@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700;900&family=Yusei+Magic&display=swap");

:root {
  --luna-ink: #221833;
  --luna-ink-soft: #4a3a5c;
  --luna-mute: #7a6b8a;
  --luna-canvas: #f4fbf8;
  --luna-panel: #ffffff;
  --luna-blush: #ffe4ef;
  --luna-mint: #d8f5ea;
  --luna-berry: #e11d74;
  --luna-berry-deep: #b01258;
  --luna-tangerine: #ff8a3d;
  --luna-iris: #5a67f2;
  --luna-line: rgba(34, 24, 51, 0.1);
  --luna-glow: 0 22px 48px rgba(225, 29, 116, 0.12);
  --luna-soft: 0 12px 28px rgba(34, 24, 51, 0.08);
  --luna-max: 1060px;
  --luna-nav: 62px;
  --luna-dock: 0px;
  --luna-display: "Yusei Magic", "Noto Sans SC", sans-serif;
  --luna-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--luna-body);
  color: var(--luna-ink);
  background:
    radial-gradient(900px 420px at 8% -10%, #ffe4ef 0%, transparent 55%),
    radial-gradient(800px 380px at 92% 0%, #d8f5ea 0%, transparent 50%),
    radial-gradient(700px 480px at 70% 35%, rgba(90, 103, 242, 0.08) 0%, transparent 60%),
    var(--luna-canvas);
  line-height: 1.75;
  padding-top: calc(var(--luna-nav) + var(--luna-dock));
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--luna-berry-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--luna-iris);
}

.luna-shell {
  width: min(100% - 32px, var(--luna-max));
  margin-inline: auto;
}

/* Header */
.luna-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  height: var(--luna-nav);
  background: rgba(244, 251, 248, 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--luna-line);
}

.luna-topbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.luna-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--luna-ink);
}

.luna-brand img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  box-shadow: var(--luna-soft);
}

.luna-brand span {
  font-family: var(--luna-display);
  font-size: 1.2rem;
  letter-spacing: 0.02em;
}

.luna-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.luna-nav a {
  text-decoration: none;
  color: var(--luna-ink-soft);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}

.luna-nav a:hover,
.luna-nav a.is-here {
  color: var(--luna-berry);
  background: rgba(225, 29, 116, 0.1);
}

.luna-burger {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--luna-line);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  padding: 0;
}

.luna-burger span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--luna-ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.luna-burger.is-open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.luna-burger.is-open span:nth-child(2) {
  opacity: 0;
}

.luna-burger.is-open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Sticky download dock under header */
.luna-dock {
  position: fixed;
  top: var(--luna-nav);
  left: 0;
  right: 0;
  z-index: 80;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--luna-line);
  transform: translateY(-110%);
  transition: transform 0.28s ease;
  max-height: 0;
  overflow: hidden;
}

.luna-dock.is-shown {
  transform: translateY(0);
  max-height: 280px;
}

.luna-dock-inner {
  padding: 10px 0 12px;
}

.luna-dock-label {
  font-size: 0.82rem;
  color: var(--luna-mute);
  margin: 0 0 8px;
  letter-spacing: 0.04em;
}

.luna-ads {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 8px;
  margin: 0;
}

.luna-ads > div {
  width: calc(25% - 8px);
  max-width: 78px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.luna-ads figure {
  margin: 0;
  text-align: center;
}

.luna-ads a {
  display: inline-block;
  border-radius: 16px;
  text-decoration: none;
}

.luna-ads img {
  width: 62px;
  height: 62px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 8px 18px rgba(34, 24, 51, 0.12);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.luna-ads img:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 24px rgba(34, 24, 51, 0.16);
}

.luna-ads .caption {
  display: block;
  margin-top: 4px;
  height: 15px;
  font-size: 11px;
  color: #666;
  max-width: 72px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.luna-promo {
  padding: 14px 0 4px;
}

.luna-promo-title {
  margin: 0 0 8px;
  font-size: 0.88rem;
  color: var(--luna-mute);
  text-align: center;
}

/* Hero */
.luna-hero {
  position: relative;
  overflow: hidden;
  padding: 36px 0 28px;
  isolation: isolate;
}

.luna-hero::before {
  content: "";
  position: absolute;
  inset: 8% -8% auto;
  height: 72%;
  background:
    linear-gradient(128deg, rgba(225, 29, 116, 0.18), rgba(90, 103, 242, 0.14) 48%, rgba(255, 138, 61, 0.16)),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23e11d74' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  border-radius: 48% 52% 42% 58% / 46% 40% 60% 54%;
  filter: blur(2px);
  z-index: -1;
  animation: luna-drift 14s ease-in-out infinite alternate;
}

@keyframes luna-drift {
  from { transform: translate3d(-1%, 0, 0) rotate(-1deg); }
  to { transform: translate3d(2%, 2%, 0) rotate(2deg); }
}

.luna-hero-grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.luna-hero-copy h1 {
  margin: 0 0 14px;
  font-family: var(--luna-display);
  font-size: clamp(1.9rem, 5.2vw, 2.8rem);
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.luna-hero-lead {
  margin: 0;
  font-size: 1.05rem;
  color: var(--luna-ink-soft);
  max-width: 36em;
}

.luna-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.luna-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--luna-ink-soft);
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--luna-line);
}

.luna-hero-visual {
  position: relative;
  justify-self: center;
}

.luna-hero-visual img {
  width: min(280px, 72vw);
  border-radius: 28px;
  box-shadow: var(--luna-glow);
  transform: rotate(-3deg);
  animation: luna-float 5.5s ease-in-out infinite;
}

@keyframes luna-float {
  0%, 100% { transform: rotate(-3deg) translateY(0); }
  50% { transform: rotate(-1deg) translateY(-8px); }
}

.luna-hero-ring {
  position: absolute;
  inset: -18px;
  border: 2px dashed rgba(225, 29, 116, 0.28);
  border-radius: 36px;
  animation: luna-spin 18s linear infinite;
  pointer-events: none;
}

@keyframes luna-spin {
  to { transform: rotate(360deg); }
}

/* Sections */
.luna-main {
  padding-bottom: 48px;
}

.luna-block {
  margin: 34px 0;
  padding: 28px 22px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--luna-line);
  border-radius: 26px;
  box-shadow: var(--luna-soft);
}

.luna-block.is-airy {
  background: transparent;
  border: 0;
  box-shadow: none;
  padding-inline: 4px;
}

.luna-block.is-tint {
  background:
    linear-gradient(160deg, rgba(255, 228, 239, 0.72), rgba(216, 245, 234, 0.55));
}

.luna-kicker {
  display: inline-block;
  margin: 0 0 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--luna-berry);
  text-transform: uppercase;
}

.luna-block h2 {
  margin: 0 0 14px;
  font-family: var(--luna-display);
  font-size: clamp(1.35rem, 3.4vw, 1.85rem);
  line-height: 1.35;
}

.luna-block h3 {
  margin: 22px 0 10px;
  font-size: 1.12rem;
  color: var(--luna-ink);
}

.luna-block p {
  margin: 0 0 14px;
  color: var(--luna-ink-soft);
  font-size: 0.98rem;
}

.luna-block p:last-child {
  margin-bottom: 0;
}

.luna-split {
  display: grid;
  gap: 22px;
  align-items: center;
}

.luna-split img {
  width: 100%;
  max-width: 320px;
  margin-inline: auto;
  border-radius: 22px;
  box-shadow: var(--luna-glow);
}

.luna-split.is-flip .luna-media {
  order: -1;
}

.luna-mosaic {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.luna-tile {
  padding: 18px 16px;
  border-radius: 20px;
  background: var(--luna-panel);
  border: 1px solid var(--luna-line);
  box-shadow: var(--luna-soft);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.luna-tile:hover {
  transform: translateY(-4px);
  box-shadow: var(--luna-glow);
}

.luna-tile h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.luna-tile p {
  margin: 0;
  font-size: 0.92rem;
}

.luna-ribbon {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.luna-note {
  position: relative;
  padding: 16px 16px 16px 18px;
  border-radius: 18px;
  background: linear-gradient(90deg, rgba(90, 103, 242, 0.08), rgba(255, 255, 255, 0.9));
  border-left: 4px solid var(--luna-iris);
}

.luna-note strong {
  color: var(--luna-ink);
}

.luna-crumbs {
  margin: 18px 0 8px;
  font-size: 0.88rem;
  color: var(--luna-mute);
}

.luna-crumbs a {
  color: var(--luna-mute);
  text-decoration: none;
}

.luna-crumbs a:hover {
  color: var(--luna-berry);
}

.luna-legal h2 {
  margin-top: 28px;
}

.luna-legal ul {
  margin: 0 0 14px;
  padding-left: 1.2em;
  color: var(--luna-ink-soft);
}

.luna-legal li {
  margin-bottom: 8px;
}

.luna-error {
  min-height: 52vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px 0;
}

.luna-error h1 {
  margin: 0 0 12px;
  font-family: var(--luna-display);
  font-size: clamp(2rem, 6vw, 3rem);
}

.luna-error p {
  margin: 0 0 20px;
  color: var(--luna-ink-soft);
}

.luna-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--luna-berry), var(--luna-tangerine));
  color: #fff !important;
  text-decoration: none !important;
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(225, 29, 116, 0.28);
}

.luna-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 12px;
}

.luna-links a {
  text-decoration: none;
  color: var(--luna-ink-soft);
  font-size: 0.92rem;
}

.luna-links a:hover {
  color: var(--luna-berry);
}

.luna-footer {
  margin-top: 20px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--luna-line);
  color: var(--luna-mute);
  font-size: 0.9rem;
}

.luna-footer strong {
  color: var(--luna-ink);
  font-family: var(--luna-display);
}

.luna-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.luna-reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (min-width: 768px) {
  .luna-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .luna-split {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .luna-split.is-flip .luna-media {
    order: 0;
  }

  .luna-split.is-flip {
    grid-template-columns: 0.9fr 1.1fr;
  }

  .luna-split.is-flip .luna-media {
    order: -1;
  }

  .luna-mosaic {
    grid-template-columns: repeat(3, 1fr);
  }

  .luna-ribbon {
    grid-template-columns: repeat(2, 1fr);
  }

  .luna-ads > div {
    width: calc(12.5% - 8px);
    max-width: 78px;
  }

  .luna-block {
    padding: 34px 34px;
  }
}

@media (max-width: 767px) {
  .luna-burger {
    display: inline-grid;
    place-items: center;
  }

  .luna-nav {
    position: fixed;
    top: var(--luna-nav);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--luna-line);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s ease, opacity 0.25s ease;
    z-index: 85;
  }

  .luna-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .luna-nav a {
    border-radius: 12px;
  }
}