:root {
  --bg: #e9fdff;
  --card: #ffffff;
  --text: #0b0b0e;
  --muted: #5f6368;
  --accent: #1e8de3; /* darker blue for buttons and highlight */
  --accent-contrast: #083052;
  --shadow: 0 10px 30px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 18px 56px;
  gap: 24px;
}

.tips-card {
  width: auto;
  max-width: 680px;
  background: var(--card);
  border-radius: 22px;
  box-shadow: 0 16px 50px rgba(0,0,0,0.18); /* stronger shadow */
  padding: 18px 18px;
  position: fixed; /* stick to screen */
  top: 22px;
  right: 16px;
  left: 16px; /* keep inside viewport on mobile */
  z-index: 10;
}

.tips-card::after {
  /* arrow pointing toward top-right corner */
  content: "";
  position: absolute;
  top: -8px;
  right: 24px;
  width: 16px;
  height: 16px;
  background: var(--card);
  transform: rotate(45deg);
  border-radius: 3px;
  box-shadow: -2px -2px 8px rgba(0,0,0,0.08);
}

.tips-content { display: block; }

/* removed square app glyph */

.tips-text {
  margin: 0;
  font-size: 17px; /* slightly smaller for compact fit */
  line-height: 1.5;
  color: var(--muted);
}

.highlight { color: var(--accent); font-weight: 700; }

.icon-inline {
  height: 1.6em;
  width: 1.6em;
  vertical-align: middle; /* align with text */
  position: relative;
  top: 3px; /* slightly lower */
}
.icon-inline.tiktok { height: 1.7em; width: 1.7em; top: 3px; }
.icon-inline.triple { height: 2.8em; width: 2.8em; top: 6px; }

.app-icon {
  width: 200px;
  height: 200px;
  border-radius: 22px;
  background: transparent;
  box-shadow: none; /* avoid border-shadow box */
  filter: drop-shadow(0 16px 40px rgba(0,0,0,0.12)); /* shadow around logo shape only */
}

.title {
  text-align: center;
  margin: 0;
  font-weight: 600;
  font-size: 34px;
  letter-spacing: -0.02em;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 220px;
  height: 54px;
  padding: 0 22px;
  border-radius: 28px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  box-shadow: var(--shadow);
  transition: transform .06s ease, filter .2s ease;
}

.button:active { transform: translateY(1px); }
.button:hover { filter: brightness(1.03); }

.alt-links {
  display: flex;
  gap: 18px;
}

.alt-links a { color: var(--muted); text-decoration: underline; }

.footer-note {
  margin: 0;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

@media (max-width: 420px) {
  .title { font-size: 28px; }
  .tips-text { font-size: 16px; }
  .icon-inline { height: 1.4em; width: 1.4em; top: 2px; }
  .icon-inline.tiktok { height: 1.5em; width: 1.5em; top: 2px; }
  .icon-inline.triple { height: 2.4em; width: 2.4em; top: 4px; }
  .tips-card { left: 12px; right: 12px; top: 14px; }
  .tips-card::after { right: 20px; top: -7px; width: 14px; height: 14px; }
}