:root {
  --xbc-plum-950: #0c0618;
  --xbc-plum-900: #160d28;
  --xbc-plum-800: #241538;
  --xbc-rose-500: #ff758f;
  --xbc-rose-300: #ffb3c1;
  --xbc-lilac-400: #c084fc;
  --xbc-lilac-200: #e9d5ff;
  --xbc-mint-400: #6ee7b7;
  --xbc-gold-400: #fbbf24;
  --xbc-ink-100: #f5f0fa;
  --xbc-ink-300: #c4b5d4;
  --xbc-ink-500: #8b7a9e;
  --xbc-glass: rgba(22, 13, 40, 0.78);
  --xbc-radius-xl: 28px;
  --xbc-radius-lg: 18px;
  --xbc-radius-md: 12px;
  --xbc-shadow: 0 22px 60px rgba(8, 2, 20, 0.45);
  --xbc-nav-h: 62px;
  --xbc-dock-h: 86px;
  --xbc-font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --xbc-display: "Outfit", var(--xbc-font);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--xbc-font);
  background: var(--xbc-plum-950);
  color: var(--xbc-ink-100);
  line-height: 1.78;
  overflow-x: hidden;
}

body.xbc-dock-active { padding-top: var(--xbc-dock-h); }

a { color: var(--xbc-rose-300); text-decoration: none; transition: color 0.22s; }
a:hover { color: var(--xbc-mint-400); }

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

.xbc-shell { width: min(1140px, 93vw); margin: 0 auto; }

/* ===== Header ===== */
.xbc-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--xbc-nav-h);
  background: var(--xbc-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(192, 132, 252, 0.14);
  transition: box-shadow 0.3s;
}

.xbc-topbar.xbc-topbar-scrolled { box-shadow: var(--xbc-shadow); }

.xbc-topbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.xbc-logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--xbc-display);
  font-weight: 700;
  font-size: 1.12rem;
  color: #fff;
  letter-spacing: 0.02em;
}

.xbc-logo-link img {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  box-shadow: 0 4px 16px rgba(255, 117, 143, 0.35);
}

.xbc-menu-desktop { display: none; gap: 26px; list-style: none; }
.xbc-menu-desktop a {
  color: var(--xbc-ink-100);
  font-size: 0.93rem;
  position: relative;
}
.xbc-menu-desktop a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--xbc-rose-500), var(--xbc-lilac-400));
  transition: width 0.25s;
}
.xbc-menu-desktop a:hover::after,
.xbc-menu-desktop a.xbc-nav-active::after { width: 100%; }
.xbc-menu-desktop a.xbc-nav-active { color: var(--xbc-rose-300); }

.xbc-hamburger {
  width: 42px;
  height: 42px;
  border: none;
  background: rgba(192, 132, 252, 0.14);
  border-radius: 11px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.xbc-hamburger i {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--xbc-lilac-200);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

.xbc-hamburger.xbc-open i:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.xbc-hamburger.xbc-open i:nth-child(2) { opacity: 0; }
.xbc-hamburger.xbc-open i:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.xbc-drawer {
  position: fixed;
  top: var(--xbc-nav-h);
  left: 0;
  right: 0;
  background: rgba(12, 6, 24, 0.97);
  backdrop-filter: blur(22px);
  padding: 18px 20px 24px;
  transform: translateY(-130%);
  opacity: 0;
  transition: transform 0.35s, opacity 0.35s;
  z-index: 999;
  border-bottom: 1px solid rgba(192, 132, 252, 0.12);
}

.xbc-drawer.xbc-drawer-open { transform: translateY(0); opacity: 1; }
.xbc-drawer ul { list-style: none; }
.xbc-drawer li { border-bottom: 1px solid rgba(139, 122, 158, 0.12); }
.xbc-drawer a {
  display: block;
  padding: 15px 6px;
  color: var(--xbc-ink-100);
  font-size: 1.02rem;
}

/* ===== Sticky dock ===== */
.xbc-float-bar {
  position: fixed;
  top: var(--xbc-nav-h);
  left: 0;
  right: 0;
  z-index: 998;
  background: rgba(36, 21, 56, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 117, 143, 0.18);
  padding: 7px 10px;
  transform: translateY(-120%);
  transition: transform 0.32s ease;
}

.xbc-float-bar.xbc-float-visible { transform: translateY(0); }

.xbc-float-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  max-width: 1140px;
  margin: 0 auto;
}

.xbc-float-item {
  width: calc(20% - 5px);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
}

.xbc-float-item img {
  width: 50px;
  height: 50px;
  border-radius: 13px;
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: transform 0.18s;
}

.xbc-float-item:hover img { transform: scale(1.07); }

.xbc-float-item span {
  font-size: 10px;
  color: var(--xbc-ink-500);
  margin-top: 3px;
  max-width: 58px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== Promo zone ===== */
.xbc-ad-strip {
  padding-top: calc(var(--xbc-nav-h) + 10px);
  background: radial-gradient(ellipse at 50% 0%, rgba(192, 132, 252, 0.12) 0%, transparent 65%);
}

.xbc-ad-strip #ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  margin: 8px auto;
  gap: 4px;
}

.xbc-ad-strip #ads > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 70px;
}

.xbc-ad-strip #ads img {
  width: 62px;
  height: 62px;
  border-radius: 16px;
  object-fit: cover;
  box-shadow: 0 5px 16px rgba(24, 24, 24, 0.14);
  transition: transform 0.18s;
}

.xbc-ad-strip #ads img:hover { transform: translateY(-3px) scale(1.04); }

.xbc-ad-strip #ads .caption {
  height: 15px;
  font-size: 11px;
  color: var(--xbc-ink-500);
  text-align: center;
  max-width: 68px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== Hero ===== */
.xbc-masthead {
  position: relative;
  padding: 48px 0 56px;
  overflow: hidden;
}

.xbc-masthead-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 40%, rgba(255, 117, 143, 0.22) 0%, transparent 45%),
    radial-gradient(circle at 85% 20%, rgba(192, 132, 252, 0.18) 0%, transparent 40%),
    linear-gradient(165deg, var(--xbc-plum-900) 0%, var(--xbc-plum-950) 100%);
  z-index: 0;
}

.xbc-masthead-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
  align-items: center;
}

.xbc-ribbon {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(255, 117, 143, 0.14);
  border: 1px solid rgba(255, 117, 143, 0.35);
  color: var(--xbc-rose-300);
  margin-bottom: 14px;
}

.xbc-masthead h1 {
  font-family: var(--xbc-display);
  font-size: clamp(1.65rem, 5vw, 2.35rem);
  line-height: 1.28;
  font-weight: 700;
  background: linear-gradient(135deg, #fff 30%, var(--xbc-rose-300) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.xbc-lead {
  font-size: 1.02rem;
  color: var(--xbc-ink-300);
  max-width: 640px;
  margin-top: 16px;
}

.xbc-masthead-visual {
  border-radius: var(--xbc-radius-xl);
  overflow: hidden;
  border: 1px solid rgba(192, 132, 252, 0.2);
  box-shadow: var(--xbc-shadow);
  max-width: 320px;
  margin: 0 auto;
}

.xbc-masthead-visual img { width: 100%; }

.xbc-cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }

.xbc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--xbc-radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

.xbc-btn:active { transform: scale(0.97); }

.xbc-btn-ghost {
  background: transparent;
  border: 1px solid rgba(192, 132, 252, 0.45);
  color: var(--xbc-lilac-200);
}

.xbc-btn-ghost:hover { background: rgba(192, 132, 252, 0.1); color: #fff; }

.xbc-btn-glow {
  background: linear-gradient(135deg, var(--xbc-rose-500), var(--xbc-lilac-400));
  color: #fff;
  box-shadow: 0 8px 28px rgba(255, 117, 143, 0.35);
}

.xbc-btn-glow:hover { box-shadow: 0 12px 36px rgba(192, 132, 252, 0.4); color: #fff; }

/* ===== Sections ===== */
.xbc-block { padding: 52px 0; }
.xbc-block-shade { background: rgba(22, 13, 40, 0.55); }

.xbc-block-title { margin-bottom: 28px; }

.xbc-block-title h2 {
  font-family: var(--xbc-display);
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  color: #fff;
  margin-bottom: 10px;
}

.xbc-block-title p { color: var(--xbc-ink-500); font-size: 0.96rem; }

.xbc-article p { margin-bottom: 1.05em; color: var(--xbc-ink-300); }
.xbc-article h3 {
  font-size: 1.15rem;
  color: var(--xbc-lilac-200);
  margin: 1.6em 0 0.7em;
}

.xbc-article ul, .xbc-article ol {
  margin: 0.8em 0 1.2em 1.4em;
  color: var(--xbc-ink-300);
}

.xbc-article li { margin-bottom: 0.45em; }

/* Mosaic cards */
.xbc-mosaic {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.xbc-tile {
  background: linear-gradient(145deg, rgba(36, 21, 56, 0.9), rgba(22, 13, 40, 0.95));
  border: 1px solid rgba(192, 132, 252, 0.15);
  border-radius: var(--xbc-radius-lg);
  padding: 22px 20px;
  transition: border-color 0.25s, transform 0.25s;
}

.xbc-tile:hover {
  border-color: rgba(255, 117, 143, 0.35);
  transform: translateY(-3px);
}

.xbc-tile-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 12px;
  background: rgba(255, 117, 143, 0.12);
  color: var(--xbc-rose-300);
}

.xbc-tile h3 { font-size: 1.05rem; color: #fff; margin-bottom: 8px; }
.xbc-tile p { font-size: 0.9rem; color: var(--xbc-ink-500); line-height: 1.65; }

/* Media rows */
.xbc-media-row {
  display: grid;
  gap: 28px;
  align-items: center;
}

.xbc-media-row.xbc-flip .xbc-media-body { order: 2; }
.xbc-media-row.xbc-flip .xbc-media-frame { order: 1; }

.xbc-media-frame {
  border-radius: var(--xbc-radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 117, 143, 0.18);
  box-shadow: 0 16px 40px rgba(8, 2, 20, 0.35);
  max-width: 280px;
  margin: 0 auto;
}

.xbc-media-frame img { width: 100%; }

/* Pill grid */
.xbc-pill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0;
}

.xbc-pill {
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  background: rgba(110, 231, 183, 0.08);
  border: 1px solid rgba(110, 231, 183, 0.22);
  color: var(--xbc-mint-400);
}

/* Timeline */
.xbc-timeline { position: relative; padding-left: 24px; }

.xbc-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--xbc-rose-500), var(--xbc-lilac-400));
  border-radius: 2px;
}

.xbc-step {
  position: relative;
  margin-bottom: 24px;
  padding-left: 18px;
}

.xbc-step::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--xbc-rose-500);
  box-shadow: 0 0 12px rgba(255, 117, 143, 0.6);
}

.xbc-step h3 { font-size: 1.02rem; color: #fff; margin-bottom: 6px; }
.xbc-step p { font-size: 0.92rem; color: var(--xbc-ink-500); }

/* FAQ */
.xbc-acc-item {
  border: 1px solid rgba(139, 122, 158, 0.18);
  border-radius: var(--xbc-radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  background: rgba(22, 13, 40, 0.6);
}

.xbc-acc-trigger {
  width: 100%;
  text-align: left;
  padding: 16px 18px;
  background: none;
  border: none;
  color: var(--xbc-ink-100);
  font-size: 0.98rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.xbc-acc-trigger::after {
  content: "+";
  font-size: 1.2rem;
  color: var(--xbc-lilac-400);
  transition: transform 0.25s;
}

.xbc-acc-item.xbc-acc-open .xbc-acc-trigger::after { transform: rotate(45deg); }

.xbc-acc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.xbc-acc-body-inner {
  padding: 0 18px 16px;
  color: var(--xbc-ink-500);
  font-size: 0.92rem;
}

.xbc-acc-item.xbc-acc-open .xbc-acc-body { max-height: 400px; }

/* Breadcrumb */
.xbc-crumb {
  padding: calc(var(--xbc-nav-h) + 20px) 0 12px;
  font-size: 0.85rem;
  color: var(--xbc-ink-500);
}

.xbc-crumb a { color: var(--xbc-ink-300); }
.xbc-crumb span { color: var(--xbc-rose-300); }

/* Subpage hero */
.xbc-sub-hero {
  padding: 24px 0 36px;
  border-bottom: 1px solid rgba(192, 132, 252, 0.1);
}

.xbc-sub-hero h1 {
  font-family: var(--xbc-display);
  font-size: clamp(1.4rem, 4.5vw, 2rem);
  color: #fff;
}

/* Legal prose */
.xbc-legal { padding: 32px 0 56px; }
.xbc-legal h2 {
  font-size: 1.2rem;
  color: var(--xbc-lilac-200);
  margin: 2em 0 0.8em;
}
.xbc-legal h2:first-child { margin-top: 0; }
.xbc-legal p, .xbc-legal li { color: var(--xbc-ink-300); margin-bottom: 0.9em; }
.xbc-legal ul { margin-left: 1.3em; }

/* Error pages */
.xbc-error-page {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--xbc-nav-h) + 40px) 20px 60px;
}

.xbc-error-code {
  font-family: var(--xbc-display);
  font-size: clamp(4rem, 15vw, 7rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--xbc-rose-500), var(--xbc-lilac-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.xbc-error-page h1 { font-size: 1.3rem; margin: 16px 0 10px; color: #fff; }
.xbc-error-page p { color: var(--xbc-ink-500); max-width: 420px; margin-bottom: 24px; }

/* Footer */
.xbc-foot {
  padding: 36px 0 28px;
  border-top: 1px solid rgba(192, 132, 252, 0.12);
  background: rgba(12, 6, 24, 0.85);
}

.xbc-foot-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 22px;
  list-style: none;
  margin-bottom: 18px;
}

.xbc-foot-nav a { color: var(--xbc-ink-300); font-size: 0.9rem; }
.xbc-foot-nav a:hover { color: var(--xbc-rose-300); }

.xbc-foot-copy {
  text-align: center;
  font-size: 0.82rem;
  color: var(--xbc-ink-500);
}

/* Animations */
@keyframes xbc-rise {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

.xbc-rise { animation: xbc-rise 0.65s ease forwards; }

/* Responsive */
@media (min-width: 640px) {
  .xbc-mosaic { grid-template-columns: repeat(2, 1fr); }
  .xbc-float-item { width: calc(12.5% - 6px); }
}

@media (min-width: 768px) {
  .xbc-menu-desktop { display: flex; }
  .xbc-hamburger { display: none; }
  .xbc-masthead-inner { grid-template-columns: 1.1fr 0.9fr; }
  .xbc-masthead-visual { max-width: 100%; margin: 0; }
  .xbc-media-row { grid-template-columns: 1fr 1fr; }
  .xbc-media-row.xbc-flip .xbc-media-body { order: 1; }
  .xbc-media-row.xbc-flip .xbc-media-frame { order: 2; }
  .xbc-media-frame { max-width: 100%; }
}

@media (min-width: 960px) {
  .xbc-mosaic { grid-template-columns: repeat(3, 1fr); }
  .xbc-tile.xbc-wide { grid-column: span 2; }
}

@media (max-width: 639px) {
  .xbc-float-item { width: calc(20% - 5px); }
}