/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f0f3f7;
  color: #333;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== Color System ===== */
:root {
  --primary: #1a73e8;
  --primary-light: #e8f0fe;
  --primary-dark: #0d47a1;
  --primary-gradient: linear-gradient(135deg, #1a73e8 0%, #6366f1 100%);
  --green: #07c160;
  --green-light: #e6f7ef;
  --accent: #ff6b35;
  --text: #333333;
  --text-secondary: #666666;
  --text-muted: #999999;
  --bg-white: #ffffff;
  --bg-light: #f5f7fa;
  --bg-section: #f0f4f8;
  --border: #e0e6ed;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.1);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
  --shadow-card: 0 4px 12px rgba(26,115,232,0.08);
  --shadow-card-hover: 0 12px 32px rgba(26,115,232,0.18);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
}

/* ===== Header ===== */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 12px rgba(0,0,0,0.04);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1200px; margin: 0 auto; padding: 14px 24px;
}
.logo-area { display: flex; align-items: center; gap: 12px; }
.logo-icon {
  width: 42px; height: 42px;
  background: var(--primary-gradient);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 20px; font-weight: 700;
  box-shadow: 0 4px 12px rgba(26,115,232,0.3);
}
.logo-text h1 { font-size: 20px; font-weight: 700; color: var(--text); }
.logo-sub { font-size: 13px; color: var(--text-muted); }
.menu-btn {
  background: none; border: 1px solid var(--border); color: var(--text-secondary);
  cursor: pointer; padding: 8px 12px; border-radius: var(--radius-sm);
  transition: all 0.2s;
}
.menu-btn:hover { background: var(--bg-light); }

/* ===== Nav Drawer ===== */
.nav-drawer { position: fixed; top: 0; left: 0; z-index: 200; display: none; }
.nav-drawer.open { display: flex; }
.nav-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.4); backdrop-filter: blur(4px); }
.nav-content {
  position: fixed; top: 0; right: 0;
  width: 300px; height: 100vh;
  background: var(--bg-white);
  padding: 24px;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
  box-shadow: -4px 0 20px rgba(0,0,0,0.1);
}
.nav-drawer.open .nav-content { transform: translateX(0); }
.nav-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; }
.nav-logo { font-size: 18px; font-weight: 700; color: var(--text); }
.nav-close { background: none; border: none; color: var(--text-muted); font-size: 28px; cursor: pointer; }
.nav-list { list-style: none; }
.nav-list li { margin-bottom: 8px; }
.nav-link {
  display: block; padding: 14px 18px;
  color: var(--text-secondary); text-decoration: none;
  border-radius: var(--radius-sm); font-size: 15px; font-weight: 500;
  transition: all 0.2s;
}
.nav-link:hover { background: var(--primary-light); color: var(--primary); }
.nav-link.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }
.nav-footer {
  margin-top: 40px; padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--text-muted); font-size: 13px;
}

/* ===== Hero ===== */
.hero {
  position: relative; padding: 80px 24px 56px;
  background: linear-gradient(135deg, #0d47a1 0%, #1a73e8 30%, #6366f1 70%, #07c160 100%);
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.12) 0%, transparent 50%),
              radial-gradient(circle at 80% 30%, rgba(255,255,255,0.08) 0%, transparent 40%),
              radial-gradient(circle at 50% 80%, rgba(7,193,96,0.15) 0%, transparent 40%);
}
/* Decorative floating dots */
.hero-dots {
  position: absolute; inset: 0; overflow: hidden;
}
.hero-dot {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,0.08);
  animation: floatDot 6s ease-in-out infinite;
}
.hero-dot:nth-child(1) { width: 120px; height: 120px; top: 10%; left: 5%; animation-delay: 0s; }
.hero-dot:nth-child(2) { width: 80px; height: 80px; top: 60%; right: 10%; animation-delay: 2s; }
.hero-dot:nth-child(3) { width: 60px; height: 60px; bottom: 20%; left: 30%; animation-delay: 4s; }
.hero-dot:nth-child(4) { width: 40px; height: 40px; top: 30%; right: 30%; animation-delay: 1s; }
.hero-dot:nth-child(5) { width: 100px; height: 100px; bottom: 10%; right: 5%; animation-delay: 3s; }
@keyframes floatDot {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.6; }
  50% { transform: translateY(-20px) scale(1.1); opacity: 0.9; }
}
.hero-content { position: relative; max-width: 800px; margin: 0 auto; text-align: center; }
.hero h2 {
  font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 12px;
  letter-spacing: 1px;
}
.hero-desc { font-size: 16px; color: rgba(255,255,255,0.85); margin-bottom: 32px; }
.hero-badge {
  display: inline-block; background: rgba(255,255,255,0.18);
  padding: 8px 20px; border-radius: 24px;
  color: #fff; font-size: 14px; margin-bottom: 20px;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.2);
  letter-spacing: 0.5px;
}

/* Search Bar */
.search-bar {
  display: flex; align-items: center;
  background: rgba(255,255,255,0.95);
  border-radius: var(--radius-xl); padding: 0 20px;
  max-width: 520px; margin: 0 auto;
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
  transition: box-shadow 0.3s;
  border: 1px solid rgba(255,255,255,0.3);
}
.search-bar:focus-within { box-shadow: 0 12px 40px rgba(0,0,0,0.2); }
.search-icon { color: var(--text-muted); }
.search-bar input {
  flex: 1; background: none; border: none;
  color: var(--text); font-size: 15px; padding: 16px 12px;
  outline: none;
}
.search-bar input::placeholder { color: var(--text-muted); }
.search-clear {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; font-size: 18px; padding: 4px;
  display: none;
}
.search-clear.visible { display: block; }

/* ===== Tags Section ===== */
.tags-section {
  padding: 16px 24px 0;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
}
.tags-wrap {
  display: flex; gap: 10px; flex-wrap: wrap;
  max-width: 1200px; margin: 0 auto;
  padding-bottom: 16px;
}
.tag-btn {
  background: var(--bg-light);
  border: 1px solid var(--border);
  color: var(--text-secondary); padding: 8px 18px;
  border-radius: 24px; font-size: 14px; font-weight: 500;
  cursor: pointer; transition: all 0.25s;
  white-space: nowrap;
}
.tag-btn:hover {
  background: var(--primary-light); border-color: var(--primary);
  color: var(--primary); transform: translateY(-1px);
}
.tag-btn.active {
  background: var(--primary-gradient); border-color: transparent;
  color: #fff; box-shadow: 0 4px 12px rgba(26,115,232,0.25);
}

/* ===== Stats Bar ===== */
.stats-bar {
  display: flex; gap: 32px; justify-content: center;
  padding: 20px 24px;
  max-width: 1200px; margin: 0 auto;
  color: var(--text-secondary); font-size: 15px;
}
.stat-item { display: flex; align-items: center; gap: 6px; }
.stat-num {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--primary-gradient); color: #fff;
  font-size: 13px; font-weight: 700; padding: 3px 10px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(26,115,232,0.2);
}

/* ===== Card Wall ===== */
.cardwall { padding: 24px; max-width: 1200px; margin: 0 auto; }
.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

/* ===== Member Card — Premium Edition ===== */
.member-card {
  background: var(--bg-white);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--radius-xl); padding: 0;
  cursor: pointer; transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
  position: relative; overflow: hidden;
  box-shadow: var(--shadow-card);
}
.member-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-6px);
  border-color: rgba(26,115,232,0.2);
}

/* Card gradient header strip */
.card-header-strip {
  height: 56px;
  background: var(--card-gradient, var(--primary-gradient));
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: 14px 20px 0;
  position: relative;
  overflow: hidden;
}
.card-header-strip::after {
  content: ''; position: absolute; top: -30px; right: -30px;
  width: 80px; height: 80px; border-radius: 50%;
  background: rgba(255,255,255,0.1);
}
.card-category-badge {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  color: #fff; padding: 4px 12px;
  border-radius: 20px; font-size: 12px; font-weight: 600;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.25);
  letter-spacing: 0.5px;
}
.card-header-icon {
  width: 28px; height: 28px;
  background: rgba(255,255,255,0.15);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px;
  backdrop-filter: blur(4px);
}

/* Card body */
.card-body { padding: 20px 24px 24px; }
.card-tags { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.card-tag {
  background: var(--primary-light); color: var(--primary);
  padding: 5px 12px; border-radius: 8px; font-size: 12px; font-weight: 500;
  border: 1px solid rgba(26,115,232,0.1);
}
.card-name { font-size: 20px; font-weight: 800; color: var(--text); margin-bottom: 8px; letter-spacing: 0.5px; }
.card-tagline {
  font-size: 15px; color: var(--card-color, var(--primary));
  margin-bottom: 14px; font-weight: 500;
  position: relative;
  padding-left: 12px;
}
.card-tagline::before {
  content: ''; position: absolute; left: 0; top: 4px;
  width: 4px; height: 16px; border-radius: 2px;
  background: var(--card-color, var(--primary));
}
.card-desc { font-size: 14px; color: var(--text-secondary); margin-bottom: 18px; line-height: 1.7; }
.card-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.card-leader { display: flex; align-items: center; gap: 10px; min-width: 0; flex: 1; }
.card-leader-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--card-gradient, var(--primary-gradient));
  color: #fff; font-size: 13px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(26,115,232,0.15);
  flex-shrink: 0;
}
.card-leader-name { font-size: 14px; color: var(--text); font-weight: 600; white-space: nowrap; flex-shrink: 0; }
.card-leader-tag { font-size: 13px; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card-arrow {
  font-size: 13px; font-weight: 600; color: var(--primary);
  display: flex; align-items: center; gap: 4px;
  transition: gap 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
}
.card-arrow-icon { display: inline-block; transition: transform 0.2s; }
.member-card:hover .card-arrow { gap: 8px; }
.member-card:hover .card-arrow-icon { transform: translateX(2px); }

/* ===== Empty State ===== */
.empty-state {
  text-align: center; padding: 60px 24px; color: var(--text-muted);
}
.btn-reset {
  background: var(--primary-gradient); border: none;
  color: #fff; padding: 12px 28px;
  border-radius: 24px; cursor: pointer;
  margin-top: 16px; font-size: 14px; font-weight: 500;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(26,115,232,0.2);
}
.btn-reset:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(26,115,232,0.3); }

/* ===== Section Header ===== */
.section-header {
  max-width: 1200px; margin: 0 auto;
  padding: 48px 24px 24px;
}
.section-header h2 {
  font-size: 28px; font-weight: 800; color: var(--text);
  position: relative; padding-left: 16px;
}
.section-header h2::before {
  content: ''; position: absolute; left: 0; top: 2px;
  width: 6px; height: 28px; border-radius: 3px;
  background: var(--primary-gradient);
}
.section-sub { font-size: 15px; color: var(--text-secondary); margin-top: 6px; padding-left: 16px; }

/* ===== Weekly Section ===== */
.weekly-section {
  padding: 0 24px 48px;
  background: linear-gradient(180deg, var(--bg-section) 0%, #fff 100%);
}
.weekly-section .section-header { margin-bottom: 24px; }
.weekly-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.weekly-card {
  background: var(--bg-white);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--radius-xl);
  padding: 0;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}
.weekly-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); }
.weekly-card-header {
  height: 48px;
  background: linear-gradient(135deg, var(--primary), #6366f1);
  display: flex; align-items: center; padding: 0 20px;
  gap: 8px;
}
.weekly-badge {
  background: rgba(255,255,255,0.2);
  color: #fff; padding: 4px 12px;
  border-radius: 20px; font-size: 12px; font-weight: 600;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.2);
}
.weekly-card-body { padding: 20px 24px; }
.weekly-category { font-size: 13px; color: var(--primary); font-weight: 600; margin-bottom: 8px; }
.weekly-name { font-size: 18px; font-weight: 800; color: var(--text); margin-bottom: 6px; }
.weekly-tagline { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.weekly-arrow {
  margin-top: 16px; font-size: 13px; color: var(--primary); font-weight: 600;
  display: flex; align-items: center; gap: 4px;
  transition: gap 0.2s;
  white-space: nowrap;
}
.weekly-arrow-icon { display: inline-block; transition: transform 0.2s; }
.weekly-card:hover .weekly-arrow { gap: 8px; }
.weekly-card:hover .weekly-arrow-icon { transform: translateX(2px); }

/* ===== Load More ===== */
.load-more-wrap { text-align: center; padding: 32px 0 8px; }
.load-more-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 36px;
  background: var(--bg-white);
  color: var(--primary);
  border: 2px solid var(--primary);
  border-radius: 28px;
  font-size: 15px; font-weight: 600;
  cursor: pointer;
  transition: all 0.25s;
  box-shadow: 0 2px 8px rgba(26,115,232,0.1);
}
.load-more-btn:hover {
  background: var(--primary-gradient); color: #fff; border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(26,115,232,0.25);
}

/* ===== About Section ===== */
.about-section { padding: 0 24px 32px; }
.about-content { max-width: 1200px; margin: 0 auto; }
.about-card {
  background: var(--bg-white);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--radius-xl); padding: 36px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-card);
}
.about-card h3 {
  font-size: 22px; font-weight: 800; color: var(--text); margin-bottom: 16px;
  position: relative; padding-left: 16px;
}
.about-card h3::before {
  content: ''; position: absolute; left: 0; top: 2px;
  width: 6px; height: 22px; border-radius: 3px;
  background: var(--primary-gradient);
}
.about-card p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; }
.about-values { margin-top: 24px; display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.value-item {
  padding: 20px; background: var(--bg-light); border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.value-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.value-icon { font-size: 28px; }
.value-label { font-size: 16px; font-weight: 700; color: var(--text); }
.value-desc { font-size: 13px; color: var(--text-secondary); margin-top: 6px; }

/* ===== Join Section ===== */
.join-section { padding: 0 24px 48px; background: var(--bg-section); }
.join-content { max-width: 1200px; margin: 0 auto; }
.join-card {
  background: var(--bg-white);
  border-radius: var(--radius-xl); padding: 36px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(0,0,0,0.06);
}
.join-card p { font-size: 15px; color: var(--text-secondary); margin-bottom: 20px; }
.join-steps { list-style: none; padding: 0; margin-bottom: 24px; }
.join-steps li {
  padding: 14px 0; font-size: 15px; color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
  transition: all 0.2s;
}
.join-steps li:hover { color: var(--text); }
.join-steps li:last-child { border-bottom: none; }
.join-steps .step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--primary-gradient); color: #fff; font-size: 14px; font-weight: 700;
  box-shadow: 0 4px 12px rgba(26,115,232,0.2);
}

/* ===== Detail Modal — Premium ===== */
.detail-modal { position: fixed; inset: 0; z-index: 300; display: none; }
.detail-modal.open { display: flex; }
.detail-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); backdrop-filter: blur(6px); }
.detail-content {
  position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--bg-white);
  overflow-y: auto;
  max-height: 90vh;
  max-width: 640px;
  margin: 0 auto;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  animation: slideUp 0.35s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 -8px 40px rgba(0,0,0,0.15);
}
@keyframes slideUp { from { transform: translateY(60px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.detail-header {
  position: sticky; top: 0;
  background: var(--bg-white);
  padding: 16px 24px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border);
  z-index: 1;
}
.detail-close {
  background: var(--bg-light); border: 1px solid var(--border);
  color: var(--text-secondary); border-radius: 50%;
  width: 36px; height: 36px; font-size: 18px;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.detail-close:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
.detail-title { font-size: 18px; font-weight: 700; color: var(--text); }

.detail-body { padding: 0; }

/* Detail hero banner */
.detail-hero-banner {
  height: 80px;
  background: var(--card-gradient, var(--primary-gradient));
  position: relative;
  display: flex; align-items: center; padding: 0 24px;
}
.detail-hero-banner::after {
  content: ''; position: absolute; top: -40px; right: -40px;
  width: 120px; height: 120px; border-radius: 50%;
  background: rgba(255,255,255,0.1);
}
.detail-hero-category {
  background: rgba(255,255,255,0.2); color: #fff;
  padding: 6px 16px; border-radius: 20px; font-size: 14px; font-weight: 600;
  backdrop-filter: blur(4px); border: 1px solid rgba(255,255,255,0.25);
}

.detail-info { padding: 24px; }
.detail-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }
.detail-tag {
  background: var(--primary-light); color: var(--primary);
  padding: 6px 14px; border-radius: 10px; font-size: 13px; font-weight: 500;
  border: 1px solid rgba(26,115,232,0.1);
}
.detail-name { font-size: 28px; font-weight: 800; color: var(--text); margin-bottom: 8px; }
.detail-tagline { font-size: 18px; color: var(--primary); font-weight: 500; margin-bottom: 24px; }

.detail-section { margin-bottom: 24px; }
.detail-section-title {
  font-size: 14px; color: var(--text-muted); font-weight: 600;
  text-transform: uppercase; letter-spacing: 1px;
  padding-bottom: 10px; margin-bottom: 14px;
  position: relative;
}
.detail-section-title::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 40px; height: 3px; border-radius: 1.5px;
  background: var(--primary-gradient);
}
.detail-section p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; }

.detail-leader-row { display: flex; align-items: center; gap: 12px; }
.detail-leader-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--primary-gradient);
  color: #fff; font-size: 16px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(26,115,232,0.2);
}
.detail-leader-name { font-size: 18px; font-weight: 600; color: var(--text); }
.detail-leader-tag { font-size: 15px; color: var(--text-secondary); }

/* ===== Footer ===== */
.footer {
  background: linear-gradient(180deg, var(--bg-white) 0%, #f5f7fa 100%);
  border-top: 1px solid var(--border);
  padding: 40px 24px;
}
.footer-inner {
  max-width: 1200px; margin: 0 auto; text-align: center;
}
.footer p { font-size: 14px; color: var(--text-secondary); margin-bottom: 4px; }
.footer-copy { font-size: 12px; color: var(--text-muted); margin-top: 8px; }

/* ===== Responsive ===== */
@media (max-width: 639px) {
  .hero { padding: 48px 16px 36px; }
  .hero h2 { font-size: 22px; }
  .hero-desc { font-size: 14px; }
  .hero-badge { font-size: 12px; }
  .cards-grid { grid-template-columns: 1fr; gap: 16px; max-width: 100%; }
  .weekly-grid { grid-template-columns: 1fr; gap: 16px; }
  .card-header-strip { height: 44px; padding: 10px 16px 0; }
  .card-body { padding: 16px 20px 20px; }
  .card-name { font-size: 17px; }
  .detail-hero-banner { height: 60px; }
  .detail-name { font-size: 22px; }
  .detail-tagline { font-size: 15px; }
  .stats-bar { gap: 16px; font-size: 13px; }
  .section-header h2 { font-size: 22px; }
  .about-values { grid-template-columns: 1fr; }
  .search-bar { margin: 0 8px; }
  .header-inner { padding: 12px 16px; }
  .tags-section { padding: 12px 16px 0; }
  .tags-wrap { gap: 6px; }
  .tag-btn { padding: 6px 12px; font-size: 13px; }
  .cardwall { padding: 16px; }
  .weekly-section, .about-section, .join-section { padding-left: 16px; padding-right: 16px; }
  .weekly-card-body { padding: 16px 20px; }
  .weekly-name { font-size: 16px; }
  .card-leader-tag { display: none; }  /* 窄屏隐藏企业标签，避免挤换行 */
  .card-arrow-text { display: none; }  /* 窄屏只留箭头，省空间 */
  .about-card { padding: 24px; }
  .join-card { padding: 24px; }
}

@media (min-width: 640px) and (max-width: 1023px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 880px; }
  .weekly-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .about-values { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .cards-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 1200px; }
  .weekly-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 1200px; }
  .about-values { grid-template-columns: repeat(3, 1fr); }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #c1c9d4; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #a1adb8; }

/* ===== Loading ===== */
.loading { text-align: center; padding: 48px; color: var(--text-muted); }
.loading-spinner {
  display: inline-block; width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.member-card { animation: fadeInUp 0.5s cubic-bezier(0.4,0,0.2,1) both; }
.member-card:nth-child(1) { animation-delay: 0.05s; }
.member-card:nth-child(2) { animation-delay: 0.1s; }
.member-card:nth-child(3) { animation-delay: 0.15s; }
.member-card:nth-child(4) { animation-delay: 0.2s; }
.member-card:nth-child(5) { animation-delay: 0.25s; }
.member-card:nth-child(6) { animation-delay: 0.3s; }