/* 首页 · 极简全屏 */
body.page-home {
  height: 100dvh;
  overflow: hidden;
  background: #f4f7fc;
}

body.page-home .page-main--landing {
  padding: 0;
  margin: 0;
  min-height: 0;
  height: 100dvh;
}

.landing-screen {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: var(--header-height) 1.5rem 0;
  box-sizing: border-box;
  background: linear-gradient(
    168deg,
    #f8fafd 0%,
    #eef3fb 42%,
    #e4ecf9 100%
  );
}

.landing-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(100, 149, 237, 0.14), transparent 70%),
    radial-gradient(ellipse 50% 40% at 100% 100%, rgba(100, 149, 237, 0.08), transparent 60%);
}

.landing-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  animation: landing-in 1s ease both;
}

@keyframes landing-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.landing-eyebrow {
  margin: 0 0 1rem;
  font-family: "Inter", var(--font-sans);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.landing-title {
  margin: 0;
  font-family: "Noto Serif SC", var(--font-display);
  font-size: clamp(2.75rem, 8vw, 4.25rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--color-text);
  min-height: 1.15em;
}

.typewriter-text {
  vertical-align: baseline;
}

.typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  margin-left: 0.06em;
  vertical-align: baseline;
  transform: translateY(0.14em);
  background: var(--color-primary-dark);
  animation: cursor-blink 1s step-end infinite;
}

@keyframes cursor-blink {
  0%,
  49% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .typewriter-cursor {
    animation: none;
    opacity: 1;
  }
}

.landing-inner.is-typing .landing-tagline,
.landing-inner.is-typing .landing-cta {
  opacity: 0;
}

.landing-tagline,
.landing-cta {
  transition: opacity 0.6s ease 0.15s;
}

.landing-inner:not(.is-typing) .landing-tagline,
.landing-inner:not(.is-typing) .landing-cta {
  opacity: 1;
}

.landing-tagline {
  margin: 1.25rem 0 3rem;
  font-family: "Inter", var(--font-sans);
  font-size: 0.95rem;
  font-weight: 300;
  letter-spacing: 0.28em;
  color: var(--color-text-secondary);
}

.landing-cta {
  display: inline-block;
  padding: 0.72rem 2.4rem;
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--color-text);
  background: transparent;
  border: 1px solid rgba(74, 123, 212, 0.45);
  border-radius: 2px;
  transition:
    color 0.25s ease,
    background 0.25s ease,
    border-color 0.25s ease;
}

.landing-cta:hover {
  color: #fff;
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.landing-cta--soon {
  cursor: default;
  opacity: 0.72;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.82rem;
}

.landing-cta--soon:hover {
  color: var(--color-text);
  background: transparent;
  border-color: rgba(74, 123, 212, 0.45);
}

.landing-credit {
  position: absolute;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
  opacity: 0.65;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.landing-credit:hover {
  opacity: 1;
  color: var(--color-primary-dark);
}

/* 首页顶栏 */
body.page-home .site-header {
  background: transparent;
  border-bottom: none;
  backdrop-filter: none;
}

body.page-home .site-header .brand,
body.page-home .site-header .nav-links a,
body.page-home .site-header .btn-ghost {
  color: var(--color-text-secondary);
  font-weight: 400;
}

body.page-home .site-header .brand-logo {
  box-sizing: border-box;
  padding: 3px;
  background: transparent;
  border: 1px solid rgba(100, 149, 237, 0.35);
  border-radius: var(--radius-sm);
  box-shadow: none;
}

body.page-home .site-header .btn-primary {
  background: var(--color-primary-ghost);
  color: var(--color-primary-dark);
  border: none;
  box-shadow: none;
  font-weight: 500;
  letter-spacing: 0.02em;
}

body.page-home .site-header .btn-primary:hover {
  background: var(--color-primary-ghost);
  color: var(--color-primary-dark);
}

body.page-home .site-header.scrolled {
  background: rgba(248, 250, 253, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(212, 227, 247, 0.6);
}