/* Hero & Navigation */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 14px var(--space-md);
  transition: padding var(--transition-normal);
}

.navbar__inner {
  max-width: var(--site-max);
  margin: 0 auto;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  border-radius: var(--radius-lg);
  transition:
    background var(--transition-normal),
    backdrop-filter var(--transition-normal),
    box-shadow var(--transition-normal);
}

.navbar.scrolled .navbar__inner {
  background: var(--mp-dock-glass-bg);
  backdrop-filter: blur(var(--mp-dock-blur));
  -webkit-backdrop-filter: blur(var(--mp-dock-blur));
  border: 1px solid var(--mp-dock-glass-border);
  box-shadow: var(--mp-dock-shadow);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.02em;
}

.navbar__logo img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  box-shadow: 0 6px 14px rgba(25, 25, 25, 0.08);
}

.navbar__logo span em {
  font-style: normal;
  font-weight: 500;
  color: var(--text-tertiary);
  font-size: 15px;
}

.navbar__links {
  display: flex;
  gap: var(--space-md);
  font-size: 14px;
  font-weight: 500;
}

.navbar__links a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.navbar__links a:hover {
  color: var(--text-color);
}

.navbar__cta {
  padding: 8px 18px;
  font-size: 14px;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px var(--space-md) var(--space-xl);
  position: relative;
  overflow: hidden;
}

.hero__grid {
  max-width: var(--site-max);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.hero__copy {
  max-width: 34em;
}

.hero__title {
  margin: var(--space-sm) 0 var(--space-md);
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.hero__title .highlight {
  background: linear-gradient(
    135deg,
    var(--text-color) 0%,
    color-mix(in srgb, var(--app-primary) 35%, var(--text-color)) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: var(--space-md);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: var(--space-lg);
}

.hero__note {
  font-size: 13px;
  color: var(--text-tertiary);
}

.hero__device-wrap {
  display: flex;
  justify-content: center;
  perspective: 1200px;
}

.device {
  position: relative;
  width: min(290px, 88vw);
  aspect-ratio: 9 / 19.2;
  padding: 10px;
  border-radius: 46px;
  background: linear-gradient(165deg, #2c2c30 0%, #0f0f11 100%);
  box-shadow:
    0 50px 100px rgba(17, 17, 17, 0.24),
    0 0 0 1px rgba(255, 255, 255, 0.08) inset;
  animation: float 5s ease-in-out infinite;
  transform: rotateY(-8deg) rotateX(4deg);
}

.device::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: 92px;
  height: 28px;
  border-radius: 20px;
  background: #0a0a0b;
  z-index: 3;
}

.device__screen {
  height: 100%;
  border-radius: 38px;
  overflow: hidden;
  background: var(--mp-wallpaper-bg);
  position: relative;
}

.device__status {
  display: flex;
  justify-content: space-between;
  padding: 14px 22px 8px;
  font-size: 11px;
  font-weight: 600;
}

.device__apps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px 8px;
  padding: 16px 18px 0;
}

.app-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.app-tile__icon {
  width: 50px;
  height: 50px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  font-size: 20px;
  border: 1px solid rgba(255, 255, 255, 0.68);
  box-shadow: 0 6px 13px rgba(25, 25, 25, 0.05);
  position: relative;
  overflow: hidden;
}

.app-tile__icon::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.55), transparent 55%);
}

.app-tile__icon--wechat {
  background: linear-gradient(145deg, #fff 0%, #fff7c8 100%);
}
.app-tile__icon--friend {
  background: linear-gradient(145deg, #fff 0%, #fff9dc 100%);
}
.app-tile__icon--char {
  background: linear-gradient(145deg, #fff 0%, #fff4ea 100%);
}
.app-tile__icon--meet {
  background: linear-gradient(145deg, #fff 0%, #fff9d9 100%);
}

.app-tile__label {
  font-size: 10px;
  color: color-mix(in srgb, var(--text-color) 82%, transparent);
}

.device__chat {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 86px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bubble {
  max-width: 82%;
  padding: 10px 14px;
  border-radius: 18px;
  font-size: 13px;
  line-height: 1.45;
}

.bubble--peer {
  align-self: flex-start;
  background: #fff;
  border: 1px solid var(--mp-color-border);
  border-bottom-left-radius: 6px;
}

.bubble--mine {
  align-self: flex-end;
  background: var(--app-primary);
  color: var(--mp-color-on-primary);
  border-bottom-right-radius: 6px;
}

.device__dock {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  display: flex;
  justify-content: center;
  gap: 16px;
  padding: 11px 14px;
  border-radius: 22px;
  background: var(--mp-dock-glass-bg);
  backdrop-filter: blur(var(--mp-dock-blur));
  -webkit-backdrop-filter: blur(var(--mp-dock-blur));
  border: 1px solid var(--mp-dock-glass-border);
  box-shadow: var(--mp-dock-shadow);
}

.dock-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(145deg, #fff 0%, #fff7c8 100%);
  border: 1px solid rgba(255, 255, 255, 0.68);
}

.hero__glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(60px);
}

.hero__glow--1 {
  width: 420px;
  height: 420px;
  top: -8%;
  right: -6%;
  background: rgba(254, 229, 0, 0.14);
}

.hero__glow--2 {
  width: 320px;
  height: 320px;
  bottom: 10%;
  left: -8%;
  background: rgba(94, 23, 129, 0.07);
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--text-tertiary);
}

.hero__scroll svg {
  width: 20px;
  height: 20px;
  animation: bounceDown 2s ease-in-out infinite;
}

/* Philosophy */
.philosophy {
  padding: var(--space-xl) 0;
}

.philosophy__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.philosophy-card {
  padding: 28px 24px;
  border-radius: var(--radius-xl);
  background: color-mix(in srgb, var(--mp-surface-bg) 90%, transparent);
  border: 1px solid var(--mp-color-border);
  box-shadow: var(--mp-card-shadow);
}

.philosophy-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.philosophy-card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

@media (max-width: 900px) {
  .hero__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__copy {
    margin: 0 auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__device-wrap {
    order: -1;
  }

  .device {
    transform: none;
  }

  .philosophy__grid {
    grid-template-columns: 1fr;
  }

  .navbar__links {
    display: none;
  }
}

@media (max-width: 768px) {
  .hero__scroll {
    display: none;
  }
}