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

:root {
  --ink: #1a1220;
  --ink-soft: #3d3348;
  --paper: #f7f1ea;
  --paper-deep: #ebe2d6;
  --blush: #ff4d8d;
  --blush-deep: #e0246b;
  --mint: #2ec4b6;
  --mint-deep: #1a9e93;
  --sky: #9fd0e0;
  --amber: #ffb347;
  --glass: rgba(255, 255, 255, 0.55);
  --line: rgba(26, 18, 32, 0.1);
  --shadow: 0 18px 40px rgba(26, 18, 32, 0.12);
  --radius: 22px;
  --max: 1120px;
  --nav-h: 64px;
  --dock-h: auto;
  --font-display: "ZCOOL QingKe HuangYou", "Noto Sans SC", sans-serif;
  --font-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(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(255, 77, 141, 0.18), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(46, 196, 182, 0.16), transparent 55%),
    linear-gradient(180deg, #faf6f1 0%, var(--paper) 40%, #f3ebe3 100%);
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.035;
  background-image: radial-gradient(circle, #1a1220 1px, transparent 1.2px);
  background-size: 7px 7px;
  z-index: 0;
}

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

a:hover {
  color: var(--mint-deep);
}

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

.ink-shell {
  position: relative;
  z-index: 1;
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
}

/* top promo */
.promo-ribbon {
  position: relative;
  z-index: 30;
  background: linear-gradient(90deg, rgba(255, 77, 141, 0.12), rgba(46, 196, 182, 0.12));
  border-bottom: 1px solid var(--line);
  padding: 10px 0 6px;
}

.promo-ribbon .dock-grid {
  width: min(100% - 20px, var(--max));
  margin: 0 auto;
}

.dock-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px 8px;
  justify-items: center;
}

@media (min-width: 900px) {
  .dock-grid {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }
}

.dock-chip {
  width: 72px;
  text-align: center;
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.2;
}

.dock-chip img {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 8px 18px rgba(26, 18, 32, 0.14);
  margin: 0 auto 6px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  background: #fff;
}

.dock-chip:hover img {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 12px 24px rgba(26, 18, 32, 0.18);
}

.dock-chip span {
  display: block;
  max-width: 72px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin: 0 auto;
}

/* sticky download dock */
.bloom-sticky {
  position: sticky;
  top: var(--nav-h);
  z-index: 40;
  background: rgba(247, 241, 234, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  padding: 8px 0;
  transform: translateY(-120%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.28s ease, opacity 0.28s ease;
}

.bloom-sticky.is-shown {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.bloom-sticky .dock-grid {
  width: min(100% - 20px, var(--max));
  margin: 0 auto;
}

/* nav */
.cel-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.cel-nav-inner {
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: relative;
}

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

.brand-mark img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(255, 77, 141, 0.35);
}

.brand-mark strong {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
}

.nav-burger {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.85);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  z-index: 60;
}

.nav-burger span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.nav-burger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-burger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-trail {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 0.92rem;
}

.nav-trail a {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 500;
}

.nav-trail a:hover {
  color: var(--blush-deep);
}

.nav-scrim {
  display: none;
}

/* hero */
.orbit-hero {
  position: relative;
  min-height: calc(100svh - var(--nav-h) - 80px);
  display: grid;
  align-items: end;
  padding: 36px 0 48px;
  overflow: hidden;
}

.orbit-hero::before {
  content: "";
  position: absolute;
  inset: 8% -10% auto auto;
  width: min(72vw, 560px);
  aspect-ratio: 1;
  border-radius: 40% 60% 55% 45%;
  background:
    radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.55), transparent 45%),
    linear-gradient(145deg, rgba(255, 77, 141, 0.55), rgba(159, 208, 224, 0.45));
  filter: blur(2px);
  animation: blob-drift 12s ease-in-out infinite alternate;
  z-index: -1;
}

.orbit-hero::after {
  content: "";
  position: absolute;
  left: -8%;
  bottom: 5%;
  width: min(50vw, 360px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 196, 182, 0.35), transparent 70%);
  animation: blob-drift 10s ease-in-out infinite alternate-reverse;
  z-index: -1;
}

@keyframes blob-drift {
  from {
    transform: translate(0, 0) rotate(0deg);
  }
  to {
    transform: translate(-18px, 22px) rotate(8deg);
  }
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(3rem, 12vw, 5.6rem);
  line-height: 1.05;
  margin: 0 0 12px;
  letter-spacing: 0.06em;
  background: linear-gradient(120deg, var(--ink) 20%, var(--blush-deep) 70%, var(--mint-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: title-glow 2.4s ease-in-out infinite alternate;
}

@keyframes title-glow {
  from {
    filter: drop-shadow(0 0 0 transparent);
  }
  to {
    filter: drop-shadow(0 8px 18px rgba(255, 77, 141, 0.25));
  }
}

.hero-lead {
  font-size: clamp(1.05rem, 2.8vw, 1.25rem);
  max-width: 34em;
  color: var(--ink-soft);
  margin: 0 0 22px;
}

.hero-stage {
  margin-top: 28px;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.65);
  transform: translateY(12px);
  opacity: 0;
  animation: rise-in 0.9s 0.15s ease forwards;
}

.hero-stage img {
  width: 100%;
  max-height: 52vh;
  object-fit: cover;
  object-position: top center;
}

@keyframes rise-in {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

[data-rise] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-rise].is-risen {
  opacity: 1;
  transform: translateY(0);
}

/* typography blocks */
.section-gap {
  padding: 56px 0;
}

.section-gap + .section-gap {
  padding-top: 8px;
}

.h-ink {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4.5vw, 2.35rem);
  margin: 0 0 16px;
  line-height: 1.25;
  letter-spacing: 0.03em;
}

.h-soft {
  font-size: clamp(1.2rem, 3vw, 1.45rem);
  margin: 28px 0 12px;
  color: var(--ink);
}

.prose-block p {
  margin: 0 0 1em;
  color: var(--ink-soft);
  font-size: 1.02rem;
}

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

/* layouts */
.split-lane {
  display: grid;
  gap: 28px;
  align-items: center;
}

@media (min-width: 860px) {
  .split-lane {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 40px;
  }
  .split-lane.is-flip {
    grid-template-columns: 0.95fr 1.05fr;
  }
  .split-lane.is-flip .lane-visual {
    order: 2;
  }
}

.lane-visual {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.7);
}

.lane-visual img {
  width: 100%;
  aspect-ratio: 9 / 16;
  max-height: 520px;
  object-fit: cover;
  object-position: top;
}

.lane-visual::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 28%;
  background: linear-gradient(transparent, rgba(26, 18, 32, 0.18));
  pointer-events: none;
}

.glass-panel {
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius);
  padding: 22px 20px;
  box-shadow: 0 10px 30px rgba(26, 18, 32, 0.06);
}

.tile-matrix {
  display: grid;
  gap: 16px;
}

@media (min-width: 720px) {
  .tile-matrix {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .tile-matrix.is-trio {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.tile-card {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.62));
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px;
  box-shadow: 0 12px 28px rgba(26, 18, 32, 0.06);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.tile-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 34px rgba(26, 18, 32, 0.1);
}

.tile-card h3 {
  margin: 12px 0 8px;
  font-size: 1.12rem;
}

.tile-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

.tile-card img {
  width: 100%;
  border-radius: 14px;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: top;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
}

.soft-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 77, 141, 0.1);
  color: var(--blush-deep);
  font-size: 0.82rem;
  font-weight: 500;
}

.soft-chip.mint {
  background: rgba(46, 196, 182, 0.14);
  color: var(--mint-deep);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.btn-bloom,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-bloom {
  background: linear-gradient(135deg, var(--blush), var(--blush-deep));
  color: #fff;
  box-shadow: 0 10px 24px rgba(224, 36, 107, 0.28);
}

.btn-bloom:hover {
  color: #fff;
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  color: var(--blush-deep);
  background: #fff;
}

.quote-band {
  margin: 28px 0;
  padding: 22px 24px;
  border-left: 4px solid var(--mint);
  background: linear-gradient(90deg, rgba(46, 196, 182, 0.1), transparent);
  border-radius: 0 18px 18px 0;
  color: var(--ink-soft);
}

.mosaic-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

@media (min-width: 860px) {
  .mosaic-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.mosaic-strip figure {
  margin: 0;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #fff;
}

.mosaic-strip img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: top;
  transition: transform 0.45s ease;
}

.mosaic-strip figure:hover img {
  transform: scale(1.05);
}

.crumb-path {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 18px 0 8px;
}

.crumb-path a {
  color: var(--ink-soft);
  text-decoration: none;
}

.crumb-path a:hover {
  color: var(--blush-deep);
}

.legal-frame {
  padding: 24px 0 64px;
}

.legal-frame .h-ink {
  margin-bottom: 8px;
}

.legal-frame .lead {
  color: var(--ink-soft);
  margin-bottom: 28px;
}

.page-foot {
  margin-top: 40px;
  padding: 36px 0 48px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.45));
}

.foot-grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 760px) {
  .foot-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

.page-foot h3 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.page-foot ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-foot li {
  margin: 0 0 8px;
}

.page-foot a {
  text-decoration: none;
  color: var(--ink-soft);
}

.page-foot a:hover {
  color: var(--blush-deep);
}

.foot-copy {
  margin-top: 28px;
  font-size: 0.86rem;
  color: #7a7084;
}

.error-stage {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 48px 0;
}

.error-stage .code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 18vw, 7rem);
  line-height: 1;
  background: linear-gradient(120deg, var(--blush), var(--mint));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin: 0;
}

.longform-rail {
  columns: 1;
  gap: 28px;
}

@media (min-width: 900px) {
  .longform-rail.is-two {
    columns: 2;
  }
}

.longform-rail p {
  break-inside: avoid;
}

.feature-pulse {
  display: grid;
  gap: 14px;
}

.feature-pulse .pulse-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  align-items: start;
  padding: 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--line);
}

.pulse-orb {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  color: #fff;
  background: linear-gradient(135deg, var(--blush), #ff8fb8);
}

.pulse-orb.alt {
  background: linear-gradient(135deg, var(--mint), #7ee0d4);
}

.pulse-orb.warn {
  background: linear-gradient(135deg, var(--amber), #ffcf7a);
  color: var(--ink);
}

@media (max-width: 860px) {
  .nav-burger {
    display: inline-flex;
  }

  .nav-trail {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    left: auto;
    width: min(78vw, 280px);
    max-height: min(70vh, 420px);
    overflow: auto;
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    padding: 10px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--line);
    box-shadow: 0 18px 40px rgba(26, 18, 32, 0.16);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.98);
    pointer-events: none;
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
    z-index: 55;
  }

  .nav-trail.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    pointer-events: auto;
  }

  .nav-trail a {
    display: block;
    padding: 12px 14px;
    border-radius: 12px;
    font-size: 0.98rem;
  }

  .nav-trail a:hover,
  .nav-trail a:focus-visible {
    background: rgba(255, 77, 141, 0.1);
    color: var(--blush-deep);
  }

  .nav-scrim {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(26, 18, 32, 0.28);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.22s ease, visibility 0.22s;
    z-index: 45;
  }

  .nav-scrim.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  body.nav-locked {
    overflow: hidden;
  }
}

@media (max-width: 640px) {
  .orbit-hero {
    min-height: auto;
    padding-top: 28px;
  }
}