/* === 爱语心通 — 夏日乡村恋爱主题 === */
:root {
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Noto Serif SC", "STSong", "SimSun", serif;
  --bg: #FDF8F0;
  --bg-card: #FEFCF8;
  --bg-header: #5C4B3A;
  --text: #3A3226;
  --text-soft: #6B5E4F;
  --text-light: #8C7E6F;
  --accent: #E0616D;
  --accent-dark: #C7495B;
  --accent-light: #FCE4E7;
  --green: #7CAF8A;
  --green-light: #E8F5EB;
  --gold: #C49A3C;
  --gold-light: #FDF3DA;
  --border: #E8DCC8;
  --shadow: 0 2px 12px rgba(58, 50, 38, 0.06);
  --radius: 10px;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  min-height: 100vh;
}
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(224, 97, 109, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 60%, rgba(124, 175, 138, 0.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}
a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-dark); }
img { max-width: 100%; height: auto; display: block; }

/* Utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-header);
  border-bottom: 3px solid var(--accent);
  box-shadow: 0 2px 16px rgba(0,0,0,0.15);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: #F5E6D0;
}
.header-logo img { width: 32px; height: 32px; border-radius: 6px; }
.header-nav { display: flex; align-items: center; gap: 28px; }
.header-nav a {
  color: #D4C4AA;
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}
.header-nav a:hover,
.header-nav a.active { color: #FFF; }
.header-nav a.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #FFF !important;
  padding: 8px 20px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s, transform 0.2s;
}
.header-cta:hover { background: var(--accent-dark); transform: translateY(-1px); }

/* Hero — Index */
.hero {
  position: relative;
  z-index: 1;
  background: linear-gradient(135deg, #7CAF8A 0%, #5C9A6E 30%, #4A7A5A 60%, #E0616D 100%);
  padding: 80px 24px 100px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(255,255,255,0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 80%, rgba(255,255,255,0.08) 0%, transparent 50%);
}
.hero::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 60px;
  background: linear-gradient(to top, var(--bg), transparent);
}
.hero-content { position: relative; z-index: 2; max-width: 800px; margin: 0 auto; }
.hero-title-main {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: #FFF;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
  margin-bottom: 14px;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 8px;
  font-weight: 400;
}
.hero-tagline {
  font-size: 1rem;
  color: rgba(255,255,255,0.75);
  font-style: italic;
}

/* Hero — Sub-pages */
.hero-subpage {
  background: linear-gradient(135deg, #6B5E4F 0%, #5C4B3A 60%, #3A3226 100%);
  padding: 50px 24px 64px;
}
.hero-subpage-title {
  font-size: 2.2rem;
  font-weight: 700;
}

/* Content Sections */
.content-section {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
  padding: 48px 24px;
}
.content-section h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent-light);
}
.content-section h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  margin: 32px 0 12px;
}
.content-section p {
  color: var(--text-soft);
  margin-bottom: 16px;
  font-size: 1rem;
}

/* Feature Cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin: 32px 0;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(58, 50, 38, 0.1);
}
.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--accent);
  margin: 0 0 8px;
}
.feature-card p {
  color: var(--text-soft);
  font-size: 0.95rem;
  margin: 0;
}
.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 10px;
  display: block;
}

/* Screenshot Gallery */
.screenshot-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin: 28px 0;
}
.screenshot-gallery img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.2s;
}
.screenshot-gallery img:hover { transform: scale(1.02); }

/* CTA Banner — Index only */
.cta-banner {
  position: relative;
  z-index: 1;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  padding: 48px 24px;
  text-align: center;
  margin-top: 0;
}
.cta-banner h2 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: #FFF;
  margin-bottom: 8px;
  border: none;
  padding: 0;
}
.cta-banner p { color: rgba(255,255,255,0.85); margin-bottom: 20px; }
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FFF;
  color: var(--accent-dark) !important;
  padding: 14px 36px;
  border-radius: 28px;
  font-size: 1.1rem;
  font-weight: 700;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.cta-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(0,0,0,0.2); }

/* Character Cards */
.char-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin: 28px 0;
}
.char-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  border-top: 4px solid var(--accent);
  transition: transform 0.2s;
}
.char-card:hover { transform: translateY(-3px); }
.char-card:nth-child(4n+2) { border-top-color: var(--green); }
.char-card:nth-child(4n+3) { border-top-color: var(--gold); }
.char-card:nth-child(4n+4) { border-top-color: #7B8CC4; }
.char-card-body { padding: 20px 24px; }
.char-card-body h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--text);
  margin: 0 0 6px;
}
.char-card-body .char-role {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 10px;
  margin-bottom: 8px;
}
.char-card-body p {
  color: var(--text-soft);
  font-size: 0.92rem;
  margin: 0;
}
.char-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}
.char-tags span {
  background: var(--green-light);
  color: var(--green);
  font-size: 0.78rem;
  padding: 2px 10px;
  border-radius: 10px;
}

/* Table */
.table-scroll {
  overflow-x: auto;
  margin: 20px 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.content-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
}
.content-table th,
.content-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.93rem;
}
.content-table th {
  background: var(--bg-header);
  color: #F5E6D0;
  font-weight: 600;
  font-family: var(--font-serif);
}
.content-table tr:last-child td { border-bottom: none; }
.content-table tr:nth-child(even) { background: rgba(124, 175, 138, 0.05); }

/* Guide Steps */
.guide-step {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin: 20px 0;
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow);
}
.guide-step h3 {
  font-family: var(--font-serif);
  color: var(--accent);
  font-size: 1.25rem;
  margin: 0 0 8px;
}
.guide-step .step-num {
  display: inline-block;
  background: var(--accent);
  color: #FFF;
  width: 28px;
  height: 28px;
  line-height: 28px;
  text-align: center;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.9rem;
  margin-right: 8px;
}
.guide-intro { color: var(--text-soft); font-size: 1.05rem; margin-bottom: 24px; }
.route-heading {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--accent-dark);
  margin: 20px 0 8px;
}
.route-desc { color: var(--text-soft); font-size: 0.95rem; margin-bottom: 12px; }

/* Story Sections */
.story-block {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  margin: 24px 0;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--green);
}
.story-block:nth-child(odd) { border-left-color: var(--accent); }
.story-block:nth-child(3n+2) { border-left-color: var(--gold); }
.story-block h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--text);
  margin: 0 0 10px;
}
.chapter-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  margin: 36px 0 12px;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
}

/* FAQ Accordion */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--bg-card);
}
.faq-question {
  display: block;
  width: 100%;
  text-align: left;
  padding: 16px 20px;
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  position: relative;
}
.faq-question::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  color: var(--accent);
  transition: transform 0.2s;
}
.faq-answer {
  padding: 0 20px 16px;
  color: var(--text-soft);
  font-size: 0.93rem;
  display: none;
}
.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-question::after {
  content: "−";
}

/* Sys Reqs heading */
.sys-reqs-h3 {
  font-family: var(--font-serif) !important;
  font-size: 1.2rem !important;
  font-weight: 700;
  color: var(--text);
  margin: 28px 0 10px;
}
.sys-reqs-h3:first-of-type { margin-top: 16px; }

/* Section subheading */
.section-subheading {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin: 40px 0 20px;
}

/* Strong highlights */
.strong-pink { color: var(--accent); }
.strong-red { color: #C7495B; }
.strong-gold { color: var(--gold); }
.strong-muted { color: var(--text-light); }
.strong-navy { color: #5C6B8A; }

/* Content lists */
.content-list { list-style: disc; padding-left: 24px; }
.content-list-num { list-style: decimal; padding-left: 24px; }
.content-li { margin-bottom: 5px; color: var(--text-soft); }
.content-li-sm { margin-bottom: 4px; color: var(--text-soft); }
.content-li-md { margin-bottom: 8px; color: var(--text-soft); }
.content-li-lg { margin-bottom: 10px; color: var(--text-soft); }

/* Table highlights */
.td-highlight { color: var(--accent); font-weight: 700; }

/* Tips box */
.tip-box {
  background: var(--gold-light);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 16px 0;
  color: var(--text-soft);
  font-size: 0.93rem;
}

/* Player quote */
.player-quotes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 24px 0;
}
.player-quote {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
}
.player-quote p {
  font-style: italic;
  color: var(--text-soft);
  font-size: 0.95rem;
}
.player-quote .quote-author {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  margin-top: 8px;
}

/* Divider */
.section-divider {
  text-align: center;
  margin: 40px 0;
  color: var(--accent-light);
  font-size: 1.5rem;
  letter-spacing: 8px;
}

/* Info Cards */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 24px 0;
}
.info-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
}
.info-card .info-value {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
}
.info-card .info-label {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 4px;
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 1;
  background: var(--bg-header);
  color: #B8A890;
  text-align: center;
  padding: 24px;
  font-size: 0.9rem;
}

/* Lightbox */
.lightbox-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 200;
  align-items: center;
  justify-content: center;
}
.lightbox-overlay.active {
  display: flex;
}
.lightbox-overlay img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 8px;
}
.lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  color: #FFF;
  font-size: 2rem;
  cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title-main { font-size: 2rem; }
  .hero-subpage-title { font-size: 1.6rem; }
  .content-section h2 { font-size: 1.6rem; }
  .header-nav { gap: 14px; }
  .header-nav a { font-size: 0.85rem; }
  .feature-grid,
  .char-grid { grid-template-columns: 1fr; }
  .screenshot-gallery { grid-template-columns: 1fr 1fr; }
  .info-grid { grid-template-columns: 1fr 1fr; }
  .player-quotes { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .hero { padding: 48px 16px 64px; }
  .hero-title-main { font-size: 1.6rem; }
  .hero-subpage { padding: 32px 16px 48px; }
  .hero-subpage-title { font-size: 1.3rem; }
  .content-section { padding: 32px 16px; }
  .content-section h2 { font-size: 1.4rem; }
  .content-section h3 { font-size: 1.15rem; }
  .header-inner { padding: 0 12px; }
  .header-cta { padding: 6px 14px; font-size: 0.85rem; }
  .screenshot-gallery { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr 1fr; }
  .cta-btn { padding: 12px 28px; font-size: 1rem; }
  .cta-banner h2 { font-size: 1.4rem; }
  .section-subheading { font-size: 1.2rem; }
}