/* ========== CSS Variables - Japanese Bathhouse Theme ========== */
:root {
  --bg: #F5F2EE;
  --bg-warm: #F0EBE3;
  --bg-white: #FFFFFF;
  --steam-light: #D7E3E8;
  --steam: #B0BEC5;
  --steam-dark: #78909C;
  --onsen: #4FC3F7;
  --onsen-deep: #0288D1;
  --wood: #8D6E63;
  --wood-dark: #5D4037;
  --wood-light: #A1887F;
  --text: #3E2723;
  --text-soft: #6D6D6D;
  --text-muted: #9E9E9E;
  --accent-dk: #5D4037;
  --accent-gold: #C8A264;
  --pink-fierce: #E57373;
  --danger-red: #D32F2F;
  --card-border: #E0D8CC;
  --card-shadow: 0 2px 12px rgba(0,0,0,0.06);
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Noto Serif SC", "STSong", "SimSun", serif;
  --max-width: 1200px;
  --header-height: 64px;
}

/* ========== Reset & Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--onsen-deep); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--wood-dark); }
img { max-width: 100%; height: auto; display: block; }

/* ========== Screen Reader Only ========== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--wood-dark);
  border-bottom: 3px solid var(--onsen);
  height: var(--header-height);
  display: flex;
  align-items: center;
}
.header-inner {
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
}
.header-logo img { width: 28px; height: 28px; }
.header-logo:hover { color: var(--onsen); }
.header-nav { display: flex; align-items: center; gap: 28px; }
.header-nav a {
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}
.header-nav a:hover, .header-nav a.active { color: var(--onsen); }
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--onsen);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 7px 18px;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
}
.header-cta:hover { background: var(--onsen-deep); color: #fff; transform: translateY(-1px); }

/* ========== Hero Section ========== */
.hero {
  padding: 60px 24px 80px;
  background: linear-gradient(135deg, var(--wood-dark) 0%, #4A3028 30%, var(--wood) 70%, #6D4C41 100%);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 30%, rgba(79,195,247,0.15) 0%, transparent 60%),
              url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="120" height="120" viewBox="0 0 120 120"><circle cx="60" cy="60" r="30" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/><circle cx="60" cy="60" r="50" fill="none" stroke="rgba(255,255,255,0.02)" stroke-width="0.5"/></svg>');
  opacity: 0.6;
}
.hero-inner { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; }
.hero-title-main {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 900;
  color: #fff;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
  margin-bottom: 12px;
  line-height: 1.3;
}
.hero-title-main .jp-subtitle {
  display: block;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--steam-light);
  margin-top: 6px;
  letter-spacing: 0.05em;
}
.hero-tagline {
  color: rgba(255,255,255,0.75);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto 24px;
  line-height: 1.7;
}

/* ========== Sub-page Hero ========== */
.hero-subpage { padding: 40px 24px 48px; }
.hero-subpage-title { font-size: 2rem; font-weight: 700; }

/* ========== Content Sections ========== */
.content-section {
  padding: 64px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.section-alt { background: var(--bg-warm); }
.section-no-padding { padding: 0; }

/* ========== Section Headings ========== */
.section-heading {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  color: var(--accent-dk);
  margin-bottom: 8px;
}
.section-subtext {
  text-align: center;
  color: var(--text-soft);
  margin-bottom: 24px;
}
.section-heading-alt {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  color: var(--accent-dk);
  margin-bottom: 20px;
}

/* Content section h2 styling (sub-page first content heading) */
.content-section h2:not(.section-heading):not(.section-heading-alt) {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

/* ========== Game Info Grid ========== */
.game-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  max-width: 900px;
  margin: 0 auto 16px;
}
.game-info-card {
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 20px 16px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}
.game-info-card:hover { transform: translateY(-2px); box-shadow: var(--card-shadow); }
.game-info-card .info-icon { font-size: 1.8rem; margin-bottom: 8px; }
.game-info-card .info-label { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 4px; }
.game-info-card .info-value { font-size: 0.95rem; font-weight: 700; color: var(--text); }
.game-info-desc {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 0;
}

/* ========== Prose Centered ========== */
.prose-centered {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 32px;
  color: var(--text-soft);
  line-height: 1.85;
  font-size: 0.95rem;
}
.prose-centered:last-of-type { margin-bottom: 40px; }

/* ========== Feature Cards ========== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}
.feature-card {
  background: #fff;
  border-radius: 12px;
  padding: 28px 24px;
  border-left: 4px solid var(--onsen);
  box-shadow: var(--card-shadow);
  transition: transform 0.2s;
}
.feature-card:hover { transform: translateY(-3px); }
.feature-card .fc-num {
  display: inline-block;
  background: var(--wood-dark);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
}
.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.feature-card p { color: var(--text-soft); font-size: 0.9rem; line-height: 1.7; }

/* ========== Screenshot Gallery ========== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
}
.gallery-item {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--card-shadow);
  transition: transform 0.2s;
}
.gallery-item:hover { transform: scale(1.02); }
.gallery-item img { width: 100%; height: auto; display: block; }
.gallery-item .gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: #fff;
  padding: 12px 16px;
  font-size: 0.85rem;
}

/* ========== Reviews ========== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}
.review-card {
  background: #fff;
  border-radius: 12px;
  padding: 28px 24px;
  box-shadow: var(--card-shadow);
  position: relative;
}
.review-card::before {
  content: "\201C";
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--steam);
  position: absolute;
  top: 8px;
  left: 16px;
  line-height: 1;
}
.review-card .review-text {
  color: var(--text-soft);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 12px;
  padding-left: 12px;
}
.review-card .review-author {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-style: italic;
}

/* ========== CTA Banner (index only) ========== */
.cta-banner {
  background: linear-gradient(135deg, var(--wood-dark) 0%, #4A3028 50%, var(--wood) 100%);
  padding: 56px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(79,195,247,0.12) 0%, transparent 60%);
}
.cta-banner-inner { position: relative; z-index: 1; }
.cta-banner h2 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.cta-banner p { color: rgba(255,255,255,0.75); margin-bottom: 24px; }
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--onsen);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 14px 36px;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
}
.cta-btn:hover { background: var(--onsen-deep); color: #fff; transform: translateY(-2px); }

/* ========== Content Section h2 ========== */
.content-section h2 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent-dk);
  margin: 40px 0 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--steam-light);
}
.content-section h2:first-of-type { margin-top: 0; }
.content-section h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin: 24px 0 8px;
}
.content-section p {
  color: var(--text-soft);
  line-height: 1.85;
  margin-bottom: 16px;
}

/* ========== Chapter Title (story.html) ========== */
.chapter-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-dk);
  margin: 28px 0 10px;
}

/* ========== Guide Sections ========== */
.guide-intro {
  color: var(--text-soft);
  line-height: 1.85;
  margin-bottom: 24px;
  font-size: 0.95rem;
}
.route-desc {
  color: var(--text-soft);
  line-height: 1.85;
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.route-heading {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--wood-dark);
  margin: 24px 0 10px;
}

/* ========== Guide Step Counter ========== */
.guide-steps-wrapper { counter-reset: guide-step; }
.guide-step {
  background: #fff;
  border-radius: 10px;
  padding: 20px 24px;
  margin-bottom: 16px;
  box-shadow: var(--card-shadow);
  border-left: 4px solid var(--onsen);
}
.guide-step h3::before {
  counter-increment: guide-step;
  content: "步骤 " counter(guide-step) "：";
  color: var(--wood-dark);
  font-weight: 700;
}

/* ========== Info Box ========== */
.info-box {
  background: rgba(79,195,247,0.08);
  border: 1px solid rgba(79,195,247,0.2);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 20px 0;
}
.info-box strong { color: var(--wood-dark); }
.info-box p { margin-bottom: 0; }

/* ========== Content List Classes ========== */
.content-list { list-style: disc; padding-left: 20px; }
.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); }

/* ========== Colored Strong ========== */
.strong-pink { color: var(--pink-fierce); }
.strong-red { color: var(--danger-red); }
.strong-gold { color: var(--accent-gold); }
.strong-muted { color: var(--text-muted); }
.strong-navy { color: var(--wood-dark); }

/* ========== Table Highlight ========== */
.td-highlight { color: var(--pink-fierce); font-weight: 700; }

/* ========== System Requirements ========== */
.sys-reqs-h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--wood-dark);
  margin-top: 24px;
  margin-bottom: 12px;
}
.sys-reqs-h3:first-of-type { margin-top: 8px; }
.sys-note { margin-top: 20px; color: var(--text-muted); font-size: 0.9rem; }

/* ========== Table Scroll Wrapper ========== */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-scroll table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}
.table-scroll th {
  background: var(--wood-dark);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-size: 0.9rem;
  font-weight: 600;
}
.table-scroll td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--card-border);
  font-size: 0.9rem;
  color: var(--text-soft);
}
.table-scroll tr:last-child td { border-bottom: none; }

/* ========== Section Subheading ========== */
.section-subheading {
  text-align: center;
  margin: 40px 0 24px;
}
.section-title-group-spaced { margin-top: 48px; }

/* ========== FAQ ========== */
.faq-intro { color: var(--text-soft); margin-bottom: 32px; }
.faq-note { margin-top: 16px; }
.faq-list { max-width: 900px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border-radius: 10px;
  margin-bottom: 12px;
  box-shadow: var(--card-shadow);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 24px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.2s;
}
.faq-question:hover { background: var(--bg-warm); }
.faq-question .faq-icon {
  font-size: 1.2rem;
  color: var(--onsen);
  transition: transform 0.3s;
  flex-shrink: 0;
  margin-left: 12px;
}
.faq-item.open .faq-question .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 24px;
}
.faq-item.open .faq-answer {
  max-height: 800px;
  padding: 0 24px 20px;
}
.faq-answer p { color: var(--text-soft); font-size: 0.9rem; line-height: 1.8; }

/* ========== Character Cards ========== */
.char-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}
.char-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: transform 0.2s;
}
.char-card:hover { transform: translateY(-3px); }
.char-card .char-img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  background: var(--steam-light);
}
.char-card .char-info { padding: 20px; }
.char-card .char-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.char-card .char-role {
  display: inline-block;
  background: var(--wood-dark);
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
}
.char-card .char-traits { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.char-card .char-trait {
  background: rgba(79,195,247,0.1);
  color: var(--onsen-deep);
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 4px;
}
.char-card .char-desc { color: var(--text-soft); font-size: 0.85rem; line-height: 1.7; }

/* ========== Relationship Chart ========== */
.relation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  max-width: 1000px;
  margin: 0 auto;
}
.relation-item {
  background: #fff;
  border-left: 4px solid var(--onsen);
  border-radius: 8px;
  padding: 16px 20px;
  box-shadow: var(--card-shadow);
}
.relation-item .rel-names {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--wood-dark);
  margin-bottom: 4px;
}
.relation-item .rel-desc { color: var(--text-soft); font-size: 0.85rem; }

/* ========== Story Branching ========== */
.branch-card {
  background: #fff;
  border-radius: 10px;
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--card-shadow);
  border-top: 3px solid var(--onsen);
}
.branch-card h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--wood-dark);
  margin-bottom: 8px;
}
.branch-card p { color: var(--text-soft); font-size: 0.9rem; line-height: 1.7; }

/* ========== Ending Cards ========== */
.ending-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
}
.ending-card {
  background: #fff;
  border-radius: 10px;
  padding: 24px;
  box-shadow: var(--card-shadow);
  text-align: center;
}
.ending-card .ending-icon { font-size: 2.5rem; margin-bottom: 12px; }
.ending-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--wood-dark);
  margin-bottom: 8px;
}
.ending-card p { color: var(--text-soft); font-size: 0.85rem; line-height: 1.7; }

/* ========== Footer ========== */
.site-footer {
  background: var(--wood-dark);
  padding: 24px;
  text-align: center;
}
.site-footer p {
  color: rgba(255,255,255,0.5);
  font-size: 0.8rem;
}

/* ========== Lightbox ========== */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.9);
  align-items: center;
  justify-content: center;
}
.lightbox.active { display: flex; }
.lightbox img { max-width: 90vw; max-height: 85vh; border-radius: 8px; }
.lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.5rem;
  cursor: pointer;
  line-height: 1;
}
.lightbox-caption {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
}

/* ========== Responsive - 768px ========== */
@media (max-width: 768px) {
  .header-nav { gap: 16px; }
  .header-nav a { font-size: 0.8rem; }
  .header-cta { font-size: 0.78rem; padding: 6px 14px; }
  .hero { padding: 40px 20px 56px; }
  .hero-title-main { font-size: 2rem; }
  .hero-subpage-title { font-size: 1.6rem; }
  .hero-tagline { font-size: 0.9rem; }
  .content-section { padding: 48px 20px; }
  .section-heading, .section-heading-alt { font-size: 1.6rem; }
  .content-section h2:not(.section-heading):not(.section-heading-alt) { font-size: 1.4rem; }
  .game-info-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .game-info-card { padding: 14px 10px; }
  .feature-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .char-grid { grid-template-columns: repeat(2, 1fr); }
  .ending-grid { grid-template-columns: 1fr; }
  .cta-banner h2 { font-size: 1.4rem; }
  .cta-btn { font-size: 0.95rem; padding: 12px 28px; }
}

/* ========== Responsive - 480px ========== */
@media (max-width: 480px) {
  .header-inner { padding: 0 12px; }
  .header-logo { font-size: 0.85rem; gap: 6px; }
  .header-logo img { width: 22px; height: 22px; }
  .header-nav { gap: 10px; }
  .header-nav a { font-size: 0.72rem; }
  .header-cta { font-size: 0.7rem; padding: 5px 10px; }
  .hero { padding: 32px 16px 44px; }
  .hero-title-main { font-size: 1.6rem; }
  .hero-subpage-title { font-size: 1.4rem; }
  .hero-tagline { font-size: 0.82rem; }
  .content-section { padding: 36px 16px; }
  .section-heading, .section-heading-alt { font-size: 1.35rem; }
  .content-section h2:not(.section-heading):not(.section-heading-alt) { font-size: 1.2rem; }
  .game-info-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .game-info-card { padding: 12px 8px; }
  .char-grid { grid-template-columns: 1fr; }
  .cta-banner { padding: 40px 16px; }
  .cta-banner h2 { font-size: 1.2rem; }
  .guide-step { padding: 16px; }
}