/* Product landing page (FR-LANDING-001~004). Local-only, no external runtime deps. */

:root {
  --landing-ease: cubic-bezier(0.32, 0.72, 0, 1);
  --landing-space: clamp(5rem, 8vw, 7.5rem);
}

body.is-guest .app-shell,
body.is-guest .nav-scrim {
  display: none !important;
}

body.is-authenticated #landing-root {
  display: none !important;
}

#landing-root {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  color: var(--text-primary, #0f172a);
  font-family: var(--font-body, "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif);
}

.landing-shell {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 0 0 5rem;
}

.landing-nav {
  position: sticky;
  top: 1.5rem;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 1.5rem auto 0;
  padding: 0.7rem 0.8rem 0.7rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), 0 18px 48px rgba(15, 23, 42, 0.08);
}

.landing-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.landing-brand-mark {
  width: 2rem;
  height: 2rem;
  border-radius: 0.8rem;
  display: grid;
  place-items: center;
  border: 1px solid rgba(98, 242, 196, 0.35);
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.22), transparent 40%),
    rgba(98, 242, 196, 0.12);
  box-shadow: 0 0 1.2rem rgba(98, 242, 196, 0.25);
  font-family: var(--font-display, "Microsoft YaHei UI", "Microsoft YaHei", sans-serif);
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.landing-brand strong {
  display: block;
  font-family: var(--font-display, "Microsoft YaHei UI", "Microsoft YaHei", sans-serif);
  font-size: 0.98rem;
  letter-spacing: -0.02em;
}

.landing-brand small {
  display: block;
  color: var(--text-secondary, rgba(15, 23, 42, 0.68));
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.landing-nav-links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.landing-nav-links a {
  color: var(--text-secondary, rgba(15, 23, 42, 0.68));
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  text-transform: none;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  transition: color 500ms var(--landing-ease), background 500ms var(--landing-ease), transform 500ms var(--landing-ease);
}

.landing-nav-links a:hover {
  color: var(--text-primary, #0f172a);
  background: rgba(255, 255, 255, 0.04);
}

.landing-nav-actions {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.landing-menu-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.1);
  background: rgba(15, 23, 42, 0.03);
  color: inherit;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.28rem;
  cursor: pointer;
}

.landing-menu-toggle span {
  display: block;
  width: 1rem;
  height: 1.5px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 500ms var(--landing-ease), opacity 500ms var(--landing-ease);
}

body.landing-nav-open .landing-menu-toggle span:first-child {
  transform: translateY(5px) rotate(45deg);
}

body.landing-nav-open .landing-menu-toggle span:nth-child(2) {
  opacity: 0;
}

body.landing-nav-open .landing-menu-toggle span:last-child {
  transform: translateY(-5px) rotate(-45deg);
}

.landing-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 2rem;
  align-items: center;
  padding: clamp(3.5rem, 8vw, 6.5rem) 0 var(--landing-space);
}

.landing-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1.1rem;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(124, 92, 255, 0.28);
  background: rgba(124, 92, 255, 0.08);
  color: #5b4bd6;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: none;
}

.landing-kicker i {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: #047857;
  box-shadow: 0 0 0.8rem rgba(4, 120, 87, 0.35);
}

.landing-hero h1 {
  margin: 0;
  max-width: 12ch;
  font-family: var(--font-display, "Microsoft YaHei UI", "Microsoft YaHei", sans-serif);
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  line-height: 0.96;
  letter-spacing: -0.035em;
  font-weight: 800;
  text-wrap: balance;
}

.landing-hero-copy {
  margin: 1.25rem 0 0;
  max-width: 38rem;
  color: var(--text-secondary, rgba(15, 23, 42, 0.68));
  font-size: 1.05rem;
  line-height: 1.7;
}

.landing-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.8rem;
}

.landing-button {
  appearance: none;
  border: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  min-height: 2.9rem;
  padding: 0.7rem 0.85rem 0.7rem 1.15rem;
  border-radius: 999px;
  font: inherit;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 500ms var(--landing-ease), background 500ms var(--landing-ease), border-color 500ms var(--landing-ease);
}

.landing-button:hover {
  transform: scale(1.02);
}

.landing-button:active {
  transform: scale(0.98);
}

.landing-button.primary {
  color: #ffffff;
  background: #047857;
  box-shadow: 0 10px 30px rgba(4, 120, 87, 0.22);
}

.landing-button.ghost {
  color: var(--text-primary, #0f172a);
  border: 1px solid rgba(15, 23, 42, 0.1);
  background: rgba(15, 23, 42, 0.03);
}

.landing-button .arrow {
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.22);
  font-size: 0.85rem;
}

.landing-button.ghost .arrow {
  background: rgba(15, 23, 42, 0.06);
}

.landing-matrix {
  position: relative;
  border-radius: 2rem;
  padding: 1px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.7)),
    rgba(255, 255, 255, 0.9);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.08), 0 0 40px rgba(124, 92, 255, 0.05);
}

.landing-matrix-inner {
  border-radius: calc(2rem - 1px);
  padding: 1.2rem;
  background:
    radial-gradient(circle at 20% 15%, rgba(124, 92, 255, 0.08), transparent 42%),
    radial-gradient(circle at 80% 80%, rgba(4, 120, 87, 0.08), transparent 40%),
    #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.landing-matrix-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.landing-matrix-head strong {
  display: block;
  font-family: var(--font-display, "Microsoft YaHei UI", "Microsoft YaHei", sans-serif);
  letter-spacing: -0.02em;
}

.landing-matrix-head small,
.landing-section-label,
.landing-card-label {
  display: block;
  color: var(--text-secondary, rgba(15, 23, 42, 0.68));
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: none;
}

.landing-signal-list {
  display: grid;
  gap: 0.7rem;
}

.landing-signal {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.8rem;
  align-items: center;
  padding: 0.85rem 0.95rem;
  border-radius: 1.15rem;
  border: 1px solid rgba(15, 23, 42, 0.06);
  background: rgba(15, 23, 42, 0.02);
}

.landing-signal b {
  font-size: 0.92rem;
}

.landing-signal span {
  color: var(--text-secondary, rgba(15, 23, 42, 0.68));
  font-size: 0.78rem;
}

.landing-signal em {
  font-style: normal;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #047857;
}

.landing-signal.alert em {
  color: #d97706;
}

.landing-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: #047857;
  box-shadow: 0 0 0.8rem rgba(98, 242, 196, 0.75);
}

.landing-dot.warn {
  background: #d97706;
  box-shadow: 0 0 0.8rem rgba(217, 119, 6, 0.28);
}

.landing-section {
  padding: var(--landing-space) 0 0;
}

.landing-section-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1.5rem;
}

.landing-section-head h2 {
  margin: 0.45rem 0 0;
  font-family: var(--font-display, "Microsoft YaHei UI", "Microsoft YaHei", sans-serif);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.landing-bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
}

.landing-card {
  position: relative;
  grid-column: span 4;
  border-radius: 2rem;
  padding: 1px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.95)),
    #ffffff;
}

.landing-card.wide {
  grid-column: span 8;
}

.landing-card-inner {
  height: 100%;
  border-radius: calc(2rem - 1px);
  padding: 1.35rem 1.35rem 1.25rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), transparent 40%),
    #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.landing-card h3 {
  margin: 0.7rem 0 0.55rem;
  font-family: var(--font-display, "Microsoft YaHei UI", "Microsoft YaHei", sans-serif);
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.landing-card p {
  margin: 0;
  color: var(--text-secondary, rgba(15, 23, 42, 0.68));
  line-height: 1.65;
  font-size: 0.95rem;
}

.landing-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.landing-step {
  border-radius: 1.5rem;
  padding: 1.1rem 1rem;
  border: 1px solid rgba(15, 23, 42, 0.07);
  background: rgba(255, 255, 255, 0.85);
}

.landing-step strong {
  display: block;
  margin: 0.55rem 0 0.35rem;
  font-family: var(--font-display, "Microsoft YaHei UI", "Microsoft YaHei", sans-serif);
}

.landing-step p {
  margin: 0;
  color: var(--text-secondary, rgba(15, 23, 42, 0.68));
  font-size: 0.88rem;
  line-height: 1.55;
}

.landing-step-index {
  color: #047857;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.landing-final {
  margin-top: var(--landing-space);
  border-radius: 2rem;
  padding: 1px;
  background:
    linear-gradient(135deg, rgba(4, 120, 87, 0.18), rgba(124, 92, 255, 0.12), rgba(255, 255, 255, 0.7));
}

.landing-final-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.25rem;
  align-items: center;
  border-radius: calc(2rem - 1px);
  padding: 1.6rem 1.5rem;
  background:
    radial-gradient(circle at 12% 20%, rgba(4, 120, 87, 0.08), transparent 36%),
    radial-gradient(circle at 90% 70%, rgba(124, 92, 255, 0.08), transparent 40%),
    #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.landing-final h2 {
  margin: 0.35rem 0 0.45rem;
  font-family: var(--font-display, "Microsoft YaHei UI", "Microsoft YaHei", sans-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
}

.landing-final p {
  margin: 0;
  color: var(--text-secondary, rgba(15, 23, 42, 0.68));
  max-width: 40rem;
  line-height: 1.65;
}

.landing-footnote {
  margin-top: 1.5rem;
  color: rgba(15, 23, 42, 0.5);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.landing-reveal {
  opacity: 1;
  transform: none;
  filter: none;
}

.js-enabled .landing-reveal {
  opacity: 0;
  transform: translateY(18px);
  filter: blur(8px);
  transition: opacity 800ms var(--landing-ease), transform 800ms var(--landing-ease), filter 800ms var(--landing-ease);
  transition-delay: var(--landing-delay, 0ms);
}

.js-enabled .landing-reveal.is-visible {
  opacity: 1;
  transform: none;
  filter: none;
}

.login-error {
  min-height: 1.2rem;
  margin: 0.65rem 0 0;
  color: #b91c1c;
  font-size: 0.86rem;
}

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

  .landing-card,
  .landing-card.wide {
    grid-column: span 6;
  }

  .landing-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .landing-shell {
    width: min(100% - 1.25rem, 1180px);
  }

  .landing-nav {
    top: 0.85rem;
    padding: 0.55rem 0.55rem 0.55rem 0.85rem;
  }

  .landing-nav-links,
  .landing-nav-actions .landing-button.ghost {
    display: none;
  }

  body.landing-nav-open .landing-nav {
    border-radius: 1.4rem;
    flex-wrap: wrap;
  }

  body.landing-nav-open .landing-nav-links {
    display: grid;
    width: 100%;
    order: 3;
    gap: 0.25rem;
    padding: 0.35rem 0.35rem 0.55rem;
  }

  body.landing-nav-open .landing-nav-links a {
    padding: 0.85rem 0.9rem;
  }

  .landing-menu-toggle {
    display: inline-flex;
  }

  .landing-hero h1 {
    max-width: none;
  }

  .landing-card,
  .landing-card.wide,
  .landing-flow {
    grid-column: span 12;
    grid-template-columns: 1fr;
  }

  .landing-cta-row,
  .landing-final-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .landing-button {
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .landing-button,
  .landing-nav-links a,
  .landing-menu-toggle span,
  .js-enabled .landing-reveal {
    transition: none !important;
    transform: none !important;
    filter: none !important;
    opacity: 1 !important;
  }
}