:root {
  --teal: #2ec4a6;
  --teal-deep: #1aa88c;
  --teal-soft: #6ee0c8;
  --text: #1f2937;
  --muted: #9ca3af;
}

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

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Segoe UI", sans-serif;
  background: #fff;
  color: var(--text);
  padding: 40px 20px;
}

.brand {
  font-size: clamp(48px, 8vw, 72px);
  font-weight: 700;
  letter-spacing: 0.5px;
  line-height: 1.1;
  background: linear-gradient(90deg, var(--teal-deep) 0%, var(--teal) 45%, var(--teal-soft) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 28px;
  animation: brand-in .6s ease both;
}

.actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  animation: brand-in .7s .08s ease both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 128px;
  height: 42px;
  padding: 0 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: transform .12s ease, background .15s ease, box-shadow .15s ease, color .15s ease;
  user-select: none;
}

.btn:active { transform: scale(0.98); }

.btn-outline {
  border: 1.5px solid var(--teal);
  color: var(--teal);
  background: transparent;
}
.btn-outline:hover {
  background: rgba(46, 196, 166, 0.08);
}

.btn-solid {
  border: 1.5px solid var(--teal);
  background: var(--teal);
  color: #fff;
  box-shadow: 0 8px 20px rgba(46, 196, 166, 0.25);
}
.btn-solid:hover {
  background: var(--teal-deep);
  border-color: var(--teal-deep);
}

.sub {
  margin-top: 36px;
  font-size: 13px;
  color: var(--muted);
  animation: brand-in .7s .16s ease both;
}

.sub a {
  color: var(--teal);
  text-decoration: none;
}
.sub a:hover { text-decoration: underline; }

@keyframes brand-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}