 14px 42px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 4px;
  color: #fff;
  background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
  border: none;
  border-radius: 30px;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(59,130,246,0.4), 0 0 30px rgba(59,130,246,0.15);
  transition: all 0.25s ease;
}
.cta-test:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(59,130,246,0.55), 0 0 40px rgba(59,130,246,0.2);
  background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
}
.cta-test:active {
  transform: translateY(0);
  box-shadow: 0 4px 14px rgba(59,130,246,0.4);
}

.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 50px;
  position: relative;
  z-index: 1;
}
.tier-card {
  background: linear-gradient(160deg, rgba(22,28,69,0.9) 0%, rgba(10,14,39,0.9) 100%);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 36px 24px;
  text-align: center;
  color: #fff;
  position: relative;
  transition: all 0.3s ease;
  overflow: hidden;
}
.tier-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.tier-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 20px 50px rgba(59,130,246,0.25);
}
.tier-card:hover::before { opacity: 1; }
.tier-self {
  background: linear-gradient(160deg, rgba(59,130,246,0.18) 0%, rgba(10,14,39,0.9) 100%);
  border-color: var(--line-2);
  box-shadow: 0 0 30px rgba(59,130,246,0.18);
}
.tier-name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 1px;
  line-height: 1.3;
}
.tier-iq {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.tier-iq-num {
  display: inline-block;
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  margin-left: 4px;
  letter-spacing: 0;
}
.tier-diff {
  font-size: 16px;
  font-weight: 500;
  color: #fff;
  margin-bottom: 6px;
}
.tier-rate {
  font-size: 12px;
  color: var(--text-mute);
  letter-spacing: 1px;
}
.tier-marker {
  margin-top: 12px;
  font-size: 12px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 1px;
}

/* "查看" 按钮（nova/misty tier-card，透明底 + 蓝边蓝字） */
.tier-view-btn {
  display: inline-block;
  margin-top: 18px;
  padding: 10px 28px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: 30px;
  transition: all 0.3s ease;
  text-decoration: none;
  position: relative;
  z-index: 2;
}
.tier-view-btn::before {
  content: "→ ";
  margin-right: 4px;
  transition: transform 0.3s ease;
  display: inline-block;
}
.tier-view-btn:hover {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
  transform: translateY(-2px);
}
.tier-view-btn:hover::before {
  transform: translateX(4px);
}

/* ============== 关于我们：通用 block ============== */
.about-block {
  max-width: 880px;
  margin: 0 auto 60px;
}
.block-title {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent);
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.block-sub {
  font-size: 13px;
  font-weight: 300;
  color: var(--text-mute);
  letter-spacing: 3px;
  text-transform: uppercase;
}
.lead {
  font-size: 17px;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 14px;
}
.about-block p {
  color: var(--text-dim);
  margin-bottom: 14px;
  font-size: 15px;
  line-height: 1.85;
}
.about-block p strong {
  color: var(--accent);
  font-weight: 700;
}
.check-list li, .num-list li {
  position: relative;
  padding: 8px 0 8px 30px;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.7;
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 8px;
  color: var(--accent);
  font-weight: 700;
  font-size: 16px;
}
.num-list {
  counter-reset: nlist;
}
.num-list li {
  counter-increment: nlist;
  padding-left: 40px;
}
.num-list li::before {
  content: counter(nlist) ".";
  position: absolute;
  left: 0; top: 8px;
  color: var(--accent);
  font-weight: 700;
  font-family: "Roboto Condensed", sans-serif;
}
.note {
  margin-top: 14px;
  padding: 12px 18px;
  background: rgba(59,130,246,0.08);
  border-left: 3px solid var(--accent);
  border-radius: 0 6px 6px 0;
  font-size: 13px !important;
  color: var(--text-mute) !important;
}

/* 费用卡片 */
.fee-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.fee-card {
  background: linear-gradient(135deg, rgba(59,130,246,0.12), rgba(22,28,69,0.6));
  border: 1px solid var(--line-2);
  border-radius: 10px;
  padding: 24px 20px;
  text-align: center;
}
.fee-label {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 10px;
  letter-spacing: 1px;
}
.fee-amount {
  font-size: 16px;
  color: #fff;
  font-weight: 500;
}
.fee-amount span {
  font-size: 40px;
  font-weight: 700;
  color: var(--accent);
  margin: 0 4px;
  letter-spacing: 1px;
}
.fee-amount small {
  display: block;
  font-size: 12px;
  color: var(--text-mute);
  margin-top: 6px;
  font-weight: 300;
}
.faq {
  background: rgba(22,28,69,0.5);
  border-radius: 8px;
  padding: 18px 22px;
  border-left: 3px solid var(--accent);
}
.faq p { margin-bottom: 8px; font-size: 14px; }
.faq p:last-child { margin-bottom: 0; }
.faq strong { color: var(--accent); }

/* 数据网格 */
.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.data-cell {
  background: rgba(22,28,69,0.5);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 22px 14px;
  text-align: center;
  transition: all 0.3s ease;
}
.data-cell:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}
.data-num {
  font-size: 30px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 6px;
  font-family: "Roboto Condensed", sans-serif;
  letter-spacing: 1px;
}
.data-num span {
  font-size: 18px;
  color: var(--text-dim);
  margin-left: 2px;
}
.data-label {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 1px;
}

/* 申请 */
.apply-hero {
  text-align: center;
  margin: 40px 0 60px;
}
.apply-card {
  display: inline-block;
  background: linear-gradient(135deg, rgba(59,130,246,0.18), rgba(22,28,69,0.7));
  border: 1px solid var(--line-2);
  border-radius: 14px;
  padding: 30px 50px;
  position: relative;
  box-shadow: 0 10px 30px rgba(59,130,246,0.2);
}
.apply-eyebrow {
  font-size: 12px;
  color: var(--text-mute);
  letter-spacing: 3px;
  margin-bottom: 8px;
  text-transform: uppercase;
}
.apply-wechat {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 4px;
  margin-bottom: 8px;
  text-shadow: 0 0 20px rgba(59,130,246,0.4);
}
.apply-tip {
  font-size: 13px;
  color: var(--text-dim);
}

/* 报名流程 */
.process-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.process-item {
  display: flex;
  align-items: center;
  gap: 18px;
  background: rgba(22,28,69,0.5);
  padding: 18px 24px;
  border-radius: 10px;
  border: 1px solid var(--line);
  transition: all 0.3s ease;
}
.process-item:hover {
  border-color: var(--line-2);
  background: rgba(59,130,246,0.05);
}
.process-num {
  width: 40px; height: 40px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  font-family: "Roboto Condensed", sans-serif;
  box-shadow: 0 4px 12px rgba(59,130,246,0.4);
}
.process-text {
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.6;
}
.process-text strong {
  color: #fff;
  margin-right: 8px;
}
.process-text .hl {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 1px;
}
.wish {
  text-align: center;
  margin-top: 30px !important;
  font-size: 16px !important;
  color: var(--accent) !important;
  font-weight: 500;
}

/* 纪念品 */
.souvenir-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.souvenir-card {
  background: rgba(22,28,69,0.5);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  transition: all 0.3s ease;
}
.souvenir-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}
.souvenir-img {
  aspect-ratio: 1;
  background: rgba(0,0,0,0.3);
  border-radius: 8px;
  margin-bottom: 14px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.souvenir-img img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.souvenir-img.placeholder {
  background: linear-gradient(135deg, rgba(59,130,246,0.15), rgba(22,28,69,0.8));
  flex-direction: column;
  color: #fff;
  text-align: center;
  padding: 20px;
}
.souvenir-img.placeholder .ph-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--accent);
  letter-spacing: 2px;
}
.souvenir-img.placeholder .ph-sub {
  font-size: 12px;
  color: var(--text-mute);
  letter-spacing: 3px;
  text-transform: uppercase;
}
.souvenir-name {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.souvenir-desc {
  font-size: 13px;
  color: var(--text-mute);
}

/* 旗下社团 */
.club-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.club-card {
  background: rgba(22,28,69,0.5);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px 20px;
  text-align: center;
  transition: all 0.3s ease;
}
.club-card:hover {
  border-color: var(--accent);
  background: rgba(59,130,246,0.06);
  transform: translateY(-3px);
}
.club-icon {
  font-size: 36px;
  margin-bottom: 12px;
}
.club-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.club-card p {
  font-size: 13px;
  color: var(--text-mute);
  line-height: 1.7;
  text-align: left;
}

/* 学院 */
.college-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.college-card {
  background: linear-gradient(160deg, rgba(22,28,69,0.7), rgba(10,14,39,0.7));
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 30px 22px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.college-card::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
}
.college-gryffindor::after { background: linear-gradient(90deg, #740001, #ae0001, #d3a625); }
.college-hufflepuff::after { background: linear-gradient(90deg, #ecb939, #f0c75e, #726255); }
.college-ravenclaw::after  { background: linear-gradient(90deg, #0e1a40, #222f5b, #946b2d); }
.college-slytherin::after  { background: linear-gradient(90deg, #1a472a, #2a623d, #aaaaaa); }
.college-card:hover { transform: translateY(-5px); }
.college-name {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
  letter-spacing: 2px;
}
.college-en {
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 14px;
  letter-spacing: 3px;
  font-family: "Roboto Condensed", sans-serif;
}
.college-card p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 16px;
  min-height: 65px;
}
.college-rule {
  font-size: 12px;
  color: var(--warn);
  padding-top: 12px;
  border-top: 1px solid var(--line);
  letter-spacing: 1px;
}

/* 学术活动 */
.lecture-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.lecture-card {
  background: rgba(22,28,69,0.5);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 26px 24px;
  transition: all 0.3s ease;
}
.lecture-card:hover { border-color: var(--accent); }
.lecture-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.lecture-card h3 .ev-en {
  display: block;
  font-size: 13px;
  font-weight: 300;
  color: var(--accent);
  margin-top: 4px;
  letter-spacing: 1px;
}
.lecture-card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
  margin-bottom: 8px;
}
.lecture-card p strong { color: #fff; }

/* 赛事活动 */
.event-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.event-item {
  background: rgba(22,28,69,0.6);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 0 10px 10px 0;
  padding: 24px 28px;
  transition: all 0.3s ease;
}
.event-item:hover {
  background: rgba(59,130,246,0.06);
  transform: translateX(4px);
}
.event-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}
.event-item h3 .ev-en {
  font-size: 13px;
  font-weight: 300;
  color: var(--accent);
  margin-left: 8px;
  letter-spacing: 1px;
}
.event-item p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.85;
  margin-bottom: 6px;
}
.event-item p strong { color: var(--accent); }

/* 名校榜 */
.school-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 30px;
}
.school-tab {
  padding: 10px 20px;
  background: rgba(22,28,69,0.5);
  border: 1px solid var(--line);
  border-radius: 30px;
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 1px;
  transition: all 0.3s ease;
}
.school-tab:hover { border-color: var(--accent); color: var(--accent); }
.school-tab.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 4px 15px rgba(59,130,246,0.3);
}
.school-panel {
  background: rgba(22,28,69,0.5);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 30px;
}
.school-region {
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}
.school-region:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.school-region h4 {
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 8px;
  letter-spacing: 2px;
}
.school-region p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
}

/* 会员名单 */
.memberlist {
  background: rgba(5,7,26,0.6);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 30px 36px;
  max-height: 700px;
  overflow-y: auto;
}
.memberlist::-webkit-scrollbar { width: 8px; }
.memberlist::-webkit-scrollbar-track { background: rgba(0,0,0,0.3); border-radius: 4px; }
.memberlist::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 4px; }
.ml-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  margin-top: 22px;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
  letter-spacing: 1px;
}
.ml-title:first-child { margin-top: 0; }
.ml-names {
  font-size: 14px;
  color: #fff;
  line-height: 2;
  letter-spacing: 1px;
  word-break: break-word;
}

/* 外部链接 */
.external-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 720px;
  margin: 0 auto;
}
.external-card {
  background: rgba(22,28,69,0.6);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px 20px;
  text-align: center;
  transition: all 0.3s ease;
}
.external-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(59,130,246,0.2);
}
.external-logo {
  width: 80px; height: 80px;
  margin: 0 auto 14px;
  background: #fff;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  overflow: hidden;
}
.external-logo img {
  max-width: 100%; max-height: 100%;
  object-fit: contain;
}
.external-name {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}
.external-tag {
  font-size: 12px;
  color: var(--text-mute);
  letter-spacing: 2px;
  margin-bottom: 10px;
}
.external-card p {
  font-size: 13px;
  color: var(--text-dim);
}

/* 重要项目 */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 820px;
  margin: 0 auto;
}
.project-card {
  background: linear-gradient(160deg, rgba(59,130,246,0.1), rgba(22,28,69,0.7));
  border: 1px solid var(--line-2);
  border-radius: 12px;
  padding: 30px 26px;
  color: #fff;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 20px 50px rgba(59,130,246,0.2);
}
.project-name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--accent);
  letter-spacing: 1px;
}
.project-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.85;
  margin-bottom: 16px;
}
.project-link {
  font-size: 14px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 1px;
}

/* 电视节目 */
.tv-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 820px;
  margin: 0 auto;
}
.tv-card {
  background: rgba(22,28,69,0.6);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
  text-align: center;
  color: #fff;
}
.tv-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.tv-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.85;
  margin-bottom: 8px;
}

/* Footer */
.site-footer {
  background: #03051a;
  border-top: 1px solid var(--line);
  padding: 40px 0;
  text-align: center;
  color: var(--text-mute);
  font-size: 14px;
  letter-spacing: 1px;
}
.site-footer p { margin: 4px 0; }
.site-footer p:first-child {
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 10px;
  letter-spacing: 2px;
}

/* 回到顶部 */
.back-top {
  position: fixed;
  right: 24px; bottom: 24px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(59,130,246,0.4);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
  transition: all 0.3s ease;
}
.back-top:hover { transform: translateY(-3px); }
.back-top.show { display: flex; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #05071a; }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--accent), var(--accent-2)); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-3); }

/* 入场动画 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Spotlight 鼠标附近高亮 =====
   思路：mousemove 时把鼠标坐标写到 :root 的 --mouse-x / --mouse-y；
   body::after 是一层全屏 fixed 覆盖，pointer-events: none 不挡操作；
   用 mix-blend-mode: soft-light + 白色 radial-gradient，让鼠标周围一片"提亮区"。
   浅色背景下基本不可见（符合"主页深色才需要 spotlight"的预期）；
   深色背景（主页 / nova / misty / sts 全部深色）上呈现自然高亮。 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  mix-blend-mode: soft-light;
  background: radial-gradient(
    circle 160px at var(--mouse-x, -1000px) var(--mouse-y, -1000px),
    rgba(255, 255, 255, 0.45) 0%,
    transparent 60%
  );
  will-change: background;
}

/* === num-stats：时空俱乐部 / course-detail 顶栏下拉内的资产/签到块 === */
.num-stats {
  padding: 10px 12px 6px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
  display: flex; flex-direction: column; gap: 4px;
}
.num-stat-row {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--text-secondary, #cbd5e1);
  padding: 6px 8px; border-radius: 8px;
  cursor: pointer; transition: background 0.15s ease;
  user-select: none; -webkit-user-select: none;
  font-variant-numeric: tabular-nums;
}
.num-stat-row:hover { background: rgba(148, 163, 184, 0.12); }
.num-stat-row .num-stat-icon { font-size: 16px; line-height: 1; }
.num-stat-row .num-stat-value {
  font-weight: 700; color: var(--text-primary, #f1f5f9);
  font-size: 14px; letter-spacing: 0.01em;
}
.num-stat-row .num-stat-suffix { color: var(--text-muted, #94a3b8); font-size: 12px; }
.num-stat-row:focus-visible { outline: 2px solid var(--accent, #3b82f6); outline-offset: 1px; }
.num-checkin-slot { display: flex; }
.num-checkin-slot:empty { display: none; }

/* 浅色主题（course-detail 之类的浅底页面）下让数字 + 文字色可读 */
.user-menu .um-stat-row .um-stat-value,
.user-menu .um-stat-row .um-stat-suffix { color: var(--text-primary, #0f172a); }
.user-menu .um-stat-row .um-stat-suffix { color: var(--text-muted, #94a3b8); }