:root {
  --bg: #f7f5f2;
  --bg-alt: #efebe6;
  --surface: #ffffff;
  --text: #1c1917;
  --text-muted: #57534e;
  --accent: #c23a4b;
  --accent-dark: #9a2d3b;
  --accent-soft: #fce8eb;
  --border: #e7e2dc;
  --header-bg: rgba(255, 255, 255, 0.92);
  --shadow: 0 8px 30px rgba(28, 25, 23, 0.06);
  --radius: 12px;
  --max: 1080px;
  --font-display: "Noto Serif SC", "Songti SC", Georgia, serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, #fce8eb 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, #efe8df 0%, transparent 50%),
    var(--bg);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-dark);
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
  padding: 10px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-menu a {
  display: block;
  padding: 0.45rem 0.85rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  border-radius: 8px;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--accent);
  background: var(--accent-soft);
}

/* Hero */
.hero {
  padding: 3.5rem 0 2.5rem;
  text-align: center;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
  animation: fadeUp 0.7s ease both;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 600;
  color: var(--text);
  line-height: 1.45;
  margin-bottom: 1rem;
  max-width: 820px;
  margin-inline: auto;
  animation: fadeUp 0.7s ease 0.1s both;
}

.hero-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 680px;
  margin: 0 auto 1.75rem;
  animation: fadeUp 0.7s ease 0.2s both;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  animation: fadeUp 0.7s ease 0.3s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.6rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.98rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 20px rgba(194, 58, 75, 0.28);
}

.btn-primary:hover {
  background: var(--accent-dark);
  color: #fff;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* Sections */
.section {
  padding: 3rem 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 700;
  margin-bottom: 0.6rem;
  line-height: 1.35;
}

.section-lead {
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 720px;
}

.prose h2 {
  font-family: var(--font-display);
  font-size: 1.55rem;
  margin: 2.2rem 0 0.8rem;
  scroll-margin-top: 80px;
}

.prose h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 1.6rem 0 0.6rem;
  color: var(--text);
  scroll-margin-top: 80px;
}

.prose p {
  margin-bottom: 1rem;
  color: var(--text);
}

.prose ul,
.prose ol {
  margin: 0.75rem 0 1.25rem 1.25rem;
}

.prose li {
  margin-bottom: 0.45rem;
  color: var(--text);
}

.prose strong {
  color: var(--text);
  font-weight: 600;
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.feature-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.35rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.feature-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.feature-item h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

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

/* Screenshot gallery */
.shot-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.shot-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.shot-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.shot-card img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
  background: var(--bg-alt);
}

.shot-card .shot-body {
  padding: 1.1rem 1.2rem 1.35rem;
}

.shot-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.shot-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin: 0;
}

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

.shot-grid-wide .shot-card img {
  aspect-ratio: 9 / 16;
}

/* Channel list */
.channel-list {
  display: grid;
  gap: 1rem;
}

.channel-item {
  background: var(--surface);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.15rem 1.3rem;
}

.channel-item h3 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  margin-bottom: 0.35rem;
}

.channel-item p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
}

/* Steps */
.steps {
  display: grid;
  gap: 1.25rem;
  counter-reset: step;
}

.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  margin-bottom: 0.35rem;
}

.step p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
}

/* VIP pricing */
.vip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.vip-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.vip-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.vip-card img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: top;
}

.vip-card .vip-body {
  padding: 0.9rem;
}

.vip-card h3 {
  font-size: 0.98rem;
  font-family: var(--font-display);
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 0.85rem;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.3rem;
}

.faq-item h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 0.45rem;
}

.faq-item p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  text-align: center;
}

.stat-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1rem;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* TOC / internal links */
.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
  margin-bottom: 2rem;
}

.toc h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.toc ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.4rem 1rem;
  margin: 0;
}

.toc a {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.toc a:hover {
  color: var(--accent);
}

/* Related links */
.related {
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  margin-top: 2.5rem;
}

.related h2 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

.related ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.25rem;
  margin: 0;
}

.related a {
  font-weight: 500;
}

/* CTA banner */
.cta-banner {
  text-align: center;
  padding: 3rem 1.5rem;
  background:
    linear-gradient(135deg, #9a2d3b 0%, #c23a4b 55%, #d45a68 100%);
  color: #fff;
  border-radius: var(--radius);
  margin: 2rem 0;
}

.cta-banner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  margin-bottom: 0.6rem;
}

.cta-banner p {
  opacity: 0.92;
  margin-bottom: 1.4rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--accent-dark);
  box-shadow: none;
}

.cta-banner .btn-primary:hover {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

/* Page header for subpages */
.page-hero {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.1rem);
  margin-bottom: 0.5rem;
}

.page-hero p {
  color: var(--text-muted);
  max-width: 640px;
}

.page-content {
  padding-bottom: 3.5rem;
}

/* Error pages */
.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1rem;
}

.error-page .error-code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.error-page h1 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.error-page p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: 420px;
  margin-inline: auto;
}

/* Footer */
.site-footer {
  background: #1c1917;
  color: #a8a29e;
  padding: 2.5rem 0 1.5rem;
  margin-top: 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.footer-brand img {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.footer-col h3 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

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

.footer-col li {
  margin-bottom: 0.4rem;
}

.footer-col a {
  color: #a8a29e;
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid #292524;
  padding-top: 1.25rem;
  font-size: 0.85rem;
  text-align: center;
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile */
@media (max-width: 900px) {
  .shot-grid-wide {
    grid-template-columns: repeat(2, 1fr);
  }

  .vip-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem;
    gap: 0.15rem;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
    box-shadow: var(--shadow);
  }

  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-menu a {
    padding: 0.85rem 1rem;
  }

  .feature-grid,
  .shot-grid,
  .shot-grid-wide,
  .toc ul {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 2.5rem 0 2rem;
  }

  .section {
    padding: 2.25rem 0;
  }
}

@media (max-width: 520px) {
  .vip-grid,
  .stats,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .shot-grid-wide {
    grid-template-columns: 1fr;
  }
}

/* APP ads */
.ads-wrap {
  padding: 0.85rem 0 0.25rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

#applist {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.applist-title {
  text-align: center;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.55rem;
  letter-spacing: 0.04em;
}

#ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.35rem 0.55rem;
  background: transparent;
  margin: 0.35rem 0 0.5rem;
}

#ads > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 72px;
  box-sizing: border-box;
}

#ads figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#ads a {
  display: inline-block;
  text-decoration: none;
  border-radius: 15px;
  -webkit-tap-highlight-color: transparent;
}

#ads img {
  width: 65px;
  height: 65px;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 6px 18px rgba(24, 24, 24, 0.12);
  transition: transform 180ms ease, box-shadow 180ms ease;
  display: block;
  border: none;
  background: #fff;
}

#ads img:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 10px 24px rgba(24, 24, 24, 0.18);
}

#ads figcaption,
#ads .caption {
  height: 15px;
  font-size: 11px;
  color: #666;
  text-align: center;
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-top: 0.35rem;
}