:root {
  --ink: #14121f;
  --ink-soft: #3d3852;
  --paper: #fff9f5;
  --paper-warm: #fff0ea;
  --coral: #ff3d6e;
  --coral-deep: #e8255a;
  --peach: #ff8fab;
  --teal: #2ec4b6;
  --violet: #7b5cff;
  --gold: #ffb347;
  --line: rgba(20, 18, 31, 0.1);
  --shadow: 0 18px 50px rgba(255, 61, 110, 0.14);
  --shadow-soft: 0 8px 28px rgba(20, 18, 31, 0.08);
  --nav-h: 58px;
  --radius: 20px;
  --radius-sm: 12px;
  --max-w: 1080px;
  --serif: "Songti SC", "Noto Serif SC", "STSong", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "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(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.92;
  overflow-x: hidden;
  background-image:
    radial-gradient(circle at 12% 8%, rgba(255, 61, 110, 0.07), transparent 42%),
    radial-gradient(circle at 88% 12%, rgba(123, 92, 255, 0.06), transparent 38%),
    radial-gradient(circle at 50% 95%, rgba(46, 196, 182, 0.05), transparent 45%),
    url("data:image/svg+xml,%3Csvg width='6' height='6' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='1' cy='1' r='0.6' fill='%23ff3d6e' opacity='0.06'/%3E%3C/svg%3E");
  background-attachment: fixed;
}

a { color: var(--coral-deep); text-decoration: none; transition: color .2s; }
a:hover { color: var(--violet); }

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

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

/* ── Header ── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(255, 249, 245, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 2px solid var(--ink);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--ink);
  letter-spacing: 0.06em;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--coral);
  box-shadow: 3px 3px 0 var(--ink);
}

.nav-toggle {
  display: none;
  background: var(--paper-warm);
  border: 2px solid var(--ink);
  color: var(--ink);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 8px;
}

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

.main-nav a {
  display: block;
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.86rem;
  font-weight: 500;
  transition: all .2s;
}

.main-nav a:hover,
.main-nav a.active {
  color: #fff;
  background: var(--coral);
  box-shadow: 2px 2px 0 var(--ink);
}

.btn-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--coral) 0%, var(--violet) 100%);
  color: #fff !important;
  font-weight: 700;
  font-size: 0.86rem;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  cursor: pointer;
  transition: transform .15s, box-shadow .15s;
  white-space: nowrap;
}

.btn-download:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink);
  color: #fff !important;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border-radius: 999px;
  border: 2px solid var(--ink);
  color: var(--ink) !important;
  font-weight: 600;
  font-size: 0.86rem;
  background: #fff;
  box-shadow: 3px 3px 0 var(--peach);
  transition: transform .15s;
}

.btn-outline:hover {
  transform: translateY(-2px);
  color: var(--coral-deep) !important;
}

/* ── Sticky ads ── */
.sticky-ads-bar {
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  z-index: 999;
  background: rgba(255, 249, 245, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--line);
  padding: 5px 0;
  transform: translateY(-120%);
  opacity: 0;
  transition: transform .28s ease, opacity .28s ease;
  pointer-events: none;
}

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

.sticky-ads-bar #ads-sticky {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 4px;
}

.sticky-ads-bar #ads-sticky > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: calc(25% - 4px);
}

.sticky-ads-bar #ads-sticky img {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--line);
}

.sticky-ads-bar #ads-sticky .caption {
  height: 12px;
  font-size: 9px;
  color: var(--ink-soft);
  text-align: center;
  max-width: 64px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (min-width: 768px) {
  .sticky-ads-bar #ads-sticky > div { width: calc(12.5% - 4px); }
  .sticky-ads-bar #ads-sticky img { width: 54px; height: 54px; }
}

/* ── Top ads ── */
.ads-top-wrap {
  padding-top: calc(var(--nav-h) + 12px);
}

#ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 6px;
}

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

#ads img {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: 16px;
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 rgba(20, 18, 31, 0.15);
  transition: transform .18s;
}

#ads img:hover { transform: translateY(-3px) rotate(-2deg); }

#ads .caption {
  height: 14px;
  font-size: 10px;
  color: var(--ink-soft);
  text-align: center;
  max-width: 90px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Hero ── */
.hero {
  padding: 28px 0 48px;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 100%;
  background: linear-gradient(180deg, var(--paper-warm) 0%, transparent 100%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  position: relative;
}

.hero-badge {
  display: inline-block;
  padding: 4px 14px;
  background: var(--ink);
  color: var(--peach);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  border-radius: 4px;
  margin-bottom: 14px;
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(1.65rem, 5vw, 2.45rem);
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 16px;
}

.hero h1 em {
  font-style: normal;
  color: var(--coral);
  text-decoration: underline;
  text-decoration-color: var(--peach);
  text-underline-offset: 6px;
}

.hero-lead {
  font-size: 1rem;
  color: var(--ink-soft);
  margin-bottom: 22px;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.stat-chip {
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  box-shadow: 3px 3px 0 var(--peach);
}

.stat-chip strong {
  display: block;
  font-size: 1.15rem;
  color: var(--coral);
  font-family: var(--serif);
}

.stat-chip span {
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  border-radius: var(--radius);
  border: 3px solid var(--ink);
  box-shadow: 8px 8px 0 var(--coral);
}

.hero-visual::after {
  content: "OFFICIAL";
  position: absolute;
  top: -10px;
  right: 16px;
  background: var(--teal);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 4px 10px;
  border: 2px solid var(--ink);
  border-radius: 4px;
  transform: rotate(4deg);
}

@media (min-width: 768px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
  .hero-stats { grid-template-columns: repeat(4, 1fr); }
}

/* ── Sections ── */
.section {
  padding: 44px 0;
  border-top: 1px dashed var(--line);
}

.section-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  color: var(--teal);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 3.5vw, 1.85rem);
  color: var(--ink);
  margin-bottom: 10px;
  line-height: 1.4;
}

.section-desc {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin-bottom: 24px;
  max-width: 720px;
}

/* Text blocks */
.prose p {
  margin-bottom: 14px;
  color: var(--ink-soft);
  text-align: justify;
}

.prose h3 {
  font-family: var(--serif);
  font-size: 1.12rem;
  color: var(--ink);
  margin: 22px 0 10px;
}

/* Split layout 3:7 */
.split-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
  margin-bottom: 28px;
}

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

.split-media img {
  border-radius: var(--radius);
  border: 2px solid var(--ink);
  box-shadow: 5px 5px 0 rgba(123, 92, 255, 0.25);
}

.split-media figcaption {
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-top: 8px;
  text-align: center;
}

@media (min-width: 768px) {
  .split-row { grid-template-columns: 3fr 7fr; }
  .split-row.img-right { grid-template-columns: 7fr 3fr; }
  .split-row.reverse .split-media { order: 0; }
}

/* Cards */
.card-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 20px 0;
}

.feature-card {
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  padding: 20px 18px;
  box-shadow: 4px 4px 0 var(--peach);
  transition: transform .2s;
}

.feature-card:hover { transform: translateY(-3px); }

.feature-card .card-num {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  background: var(--coral);
  color: #fff;
  font-weight: 800;
  font-size: 0.8rem;
  border-radius: 50%;
  border: 2px solid var(--ink);
  margin-bottom: 10px;
}

.feature-card h3 {
  font-family: var(--serif);
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.78;
}

@media (min-width: 600px) {
  .card-row.cols-2 { grid-template-columns: repeat(2, 1fr); }
  .card-row.cols-3 { grid-template-columns: repeat(3, 1fr); }
}

/* Bento showcase */
.bento {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 24px 0;
}

.bento-cell {
  background: linear-gradient(145deg, #fff, var(--paper-warm));
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow-soft);
}

.bento-cell.wide { grid-column: span 1; }

.bento-cell img {
  border-radius: var(--radius-sm);
  margin-top: 12px;
  border: 1px solid var(--line);
}

@media (min-width: 768px) {
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento-cell.wide { grid-column: span 2; }
}

/* Accordion FAQ */
.acc-list { margin-top: 16px; }

.acc-item {
  border: 2px solid var(--ink);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  overflow: hidden;
  background: #fff;
}

.acc-head {
  padding: 14px 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--paper-warm);
}

.acc-head::after {
  content: "+";
  font-size: 1.2rem;
  color: var(--coral);
  transition: transform .2s;
}

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

.acc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}

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

.acc-body p {
  padding: 0 16px 14px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

/* CTA band */
.cta-band {
  margin: 40px 0 20px;
  padding: 32px 24px;
  background: linear-gradient(120deg, var(--ink) 0%, #2a2540 100%);
  border-radius: var(--radius);
  border: 3px solid var(--coral);
  text-align: center;
  color: #fff;
}

.cta-band h2 {
  font-family: var(--serif);
  font-size: 1.4rem;
  margin-bottom: 10px;
}

.cta-band p {
  color: rgba(255,255,255,0.82);
  margin-bottom: 18px;
  font-size: 0.92rem;
}

/* Footer */
.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.75);
  padding: 40px 0 28px;
  margin-top: 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 28px;
}

.footer-grid h4 {
  color: var(--peach);
  font-family: var(--serif);
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.footer-grid ul { list-style: none; }

.footer-grid li { margin-bottom: 6px; }

.footer-grid a { color: rgba(255,255,255,0.7); font-size: 0.88rem; }
.footer-grid a:hover { color: var(--peach); }

.footer-intro {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.75;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 18px;
  font-size: 0.8rem;
  text-align: center;
  color: rgba(255,255,255,0.5);
}

@media (min-width: 600px) {
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ── Sub pages ── */
.page-with-ads main { padding-bottom: 48px; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 0.82rem;
  color: var(--ink-soft);
  padding: 16px 0 8px;
}

.breadcrumb a { color: var(--coral-deep); }
.breadcrumb span { opacity: 0.5; }

.page-header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 2px dashed var(--line);
}

.page-header h1 {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 4vw, 2rem);
  margin-bottom: 8px;
}

.page-header p { color: var(--ink-soft); font-size: 0.92rem; }

.legal-content h2 {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--ink);
  margin: 28px 0 12px;
  padding-left: 12px;
  border-left: 4px solid var(--coral);
}

.legal-content h3 {
  font-size: 1rem;
  margin: 18px 0 8px;
  color: var(--ink);
}

.legal-content p, .legal-content li {
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin-bottom: 12px;
  text-align: justify;
}

.legal-content ul, .legal-content ol {
  padding-left: 22px;
  margin-bottom: 14px;
}

/* Error pages */
.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 20px 60px;
}

.error-code {
  font-family: var(--serif);
  font-size: 5rem;
  color: var(--coral);
  line-height: 1;
  text-shadow: 4px 4px 0 var(--ink);
}

.error-page h1 {
  font-family: var(--serif);
  font-size: 1.4rem;
  margin: 16px 0 10px;
}

.error-page p {
  color: var(--ink-soft);
  margin-bottom: 20px;
}

/* Mobile nav */
@media (max-width: 767px) {
  .nav-toggle { display: block; }
  .header-cta { display: none; }

  .main-nav {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--paper);
    border-bottom: 2px solid var(--ink);
    padding: 12px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all .25s;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .main-nav ul { flex-direction: column; }
  .main-nav a { padding: 10px 14px; }
}

@media (min-width: 768px) {
  .header-cta { margin-left: 8px; }
}