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

:root {
  --ink: #0c1214;
  --ink-soft: #152024;
  --panel: rgba(22, 36, 40, 0.72);
  --line: rgba(127, 231, 196, 0.18);
  --foam: #7fe7c4;
  --foam-deep: #3cb896;
  --ember: #ff7a6e;
  --lamp: #f6c945;
  --mist: #d7e6e2;
  --paper: #f3efe6;
  --muted: #8fa3a0;
  --radius: 18px;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --max: 1080px;
  --nav-h: 64px;
  --rail-h: auto;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", sans-serif;
  color: var(--paper);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(127, 231, 196, 0.16), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(255, 122, 110, 0.14), transparent 50%),
    linear-gradient(165deg, #0a1012 0%, #121c20 42%, #0e1719 100%);
  min-height: 100vh;
  line-height: 1.75;
  overflow-x: hidden;
}

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

a {
  color: var(--foam);
  text-decoration: none;
}

a:hover {
  color: var(--lamp);
}

h1,
h2,
h3,
.orb-brand-mark {
  font-family: "ZCOOL XiaoWei", "Noto Sans SC", serif;
  font-weight: 400;
  line-height: 1.25;
}

.orb-wrap {
  width: min(100% - 28px, var(--max));
  margin-inline: auto;
}

.orb-promo-band {
  background: linear-gradient(90deg, rgba(255, 122, 110, 0.18), rgba(127, 231, 196, 0.12));
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
}

.orb-promo-mount {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.orb-promo-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 70px;
  color: var(--mist);
  font-size: 11px;
}

.orb-promo-chip img {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.orb-promo-chip em {
  font-style: normal;
  margin-top: 4px;
  max-width: 70px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.orb-topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: rgba(10, 16, 18, 0.78);
  border-bottom: 1px solid var(--line);
  height: var(--nav-h);
  display: flex;
  align-items: center;
}

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

.orb-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--paper);
}

.orb-logo img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
}

.orb-brand-mark {
  font-size: 1.35rem;
  letter-spacing: 0.04em;
}

.orb-nav-panel {
  display: flex;
  gap: 18px;
  align-items: center;
}

.orb-nav-panel a {
  color: var(--mist);
  font-size: 0.92rem;
}

.orb-menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: transparent;
  cursor: pointer;
  position: relative;
}

.orb-menu-btn span,
.orb-menu-btn span::before,
.orb-menu-btn span::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  height: 2px;
  background: var(--foam);
  transition: 0.2s ease;
}

.orb-menu-btn span {
  top: 50%;
  transform: translateY(-50%);
}

.orb-menu-btn span::before {
  top: -8px;
}

.orb-menu-btn span::after {
  top: 8px;
}

.orb-hero {
  position: relative;
  padding: 48px 0 36px;
  overflow: hidden;
}

.orb-hero::before {
  content: "";
  position: absolute;
  inset: 8% -20% auto auto;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(246, 201, 69, 0.2), transparent 70%);
  filter: blur(8px);
  pointer-events: none;
}

.orb-hero-grid {
  display: grid;
  gap: 28px;
  align-items: end;
}

.orb-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--foam);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.orb-kicker i {
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--ember), var(--foam));
  display: inline-block;
}

.orb-hero h1 {
  font-size: clamp(2rem, 7vw, 3.4rem);
  margin: 12px 0 14px;
  background: linear-gradient(120deg, #fff 20%, var(--foam) 55%, var(--lamp) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

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

.orb-hero-visual {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transform: rotate(-1.5deg);
  animation: orb-float 5.5s ease-in-out infinite;
}

.orb-hero-visual img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
}

.orb-hero-glow {
  position: absolute;
  inset: auto 0 0 0;
  height: 40%;
  background: linear-gradient(transparent, rgba(12, 18, 20, 0.92));
}

@keyframes orb-float {
  0%,
  100% {
    transform: rotate(-1.5deg) translateY(0);
  }
  50% {
    transform: rotate(-1deg) translateY(-8px);
  }
}

.orb-sticky-rail {
  position: sticky;
  top: var(--nav-h);
  z-index: 35;
  background: rgba(12, 18, 20, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.28s ease, opacity 0.28s ease, padding 0.28s ease;
  padding: 0;
}

.orb-sticky-rail.is-visible {
  max-height: 220px;
  opacity: 1;
  padding: 10px 0;
}

.orb-rail-mount {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 8px;
  justify-content: flex-start;
}

.orb-rail-item {
  width: calc(25% - 8px);
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--mist);
  font-size: 11px;
}

.orb-rail-item img {
  width: 48px;
  height: 48px;
  border-radius: 13px;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.orb-rail-item span {
  margin-top: 4px;
  max-width: 64px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (min-width: 860px) {
  .orb-rail-item {
    width: calc(12.5% - 8px);
  }
}

.orb-section {
  padding: 42px 0;
}

.orb-section + .orb-section {
  border-top: 1px dashed rgba(127, 231, 196, 0.12);
}

.orb-section h2 {
  font-size: clamp(1.55rem, 4vw, 2.15rem);
  margin: 0 0 14px;
  color: #fff;
}

.orb-section h3 {
  font-size: 1.2rem;
  margin: 22px 0 10px;
  color: var(--foam);
}

.orb-prose p {
  margin: 0 0 1em;
  color: var(--mist);
  font-size: 1rem;
}

.orb-prose a {
  border-bottom: 1px dashed rgba(127, 231, 196, 0.55);
}

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

.orb-split.reverse .orb-media {
  order: -1;
}

.orb-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-soft);
  box-shadow: var(--shadow);
}

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

.orb-glass {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  backdrop-filter: blur(12px);
}

.orb-card-grid {
  display: grid;
  gap: 14px;
}

.orb-feature-card {
  background: linear-gradient(160deg, rgba(255, 122, 110, 0.08), rgba(127, 231, 196, 0.06));
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.orb-feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(127, 231, 196, 0.45);
}

.orb-feature-card h3 {
  margin-top: 0;
}

.orb-feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.orb-mosaic {
  display: grid;
  gap: 12px;
}

.orb-mosaic .orb-media {
  margin: 0;
}

.orb-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.orb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.95rem;
}

.orb-btn-main {
  background: linear-gradient(120deg, var(--ember), #ff9a5c);
  color: #1a0f0d;
}

.orb-btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--paper);
}

.orb-btn-main:hover,
.orb-btn-ghost:hover {
  color: #1a0f0d;
  filter: brightness(1.05);
}

.orb-crumb {
  padding: 18px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.orb-crumb a {
  color: var(--mist);
}

.orb-legal {
  padding-bottom: 60px;
}

.orb-legal h1 {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  margin: 10px 0 18px;
}

.orb-error-shell {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px 0;
}

.orb-error-code {
  font-family: "ZCOOL XiaoWei", serif;
  font-size: clamp(4rem, 18vw, 7rem);
  line-height: 1;
  background: linear-gradient(120deg, var(--ember), var(--lamp));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin: 0;
}

.orb-footer {
  margin-top: 40px;
  border-top: 1px solid var(--line);
  padding: 28px 0 90px;
  color: var(--muted);
  font-size: 0.9rem;
}

.orb-footer-grid {
  display: grid;
  gap: 18px;
}

.orb-footer a {
  color: var(--mist);
  margin-right: 12px;
}

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

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

.orb-pulse {
  animation: orb-pulse 2.8s ease-in-out infinite;
}

@keyframes orb-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(127, 231, 196, 0.35);
  }
  50% {
    box-shadow: 0 0 0 12px rgba(127, 231, 196, 0);
  }
}

.orb-tagline {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--lamp);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

body.orb-rail-open .orb-footer {
  padding-bottom: 120px;
}

@media (min-width: 860px) {
  .orb-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

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

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

  .orb-split.reverse .orb-media {
    order: 0;
  }

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

  .orb-mosaic {
    grid-template-columns: 1.2fr 1fr;
  }

  .orb-footer-grid {
    grid-template-columns: 1.4fr 1fr;
  }
}

@media (max-width: 859px) {
  .orb-menu-btn {
    display: inline-block;
  }

  .orb-nav-panel {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    background: rgba(10, 16, 18, 0.96);
    border-bottom: 1px solid var(--line);
    padding: 8px 16px 14px;
  }

  .orb-nav-panel.is-open {
    display: flex;
  }

  .orb-nav-panel a {
    padding: 12px 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    width: 100%;
  }
}