:root {
  --bg: radial-gradient(
      circle at 20% 20%,
      rgba(255, 255, 255, 0.08),
      transparent 25%
    ),
    radial-gradient(
      circle at 80% 10%,
      rgba(255, 255, 255, 0.06),
      transparent 24%
    ),
    radial-gradient(
      circle at 50% 80%,
      rgba(255, 255, 255, 0.08),
      transparent 28%
    ),
    linear-gradient(135deg, #0c1027 0%, #1b2550 50%, #0b0f21 100%);
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --text: #eef1ff;
  --muted: #b9c1e0;
  --primary: #ffb01b;
  --primary-dark: #e49a00;
  --card-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui,
    -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
  border-radius: 12px;
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 20px 80px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  line-height: 1.2;
}

p {
  margin: 0;
  color: var(--muted);
}

.hero {
  display: grid;
  gap: 28px;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  padding: 44px;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
}

.hero__copy h1 {
  font-size: clamp(28px, 3vw, 36px);
  margin: 12px 0 10px;
}

.lead {
  font-size: 16px;
}

.hero__cta {
  display: flex;
  gap: 12px;
  margin: 18px 0 12px;
}

.pill-list {
  display: flex;
  gap: 10px;
  padding: 0;
  list-style: none;
}

.pill-list li {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--surface-strong);
  color: var(--text);
  font-size: 13px;
}

.hero__highlight {
  background: linear-gradient(
    145deg,
    rgba(255, 176, 27, 0.15),
    rgba(255, 255, 255, 0.03)
  );
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--card-shadow);
}

.hero__highlight h2 {
  font-size: 22px;
  margin-bottom: 14px;
}

.highlight__list {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  color: var(--muted);
}

.badge {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-size: 13px;
  letter-spacing: 0.5px;
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 15px;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
  color: var(--text);
  background: var(--surface-strong);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #1a1a1a;
  box-shadow: 0 12px 30px rgba(255, 176, 27, 0.4);
}

.btn-primary:hover {
  box-shadow: 0 14px 40px rgba(255, 176, 27, 0.5);
}

.btn-secondary {
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.btn-light {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
}

.btn-inline,
.btn-ghost {
  width: max-content;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  font-size: 14px;
}

.btn-inline:hover,
.btn-ghost:hover,
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.section {
  margin-top: 46px;
}

.section__title {
  margin-bottom: 16px;
}

.section__title h3 {
  font-size: 20px;
}

.card-grid,
.app-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card,
.app-card {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--card-shadow);
}

.card__logo {
  width: 280px;
  height: 110px;
  object-fit: contain;
  margin-bottom: 10px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 1);
  padding: 8px;
}

.card__tag {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  margin-bottom: 12px;
  font-weight: 600;
}

.card h4 {
  font-size: 17px;
  margin-bottom: 8px;
}

.app-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: center;
  gap: 14px;
}

.app-card__body h5 {
  margin: 0 0 6px;
  font-size: 16px;
}

.app-card__body p {
  margin-bottom: 10px;
}

.guide {
  margin-top: 48px;
  padding: 22px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.guide h3 {
  margin-bottom: 12px;
}

.guide ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.guide code {
  background: rgba(255, 255, 255, 0.08);
  padding: 3px 6px;
  border-radius: 6px;
  color: var(--text);
}

.footer {
  margin-top: 36px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 28px;
  }

  .hero__cta {
    flex-wrap: wrap;
  }

  .app-card {
    grid-template-columns: 1fr;
  }
}

.scroll-hint {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
  color: var(--text);
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(6px);
  cursor: pointer;
  z-index: 1200;
  transition: transform 300ms ease, opacity 300ms ease, visibility 300ms;
}

.scroll-hint.hidden {
  opacity: 0;
  transform: translateX(-50%) translateY(12px) scale(0.98);
  visibility: hidden;
  pointer-events: none;
}

.scroll-hint .hint-text {
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
}

.scroll-hint .arrow {
  width: 26px;
  height: 26px;
  display: inline-grid;
  place-items: center;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 176, 27, 0.12), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
  animation: float 1400ms ease-in-out infinite;
}

.scroll-hint .arrow svg {
  display: block;
  width: 14px;
  height: 14px;
  fill: none;
  stroke: var(--primary);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@keyframes float {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(6px);
  }
  100% {
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-hint .arrow {
    animation: none;
  }
}

@media (min-width: 961px) {
  .scroll-hint {
    display: none !important;
  }
}

@media (max-width: 480px) {
  .scroll-hint {
    bottom: 18px;
    padding: 8px 12px;
    gap: 6px;
  }

  .scroll-hint .hint-text {
    font-size: 12px;
  }
}