:root {
  --pink: #ff4d94;
  --pink-deep: #e91e7a;
  --pink-soft: #ffb3d1;
  --plum: #1a0a1f;
  --plum-mid: #2d1435;
  --plum-light: #3d1f4a;
  --violet: #8b3dff;
  --gold: #ffd166;
  --text: #f5eef7;
  --text-muted: #c9b8d4;
  --card-bg: rgba(45, 20, 53, 0.72);
  --nav-h: 58px;
  --radius: 14px;
  --shadow: 0 12px 40px rgba(255, 77, 148, 0.15);
}

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

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  background: var(--plum);
  color: var(--text);
  line-height: 1.85;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(255, 77, 148, 0.22), transparent),
    radial-gradient(ellipse 60% 40% at 90% 20%, rgba(139, 61, 255, 0.18), transparent),
    radial-gradient(ellipse 50% 30% at 50% 100%, rgba(233, 30, 122, 0.12), transparent);
  pointer-events: none;
  z-index: 0;
}

a { color: var(--pink-soft); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--pink); }

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

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(26, 10, 31, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 77, 148, 0.2);
  height: var(--nav-h);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: 0 4px 14px rgba(255, 77, 148, 0.35);
}

.nav-desktop { display: none; gap: 6px; }
.nav-desktop a {
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.nav-desktop a:hover,
.nav-desktop a.active { color: var(--text); background: rgba(255, 77, 148, 0.18); }

.menu-toggle {
  background: none;
  border: 1px solid rgba(255, 77, 148, 0.35);
  color: var(--pink-soft);
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
}

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 12px 0 16px;
  border-top: 1px solid rgba(255, 77, 148, 0.15);
  background: rgba(26, 10, 31, 0.98);
  backdrop-filter: blur(14px);
  position: relative;
  z-index: 1002;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  padding: 12px 4vw;
  color: var(--text);
  font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.nav-mobile a:hover,
.nav-mobile a:active { color: var(--pink-soft); background: rgba(255, 77, 148, 0.1); }

@media (min-width: 768px) {
  .nav-desktop { display: flex; }
  .menu-toggle, .nav-mobile { display: none !important; }
}

/* Sticky download bar */
.sticky-download-bar {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(26, 10, 31, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 77, 148, 0.25);
  padding: 8px 12px;
  transform: translateY(-120%);
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
  pointer-events: none;
}
.sticky-download-bar.visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

body.menu-open .sticky-download-bar {
  transform: translateY(-120%) !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

#sticky-ads {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: 4px;
  max-width: 1120px;
  margin: 0 auto;
}
#sticky-ads > div {
  width: calc(25% - 4px);
  display: flex;
  flex-direction: column;
  align-items: center;
}
#sticky-ads img {
  width: 52px;
  height: 52px;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: 0 4px 14px rgba(255, 77, 148, 0.25);
}
#sticky-ads .caption {
  font-size: 10px;
  color: var(--text-muted);
  text-align: center;
  max-width: 72px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-top: 2px;
}
@media (min-width: 768px) {
  #sticky-ads > div { width: calc(12.5% - 4px); }
  #sticky-ads img { width: 58px; height: 58px; }
}

/* Top ads block */
#ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  background: transparent;
  margin: 14px 0 6px;
  gap: 6px;
}
#ads > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 70px;
}
#ads img {
  width: 65px;
  height: 65px;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 6px 18px rgba(255, 77, 148, 0.2);
  transition: transform 0.18s;
}
#ads img:hover { transform: translateY(-3px) scale(1.04); }
#ads .caption {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  max-width: 70px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-top: 4px;
}

/* Breadcrumb */
.breadcrumb {
  padding: 18px 0 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--pink-soft); }
.breadcrumb span { margin: 0 6px; opacity: 0.5; }

/* Hero */
.hero {
  padding: 28px 0 40px;
  text-align: center;
}
.hero-badge {
  display: inline-block;
  padding: 5px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 77, 148, 0.25), rgba(139, 61, 255, 0.2));
  border: 1px solid rgba(255, 77, 148, 0.35);
  font-size: 0.8rem;
  color: var(--pink-soft);
  margin-bottom: 16px;
  letter-spacing: 0.08em;
}
.hero h1 {
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  line-height: 1.35;
  background: linear-gradient(135deg, #fff, var(--pink-soft));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}
.hero-lead {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 24px;
}
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--pink), var(--pink-deep));
  color: #fff;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: var(--shadow);
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 48px rgba(255, 77, 148, 0.35);
  color: #fff;
}

/* Content sections */
.section { padding: 36px 0; }
.section-title {
  font-size: clamp(1.25rem, 3.5vw, 1.65rem);
  color: var(--text);
  margin-bottom: 8px;
  position: relative;
  padding-left: 16px;
}
.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 70%;
  background: linear-gradient(180deg, var(--pink), var(--violet));
  border-radius: 4px;
}
.section-sub {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 22px;
  padding-left: 16px;
}

/* Pure text block */
.text-block {
  background: var(--card-bg);
  border: 1px solid rgba(255, 77, 148, 0.12);
  border-radius: var(--radius);
  padding: 24px 22px;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}
.text-block p { margin-bottom: 14px; }
.text-block p:last-child { margin-bottom: 0; }

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
@media (min-width: 600px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid rgba(255, 77, 148, 0.14);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition: border-color 0.25s, transform 0.25s;
}
.feature-card:hover {
  border-color: rgba(255, 77, 148, 0.35);
  transform: translateY(-3px);
}
.feature-card h3 {
  font-size: 1.05rem;
  color: var(--pink-soft);
  margin-bottom: 10px;
}
.feature-card p { font-size: 0.92rem; color: var(--text-muted); }

/* Text + image */
.media-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: center;
  margin-bottom: 28px;
  background: var(--card-bg);
  border: 1px solid rgba(255, 77, 148, 0.12);
  border-radius: var(--radius);
  padding: 20px;
  overflow: hidden;
}
@media (min-width: 768px) {
  .media-row { grid-template-columns: 2fr 3fr; }
  .media-row.reverse { grid-template-columns: 3fr 2fr; }
  .media-row.reverse .media-img { order: 2; }
  .media-row.reverse .media-text { order: 1; }
}
.media-img img {
  border-radius: 12px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  background: #0d0610;
}
.media-text h3 {
  font-size: 1.1rem;
  color: var(--pink-soft);
  margin-bottom: 12px;
}
.media-text p { font-size: 0.93rem; color: var(--text-muted); margin-bottom: 10px; }

/* Card + image combo */
.combo-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 28px;
}
@media (min-width: 768px) {
  .combo-block { grid-template-columns: 1fr 1fr; }
}
.combo-visual {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 77, 148, 0.15);
}
.combo-visual img { width: 100%; object-fit: cover; }
.combo-cards { display: flex; flex-direction: column; gap: 12px; }
.combo-cards .feature-card { margin: 0; }

/* Highlight box */
.highlight-box {
  border-left: 3px solid var(--pink);
  padding: 16px 20px;
  background: rgba(255, 77, 148, 0.08);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 20px 0;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 18px 0;
}
.faq-item h4 { color: var(--pink-soft); font-size: 1rem; margin-bottom: 8px; }
.faq-item p { font-size: 0.9rem; color: var(--text-muted); }

/* Page content (legal) */
.page-content {
  padding: 20px 0 60px;
}
.page-content h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 12px;
  color: var(--text);
}
.page-content h2 {
  font-size: 1.15rem;
  color: var(--pink-soft);
  margin: 28px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(255, 77, 148, 0.15);
}
.page-content h3 {
  font-size: 1rem;
  color: var(--text);
  margin: 18px 0 8px;
}
.page-content p, .page-content li {
  font-size: 0.93rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.page-content ul, .page-content ol {
  padding-left: 22px;
  margin-bottom: 14px;
}

/* Footer */
.site-footer {
  background: rgba(13, 6, 16, 0.9);
  border-top: 1px solid rgba(255, 77, 148, 0.15);
  padding: 40px 0 28px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 28px;
}
@media (min-width: 600px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
}
.footer-brand p { font-size: 0.88rem; color: var(--text-muted); margin-top: 10px; }
.footer-links h4 { font-size: 0.9rem; color: var(--pink-soft); margin-bottom: 12px; }
.footer-links a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 4px 0;
}
.footer-bottom {
  text-align: center;
  font-size: 0.8rem;
  color: rgba(201, 184, 212, 0.6);
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Error pages */
.error-page {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
}
.error-code {
  font-size: 5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--pink), var(--violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.error-page h1 { font-size: 1.4rem; margin: 16px 0 10px; }
.error-page p { color: var(--text-muted); margin-bottom: 24px; }

/* Internal link accent */
.internal-link { color: var(--pink); border-bottom: 1px dashed rgba(255, 77, 148, 0.4); }
.internal-link:hover { border-bottom-color: var(--pink); }