:root {
  --violet-deep: #5a189a;
  --violet-mid: #7b2cbf;
  --magenta: #e040a0;
  --magenta-hot: #ff4da6;
  --coral: #ff6b8a;
  --cyan: #00d4c8;
  --lavender: #f3e8ff;
  --cream: #fff8fc;
  --ink: #2d1b3d;
  --ink-soft: #5c4a6e;
  --glass: rgba(255, 255, 255, 0.72);
  --border: rgba(123, 44, 191, 0.18);
  --shadow: 0 12px 40px rgba(90, 24, 154, 0.12);
  --radius: 20px;
  --nav-h: 58px;
  --max: 920px;
  --display: "M PLUS Rounded 1c", "PingFang SC", "Microsoft YaHei", sans-serif;
  --body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

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

body {
  font-family: var(--body);
  background: var(--cream);
  color: var(--ink);
  line-height: 1.85;
  min-height: 100vh;
  background-image:
    radial-gradient(circle at 12% 8%, rgba(224, 64, 160, 0.09), transparent 42%),
    radial-gradient(circle at 88% 92%, rgba(0, 212, 200, 0.08), transparent 38%),
    repeating-radial-gradient(circle at 0 0, rgba(123, 44, 191, 0.03) 0 1px, transparent 1px 14px);
}

a { color: var(--violet-mid); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--magenta-hot); }

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

.wrap { width: min(100% - 24px, var(--max)); margin: 0 auto; }

/* Header */
.site-head {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 248, 252, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 24px rgba(90, 24, 154, 0.06);
}

.head-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 8px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-family: var(--display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  border: 2px solid var(--magenta);
  box-shadow: 0 0 0 3px rgba(224, 64, 160, 0.15);
}

.nav-toggle {
  display: none;
  background: var(--lavender);
  border: 1px solid var(--border);
  color: var(--ink);
  padding: 6px 10px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 1.1rem;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 2px;
  flex-wrap: wrap;
}

.main-nav a {
  display: block;
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.86rem;
  font-weight: 500;
}

.main-nav a:hover,
.main-nav a.active {
  color: #fff;
  background: linear-gradient(120deg, var(--magenta), var(--violet-mid));
}

.btn-dl {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  background: linear-gradient(135deg, var(--magenta-hot), var(--violet-deep));
  color: #fff !important;
  border-radius: 999px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.84rem;
  box-shadow: 0 6px 22px rgba(224, 64, 160, 0.35);
  white-space: nowrap;
}

.btn-dl:hover { color: #fff; transform: translateY(-1px); }

/* Sticky ads */
.sticky-bar {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(255, 248, 252, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 6px 8px;
  transform: translateY(-120%);
  opacity: 0;
  transition: transform 0.26s, opacity 0.26s;
  pointer-events: none;
}

.sticky-bar.visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.sticky-bar #sticky-ads {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px;
}

/* Ads */
.ads-block {
  padding: 12px 0 8px;
  background: linear-gradient(180deg, rgba(243, 232, 255, 0.9), transparent);
  border-bottom: 1px dashed var(--border);
}

#ads, #sticky-ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
}

#ads > div, #sticky-ads > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 70px;
}

#ads img, #sticky-ads img {
  width: 65px;
  height: 65px;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 6px 18px rgba(45, 27, 61, 0.14);
  transition: transform 0.18s;
}

#ads a, #sticky-ads a { border-radius: 16px; }

#ads img:hover, #sticky-ads img:hover {
  transform: translateY(-3px) scale(1.04);
}

#ads .caption, #sticky-ads .caption {
  height: 15px;
  font-size: 11px;
  color: var(--ink-soft);
  text-align: center;
  max-width: 72px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (min-width: 769px) {
  #sticky-ads > div { width: calc(12.5% - 8px); min-width: 70px; }
}

@media (max-width: 768px) {
  #sticky-ads > div { width: calc(25% - 6px); min-width: 68px; }
}

/* Breadcrumb */
.breadcrumb {
  padding: 14px 0 0;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.breadcrumb a { color: var(--ink-soft); }
.breadcrumb strong { color: var(--magenta); font-weight: 600; }

/* Hero */
.hero {
  padding: 32px 0 40px;
  position: relative;
}

.hero-badge {
  display: inline-block;
  padding: 5px 14px;
  background: linear-gradient(90deg, rgba(224, 64, 160, 0.12), rgba(0, 212, 200, 0.1));
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.78rem;
  color: var(--violet-mid);
  font-weight: 600;
  margin-bottom: 14px;
}

.hero h1 {
  font-family: var(--display);
  font-size: clamp(1.45rem, 5vw, 2rem);
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 1.02rem;
  color: var(--ink-soft);
  max-width: 680px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.btn-ghost {
  display: inline-flex;
  padding: 8px 18px;
  border: 2px solid var(--violet-mid);
  border-radius: 999px;
  color: var(--violet-mid) !important;
  font-weight: 600;
  font-size: 0.88rem;
}

.btn-ghost:hover { background: var(--lavender); }

/* Sections */
.section {
  padding: 36px 0;
}

.section:nth-child(even) {
  background: linear-gradient(180deg, rgba(243, 232, 255, 0.45), transparent);
}

.sec-title {
  font-family: var(--display);
  font-size: clamp(1.2rem, 4vw, 1.55rem);
  color: var(--ink);
  margin-bottom: 8px;
}

.sec-sub {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin-bottom: 22px;
}

/* Prose */
.article {
  font-size: 0.96rem;
  color: var(--ink);
}

.article p { margin-bottom: 1.1em; }

.article h3 {
  font-family: var(--display);
  font-size: 1.08rem;
  color: var(--violet-deep);
  margin: 1.6em 0 0.7em;
}

.article ul, .article ol {
  margin: 0.8em 0 1.2em 1.4em;
}

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

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin: 20px 0;
}

.card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 16px;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(90, 24, 154, 0.16);
}

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--magenta), var(--cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.card h4 {
  font-family: var(--display);
  font-size: 0.95rem;
  margin-bottom: 6px;
  color: var(--ink);
}

.card p {
  font-size: 0.86rem;
  color: var(--ink-soft);
  line-height: 1.7;
}

/* Media layout 3:7 */
.media-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: start;
  margin: 22px 0;
}

@media (min-width: 768px) {
  .media-row.has-img {
    grid-template-columns: 3fr 7fr;
  }
  .media-row.img-right {
    grid-template-columns: 7fr 3fr;
  }
  .media-row.img-right .media-fig { order: 2; }
  .media-row.img-right .media-body { order: 1; }
}

.media-fig {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: #fff;
}

.media-fig img { width: 100%; }

.media-cap {
  padding: 10px 12px;
  font-size: 0.78rem;
  color: var(--ink-soft);
  background: var(--lavender);
  text-align: center;
}

/* Stats ribbon */
.stat-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 22px 0;
}

@media (min-width: 600px) {
  .stat-row { grid-template-columns: repeat(4, 1fr); }
}

.stat-box {
  text-align: center;
  padding: 14px 8px;
  background: linear-gradient(145deg, #fff, var(--lavender));
  border-radius: 14px;
  border: 1px solid var(--border);
}

.stat-num {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--magenta);
}

.stat-label {
  font-size: 0.76rem;
  color: var(--ink-soft);
  margin-top: 4px;
}

/* FAQ */
.faq-list { margin-top: 18px; }

.faq-item {
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 10px;
  overflow: hidden;
  background: #fff;
}

.faq-q {
  width: 100%;
  text-align: left;
  padding: 14px 16px;
  background: transparent;
  border: none;
  font-family: var(--display);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-q::after { content: "+"; color: var(--magenta); font-size: 1.2rem; }
.faq-item.open .faq-q::after { content: "−"; }

.faq-a {
  display: none;
  padding: 0 16px 14px;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.faq-item.open .faq-a { display: block; }

/* Inner page */
.page-hero {
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.page-hero h1 {
  font-family: var(--display);
  font-size: clamp(1.3rem, 4vw, 1.7rem);
}

.legal-doc h2 {
  font-family: var(--display);
  font-size: 1.1rem;
  color: var(--violet-deep);
  margin: 2em 0 0.8em;
}

.legal-doc h2:first-child { margin-top: 0; }

/* Error pages */
.err-page {
  text-align: center;
  padding: 60px 0 80px;
}

.err-code {
  font-family: var(--display);
  font-size: 5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--magenta), var(--violet-mid));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.err-page h1 {
  font-family: var(--display);
  font-size: 1.3rem;
  margin: 16px 0 10px;
}

.err-page p {
  color: var(--ink-soft);
  max-width: 420px;
  margin: 0 auto 24px;
  font-size: 0.92rem;
}

/* Footer */
.site-foot {
  margin-top: 48px;
  padding: 32px 0 40px;
  background: linear-gradient(180deg, transparent, rgba(90, 24, 154, 0.06));
  border-top: 1px solid var(--border);
}

.foot-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 600px) {
  .foot-grid { grid-template-columns: 2fr 1fr 1fr; }
}

.foot-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-weight: 800;
  margin-bottom: 8px;
}

.foot-brand img { width: 32px; height: 32px; border-radius: 8px; }

.foot-links ul { list-style: none; }
.foot-links li { margin-bottom: 6px; }
.foot-links a { font-size: 0.86rem; color: var(--ink-soft); }

.foot-copy {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
  font-size: 0.78rem;
  color: var(--ink-soft);
  text-align: center;
}

/* Mobile nav */
@media (max-width: 720px) {
  .nav-toggle { display: block; }

  .main-nav {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(255, 248, 252, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 10px 14px 14px;
    display: none;
  }

  .main-nav.open { display: block; }

  .main-nav ul { flex-direction: column; gap: 4px; }

  .head-row .btn-dl { display: none; }
}