/* Homepage — UU Remote landing (blue / orange) */
:root {
  --uu-blue: #2f7bff;
  --uu-blue-deep: #1f63e0;
  --uu-orange: #ff7a18;
  --uu-orange-deep: #ef6a0a;
  --uu-ink: #1a2332;
  --uu-muted: #6b7785;
  --uu-line: #e8eef5;
  --uu-bg: #f5f8fc;
  --uu-sky: #e8f1ff;
  --uu-wrap: min(1180px, calc(100% - 2.5rem));
  --uu-font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body.home {
  font-family: var(--uu-font);
  color: var(--uu-ink);
  background: #fff;
  line-height: 1.6;
  overflow-x: hidden;
}

body.home a {
  color: inherit;
  text-decoration: none;
}

.uu-wrap {
  width: var(--uu-wrap);
  margin-inline: auto;
}

/* Top bar */
.uu-topbar {
  background: linear-gradient(90deg, #eaf2ff, #f3f7ff);
  border-bottom: 1px solid #e4ecf7;
  font-size: 0.78rem;
  color: #5d6b7c;
}

.uu-topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 34px;
}

.uu-topbar-news {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.uu-topbar-news em {
  font-style: normal;
  color: var(--uu-blue);
  font-weight: 700;
}

.uu-topbar-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.uu-topbar-links a:hover {
  color: var(--uu-blue);
}

/* Header */
.uu-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--uu-line);
}

.uu-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 68px;
}

.uu-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.uu-logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(145deg, #4b92ff, #2f7bff);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 0.78rem;
  font-weight: 800;
  box-shadow: 0 8px 18px rgba(47, 123, 255, 0.28);
}

.uu-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.95rem;
  color: #445066;
  font-weight: 500;
}

.uu-nav a:hover {
  color: var(--uu-blue);
}

.uu-btn-orange {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 1.15rem;
  border-radius: 999px;
  background: linear-gradient(180deg, #ff8a2b, var(--uu-orange));
  color: #fff !important;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 8px 18px rgba(255, 122, 24, 0.28);
  transition: transform 0.2s ease, filter 0.2s ease;
}

.uu-btn-orange:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

.uu-menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  cursor: pointer;
  border-radius: 10px;
}

.uu-menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--uu-ink);
}

/* Hero */
.uu-hero {
  position: relative;
  padding: 3.5rem 0 4.25rem;
  background:
    radial-gradient(ellipse 55% 50% at 85% 20%, rgba(47, 123, 255, 0.12), transparent 60%),
    radial-gradient(ellipse 40% 40% at 10% 80%, rgba(120, 180, 255, 0.1), transparent 55%),
    linear-gradient(180deg, #f3f8ff 0%, #fafcff 48%, #ffffff 100%);
  overflow: hidden;
}

.uu-hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
}

.uu-hero h1 {
  font-size: clamp(2rem, 3.8vw, 2.85rem);
  line-height: 1.25;
  letter-spacing: -0.03em;
  font-weight: 800;
  margin-bottom: 1.1rem;
  max-width: 14em;
}

.uu-hero h1 .hl {
  color: var(--uu-orange);
}

.uu-hero-lead {
  color: var(--uu-muted);
  font-size: 0.98rem;
  line-height: 1.75;
  max-width: 34rem;
  margin-bottom: 1.75rem;
}

.uu-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 2rem;
}

.uu-btn-blue {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 52px;
  padding: 0 1.4rem;
  border-radius: 999px;
  background: linear-gradient(180deg, #4b92ff, var(--uu-blue));
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 12px 28px rgba(47, 123, 255, 0.3);
  transition: transform 0.2s ease, filter 0.2s ease;
}

.uu-btn-blue:hover {
  transform: translateY(-2px);
  filter: brightness(1.03);
}

.uu-btn-blue svg {
  width: 18px;
  height: 18px;
}

.uu-btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-height: 52px;
  padding: 0 1.3rem;
  border-radius: 999px;
  background: #fff;
  border: 1px solid #d5e0ef;
  color: #334155;
  font-weight: 600;
  font-size: 0.98rem;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.uu-btn-outline:hover {
  border-color: var(--uu-blue);
  color: var(--uu-blue);
  transform: translateY(-2px);
}

.uu-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  max-width: 28rem;
  padding-top: 0.35rem;
}

.uu-stats strong {
  display: block;
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--uu-blue);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.uu-stats span {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.82rem;
  color: var(--uu-muted);
}

/* Hero visual card */
.uu-visual {
  position: relative;
}

.uu-visual-card {
  position: relative;
  border-radius: 28px;
  padding: 1.15rem;
  background: linear-gradient(160deg, #dcebff 0%, #eef5ff 45%, #f7faff 100%);
  box-shadow: 0 30px 60px rgba(47, 123, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.8);
  animation: uu-float 5.5s ease-in-out infinite;
}

.uu-visual-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.9rem;
}

.uu-visual-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  color: #3b5b8c;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid rgba(47, 123, 255, 0.12);
}

.uu-screen {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  aspect-ratio: 16 / 10.5;
  background:
    radial-gradient(circle at 30% 20%, rgba(255, 180, 80, 0.35), transparent 40%),
    radial-gradient(circle at 70% 70%, rgba(80, 140, 255, 0.45), transparent 45%),
    linear-gradient(145deg, #1a2740 0%, #243556 50%, #152033 100%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.uu-screen-ui {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.uu-game-mock {
  width: min(88%, 360px);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 1rem;
  color: #eef4ff;
  backdrop-filter: blur(6px);
}

.uu-game-mock strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.uu-game-mock p {
  font-size: 0.82rem;
  color: rgba(238, 244, 255, 0.72);
  margin-bottom: 0.85rem;
}

.uu-meter {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
}

.uu-meter > i {
  display: block;
  height: 100%;
  width: 72%;
  border-radius: inherit;
  background: linear-gradient(90deg, #6aa4ff, #ff9a4a);
  animation: uu-meter 2.8s ease-in-out infinite alternate;
}

.uu-side-badges {
  position: absolute;
  right: 1.35rem;
  top: 4.2rem;
  display: grid;
  gap: 0.55rem;
}

.uu-side-badges span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 64px;
  padding: 0.4rem 0.55rem;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.92);
  color: #3d5f96;
  font-size: 0.72rem;
  font-weight: 700;
  box-shadow: 0 8px 18px rgba(30, 64, 120, 0.12);
}

.uu-visual-status {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.9rem;
  color: #4b6488;
  font-size: 0.82rem;
  font-weight: 500;
}

.uu-visual-status .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.18);
}

/* Features */
.uu-features {
  padding: 4.5rem 0 5rem;
  background: #fff;
}

.uu-section-head {
  text-align: center;
  max-width: 40rem;
  margin: 0 auto 2.75rem;
}

.uu-section-head .eyebrow {
  color: var(--uu-blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.7rem;
}

.uu-section-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
  font-weight: 800;
  line-height: 1.3;
}

.uu-feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.15rem;
}

.uu-feature-card {
  padding: 1.45rem 1.25rem 1.55rem;
  border-radius: 18px;
  background: #f7faff;
  border: 1px solid #e8eef8;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.uu-feature-card:hover {
  transform: translateY(-3px);
  border-color: #cfe0ff;
  box-shadow: 0 16px 36px rgba(47, 123, 255, 0.1);
}

.uu-feature-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  background: linear-gradient(145deg, #eaf2ff, #dcebff);
  color: var(--uu-blue);
  font-weight: 800;
  font-size: 0.85rem;
}

.uu-feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.45rem;
  letter-spacing: -0.02em;
}

.uu-feature-card p {
  color: var(--uu-muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

/* News strip */
.uu-news {
  padding: 3.5rem 0 4.5rem;
  background: linear-gradient(180deg, #f7faff, #fff);
  border-top: 1px solid var(--uu-line);
}

.uu-news-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.uu-news-card {
  padding: 1.25rem 1.2rem;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--uu-line);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.uu-news-card:hover {
  border-color: #cfe0ff;
  transform: translateY(-2px);
}

.uu-news-card time {
  display: block;
  color: var(--uu-blue);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 0.45rem;
}

.uu-news-card h3 {
  font-size: 1rem;
  line-height: 1.4;
  margin-bottom: 0.4rem;
}

.uu-news-card p {
  color: var(--uu-muted);
  font-size: 0.88rem;
}

.uu-news-more {
  display: flex;
  justify-content: center;
  margin-top: 1.75rem;
}

/* Footer */
.uu-footer {
  padding: 1.75rem 0 2.1rem;
  border-top: 1px solid var(--uu-line);
  background: #fff;
}

.uu-footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--uu-muted);
  font-size: 0.9rem;
}

.uu-footer-links {
  display: flex;
  gap: 1.15rem;
}

.uu-footer-links a:hover {
  color: var(--uu-blue);
}

@keyframes uu-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes uu-meter {
  from { width: 48%; }
  to { width: 86%; }
}

@media (max-width: 980px) {
  .uu-hero-grid,
  .uu-feature-grid,
  .uu-news-list {
    grid-template-columns: 1fr;
  }

  .uu-side-badges {
    display: none;
  }

  .uu-nav {
    display: none;
    position: absolute;
    top: calc(100% + 0.4rem);
    right: 1.25rem;
    left: 1.25rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.55rem;
    background: #fff;
    border: 1px solid var(--uu-line);
    border-radius: 14px;
    box-shadow: 0 18px 40px rgba(26, 35, 50, 0.12);
  }

  .uu-nav.open {
    display: flex;
  }

  .uu-nav a {
    padding: 0.85rem 0.95rem;
    border-radius: 10px;
  }

  .uu-nav a:hover {
    background: #f3f8ff;
  }

  .uu-btn-orange {
    margin: 0.35rem 0.45rem 0.5rem;
  }

  .uu-menu-toggle {
    display: block;
  }

  .uu-topbar-links {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .uu-visual-card,
  .uu-meter > i {
    animation: none !important;
  }
}