/* ================================
   打砖块游戏 - 自定义样式
   ================================ */
:root {
  --bg: #FAFAF9; --bg-alt: #F5F5F4; --surface: #FFFFFF;
  --border: #E7E5E4; --border-strong: #D6D3D1;
  --text: #1E293B; --text-secondary: #52525B; --text-muted: #71717A;
  --primary: #4F46E5; --primary-hover: #4338CA;
  --primary-light: rgba(79,70,229,0.08);
  --secondary: #F97316; --accent: #EC4899; --success: #059669;
  --radius: 10px; --radius-lg: 14px; --radius-xl: 20px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow: 0 4px 12px rgba(0,0,0,.06);
  --shadow-lg: 0 12px 32px rgba(0,0,0,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter','Noto Sans SC',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased}
.toast{position:fixed;top:24px;right:24px;background:var(--text);color:var(--bg);padding:10px 18px;border-radius:100px;font-size:14px;font-weight:500;display:flex;align-items:center;gap:8px;z-index:1000;transform:translateX(calc(100% + 40px));transition:transform .3s cubic-bezier(.34,1.56,.64,1);box-shadow:0 4px 16px rgba(0,0,0,.12)}
.toast.show{transform:translateX(0)}
.toast-dot{width:8px;height:8px;background:var(--success);border-radius:50%}
.page{max-width:960px;margin:0 auto;padding:0 32px}
#header.scrolled{background:rgba(255,255,255,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 2px 20px rgba(0,0,0,.06)}
.game-section{padding:32px 0 24px}
.game-wrapper{display:flex;flex-direction:column;align-items:center;gap:20px}
.game-container{position:relative;background:#0F172A;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.game-canvas{display:block}
.game-info{display:flex;align-items:center;gap:24px;padding:12px 24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.info-item{display:flex;flex-direction:column;align-items:center}
.info-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted)}
.info-value{font-size:28px;font-weight:700;color:var(--text)}
.game-controls{display:flex;gap:12px}
.btn-game{padding:12px 28px;border-radius:100px;font-family:inherit;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease;border:none}
.btn-game--primary{background:linear-gradient(135deg,#F97316 0%,#EA580C 100%);color:#fff;box-shadow:0 4px 12px rgba(249,115,22,.35)}
.btn-game--primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(249,115,22,.45)}
.btn-game--secondary{background:var(--bg-alt);color:var(--text-secondary);border:1px solid var(--border)}
.btn-game--secondary:hover{background:var(--primary-light);border-color:rgba(79,70,229,.25)}
.game-tips{font-size:13px;color:var(--text-muted);text-align:center}
.game-tips kbd{padding:2px 8px;background:var(--bg-alt);border:1px solid var(--border-strong);border-radius:4px;font-family:'SF Mono','Cascadia Code',monospace;font-size:12px;color:var(--text-secondary)}
.guide-section{margin-top:16px;margin-bottom:64px;background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden}
.guide-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:14px 20px;background:none;border:none;cursor:pointer;transition:background .15s ease}
.guide-toggle:hover{background:var(--bg-alt)}
.guide-toggle-title{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:#1E293B}
.guide-toggle.open .toggle-arrow{transform:rotate(180deg)}
.toggle-arrow{transition:transform .2s ease;color:var(--text-muted)}
.guide-list{padding:0 20px 20px}
.guide-list.hidden{display:none}
.guide-item{padding:16px 0;border-top:1px solid var(--border)}
.guide-item:first-child{border-top:1px solid var(--border)}
.guide-item-title{font-size:14px;font-weight:600;color:#1E293B;margin-bottom:6px}
.guide-item-body{font-size:13px;color:var(--text-secondary);line-height:1.8}
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:#f1f5f9}
::-webkit-scrollbar-thumb{background:#A5B4FC;border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:#4F46E5}
::selection{background:rgba(79,70,229,.2);color:#1E293B}
@media(max-width:768px){.page{padding:0 16px}.game-info{gap:16px;padding:10px 16px}.info-value{font-size:22px}.game-controls{flex-direction:column;width:100%}.btn-game{width:100%}}