/* ========== CSS VARIABLES ========== */
:root {
  /* Disaster survival palette */
  --bg: #fef9f5;
  --bg-warm: #fdf3eb;
  --bg-card: #ffffff;
  --bg-alert: #fff8f0;
  
  /* Crisis reds */
  --crisis-red: #c62828;
  --crisis-red-dark: #8e0000;
  --crisis-red-light: #ef5350;
  
  /* Emergency oranges */
  --emergency-orange: #e65100;
  --emergency-orange-light: #ff9800;
  --alert-yellow: #f9a825;
  
  /* Text */
  --text: #1a1a2e;
  --text-soft: #6b6b7b;
  --text-muted: #90909e;
  --text-on-dark: #f0e6e0;
  
  /* Accents */
  --accent: #c62828;
  --accent-border: #e65100;
  --accent-glow: rgba(230, 81, 0, 0.25);
  
  /* Header */
  --header-bg: #1a1a2e;
  --header-border: #c62828;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.1);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
  
  /* Fonts */
  --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  --font-serif: 'Noto Serif SC', 'STSong', 'SimSun', 'Songti SC', serif;
  --font-pixel: 'Courier New', 'Consolas', 'Source Code Pro', monospace;
  
  /* Spacing */
  --max-width: 1100px;
  --section-pad: 60px 24px;
  --card-radius: 8px;
  --btn-radius: 4px;
}

/* ========== RESET ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--crisis-red);text-decoration:none;transition:color 0.2s}
a:hover{color:var(--emergency-orange)}
ul,ol{margin-left:1.5em}

/* ========== SR-ONLY (Accessible hiding) ========== */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-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(--header-bg);border-bottom:3px solid var(--header-border);box-shadow:var(--shadow-md)}
.header-inner{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:8px 24px}
.site-logo{display:flex;align-items:center;gap:10px}
.site-logo img{width:32px;height:32px}
.site-logo .site-name{font-family:var(--font-serif);font-size:1.15rem;font-weight:700;color:var(--text-on-dark);letter-spacing:0.5px}

/* Nav */
.site-nav{display:flex;align-items:center;gap:6px}
.site-nav a{display:block;padding:8px 14px;color:var(--text-on-dark);font-size:0.92rem;font-weight:500;border-radius:var(--btn-radius);transition:background 0.2s,color 0.2s}
.site-nav a:hover,.site-nav a.active{background:var(--crisis-red);color:#fff}
.header-cta{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;background:var(--emergency-orange);color:#fff!important;font-weight:700;font-size:0.92rem;border-radius:var(--btn-radius);transition:background 0.2s,transform 0.15s}
.header-cta:hover{background:var(--crisis-red);transform:scale(1.04)}
.hamburger{display:none;background:none;border:none;color:var(--text-on-dark);font-size:1.6rem;cursor:pointer;padding:4px 8px}

/* ========== HERO ========== */
.hero{position:relative;overflow:hidden;text-align:center;padding:70px 24px 80px;background:var(--header-bg);display:flex;align-items:center;justify-content:center;min-height:320px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;background-repeat:no-repeat;opacity:0.35;z-index:0}
.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(26,26,46,0.6) 0%,rgba(26,26,46,0.85) 100%)}
.hero-content{position:relative;z-index:1;max-width:720px}
.hero-tagline{font-family:var(--font-serif);font-size:2.6rem;font-weight:800;color:#fff;line-height:1.3;margin-bottom:8px;text-shadow:0 2px 8px rgba(0,0,0,0.6)}
.hero-subtitle{font-size:1.1rem;color:rgba(255,255,255,0.8);line-height:1.6;max-width:560px;margin:0 auto}
.hero-badge{display:inline-block;margin-bottom:14px;padding:5px 16px;background:var(--crisis-red);color:#fff;font-size:0.82rem;font-weight:700;border-radius:3px;letter-spacing:1px;text-transform:uppercase}

/* Sub-page hero */
.hero-subpage{padding:40px 24px 48px;min-height:200px}
.hero-subpage-title{font-size:2rem;font-weight:700}

/* Page-specific hero backgrounds */
.hero-home .hero-bg{background-image:url('../img/header.jpg')}
.hero-guide .hero-bg{background-image:url('../img/screenshot-01.jpg')}
.hero-story .hero-bg{background-image:url('../img/screenshot-02.jpg')}
.hero-characters .hero-bg{background-image:url('../img/screenshot-03.jpg')}
.hero-faq .hero-bg{background-image:url('../img/screenshot-04.jpg')}

/* ========== CONTENT SECTION ========== */
.content-section{max-width:var(--max-width);margin:0 auto;padding:var(--section-pad)}
.content-section h2{font-family:var(--font-serif);font-size:2.2rem;font-weight:700;color:var(--text);margin-bottom:12px}
.content-section h3{font-family:var(--font-serif);font-size:1.4rem;font-weight:700;color:var(--text);margin:32px 0 12px}
.guide-steps-wrapper{counter-reset:guide-step}
.content-section h4{font-size:1.1rem;font-weight:700;color:var(--crisis-red);margin:20px 0 8px}
.content-section p{margin-bottom:16px;color:var(--text);line-height:1.8}
.content-section .section-intro{font-size:1.08rem;color:var(--text-soft);margin-bottom:28px;line-height:1.8}

/* ========== GAME INFO CARDS ========== */
.game-info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-bottom:48px}
.info-card{background:var(--bg-card);border:1px solid #eee;border-left:4px solid var(--crisis-red);border-radius:var(--card-radius);padding:20px;box-shadow:var(--shadow-sm);transition:box-shadow 0.2s}
.info-card:hover{box-shadow:var(--shadow-md)}
.info-card .info-label{font-size:0.78rem;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-bottom:4px}
.info-card .info-value{font-size:1.05rem;font-weight:600;color:var(--text)}

/* ========== FEATURE CARDS ========== */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;margin-bottom:48px}
.feature-card{background:var(--bg-card);border:1px solid #eee;border-radius:var(--card-radius);padding:24px;box-shadow:var(--shadow-sm);transition:transform 0.2s,box-shadow 0.2s;position:relative;overflow:hidden}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.feature-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:100%;background:var(--emergency-orange)}
.feature-card .feature-icon{font-size:2rem;margin-bottom:12px}
.feature-card h3{font-family:var(--font-serif);font-size:1.2rem;font-weight:700;color:var(--text);margin:0 0 8px}
.feature-card p{font-size:0.94rem;color:var(--text-soft);line-height:1.7}

/* ========== SCREENSHOT GALLERY ========== */
.screenshot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-bottom:48px}
.screenshot-grid img{border-radius:var(--card-radius);cursor:pointer;transition:transform 0.2s,box-shadow 0.2s;box-shadow:var(--shadow-sm);aspect-ratio:16/9;object-fit:cover}
.screenshot-grid img:hover{transform:scale(1.03);box-shadow:var(--shadow-lg)}

/* ========== LIGHTBOX ========== */
.lightbox{display:none;position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,0.9);justify-content:center;align-items:center}
.lightbox.active{display:flex}
.lightbox img{max-width:90vw;max-height:85vh;border-radius:4px}
.lightbox-close{position:absolute;top:20px;right:30px;color:#fff;font-size:2rem;cursor:pointer;background:none;border:none}
.lightbox-prev,.lightbox-next{position:absolute;top:50%;transform:translateY(-50%);color:#fff;font-size:2.5rem;background:none;border:none;cursor:pointer;padding:10px 16px}
.lightbox-prev{left:20px}
.lightbox-next{right:20px}

/* ========== CTA BANNER (index only) ========== */
.cta-banner{background:linear-gradient(135deg,var(--crisis-red-dark) 0%,var(--crisis-red) 50%,var(--emergency-orange) 100%);padding:50px 24px;text-align:center;position:relative;overflow:hidden}
.cta-banner::before{content:'';position:absolute;inset:0;background:repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(255,255,255,0.03) 2px,rgba(255,255,255,0.03) 4px)}
.cta-banner-inner{position:relative;z-index:1;max-width:600px;margin:0 auto}
.cta-banner h2{font-family:var(--font-serif);font-size:1.8rem;font-weight:800;color:#fff;margin-bottom:10px}
.cta-banner p{color:rgba(255,255,255,0.85);font-size:1.05rem;margin-bottom:24px;line-height:1.6}
.cta-btn{display:inline-flex;align-items:center;gap:8px;padding:14px 36px;background:#fff;color:var(--crisis-red)!important;font-size:1.1rem;font-weight:700;border-radius:var(--btn-radius);transition:transform 0.2s,box-shadow 0.2s;text-decoration:none;box-shadow:0 4px 16px rgba(0,0,0,0.3)}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(0,0,0,0.4);color:var(--emergency-orange)!important}

/* ========== REVIEWS ========== */
.reviews-section{padding:var(--section-pad);max-width:var(--max-width);margin:0 auto}
.reviews-section h2{font-family:var(--font-serif);font-size:2rem;font-weight:700;text-align:center;margin-bottom:32px;color:var(--text)}
.reviews-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.review-card{background:var(--bg-card);border:1px solid #eee;border-radius:var(--card-radius);padding:24px;box-shadow:var(--shadow-sm);position:relative}
.review-card::before{content:'\201C';position:absolute;top:8px;left:16px;font-family:var(--font-serif);font-size:3rem;color:var(--crisis-red-light);opacity:0.3;line-height:1}
.review-text{font-size:0.95rem;color:var(--text-soft);line-height:1.7;font-style:italic;margin-bottom:12px}
.review-author{font-size:0.85rem;font-weight:600;color:var(--text);text-align:right}

/* ========== GUIDE PAGE ========== */
.guide-intro{font-size:1.08rem;color:var(--text-soft);margin-bottom:28px;line-height:1.8}
.guide-step{margin-bottom:32px;padding:24px;background:var(--bg-card);border:1px solid #eee;border-left:4px solid var(--emergency-orange);border-radius:var(--card-radius);box-shadow:var(--shadow-sm)}
.guide-step h3{font-family:var(--font-serif);font-size:1.25rem;font-weight:700;color:var(--crisis-red);margin:0 0 10px}
.guide-step h3::before{content:'#' counter(guide-step);counter-increment:guide-step;margin-right:8px;color:var(--emergency-orange)}
.tip-box{background:var(--bg-alert);border:1px solid var(--alert-yellow);border-left:4px solid var(--alert-yellow);border-radius:var(--card-radius);padding:16px 20px;margin:16px 0}
.tip-box p{margin:0;font-size:0.92rem;color:var(--text);font-weight:500}
.tip-box p::before{content:'💡 '}

.route-heading{font-family:var(--font-serif);font-size:1.3rem;font-weight:700;color:var(--emergency-orange);margin:36px 0 12px;padding-bottom:6px;border-bottom:2px solid var(--accent-glow)}
.route-desc{font-size:0.96rem;color:var(--text-soft);line-height:1.7;margin-bottom:16px}

.chapter-title{font-family:var(--font-serif);font-size:1.2rem;font-weight:700;color:var(--crisis-red);margin:28px 0 10px}

/* ========== CHARACTERS PAGE ========== */
.char-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin-bottom:48px}
.char-card{background:var(--bg-card);border:1px solid #eee;border-radius:var(--card-radius);padding:24px;box-shadow:var(--shadow-sm);text-align:center;transition:transform 0.2s,box-shadow 0.2s}
.char-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.char-card img{width:100%;height:200px;object-fit:cover;border-radius:4px;margin-bottom:16px}
.char-card h3{font-family:var(--font-serif);font-size:1.2rem;font-weight:700;color:var(--text);margin:0 0 4px}
.char-card .char-role{font-size:0.82rem;color:var(--emergency-orange);font-weight:600;margin-bottom:10px;text-transform:uppercase;letter-spacing:0.5px}
.char-card .char-desc{font-size:0.92rem;color:var(--text-soft);line-height:1.6}
.section-subheading{text-align:center;font-family:var(--font-serif);font-size:1.4rem;font-weight:700;color:var(--text);margin:40px 0 24px}

/* Enemy grid */
.enemy-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-bottom:48px}
.enemy-card{background:var(--bg-card);border:1px solid #eee;border-radius:var(--card-radius);padding:20px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.enemy-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:100%;background:var(--crisis-red)}
.enemy-card h3{font-family:var(--font-serif);font-size:1.1rem;font-weight:700;color:var(--text);margin:0 0 4px}
.enemy-card .enemy-type{font-size:0.78rem;color:var(--emergency-orange);font-weight:600;margin-bottom:8px;text-transform:uppercase;letter-spacing:0.5px}
.enemy-card p{font-size:0.9rem;color:var(--text-soft);line-height:1.6}

/* ========== FAQ ========== */
.faq-list{margin-bottom:48px}
.faq-item{border:1px solid #e0e0e0;border-radius:var(--card-radius);margin-bottom:10px;overflow:hidden;background:var(--bg-card);box-shadow:var(--shadow-sm)}
.faq-question{width:100%;text-align:left;padding:16px 48px 16px 20px;background:none;border:none;font-family:var(--font-sans);font-size:1.02rem;font-weight:600;color:var(--text);cursor:pointer;position:relative;line-height:1.5}
.faq-question::after{content:'+';position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:1.3rem;font-weight:300;color:var(--crisis-red);transition:transform 0.3s}
.faq-item.active .faq-question::after{content:'−';transform:translateY(-50%)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.35s ease}
.faq-item.active .faq-answer{max-height:600px}
.faq-answer p{padding:0 20px 18px;font-size:0.94rem;color:var(--text-soft);line-height:1.7;margin:0}

/* System requirements */
.sys-reqs{margin-bottom:48px}
.sys-reqs h2{font-family:var(--font-serif);font-size:1.8rem;font-weight:700;color:var(--text);margin-bottom:20px}
.sys-reqs-h3{font-family:var(--font-serif);font-size:1.2rem;font-weight:700;color:var(--crisis-red);margin:24px 0 12px}
.sys-reqs-h3:first-of-type{margin-top:8px}
.table-scroll{overflow-x:auto;margin-bottom:20px}
.sys-reqs table{width:100%;border-collapse:collapse;min-width:500px}
.sys-reqs th,.sys-reqs td{padding:10px 14px;text-align:left;border:1px solid #e0e0e0;font-size:0.92rem}
.sys-reqs th{background:var(--header-bg);color:var(--text-on-dark);font-weight:600;width:120px}
.sys-reqs td{background:var(--bg-card);color:var(--text-soft)}
.td-highlight{color:var(--crisis-red)!important;font-weight:700}

/* ========== STORY PAGE ========== */
.story-block{margin-bottom:32px}
.story-block h3{font-family:var(--font-serif);font-size:1.3rem;font-weight:700;color:var(--crisis-red);margin-bottom:8px}
.story-block p{font-size:1rem;color:var(--text);line-height:1.8;margin-bottom:16px}

/* ========== CONTENT LISTS ========== */
.content-list{list-style:disc;padding-left:24px;margin-bottom:16px}
.content-list-num{list-style:decimal;padding-left:24px;margin-bottom:16px}
.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)}

/* ========== STRONG HIGHLIGHTS ========== */
.strong-red{color:var(--crisis-red)}
.strong-orange{color:var(--emergency-orange)}
.strong-gold{color:var(--alert-yellow)}
.strong-muted{color:var(--text-muted)}
.strong-navy{color:var(--header-bg)}

/* ========== DIVIDER ========== */
.section-divider{max-width:var(--max-width);margin:0 auto;padding:0 24px}
.section-divider hr{border:none;border-top:2px dashed var(--accent-glow)}

/* ========== FOOTER ========== */
.site-footer{background:var(--header-bg);border-top:3px solid var(--header-border);padding:28px 24px;text-align:center}
.site-footer p{color:var(--text-muted);font-size:0.88rem;margin:0}

/* ========== RESPONSIVE ========== */
@media(max-width:768px){
  .site-nav{display:none;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:var(--header-bg);padding:16px 24px;border-bottom:3px solid var(--header-border);gap:4px}
  .site-nav.open{display:flex}
  .hamburger{display:block}
  .hero-tagline{font-size:1.8rem}
  .hero-subpage-title{font-size:1.5rem}
  .content-section h2{font-size:1.7rem}
  .content-section{padding:40px 18px}
  .feature-grid{grid-template-columns:1fr}
  .game-info-grid{grid-template-columns:repeat(2,1fr)}
  .reviews-grid{grid-template-columns:1fr}
  .screenshot-grid{grid-template-columns:repeat(2,1fr)}
  .char-grid{grid-template-columns:1fr}
  .enemy-grid{grid-template-columns:1fr}
  .cta-banner h2{font-size:1.4rem}
}

@media(max-width:480px){
  .site-logo .site-name{font-size:1rem}
  .header-cta{padding:6px 14px;font-size:0.85rem}
  .hero-tagline{font-size:1.4rem}
  .hero{padding:50px 16px 60px;min-height:240px}
  .hero-subpage{padding:30px 16px 36px}
  .hero-subpage-title{font-size:1.2rem}
  .content-section h2{font-size:1.4rem}
  .game-info-grid{grid-template-columns:1fr}
  .screenshot-grid{grid-template-columns:1fr}
  .cta-btn{padding:12px 24px;font-size:1rem}
}

/* ========== ANIMATIONS ========== */
@keyframes pulse-danger{0%,100%{box-shadow:0 0 0 0 var(--accent-glow)}50%{box-shadow:0 0 0 8px transparent}}
.cta-btn{animation:pulse-danger 2.5s infinite}

@keyframes scanline{0%{transform:translateY(-100%)}100%{transform:translateY(100%)}}
.hero-bg::after{animation:scanline 8s linear infinite;background:linear-gradient(180deg,rgba(26,26,46,0.6) 0%,rgba(26,26,46,0.85) 50%,rgba(26,26,46,0.6) 100%);opacity:0.5}