:root{--sky:#0085ff;--sky-light:#1a96ff;--bg:#f0f6ff;--surface:#fff;--surface2:#e8f0fb;--border:#c8dcf5;--text:#0d1a2e;--muted:#4a6080;--code-bg:#e2ecf9;--code-text:#0d4080;--badge-bg:#fff3cd;--badge-text:#7a5800;--note-bg:#fff8e1;--shadow:0 2px 12px rgba(0,100,220,.10);--shadow-lg:0 6px 32px rgba(0,100,220,.14)}
@media (prefers-color-scheme:dark){:root{--sky:#1a96ff;--sky-light:#5ab4ff;--bg:#090f1a;--surface:#111b2b;--surface2:#182234;--border:#1e3050;--text:#e2eeff;--muted:#7a9cc0;--code-bg:#0d1e38;--code-text:#7dc4ff;--badge-bg:#2a2000;--badge-text:#f5cc60;--note-bg:#241d08;--shadow:0 2px 12px rgba(0,0,0,.4);--shadow-lg:0 6px 32px rgba(0,0,0,.5)}}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:'Sora',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.65;font-size:15px;min-height:100vh}
header{background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow);position:sticky;top:0;z-index:100}
.header-inner{max-width:820px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:14px}
.logo{width:44px;height:44px;background:var(--sky);border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 2px 8px rgba(0,133,255,.35)}
.logo svg{width:26px;height:26px;fill:#fff}
.header-text h1{font-size:1.1rem;font-weight:700;letter-spacing:-.01em;line-height:1.2}
.header-text p{font-size:.78rem;color:var(--muted);margin-top:2px}
.header-right{margin-left:auto;display:flex;align-items:center;gap:10px;flex-shrink:0}
.badge{background:var(--badge-bg);color:var(--badge-text);font-size:.72rem;font-weight:600;padding:4px 10px;border-radius:20px;letter-spacing:.03em}
.lang-switch{display:flex;border:1.5px solid var(--border);border-radius:8px;overflow:hidden;font-size:.78rem;font-weight:600}
.lang-switch a{padding:5px 11px;text-decoration:none;color:var(--muted)}
.lang-switch a.active{background:var(--sky);color:#fff}
.lang-switch a:not(.active):hover{background:var(--surface2);color:var(--text)}
nav.toc{max-width:820px;margin:0 auto;padding:0 24px 12px;display:flex;flex-wrap:wrap;gap:6px 14px;font-size:.8rem}
nav.toc a{color:var(--muted);text-decoration:none;font-weight:600}
nav.toc a:hover{color:var(--sky)}
main{max-width:820px;margin:0 auto;padding:32px 24px 80px;display:flex;flex-direction:column;gap:28px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px;box-shadow:var(--shadow)}
.card-title{font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--sky);margin-bottom:18px}
.card h3{font-size:.95rem;font-weight:600;margin:22px 0 8px}
.card h3:first-of-type{margin-top:0}
.card p{font-size:.9rem;color:var(--muted);line-height:1.7;margin-bottom:10px}
.card p:last-child{margin-bottom:0}
.card strong{color:var(--text)}
.intro{font-size:.95rem}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-top:16px}
.fact{background:var(--surface2);border:1px solid var(--border);border-radius:12px;padding:12px 14px;font-size:.84rem;color:var(--muted);line-height:1.5}
.fact b{display:block;color:var(--text);font-size:.88rem;margin-bottom:2px}
.steps{display:flex;flex-direction:column;gap:20px}
.step{display:flex;gap:16px;align-items:flex-start}
.step-num{width:32px;height:32px;border-radius:50%;background:var(--sky);color:#fff;font-size:.82rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px}
.step-body h3{margin:0 0 4px!important}
.step-body p{margin:0}
code,.cmd{font-family:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.8rem;background:var(--code-bg);color:var(--code-text);padding:2px 7px;border-radius:5px}
.cmd-table{width:100%;border-collapse:collapse;font-size:.875rem}
.cmd-table tr{border-bottom:1px solid var(--border)}
.cmd-table tr:last-child{border-bottom:none}
.cmd-table td{padding:9px 0;vertical-align:top}
.cmd-table td:first-child{padding-right:20px;width:40%}
.cmd-table .cmd{white-space:normal;display:inline-block}
.cmd-desc{color:var(--muted);line-height:1.5;font-size:.84rem}
.cmd-desc strong{color:var(--text)}
.note{background:var(--note-bg);border:1px solid var(--border);border-left:4px solid var(--sky);border-radius:8px;padding:10px 14px;margin:12px 0;font-size:.85rem;color:var(--muted);line-height:1.6}
.examples{display:flex;flex-direction:column;gap:18px}
.example{background:var(--surface2);border:1px solid var(--border);border-radius:12px;padding:18px 20px}
.example h3{font-size:.88rem!important;margin:0 0 10px!important}
.example ol{list-style:none;display:flex;flex-direction:column;gap:5px}
.example li{font-size:.84rem;color:var(--muted);display:flex;align-items:baseline;gap:8px;line-height:1.5}
.example li::before{content:'→';color:var(--sky);font-size:.75rem;flex-shrink:0}
.plain{padding-left:20px;display:flex;flex-direction:column;gap:8px}
.plain li{font-size:.875rem;color:var(--muted);line-height:1.6}
dl.faq dt{font-weight:600;font-size:.9rem;margin-top:16px}
dl.faq dt:first-child{margin-top:0}
dl.faq dd{font-size:.875rem;color:var(--muted);line-height:1.65;margin-top:3px}
.support-link{display:inline-flex;align-items:center;gap:10px;background:var(--sky);color:#fff;text-decoration:none;padding:12px 20px;border-radius:10px;font-size:.9rem;font-weight:600;box-shadow:0 2px 10px rgba(0,133,255,.35)}
.support-link:hover{background:var(--sky-light)}
.screenshots{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.screenshot-wrap{border-radius:10px;overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);cursor:pointer;transition:transform .15s,box-shadow .15s}
.screenshot-wrap:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.screenshot-wrap img{width:100%;height:auto;display:block}
.screenshot-label{font-size:.72rem;color:var(--muted);text-align:center;padding:6px;background:var(--surface);border-top:1px solid var(--border)}
.lightbox{display:none;position:fixed;inset:0;background:rgba(0,0,0,.85);z-index:999;align-items:center;justify-content:center;cursor:pointer}
.lightbox.open{display:flex}
.lightbox img{max-width:90vw;max-height:90vh;border-radius:10px}
@media (max-width:540px){.screenshots{grid-template-columns:1fr}header{position:static}.badge{display:none}.cmd-table td{display:block;width:100%!important;padding-right:0!important}.cmd-table td.cmd-desc{padding-top:0}}
.diagram{margin:14px 0 0}
.diagram figcaption{font-size:.78rem;color:var(--muted);margin-bottom:6px}
.diagram pre{font-family:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,'DejaVu Sans Mono',monospace;font-size:.74rem;line-height:1.35;background:var(--code-bg);color:var(--code-text);border-radius:10px;padding:12px 14px;overflow-x:auto;white-space:pre;tab-size:4;font-variant-ligatures:none}
@media (max-width:540px){.diagram pre{font-size:.66rem}}