:root{--bg:#0a0a0a;--bg-elev:#141414;--bg-card:#161616;--border:rgba(255,255,255,0.08);--border-strong:rgba(255,255,255,0.16);--text:#f5f5f7;--text-secondary:rgba(245,245,247,0.65);--text-tertiary:rgba(245,245,247,0.45);--accent:#5b9eff;--accent-hover:#7eb3ff;--success:#34c759;--radius:12px;--radius-lg:16px;--max:1100px}*{box-sizing:border-box}body,html{margin:0;padding:0;height:auto;overflow-x:hidden;overflow-y:visible;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,Hiragino Sans,Yu Gothic UI,sans-serif;font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}.marketing-header{position:sticky;top:0;z-index:50;backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%);background:rgba(10,10,10,.7);border-bottom:1px solid var(--border)}.marketing-nav{max-width:var(--max);margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}.marketing-brand{display:flex;align-items:center;gap:10px;font-family:Barlow Condensed,sans-serif;font-weight:500;font-size:22px;letter-spacing:.02em;color:var(--text)}.marketing-brand img{width:28px;height:28px;border-radius:7px}.marketing-nav-right{display:flex;align-items:center;gap:16px}.marketing-nav-link{color:var(--text-secondary);font-size:14px}.marketing-nav-link:hover{color:var(--text)}.lang-switcher{position:relative;display:inline-block}.lang-switcher-button{background:transparent;border:1px solid var(--border);color:var(--text-secondary);font-size:13px;padding:6px 12px;border-radius:8px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;font-family:inherit}.lang-switcher-button:hover{color:var(--text);border-color:var(--border-strong)}.lang-switcher-menu{position:absolute;top:calc(100% + 4px);right:0;background:var(--bg-elev);border:1px solid var(--border);border-radius:8px;padding:4px;min-width:140px;z-index:100;box-shadow:0 8px 24px rgba(0,0,0,.4)}.lang-switcher-item{display:block;width:100%;padding:8px 12px;background:transparent;border:0;border-radius:6px;color:var(--text-secondary);font-size:14px;text-align:left;cursor:pointer;text-decoration:none;font-family:inherit}.lang-switcher-item:hover{background:rgba(255,255,255,.05);color:var(--text)}.lang-switcher-item.active{color:var(--accent)}.ja-hint-banner{background:var(--bg-elev);border-bottom:1px solid var(--border);padding:10px 16px;display:flex;align-items:center;justify-content:center;gap:12px;font-size:13px;color:var(--text-secondary);flex-wrap:wrap}.ja-hint-banner a{color:var(--accent);font-weight:500}.ja-hint-banner-dismiss{background:transparent;border:0;color:var(--text-tertiary);cursor:pointer;font-size:18px;line-height:1;padding:4px 8px;font-family:inherit}.ja-hint-banner-dismiss:hover{color:var(--text)}.marketing-footer{max-width:var(--max);margin:0 auto;padding:24px;border-top:1px solid var(--border);color:var(--text-tertiary);font-size:13px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px}.marketing-footer-links{display:flex;gap:20px;flex-wrap:wrap;justify-content:center}.marketing-footer-links a{color:var(--text-tertiary)}.marketing-footer-links a:hover{color:var(--text)}.doc-main{max-width:760px;margin:0 auto;padding:56px 24px 96px}.doc-main h1{font-size:clamp(28px,4vw,40px);line-height:1.2;letter-spacing:-.02em;margin:0 0 8px}.doc-updated{color:var(--text-tertiary);font-size:13px;margin-bottom:32px}.doc-main h2{font-size:20px;margin:36px 0 12px;letter-spacing:-.01em}.doc-main h3{font-size:16px;margin:24px 0 8px;color:var(--text)}.doc-main p,.doc-main ul{color:var(--text-secondary);margin:0 0 14px}.doc-main ul{padding-left:22px}.doc-main li{margin:4px 0}.doc-main code{background:rgba(255,255,255,.06);padding:1px 6px;border-radius:4px;font-family:JetBrains Mono,SF Mono,Menlo,monospace;font-size:.92em}