/* ===================================================================
   ByteMate Studio — black + dark gold, single-page scroll
   =================================================================== */

   :root {
    --bg: #000000;
    --bg-2: #0c0c0c;
    --bg-3: #141414;
    --line: #1f1f1f;
    --gold: #d4a017;
    --gold-soft: #b9860f;
    --gold-bright: #f1c84a;
    --gold-glow: rgba(212, 160, 23, 0.18);
    --text: #e8e6e0;
    --text-muted: #8a8478;
    --muted: #8a8478;
    --muted-2: #5f5a50;
    --font-display: "Cinzel", "Trajan Pro", "Times New Roman", "STZhongsong", "STKaiti", serif;
    --font-body: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
    --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
    --maxw: 1060px;
    --radius: 6px;
    --ease-out: cubic-bezier(.25,.46,.45,.94);
  }
  
  * { box-sizing: border-box; }
  
  html {
    scroll-behavior: smooth;
    scroll-padding-top: 78px;
  }

  @media (max-width: 720px) {
    html { scroll-padding-top: 64px; }
  }
  
  body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  
  img { display: block; max-width: 100%; }
  
  ::selection { background: var(--gold); color: var(--bg); }
  
  /* ──────────────────────────────────────────────
     Language Switcher — top-right, fixed position
     ────────────────────────────────────────────── */
  .lang-switcher {
    position: fixed;
    top: 14px;
    right: 70px;
    z-index: 200;
    display: flex;
    align-items: center;
    gap: 4px;
    background: rgba(0,0,0,0.65);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 5px 12px;
  }
  
  .lang-btn {
    background: none;
    border: none;
    padding: 2px 5px;
    font-family: var(--font-display);
    font-size: 12px;
    letter-spacing: 0.08em;
    color: var(--muted);
    cursor: pointer;
    transition: color 180ms;
    line-height: 1;
  }
  .lang-btn:hover { color: var(--gold); }
  .lang-btn.active { color: var(--gold); font-weight: 700; }
  
  .lang-sep {
    color: var(--line);
    font-size: 11px;
    user-select: none;
  }
  
  /* ──────────────────────────────────────────────
     Banner — banner.png at 50% opacity as backdrop
     ────────────────────────────────────────────── */
  .banner {
    position: relative;
    width: 100%;
    margin: 0 auto;
    background: #000;
    overflow: hidden;
  }
  
  .banner-img-wrap {
    position: relative;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    aspect-ratio: 16 / 9;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  /* 50% opacity — banner as semi-transparent backdrop */
  .banner-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 38%;
    display: block;
    opacity: 0.18;
  }
  
  /* dark gradient so overlay text pops */
  .banner-overlay {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 24px;
    text-align: center;
    pointer-events: none;
  }
  
  .banner-title {
    font-family: var(--font-display);
    font-size: clamp(42px, 8vw, 94px);
    font-weight: 700;
    letter-spacing: 0.2em;
    color: #fff;
    margin: 0;
    line-height: 1;
    text-shadow: 0 4px 32px rgba(0,0,0,0.9), 0 0 60px rgba(212,160,23,0.25);
  }
  
  .banner-mono {
    font-family: var(--font-mono);
    font-size: clamp(11px, 1.5vw, 15px);
    letter-spacing: 0.45em;
    color: var(--gold);
    margin: 0;
    text-transform: uppercase;
    text-shadow: 0 2px 12px #000;
  }
  
  /* social icons sit over the banner */
  .social-icons {
    position: absolute;
    top: 16px;
    right: 20px;
    z-index: 4;
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 10px;
  }
  .social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid rgba(212,160,23,0.7);
    border-radius: 50%;
    color: var(--gold);
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: background 200ms, color 200ms, transform 200ms;
  }
  .social-icons a:hover {
    color: var(--bg);
    background: var(--gold);
    transform: translateY(-2px);
  }
  .social-icons svg { width: 16px; height: 16px; }
  
  /* ──────────────────────────────────────────────
     Sticky Navbar — icon centered between nav clusters
     ────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.93);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 300ms ease, height 400ms ease;
  height: 100px;
}

.navbar.affix {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
  height: 90px;
}
  
  .navbar-inner {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    /* 3-column: [nav links] [brand icon column] [nav links]
       The brand column is fixed-width so the icon can be large
       without shifting the surrounding nav links. */
    grid-template-columns: 1fr 140px 1fr;
    align-items: center;
    gap: 0;
    height: 100%;
  }
  
  .nav-side {
    list-style: none;
    margin: 0;
    padding: 0 20px;
    display: flex;
    gap: 32px;
  }
  .nav-left  { justify-content: flex-end; }
  .nav-right { justify-content: flex-start; }

  /* Hamburger toggle is mobile-only by default */
  .nav-toggle { display: none; }
  .nav-menu { display: contents; }
  
  .nav-link {
    display: inline-block;
    padding: 8px 4px;
    font-family: var(--font-display);
    font-size: 17px;
    letter-spacing: 0.16em;
    color: var(--muted);
    text-transform: uppercase;
    text-decoration: none;
    transition: color 200ms;
    position: relative;
  }
  .nav-link::after {
    content: "";
    position: absolute;
    bottom: 2px; left: 50%; right: 50%;
    height: 1px;
    background: var(--gold);
    transition: left 220ms var(--ease-out), right 220ms var(--ease-out);
  }
  .nav-link:hover { color: var(--gold); }
  .nav-link:hover::after { left: 0; right: 0; }
  .nav-link.active { color: var(--gold); }
  .nav-link.active::after { left: 0; right: 0; }
  
  /* brand icon lives in its own fixed-width column */
.brand-col {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  transition: height 300ms ease;
}

.brand {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  width: 100%;
  height: 100%;
}

.brand-img {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  object-fit: contain;
  opacity: 1;
  transition: top 800ms ease, opacity 800ms ease;
  z-index: 2;
}

.brand-text {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  bottom: -10px;
  opacity: 0;
  transition: bottom 800ms ease, opacity 800ms ease;
  z-index: 1;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--gold);
  text-decoration: none;
}

.brand-subtitle {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
  text-decoration: none;
}

/* Affix state: icon fades up, text fades in */
.navbar.affix .brand-img {
  top: -10px;
  opacity: 0;
}
.navbar.affix .brand-text {
  bottom: 0;
  opacity: 1;
}
  
  /* ── Main ── */
  .main {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
  }
  
  .section { padding: 90px 0 80px; }
  .section + .section { border-top: 1px solid var(--line); }
  
  .section-title {
    font-family: var(--font-display);
    font-size: clamp(26px, 4vw, 40px);
    letter-spacing: 0.2em;
    color: var(--gold);
    margin: 0 0 14px;
    text-transform: uppercase;
    text-align: center;
    font-weight: 600;
  }
  .section-line {
    width: 52px;
    height: 2px;
    background: linear-gradient(90deg, var(--gold-soft), var(--gold-bright));
    margin: 0 auto 56px;
    border-radius: 1px;
  }
  
  /* ── About ── */
  .about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
  }
  .about-card {
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 30px 26px;
    transition: border-color 220ms var(--ease-out);
  }
  .about-card:hover { border-color: var(--gold-soft); }
  .about-card h3 {
    font-family: var(--font-display);
    font-size: 17px;
    letter-spacing: 0.12em;
    color: var(--gold);
    margin: 0 0 16px;
    text-transform: uppercase;
  }
  .about-card p { color: var(--text); margin: 0 0 12px; }
  .about-card p:last-child { margin-bottom: 0; }
  .about-card strong { color: var(--gold-bright); font-weight: 600; }
  .bullet-list { list-style: none; margin: 14px 0 0; padding: 0; }
  .bullet-list li {
    position: relative;
    padding-left: 18px;
    margin-bottom: 8px;
    color: var(--text);
    font-size: 15px;
  }
  .bullet-list li::before {
    content: "◆";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--gold);
    font-size: 9px;
    line-height: 1.8;
  }
  
  /* ── Works ── */
  .game-card {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 32px;
    align-items: start;
  }
  @media (min-width: 780px) {
    .game-card { grid-template-columns: 1fr 1fr; gap: 44px; padding: 40px; }
  }
  
  .game-media {
    position: relative;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: #000;
  }

  /* ── Game Carousel ── */
  .game-carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
  }
  .carousel-track {
    display: flex;
    transition: transform 400ms var(--ease-out);
  }
  .carousel-track .game-cover {
    flex: 0 0 100%;
    width: 100%;
    height: auto;
    display: block;
  }
  .carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    border: 1px solid var(--gold-soft);
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    color: var(--gold);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 200ms, border-color 200ms;
    z-index: 2;
  }
  .carousel-btn:hover {
    background: rgba(0, 0, 0, 0.9);
    border-color: var(--gold);
  }
  .carousel-prev { left: 10px; }
  .carousel-next { right: 10px; }
  .carousel-dots {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 2;
  }
  .carousel-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: background 200ms, transform 200ms;
  }
  .carousel-dots .dot.active {
    background: var(--gold);
    border-color: var(--gold);
    transform: scale(1.2);
  }

  .game-cover { width: 100%; height: auto; display: block; }
  .game-icon-corner {
    position: absolute;
    bottom: 14px; right: 14px;
    width: 84px; height: 84px;
    border-radius: 13px;
    border: 2px solid var(--gold);
    background: rgba(0,0,0,0.6);
    padding: 5px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.7);
  }
  
  .game-info { display: flex; flex-direction: column; }
  .game-header { margin-bottom: 16px; }
  .game-title {
    font-family: var(--font-display);
    font-size: clamp(22px, 3vw, 30px);
    color: var(--gold);
    margin: 0;
    letter-spacing: 0.06em;
    font-weight: 600;
  }
  .game-subtitle {
    font-family: var(--font-display);
    font-size: 13px;
    color: var(--muted);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin: 6px 0 0;
  }
  
  .tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
  .tag {
    display: inline-block;
    padding: 4px 12px;
    border: 1px solid var(--gold-soft);
    border-radius: 999px;
    font-size: 11px;
    color: var(--gold);
    letter-spacing: 0.1em;
    font-family: var(--font-display);
    text-transform: uppercase;
  }
  
  .game-desc { color: var(--text); margin: 0 0 16px; }
  .game-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--muted);
    margin: 0 0 26px;
    letter-spacing: 0.04em;
  }
  .dot { color: var(--muted-2); }
  
  .btn-download {
    display: inline-flex;
    margin-left: auto;
    align-items: center;
    gap: 12px;
    padding: 13px 20px;
    background: linear-gradient(160deg, var(--gold) 0%, var(--gold-soft) 100%);
    color: #0a0a0a;
    border-radius: var(--radius);
    font-family: var(--font-display);
    font-size: 14px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    font-weight: 700;
    transition: transform 180ms var(--ease-out), box-shadow 180ms, filter 180ms;
    align-self: flex-start;
  }
  .btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px var(--gold-glow);
    filter: brightness(1.07);
    color: #0a0a0a;
  }
  .dl-icon { font-size: 20px; line-height: 1; }
  .dl-text { display: flex; flex-direction: column; line-height: 1.2; }
  .dl-main { font-size: 14px; }
  .dl-sub  { font-size: 10px; opacity: 0.72; letter-spacing: 0.06em; font-family: var(--font-mono); }
  
  .coming-soon {
    text-align: center;
    color: var(--muted);
    font-family: var(--font-display);
    letter-spacing: 0.2em;
    margin-top: 40px;
    font-size: 15px;
  }
  
  /* ── Team ── */
  .member-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 22px;
  }
  .member-card {
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 26px 22px;
    text-align: center;
    transition: border-color 220ms var(--ease-out), transform 220ms var(--ease-out);
  }
  .member-card:hover { border-color: var(--gold-soft); transform: translateY(-3px); }
  .member-portrait {
    width: 80px; height: 80px;
    border-radius: 50%;
    margin: 0 auto 16px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(160deg, var(--bg-3), var(--bg));
    border: 2px solid var(--gold);
    box-shadow: 0 0 16px var(--gold-glow);
    overflow: hidden;
  }
  .member-portrait span {
    font-family: var(--font-display);
    font-size: 32px;
    color: var(--gold);
    font-weight: 700;
  }
  .member-portrait img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
  }
  .member-name {
    font-family: var(--font-display);
    color: var(--gold);
    letter-spacing: 0.14em;
    font-size: 17px;
    margin: 0 0 4px;
    text-transform: uppercase;
  }
  .member-role {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--muted);
    margin: 0 0 12px;
    letter-spacing: 0.08em;
  }
  .member-hobby { font-size: 13px; color: var(--text); margin: 0 0 8px; }
  .member-bio  { font-size: 13px; color: var(--muted); margin: 0; line-height: 1.65; }
  .member-note {
    margin-top: 28px;
    text-align: center;
    color: var(--muted-2);
    font-size: 12px;
    font-style: italic;
  }
  
  /* ── Join Us ── */
  .join-intro {
    max-width: 680px;
    margin: 0 auto 48px;
    text-align: center;
    color: var(--text);
    font-size: 16px;
    line-height: 1.8;
  }
  
  .join-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
  }
  
  .join-card {
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 30px 26px;
    transition: border-color 220ms var(--ease-out), transform 220ms var(--ease-out);
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .join-card:hover { border-color: var(--gold-soft); transform: translateY(-3px); }
  
  .join-icon {
    width: 52px;
    height: 52px;
    border: 1px solid var(--gold-soft);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold);
    background: rgba(212,160,23,0.06);
    flex-shrink: 0;
  }
  .join-icon svg { width: 24px; height: 24px; }
  
  .join-role {
    font-family: var(--font-display);
    font-size: 18px;
    letter-spacing: 0.12em;
    color: var(--gold);
    margin: 0;
    text-transform: uppercase;
  }
  .join-desc { color: var(--text); margin: 0; font-size: 14px; line-height: 1.75; }
  
  .join-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  
  .btn-join {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border: 2px solid var(--gold);
    border-radius: var(--radius);
    font-family: var(--font-display);
    font-size: 15px;
    letter-spacing: 0.14em;
    color: var(--gold);
    text-transform: uppercase;
    text-decoration: none;
    background: transparent;
    transition: background 220ms, color 220ms, transform 180ms, box-shadow 220ms;
    font-weight: 600;
  }
  .btn-join:hover {
    background: var(--gold);
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px var(--gold-glow);
  }
  
  .join-note {
    font-size: 12px;
    color: var(--muted-2);
    margin: 0;
    font-style: italic;
    text-align: center;
  }
  
  /* ── Contact ── */
  .contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 22px;
  }
  .contact-card {
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 26px 22px;
    transition: border-color 220ms var(--ease-out), opacity 220ms var(--ease-out);
  }
  .contact-card:hover { border-color: var(--gold-soft); }
  .contact-card.contact-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  /* QR cards: RedNote and Discord share equal width */
  .contact-card.contact-qr-wide {
    grid-row: span 2;
  }
  /* Discord content wrapper */
  .discord-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 0;
    flex: 1;
    justify-content: center;
  }
  /* Email and Xiaohongshu stacked in first column */
  .contact-card:nth-child(1) { grid-column: 1; grid-row: 1; }
  .contact-card:nth-child(2) { grid-column: 1; grid-row: 2; margin-top: -6px; }
  .contact-card:nth-child(3) { grid-column: 2; grid-row: 1 / 3; }
  .contact-card:nth-child(4) { grid-column: 3; grid-row: 1 / 3; }
  .contact-label {
    font-family: var(--font-display);
    color: var(--gold);
    font-size: 13px;
    letter-spacing: 0.2em;
    margin: 0 0 14px;
    text-transform: uppercase;
  }
  .contact-value {
    font-family: var(--font-mono);
    font-size: 15px;
    color: var(--text);
    margin: 0 0 8px;
    display: inline-block;
    text-decoration: none;
    transition: color 200ms;
  }
  a.contact-value:hover { color: var(--gold-bright); }
  .contact-hint { font-size: 12px; color: var(--muted); margin: 8px 0 0; line-height: 1.5; }
  .qr-img {
    width: 168px; height: 168px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #000;
    padding: 6px;
    margin: 4px 0 14px;
  }
  
  /* ── Footer ── */
  .footer {
    border-top: 1px solid var(--line);
    padding: 22px 24px;
    text-align: center;
    color: var(--muted);
    font-size: 12px;
    letter-spacing: 0.06em;
  }
  
  /* ── Mobile ── */
  @media (max-width: 720px) {
    .lang-switcher {
      top: 10px;
      right: 14px;
      padding: 4px 6px;
      gap: 6px;
    }
    /* ≥44x44pt touch target via padding; visual font stays compact */
    .lang-btn {
      font-size: 12px;
      padding: 10px 6px;
      min-width: 44px;
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .lang-sep { font-size: 11px; }

    .banner-img-wrap { aspect-ratio: auto; max-height: 50vh; }
    .banner-img { object-fit: contain; opacity: 0.22; }
    .banner-title { letter-spacing: 0.12em; font-size: clamp(34px, 10vw, 56px); }
    .banner-mono { letter-spacing: 0.28em; }

    .social-icons { top: 64px; right: 14px; gap: 10px; }
    /* ≥44x44pt touch target */
    .social-icons a { width: 44px; height: 44px; }

    /* Keep navbar sticky so brand icon / text stay visible */
    .navbar {
      position: sticky;
      top: 0;
      height: 72px;
    }
    .navbar.affix { height: 72px; }
    .navbar-inner {
      grid-template-columns: 1fr;
      padding: 0 16px;
      gap: 0;
      justify-items: stretch;
      position: relative;
    }

    /* Hamburger toggle button — 44x44 touch target */
    .nav-toggle {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      width: 44px;
      height: 44px;
      background: transparent;
      border: 1px solid var(--line);
      border-radius: 6px;
      cursor: pointer;
      padding: 0;
      position: absolute;
      left: 16px;
      top: 50%;
      transform: translateY(-50%);
      z-index: 110;
    }
    .nav-toggle:hover { border-color: var(--gold); }
    .nav-toggle-bar {
      display: block;
      width: 20px;
      height: 2px;
      background: var(--gold);
      transition: transform 220ms var(--ease-out), opacity 220ms;
    }
    .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }
    .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
      opacity: 0;
    }
    .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    /* Brand: centered horizontally above the menu */
    .brand-col {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      width: auto;
      height: 100%;
      pointer-events: none;
    }
    .brand { pointer-events: auto; }
    .brand-img {
      width: 44px;
      height: 44px;
      position: relative;
      left: 0;
      top: 0;
      transform: none;
    }
    .brand-text { display: none; }

    /* Slide-down menu panel */
    .nav-menu {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      background: rgba(0, 0, 0, 0.97);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--line);
      max-height: 0;
      overflow: hidden;
      transition: max-height 320ms var(--ease-out);
      display: flex;
      flex-direction: column;
      padding: 0 16px;
    }
    .nav-menu.open { max-height: 80vh; padding: 12px 16px 20px; }

    .nav-side {
      flex-direction: column;
      gap: 0;
      padding: 0;
      width: 100%;
    }
    .nav-side li { width: 100%; border-bottom: 1px solid var(--line); }
    .nav-side li:last-child { border-bottom: none; }

    .nav-link {
      display: flex;
      align-items: center;
      font-size: 14px;
      letter-spacing: 0.14em;
      padding: 14px 4px;
      width: 100%;
      min-height: 48px; /* ≥48dp Android touch target */
    }
    .nav-link::after { display: none; }

    .section { padding: 60px 0 56px; }
    .game-card { padding: 20px; }
    .game-icon-corner { width: 64px; height: 64px; bottom: 8px; right: 8px; }
    .btn-download { width: 100%; justify-content: center; }
    .qr-img { width: 148px; height: 148px; }
    .join-grid { grid-template-columns: 1fr; }
    .btn-join { width: 100%; justify-content: center; }
    .contact-grid { grid-template-columns: 1fr; }
    /* QR cards stack vertically on mobile */
    .contact-card.contact-qr,
    .contact-card.contact-qr-wide {
      grid-column: 1;
      grid-row: auto;
      min-height: 280px;
    }
  }
  
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 0.01ms !important;
      transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
  }