/* ============================================================
   沙漠追猎者 Desert Stalker — Desert Wasteland Theme
   Sandstorm golds · Heat-haze oranges · Weathered leather browns
   Post-apocalyptic rugged aesthetic on light sandy background
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
  --bg: #f5ede0;
  --bg-alt: #ede0ce;
  --accent: #d4a843;
  --accent-hover: #b8860b;
  --accent-light: #f0e0b8;
  --accent-pale: #faf3e0;
  --orange: #e8734a;
  --orange-dark: #cf5c32;
  --orange-light: #f8a878;
  --brown: #8b5e3c;
  --brown-dark: #5c3d28;
  --brown-light: #a0764e;
  --brown-pale: #c4a882;
  --text: #3d2b1a;
  --text-muted: #7a6248;
  --text-light: #a8906e;
  --header-bg: #5c3d28;
  --card-bg: #faf5eb;
  --card-border: #d4c3a0;
  --shadow: rgba(92, 61, 40, 0.12);
  --shadow-lg: rgba(92, 61, 40, 0.18);
  --radius: 6px;
  --radius-lg: 10px;
  --font-heading: 'Georgia', 'Noto Serif SC', 'Songti SC', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-width: 1100px;
  --header-height: 64px;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  padding-top: var(--header-height);
}

/* Subtle sand drift texture (CSS-only) */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(212, 168, 67, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 60%, rgba(232, 115, 74, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 40% 90%, rgba(212, 168, 67, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

a { color: var(--orange); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--orange-dark); }

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

h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--brown-dark); line-height: 1.35; }
h1 { font-size: 2.2rem; margin-bottom: 0.5rem; }
h2 { font-size: 1.7rem; margin-bottom: 1rem; position: relative; padding-bottom: 0.5rem; }
h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(to right, var(--accent), var(--orange));
  border-radius: 2px;
}
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; color: var(--brown); }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* --- Header --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--header-bg);
  z-index: 1000;
  display: flex;
  align-items: center;
  border-bottom: 3px solid var(--accent);
  box-shadow: 0 2px 12px var(--shadow);
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo { display: flex; align-items: center; gap: 10px; color: #f5ede0; text-decoration: none; }
.logo img { width: 36px; height: 36px; border-radius: 4px; }
.logo span { font-family: var(--font-heading); font-size: 1.15rem; font-weight: bold; color: var(--accent); }

nav { display: flex; align-items: center; gap: 6px; }
nav a {
  color: #e0d5c0;
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  transition: background 0.2s, color 0.2s;
}
nav a:hover, nav a.active { background: rgba(212, 168, 67, 0.15); color: var(--accent); }

.nav-cta {
  background: linear-gradient(135deg, var(--orange), var(--orange-dark));
  color: #fff !important;
  font-weight: bold;
  padding: 8px 20px !important;
  border-radius: var(--radius) !important;
  margin-left: 4px;
  box-shadow: 0 2px 8px rgba(232, 115, 74, 0.35);
  transition: box-shadow 0.2s, transform 0.15s !important;
}
.nav-cta:hover {
  box-shadow: 0 4px 16px rgba(232, 115, 74, 0.5);
  transform: translateY(-1px);
  background: linear-gradient(135deg, var(--orange), var(--orange-dark)) !important;
  color: #fff !important;
}

/* Hamburger */
.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.hamburger span { display: block; width: 24px; height: 2px; background: #e0d5c0; margin: 5px 0; border-radius: 2px; }

/* --- Hero --- */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--brown-dark) 0%, #4a2e1a 40%, var(--brown) 100%);
  color: #f5ede0;
  padding: 80px 0;
  overflow: hidden;
  min-height: 420px;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(212, 168, 67, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 60%, rgba(232, 115, 74, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(212, 168, 67, 0.1) 0%, transparent 70%);
}

.hero .container { position: relative; z-index: 1; display: flex; gap: 40px; align-items: center; }

.hero-content { flex: 1; }
.hero-content h1 {
  font-size: 2.8rem;
  color: var(--accent);
  margin-bottom: 0.3rem;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.hero-content h1::after { display: none; }
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--brown-pale);
  margin-bottom: 1rem;
  font-style: italic;
}
.hero-desc { font-size: 1.05rem; color: #d4c3a0; margin-bottom: 1.5rem; line-height: 1.8; max-width: 600px; }

.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 1.5rem; }
.hero-tags .tag {
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}
.tag-gold { background: rgba(212, 168, 67, 0.2); color: var(--accent); border: 1px solid rgba(212, 168, 67, 0.3); }
.tag-orange { background: rgba(232, 115, 74, 0.2); color: var(--orange-light); border: 1px solid rgba(232, 115, 74, 0.3); }
.tag-brown { background: rgba(139, 94, 60, 0.2); color: var(--brown-pale); border: 1px solid rgba(139, 94, 60, 0.3); }

.hero-visual { flex: 0 0 300px; }
.hero-visual img {
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  border: 2px solid rgba(212, 168, 67, 0.3);
}

.btn-hero {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--brown));
  color: #fff !important;
  padding: 14px 36px;
  border-radius: var(--radius);
  font-size: 1.1rem;
  font-weight: bold;
  box-shadow: 0 4px 16px rgba(212, 168, 67, 0.4);
  transition: box-shadow 0.2s, transform 0.15s;
}
.btn-hero:hover { box-shadow: 0 6px 24px rgba(212, 168, 67, 0.55); transform: translateY(-2px); }

/* --- Page Hero (non-index) --- */
.page-hero {
  background: linear-gradient(135deg, var(--brown-dark) 0%, #3d2b1a 100%);
  padding: 60px 0 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 30%, rgba(212, 168, 67, 0.2) 0%, transparent 60%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { color: var(--accent); font-size: 2.2rem; }
.page-hero h1::after { left: 50%; transform: translateX(-50%); }
.page-hero p { color: var(--brown-pale); font-size: 1.05rem; }

/* --- Sections --- */
section { padding: 50px 0; }
section:nth-child(even) { background: var(--bg-alt); }

.section-title { text-align: center; margin-bottom: 36px; }
.section-title h2 { display: inline-block; }
.section-title h2::after { left: 50%; transform: translateX(-50%); }
.section-title p { color: var(--text-muted); margin-top: 0.5rem; }

/* --- Info Cards Grid --- */
.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin-bottom: 30px; }

.info-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  box-shadow: 0 2px 8px var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}
.info-card:hover { transform: translateY(-3px); box-shadow: 0 6px 20px var(--shadow-lg); }

.info-card-icon { font-size: 2.2rem; margin-bottom: 10px; }
.info-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.info-card p { color: var(--text-muted); font-size: 0.9rem; }

/* --- Feature Cards --- */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 2px 8px var(--shadow);
  transition: border-color 0.2s, transform 0.2s;
}
.feature-card:hover { border-left-color: var(--orange); transform: translateY(-2px); }

.feature-card h3 { color: var(--brown-dark); margin-bottom: 8px; }
.feature-card p { color: var(--text-muted); font-size: 0.95rem; }

/* --- Gallery --- */
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }

.gallery-grid img {
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  border: 2px solid var(--card-border);
  aspect-ratio: 16/9;
  object-fit: cover;
}
.gallery-grid img:hover {
  transform: scale(1.03);
  box-shadow: 0 6px 20px var(--shadow-lg);
  border-color: var(--accent);
}

/* --- Story Blocks --- */
.story-block {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-left: 4px solid var(--brown);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px var(--shadow);
}
.story-block h3 { color: var(--brown-dark); }
.story-block p { color: var(--text-muted); line-height: 1.85; }
.story-chapter {
  display: inline-block;
  background: var(--brown-dark);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: bold;
  padding: 3px 12px;
  border-radius: var(--radius);
  margin-bottom: 12px;
  font-family: var(--font-heading);
}

/* --- Character Cards --- */
.char-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }

.char-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 8px var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}
.char-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px var(--shadow-lg); }

.char-card-header {
  background: linear-gradient(135deg, var(--brown-dark), var(--brown));
  padding: 20px;
  text-align: center;
  position: relative;
}
.char-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  margin: 0 auto;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}
.char-card-header h3 { color: var(--accent); margin-top: 10px; }
.char-card-header .char-role { color: var(--brown-pale); font-size: 0.85rem; }

.char-card-body { padding: 20px; }
.char-card-body p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.8; }

.char-traits { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.char-traits span {
  background: var(--accent-pale);
  color: var(--brown);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.8rem;
  border: 1px solid var(--card-border);
}

/* --- Guide Steps --- */
.guide-steps { counter-reset: step; }
.guide-step {
  counter-increment: step;
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px var(--shadow);
  transition: border-color 0.2s;
}
.guide-step:hover { border-color: var(--accent); }

.guide-step-num {
  flex: 0 0 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent), var(--brown));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.1rem;
  font-family: var(--font-heading);
}
.guide-step-content { flex: 1; }
.guide-step-content h3 { margin-bottom: 4px; }
.guide-step-content p { color: var(--text-muted); font-size: 0.95rem; }

/* --- Accordion / FAQ --- */
.accordion { max-width: 800px; margin: 0 auto; }
.accordion-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
}
.accordion-btn {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 16px 20px;
  font-size: 1rem;
  font-family: var(--font-body);
  color: var(--brown-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.2s;
}
.accordion-btn:hover { background: var(--accent-pale); }
.accordion-btn::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: bold;
  color: var(--accent);
  transition: transform 0.2s;
}
.accordion-btn.active::after { content: '−'; }

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.accordion-panel.open { max-height: 500px; }
.accordion-panel p { padding: 0 20px 16px; color: var(--text-muted); line-height: 1.8; }

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, var(--brown-dark), var(--brown));
  padding: 50px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(212, 168, 67, 0.15) 0%, transparent 60%);
}
.cta-banner .container { position: relative; z-index: 1; }
.cta-banner h2 { color: var(--accent); display: inline-block; }
.cta-banner h2::after { left: 50%; transform: translateX(-50%); }
.cta-banner p { color: var(--brown-pale); margin-bottom: 1.5rem; font-size: 1.05rem; }

.btn-cta {
  display: inline-block;
  background: linear-gradient(135deg, var(--orange), var(--orange-dark));
  color: #fff !important;
  padding: 14px 36px;
  border-radius: var(--radius);
  font-size: 1.1rem;
  font-weight: bold;
  box-shadow: 0 4px 16px rgba(232, 115, 74, 0.35);
  transition: box-shadow 0.2s, transform 0.15s;
}
.btn-cta:hover { box-shadow: 0 6px 24px rgba(232, 115, 74, 0.5); transform: translateY(-2px); }

/* --- Footer --- */
footer {
  background: var(--header-bg);
  color: var(--brown-pale);
  text-align: center;
  padding: 24px 0;
  font-size: 0.85rem;
  border-top: 3px solid var(--accent);
}

/* --- Divider --- */
.desert-divider {
  text-align: center;
  padding: 20px 0;
  font-size: 1.5rem;
  color: var(--accent);
  letter-spacing: 8px;
  user-select: none;
}

/* --- Lightbox --- */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 90vw; max-height: 85vh; border-radius: var(--radius); border: 2px solid var(--accent); }
.lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  background: none;
  border: none;
}

/* --- Tip Box --- */
.tip-box {
  background: var(--accent-pale);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 20px 0;
  color: var(--brown-dark);
}
.tip-box strong { color: var(--brown); }

/* --- Stats Row --- */
.stats-row { display: flex; flex-wrap: wrap; gap: 30px; justify-content: center; margin: 30px 0; }
.stat-item { text-align: center; }
.stat-value { font-family: var(--font-heading); font-size: 2rem; color: var(--accent); font-weight: bold; }
.stat-label { color: var(--text-muted); font-size: 0.85rem; }

/* --- Breadcrumbs --- */
.breadcrumbs { color: var(--text-light); font-size: 0.9rem; padding: 16px 0; }
.breadcrumbs a { color: var(--brown); }
.breadcrumbs span { color: var(--text-muted); }

/* --- Text Utilities --- */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.accent-text { color: var(--accent); }
.orange-text { color: var(--orange); }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.max-w-700 { max-width: 700px; margin-left: auto; margin-right: auto; }
.max-w-800 { max-width: 800px; margin-left: auto; margin-right: auto; }

/* --- Responsive --- */
@media (max-width: 768px) {
  :root { --header-height: 56px; }

  h1 { font-size: 1.7rem; }
  h2 { font-size: 1.4rem; }

  .hero { padding: 50px 0; min-height: auto; }
  .hero .container { flex-direction: column; text-align: center; }
  .hero-content h1 { font-size: 2rem; }
  .hero-desc { max-width: 100%; }
  .hero-visual { flex: 0 0 auto; max-width: 220px; }

  .hamburger { display: block; }
  nav { display: none; position: absolute; top: var(--header-height); left: 0; right: 0;
        background: var(--header-bg); flex-direction: column; padding: 12px 0;
        border-bottom: 2px solid var(--accent); box-shadow: 0 4px 12px var(--shadow); }
  nav.open { display: flex; }
  nav a { padding: 12px 20px; width: 100%; text-align: center; }
  .nav-cta { margin-left: 0; border-radius: 0 !important; }

  .info-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .char-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-step { flex-direction: column; align-items: center; text-align: center; }
  .stats-row { gap: 16px; }
}

@media (max-width: 480px) {
  .info-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 1.6rem; }
}