:root {
  --jian-blue-600: #1e40af;
  --jian-blue-500: #2563eb;
  --jian-blue-400: #3b82f6;
  --jian-blue-300: #60a5fa;
  --jian-cyan-500: #06b6d4;
  --jian-cyan-400: #22d3ee;
  --jian-bg-dark: #0f172a;
  --jian-bg-card: #1e293b;
  --jian-bg-input: #334155;
  --jian-white: #f8fafc;
  --jian-gray-300: #cbd5e1;
  --jian-gray-400: #94a3b8;
  --jian-gray-500: #64748b;
}

* {
  box-sizing: border-box;
}

body.jian-body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--jian-white);
  background: var(--jian-bg-dark);
  background-image: 
    radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
  min-height: 100vh;
  padding-bottom: calc(46px + env(safe-area-inset-bottom));
}

.jian-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px;
}

.jian-bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  padding: 0 0 env(safe-area-inset-bottom);
  background: rgba(15, 23, 42, 0.95);
  border-top: 1px solid rgba(37, 99, 235, 0.3);
  backdrop-filter: blur(12px);
}

.jian-bottom-nav-inner {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.jian-bottom-link {
  height: 46px;
  border-radius: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  color: var(--jian-gray-400);
  background: rgba(255, 255, 255, 0.03);
  border: none;
  border-right: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
}

.jian-bottom-link:hover {
  color: var(--jian-white);
}

.jian-bottom-link.active {
  color: var(--jian-white);
  border-color: transparent;
  background: linear-gradient(135deg, var(--jian-blue-500), var(--jian-cyan-500));
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.5);
}

.jian-bottom-link:last-child {
  border-right: none;
}

.jian-panel {
  background: var(--jian-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  border-radius: 16px;
}

.jian-header {
  background: linear-gradient(135deg, var(--jian-blue-600), var(--jian-blue-500), var(--jian-cyan-500));
  color: var(--jian-white);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 8px 32px rgba(37, 99, 235, 0.4);
  position: relative;
  overflow: hidden;
}

.jian-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
  transform: translateX(-100%);
  animation: headerShine 3s ease-in-out infinite;
}

@keyframes headerShine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.jian-title {
  letter-spacing: 0.02em;
  font-weight: 800;
  position: relative;
  z-index: 1;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.jian-ellipsis-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.jian-subtitle {
  color: rgba(255, 255, 255, 0.8);
  font-size: 13px;
  position: relative;
  z-index: 1;
}

.jian-input {
  width: 100%;
  border: 1px solid var(--jian-bg-input);
  border-radius: 10px;
  background: var(--jian-bg-input);
  padding: 10px 14px;
  transition: all 0.3s ease;
  color: var(--jian-white);
}

.jian-input::placeholder {
  color: var(--jian-gray-500);
}

.jian-input:focus {
  outline: none;
  border-color: var(--jian-blue-400);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
  background: var(--jian-bg-card);
}

.jian-btn {
  border: none;
  cursor: pointer;
  border-radius: 10px;
  height: 42px;
  min-width: 110px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.jian-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.jian-btn-primary {
  background: linear-gradient(135deg, var(--jian-blue-500), var(--jian-blue-400));
  color: var(--jian-white);
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.jian-btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.jian-btn-gold {
  background: linear-gradient(135deg, var(--jian-cyan-500), var(--jian-cyan-400));
  color: var(--jian-bg-dark);
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

.jian-btn-gold:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

.jian-btn-soft {
  background: rgba(255, 255, 255, 0.1);
  color: var(--jian-gray-300);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.jian-btn-soft:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.2);
}

.jian-chip {
  border-radius: 9999px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--jian-gray-300);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.jian-chip:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--jian-white);
}

.jian-chip.active {
  color: var(--jian-white);
  border-color: transparent;
  background: linear-gradient(135deg, var(--jian-blue-500), var(--jian-cyan-500));
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

.jian-coupon-card {
  background: var(--jian-bg-card);
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
  animation: riseIn 0.35s ease both;
}

.jian-coupon-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3), 0 0 20px rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.3);
}

.jian-tag {
  display: inline-block;
  border-radius: 999px;
  font-size: 10px;
  line-height: 1.2;
  padding: 2px 8px;
  color: var(--jian-cyan-400);
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.jian-price {
  color: var(--jian-cyan-400);
  font-weight: 800;
}

.jian-mask {
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.jian-modal {
  background: var(--jian-bg-card);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(37, 99, 235, 0.15);
}

.jian-section-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--jian-white);
}

.jian-muted {
  color: var(--jian-gray-400);
}

.jian-notice {
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 12px;
  padding: 10px 12px;
  color: var(--jian-gray-300);
}

.jian-notice-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12px;
  line-height: 1.45;
}

.jian-notice-item + .jian-notice-item {
  margin-top: 6px;
}

.jian-notice-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  margin-top: 6px;
  flex: 0 0 auto;
  background: linear-gradient(135deg, var(--jian-blue-400), var(--jian-cyan-400));
  box-shadow: 0 0 8px var(--jian-cyan-400);
}

.jian-grid-form {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 10px;
}

@media (min-width: 768px) {
  body.jian-body {
    padding-bottom: 0;
  }

  .jian-shell {
    padding: 24px;
  }

  .jian-grid-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .jian-notice {
    border-radius: 14px;
    padding: 12px 14px;
  }

  .jian-notice-item {
    font-size: 13px;
  }

  .jian-bottom-nav {
    display: none;
  }
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.jian-gradient-text {
  background: linear-gradient(135deg, var(--jian-blue-400), var(--jian-cyan-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.jian-glow {
  box-shadow: 0 0 40px rgba(37, 99, 235, 0.3), 0 0 80px rgba(37, 99, 235, 0.1);
}