:root {
  --bg-1: #0c1024;
  --bg-2: #1b1148;
  --bg-3: #08234a;
  --text: #f4f6ff;
  --text-soft: rgba(244, 246, 255, 0.72);
  --text-mute: rgba(244, 246, 255, 0.50);
  --glass-bg: rgba(255, 255, 255, 0.07);
  --glass-bg-hover: rgba(255, 255, 255, 0.12);
  --glass-border: rgba(255, 255, 255, 0.15);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3),
                  inset 0 1px 0 rgba(255, 255, 255, 0.1);
  --primary: #3b9dff;
  --primary-2: #5ac8fa;
  --primary-glow: 0 6px 20px rgba(59, 157, 255, 0.3);
  --warn: #ffd166;
  --radius: 18px;
}

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

html {
  height: 100%;
}

body {
  min-height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Helvetica Neue", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg-1);
  background:
    radial-gradient(ellipse 80% 60% at 10% 0%, #2a2070 0%, transparent 50%),
    radial-gradient(ellipse 70% 50% at 95% 5%, #0b4ea8 0%, transparent 45%),
    radial-gradient(ellipse 60% 50% at 50% 110%, #007a6e 0%, transparent 50%),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 40%, var(--bg-3) 100%);
  -webkit-font-smoothing: antialiased;
}

.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
  animation: float 20s ease-in-out infinite alternate;
}
.orb-a { width: 500px; height: 500px; top: -200px; left: -150px;
  background: #6c5ce7; }
.orb-b { width: 400px; height: 400px; top: 25%; right: -150px;
  background: #00b3a4; animation-delay: -7s; }
.orb-c { width: 450px; height: 450px; bottom: -200px; left: 35%;
  background: #ff6b9a; animation-delay: -14s; }

@keyframes float {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, -25px) scale(1.05); }
}

.bg-grain {
  position: fixed; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 4px 4px;
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
}

.page {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
}

.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(24px) saturate(150%);
  -webkit-backdrop-filter: blur(24px) saturate(150%);
  box-shadow: var(--glass-shadow);
}

.hero {
  padding: 20px 28px;
}
.hero-badge {
  display: inline-block;
  padding: 4px 14px;
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--text-soft);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 999px;
  margin-bottom: 12px;
}
.hero h1 {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #fff 0%, #c0d4ff 55%, #8ed8ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}
.hero .subtitle {
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.6;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  position: relative;
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(160deg, rgba(255,255,255,0.06) 0%, transparent 40%);
  pointer-events: none;
}
.card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35),
              inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
.card.featured {
  border-color: rgba(100, 180, 255, 0.3);
  background: rgba(255, 255, 255, 0.09);
}
.card-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(255,255,255,0.12), rgba(255,255,255,0.03));
  border: 1px solid rgba(255,255,255,0.12);
  color: #cfe7ff;
}
.card h2 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.3;
}
.card p {
  color: var(--text-soft);
  font-size: 13.5px;
  line-height: 1.55;
}
.card-meta {
  display: flex;
  gap: 8px;
  color: var(--text-mute);
  font-size: 12px;
  margin-top: auto;
  padding-top: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.2);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  color: #fff;
  background: linear-gradient(135deg, rgba(255,255,255,0.12), rgba(255,255,255,0.04));
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn.primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  border-color: rgba(255,255,255,0.3);
  box-shadow: var(--primary-glow);
}
.btn.primary:hover {
  box-shadow: 0 8px 28px rgba(59, 157, 255, 0.45);
}

.ewt-button {
  display: block;
}

.hint {
  display: inline-block;
  font-size: 12px;
  line-height: 1.6;
  padding: 8px 14px;
  border-radius: 10px;
  background: rgba(255, 209, 102, 0.08);
  border: 1px solid rgba(255, 209, 102, 0.25);
  color: #ffe7a8;
}

.tips {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: 18px 24px;
  gap: 24px;
}
.tips .tip strong {
  display: block;
  margin-bottom: 6px;
  color: var(--primary-2);
  font-weight: 600;
  font-size: 13px;
  line-height: 1.3;
}
.tips .tip p {
  color: var(--text-soft);
  font-size: 12.5px;
  line-height: 1.55;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-mute);
  font-size: 11.5px;
  padding: 8px 0 4px;
}
.footer .dot { opacity: .45; }

@media (max-width: 960px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .tips  { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .page { padding: 20px 16px 16px; gap: 16px; }
  .hero { padding: 18px 20px; }
  .hero h1 { font-size: 24px; }
  .cards { grid-template-columns: 1fr; gap: 14px; }
  .card  { padding: 22px 20px; }
  .tips  { grid-template-columns: 1fr; padding: 16px 20px; gap: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .bg-orb { animation: none; }
  .card, .btn { transition: none; }
}