:root {
  --bg: #ffffff;
  --text: #1f2430;
  --text-2: #5f6672;
  --text-3: #9aa1ad;
  --border: #e8eaee;
  --shadow: 0 10px 30px rgba(17, 24, 39, 0.06);
}

.truda { --c-accent: #7c3aed; --c-accent-2: #a78bfa; --c-tint: rgba(124, 58, 237, 0.12); }
.mimi  { --c-accent: #ec4899; --c-accent-2: #f472b6; --c-tint: rgba(236, 72, 153, 0.12); }
.amber { --c-accent: #f59e0b; --c-accent-2: #fbbf24; --c-tint: rgba(245, 158, 11, 0.12); }

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--c-accent, #2563eb);
  outline-offset: 2px;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 16px;
  min-height: 64px;
  padding-top: 8px;
  padding-bottom: 8px;
}

.brand { display: flex; align-items: center; }

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.nav { display: flex; flex-wrap: wrap; gap: 2px; }

.nav-item { position: relative; }

.nav-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  font: inherit;
  font-size: 15px;
  color: var(--text);
  transition: background-color 0.15s ease;
}

.nav-trigger:hover { background: var(--c-tint); }

.nav-trigger .caret { transition: transform 0.15s ease; }
.nav-item:hover .caret,
.nav-item:focus-within .caret,
.nav-item.open .caret { transform: rotate(180deg); }

.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  min-width: 148px;
  padding: 6px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(17, 24, 39, 0.10);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 6px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
}

.nav-item:hover .dropdown,
.nav-item:focus-within .dropdown,
.nav-item.open .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.dropdown a {
  display: block;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  color: #3d434d;
  white-space: nowrap;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.dropdown a:hover { background: var(--c-tint); color: var(--c-accent); }

.hero {
  padding: 96px 24px 88px;
  text-align: center;
  background:
    radial-gradient(ellipse 55% 75% at 12% 0%, rgba(167, 139, 250, 0.18), transparent 70%),
    radial-gradient(ellipse 55% 75% at 88% 8%, rgba(244, 114, 182, 0.18), transparent 70%),
    radial-gradient(ellipse 70% 75% at 50% 115%, rgba(251, 191, 36, 0.16), transparent 70%);
}

.hero h1 {
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.hero .grad {
  background: linear-gradient(90deg, #7c3aed, #ec4899 55%, #f59e0b);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  max-width: 600px;
  margin: 18px auto 0;
  font-size: 17px;
  color: var(--text-2);
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.chip {
  padding: 7px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-accent);
  background: var(--c-tint);
  border: 1px solid transparent;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.chip:hover { border-color: var(--c-accent); transform: translateY(-1px); }

.apps {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding: 0 24px 96px;
}

.app-card {
  display: flex;
  align-items: center;
  gap: 56px;
  padding: 44px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.app-card::after {
  content: "";
  position: absolute;
  top: -90px;
  right: -90px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--c-tint), transparent 70%);
  pointer-events: none;
}

.app-card.reverse { flex-direction: row-reverse; }

.app-shot { position: relative; flex: 0 0 232px; }

.app-shot::before {
  content: "";
  position: absolute;
  inset: -16px;
  border-radius: 48px;
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
  opacity: 0.22;
  filter: blur(24px);
}

.app-shot img {
  position: relative;
  width: 232px;
  height: auto;
  border-radius: 28px;
  box-shadow: 0 16px 40px rgba(17, 24, 39, 0.14);
}

.app-title { display: flex; align-items: center; gap: 12px; }

.app-icon {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
  color: #fff;
  font-size: 21px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(17, 24, 39, 0.18);
  flex: none;
}

.app-info h2 { font-size: 26px; letter-spacing: -0.01em; }

.app-info p {
  max-width: 52ch;
  margin: 12px 0 24px;
  color: var(--text-2);
}

.app-links { display: flex; flex-wrap: wrap; gap: 10px; }

.btn {
  display: inline-flex;
  align-items: center;
  padding: 9px 20px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  transition: border-color 0.15s ease, color 0.15s ease,
    transform 0.15s ease, filter 0.15s ease;
}

.btn:hover { border-color: var(--c-accent); color: var(--c-accent); transform: translateY(-1px); }

.btn--primary {
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 20px var(--c-tint);
}

.btn--primary:hover { color: #fff; filter: brightness(1.06); }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 36px 0;
  text-align: center;
  font-size: 14px;
  color: var(--text-2);
}

.site-footer a { color: #2563eb; }
.site-footer a:hover { text-decoration: underline; }

.copyright { margin-top: 6px; color: var(--text-3); }

@media (max-width: 860px) {
  .hero { padding: 64px 24px 64px; }

  .app-card,
  .app-card.reverse {
    flex-direction: column;
    gap: 32px;
    text-align: center;
    padding: 32px 24px;
  }

  .app-shot { flex: 0 0 auto; }
  .app-title { justify-content: center; }
  .app-info p { margin-left: auto; margin-right: auto; }
  .app-links { justify-content: center; }
}