/* ========== FONTS ========== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

/* ========== CSS VARIABLES - BIOHAZARD ANTIDOTE THEME ========== */
:root {
  --font-serif: 'Noto Serif SC', 'SimSun', 'STSong', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  /* Clinical / Lab Light Background */
  --bg: #f8faf9;
  --bg-warm: #f0f4f2;
  --bg-card: #ffffff;
  --bg-dark: #0d1f17;

  /* Antidote Greens */
  --green-antidote: #00c853;
  --green-serum: #1b9e4b;
  --green-deep: #0d5c2e;
  --green-glow: #69f0ae;

  /* Hazmat Yellows */
  --yellow-hazmat: #f9a825;
  --yellow-warning: #ffc107;
  --yellow-pale: #fff8e1;

  /* Danger / Biohazard */
  --red-biohazard: #c62828;
  --red-danger: #d32f2f;

  /* Clinical Accents */
  --teal-clinical: #00897b;
  --teal-light: #e0f2f1;
  --blue-lab: #1565c0;
  --blue-pale: #e3f2fd;

  /* Text */
  --text: #1b2e23;
  --text-soft: #4a6b56;
  --text-muted: #78909c;
  --text-inverse: #ecfdf5;

  /* Header */
  --header-bg: #0d1f17;
  --header-border: #00c853;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --shadow-green: 0 4px 16px rgba(0,200,83,0.15);

  /* Sizing */
  --max-width: 1200px;
  --radius: 8px;
  --radius-lg: 16px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Virus-cell background pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(0,200,83,0.03) 0%, transparent 50%),
    radial-gradient(circle at 85% 60%, rgba(0,200,83,0.03) 0%, transparent 50%),
    radial-gradient(circle at 50% 85%, rgba(249,168,37,0.03) 0%, transparent 40%),
    radial-gradient(circle at 25% 75%, rgba(0,200,83,0.02) 0%, transparent 45%);
  background-size: 80px 80px;
  background-image:
    radial-gradient(circle at 25% 25%, rgba(0,200,83,0.04) 1px, transparent 1px),
    radial-gradient(circle at 75% 75%, rgba(0,200,83,0.04) 1px, transparent 1px);
}

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

a:hover {
  color: var(--green-antidote);
}

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

/* ========== SCREEN READER ONLY ========== */
.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;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo a {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-inverse);
  letter-spacing: 1px;
  position: relative;
  padding-left: 36px;
}

.logo a::before {
  content: '☣';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--yellow-hazmat);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  color: rgba(255,255,255,0.75);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius);
  transition: all 0.2s;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text-inverse);
  background: rgba(0,200,83,0.15);
}

.nav-cta {
  background: var(--green-antidote) !important;
  color: #fff !important;
  font-weight: 700 !important;
  padding: 8px 20px !important;
  border-radius: 24px !important;
  margin-left: 8px;
  box-shadow: 0 2px 8px rgba(0,200,83,0.3);
  transition: all 0.2s !important;
}

.nav-cta:hover {
  background: var(--green-serum) !important;
  box-shadow: 0 4px 16px rgba(0,200,83,0.4) !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-inverse);
  border-radius: 2px;
  transition: all 0.3s;
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ========== HERO SECTION ========== */
.hero {
  position: relative;
  padding: 60px 24px 80px;
  text-align: center;
  z-index: 1;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,31,23,0.85) 0%, rgba(13,92,46,0.7) 50%, rgba(0,137,123,0.6) 100%);
  z-index: 1;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 0;
  filter: brightness(0.5) saturate(0.7);
}

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

/* Virus-cell overlay pattern on hero */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: 0.08;
  background-image:
    radial-gradient(circle at 20% 30%, #00c853 1px, transparent 1px),
    radial-gradient(circle at 60% 70%, #00c853 1.5px, transparent 1.5px),
    radial-gradient(circle at 80% 20%, #00c853 1px, transparent 1px),
    radial-gradient(circle at 40% 55%, #f9a825 1px, transparent 1px),
    radial-gradient(circle at 10% 80%, #00c853 1.5px, transparent 1.5px);
  background-size: 120px 120px, 180px 180px, 140px 140px, 160px 160px, 100px 100px;
}

.hero-inner {
  position: relative;
  z-index: 3;
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 0;
}

.hero-tagline {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 900;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,0.4);
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.hero-tagline .accent {
  color: var(--green-antidote);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 8px;
  font-weight: 300;
  letter-spacing: 1px;
}

/* Hero biohazard divider */
.hero-divider {
  width: 60px;
  height: 3px;
  background: var(--green-antidote);
  margin: 24px auto;
  position: relative;
}

.hero-divider::before {
  content: '⚕';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0,0,0,0.6);
  padding: 0 12px;
  font-size: 1rem;
  color: var(--yellow-hazmat);
}

/* Sub-page hero */
.hero-subpage {
  padding: 40px 24px 48px;
}

.hero-subpage-title {
  font-size: 2rem;
  font-weight: 700;
}

/* ========== MAIN CONTENT ========== */
.site-main {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== SECTION STYLES ========== */
.section {
  padding: 60px 0;
}

.section-alt {
  background: var(--bg-warm);
  padding-top: 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 3px;
  background: var(--green-antidote);
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-soft);
  max-width: 600px;
  margin: 0 auto;
}

/* ========== GAME INFO CARDS (index) ========== */
.game-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.info-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--green-antidote);
  transition: all 0.3s;
}

.info-card:hover {
  box-shadow: var(--shadow-green);
  transform: translateY(-2px);
}

.info-card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.info-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.info-card p {
  color: var(--text-soft);
  font-size: 0.93rem;
  line-height: 1.6;
}

/* ========== FEATURE CARDS (index) ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--green-serum);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 80px;
  height: 80px;
  opacity: 0.03;
  background: var(--green-antidote);
  border-radius: 50%;
  transform: translate(30px, -30px);
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  border-top-color: var(--green-antidote);
}

.feature-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-soft);
  font-size: 0.93rem;
  line-height: 1.65;
}

/* ========== SCREENSHOT GALLERY ========== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.gallery-grid img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: var(--shadow-sm);
}

.gallery-grid img:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

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

.review-card {
  background: var(--teal-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  border-left: 4px solid var(--teal-clinical);
  position: relative;
}

.review-card::before {
  content: '"';
  position: absolute;
  top: 8px;
  right: 20px;
  font-family: var(--font-serif);
  font-size: 4rem;
  color: rgba(0,137,123,0.08);
  line-height: 1;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-soft);
  line-height: 1.7;
  margin-bottom: 16px;
  font-style: italic;
}

.review-author {
  font-size: 0.85rem;
  color: var(--teal-clinical);
  font-weight: 600;
}

/* ========== CTA BANNER (index only) ========== */
.cta-banner {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--green-deep) 100%);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  margin: 48px 0 60px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-banner::before {
  content: '☣';
  position: absolute;
  font-size: 12rem;
  color: rgba(249,168,37,0.04);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.cta-banner h2 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  position: relative;
}

.cta-banner p {
  color: rgba(255,255,255,0.75);
  font-size: 1rem;
  margin-bottom: 28px;
  position: relative;
}

.cta-btn {
  display: inline-block;
  background: var(--green-antidote);
  color: #fff !important;
  font-size: 1.1rem;
  font-weight: 700;
  padding: 14px 48px;
  border-radius: 32px;
  position: relative;
  box-shadow: 0 4px 20px rgba(0,200,83,0.35);
  transition: all 0.3s;
  letter-spacing: 1px;
}

.cta-btn:hover {
  background: var(--green-serum);
  box-shadow: 0 6px 28px rgba(0,200,83,0.45);
  transform: translateY(-2px);
}

/* ========== LIGHTBOX ========== */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.9);
  z-index: 9999;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

.lightbox.active {
  display: flex;
}

.lightbox img {
  max-width: 90%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 32px;
  font-size: 2rem;
  color: #fff;
  cursor: pointer;
  z-index: 1;
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.25);
}

/* ========== CONTENT SECTION (sub-pages) ========== */
.content-section {
  padding: 48px 0;
}

.content-section h2 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  border-left: 4px solid var(--green-antidote);
  padding-left: 16px;
}

.content-section h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  margin: 32px 0 12px;
}

.content-section p {
  font-size: 1rem;
  color: var(--text-soft);
  line-height: 1.8;
  margin-bottom: 16px;
}

/* ========== STORY PAGE ========== */
.chapter-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--green-deep);
  margin: 28px 0 8px;
}

.story-world {
  background: var(--blue-pale);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 28px 0;
  border-left: 4px solid var(--blue-lab);
}

.story-world h3 {
  font-size: 1.2rem;
  color: var(--blue-lab);
  margin-top: 0;
}

/* ========== GUIDE PAGE ========== */
.guide-intro {
  font-size: 1.05rem;
  color: var(--text-soft);
  line-height: 1.8;
  margin-bottom: 20px;
}

.route-heading {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--green-deep);
  margin: 28px 0 10px;
  padding-left: 12px;
  border-left: 3px solid var(--yellow-hazmat);
}

.route-desc {
  font-size: 0.95rem;
  color: var(--text-soft);
  line-height: 1.7;
  margin-bottom: 12px;
}

.tip-box {
  background: var(--yellow-pale);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 20px 0;
  border-left: 4px solid var(--yellow-hazmat);
}

.tip-box h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: #f57f17;
  margin-bottom: 8px;
}

.tip-box p {
  font-size: 0.93rem;
  color: var(--text-soft);
  margin-bottom: 0;
}

/* ========== CHARACTERS PAGE ========== */
.char-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.char-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s;
  border-top: 3px solid var(--green-serum);
}

.char-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.char-card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.char-card-body {
  padding: 20px;
}

.char-card-body h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.char-card-body .char-role {
  font-size: 0.85rem;
  color: var(--green-serum);
  font-weight: 600;
  margin-bottom: 12px;
}

.char-card-body p {
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.65;
}

.char-traits {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.char-trait {
  background: var(--teal-light);
  color: var(--teal-clinical);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
}

.section-subheading {
  text-align: center;
  margin: 40px 0 24px;
}

.zombie-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.zombie-card {
  background: linear-gradient(135deg, #fff 0%, #fff5f5 100%);
  border-radius: var(--radius-lg);
  padding: 24px;
  border-left: 4px solid var(--red-danger);
  box-shadow: var(--shadow-sm);
}

.zombie-card h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--red-danger);
  margin-bottom: 8px;
}

.zombie-card p {
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.6;
}

/* ========== FAQ PAGE ========== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border-left: 3px solid transparent;
  transition: border-color 0.3s;
}

.faq-item.active {
  border-left-color: var(--green-antidote);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--green-serum);
  transition: transform 0.3s;
  flex-shrink: 0;
}

.faq-item.active .faq-question::after {
  content: '−';
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.93rem;
  color: var(--text-soft);
  line-height: 1.75;
}

/* System requirements */
.sys-reqs-h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--green-deep);
  margin-top: 24px;
  margin-bottom: 12px;
}

.sys-reqs-h3:first-of-type {
  margin-top: 8px;
}

.table-scroll {
  overflow-x: auto;
  margin-bottom: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.reqs-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  font-size: 0.93rem;
}

.reqs-table th,
.reqs-table td {
  padding: 12px 20px;
  text-align: left;
  border-bottom: 1px solid var(--bg-warm);
}

.reqs-table th {
  background: var(--bg-dark);
  color: var(--text-inverse);
  font-weight: 600;
  font-size: 0.9rem;
}

.reqs-table tr:last-child td {
  border-bottom: none;
}

.reqs-table td:first-child {
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}

.reqs-table td:last-child {
  color: var(--text-soft);
}

/* ========== 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 TAGS ========== */
.strong-green { color: var(--green-serum); }
.strong-red { color: var(--red-danger); }
.strong-gold { color: var(--yellow-hazmat); }
.strong-muted { color: var(--text-muted); }
.strong-teal { color: var(--teal-clinical); }

/* ========== TABLE HIGHLIGHT ========== */
.td-highlight {
  color: var(--green-serum);
  font-weight: 700;
}

/* ========== FOOTER ========== */
.site-footer {
  background: var(--header-bg);
  padding: 24px;
  text-align: center;
  border-top: 3px solid var(--header-border);
  position: relative;
  z-index: 1;
}

.site-footer p {
  color: rgba(255,255,255,0.5);
  font-size: 0.85rem;
  margin: 0;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  .site-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--header-bg);
    padding: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
    gap: 4px;
  }

  .site-nav.active { display: flex; }

  .site-nav a {
    padding: 12px 16px;
    border-radius: var(--radius);
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 8px;
    text-align: center;
  }

  .hero-tagline { font-size: 2rem; }
  .hero-subtitle { font-size: 1rem; }
  .section-title { font-size: 1.8rem; }

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

  .cta-banner { padding: 32px 24px; }
  .cta-banner h2 { font-size: 1.4rem; }
}

@media (max-width: 480px) {
  .header-inner { padding: 0 16px; }
  .hero { padding: 40px 16px 60px; }
  .hero-tagline { font-size: 1.6rem; }

  .site-main { padding: 0 16px; }
  .section { padding: 40px 0; }

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

  .game-info-grid,
  .features-grid,
  .reviews-grid,
  .char-grid,
  .zombie-grid {
    grid-template-columns: 1fr;
  }

  .cta-btn { padding: 12px 32px; font-size: 1rem; }
}