#vchat{position:fixed;right:20px;bottom:20px;z-index:1000;font:14px/1.55 system-ui,-apple-system,Segoe UI,sans-serif}#vchat-fab{width:54px;height:54px;border:none;border-radius:50%;background:var(--accent);color:#fff;box-shadow:0 4px 16px #00000040;cursor:pointer;display:grid;place-items:center}#vchat-fab:hover{filter:brightness(1.1)}#vchat-panel{position:fixed;right:20px;bottom:86px;width:min(370px,calc(100vw - 40px));height:min(540px,calc(100dvh - 120px));display:flex;flex-direction:column;background:var(--surface);color:var(--ink);border:1px solid var(--hairline);border-radius:14px;box-shadow:0 12px 40px #0000004d;overflow:hidden}#vchat-panel[hidden]{display:none}#vchat-panel header{display:flex;align-items:center;gap:8px;padding:11px 14px;border-bottom:1px solid var(--hairline);background:var(--surface)}.vchat-dot{width:8px;height:8px;border-radius:50%;background:var(--good)}#vchat-panel header strong{font-size:13.5px;letter-spacing:.02em}#vchat-close{margin-left:auto;border:none;background:none;color:var(--muted);font-size:20px;cursor:pointer;line-height:1}#vchat-close:hover{color:var(--ink)}#vchat-log{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}.vchat-msg{max-width:88%;padding:8px 11px;border-radius:11px;overflow-wrap:break-word}.vchat-msg.user{align-self:flex-end;background:var(--accent);color:#fff;border-bottom-right-radius:4px;white-space:pre-wrap}.vchat-msg.assistant{align-self:flex-start;background:var(--accent-soft);color:var(--ink);border-bottom-left-radius:4px}.vchat-msg.err{align-self:flex-start;color:var(--crit);font-size:12.5px;background:none;padding:0}.vchat-msg.assistant :is(p,ul,ol,pre,blockquote,table,h3,h4,h5,h6){margin:0}.vchat-msg.assistant>*+*{margin-top:7px}.vchat-msg.assistant :is(h3,h4,h5,h6){font-size:13.5px;font-weight:700}.vchat-msg.assistant ul,.vchat-msg.assistant ol{padding-left:19px}.vchat-msg.assistant li+li{margin-top:3px}.vchat-msg.assistant a{color:var(--accent);text-decoration:underline}.vchat-msg.assistant code{background:#7d8a972e;border-radius:4px;padding:1px 4px;font:12px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.vchat-msg.assistant pre{background:#7d8a9724;border-radius:8px;padding:8px 10px;overflow-x:auto}.vchat-msg.assistant pre code{background:none;padding:0;font-size:12px}.vchat-msg.assistant blockquote{border-left:3px solid var(--hairline);padding-left:9px;color:var(--ink2)}.vchat-msg.assistant table{border-collapse:collapse;font-size:12.5px;display:block;max-width:100%;overflow-x:auto}.vchat-msg.assistant th,.vchat-msg.assistant td{border:1px solid var(--hairline);padding:3px 7px;text-align:left}.vchat-msg.assistant hr{border:none;border-top:1px solid var(--hairline)}.vchat-hello{color:var(--ink2);font-size:12.5px}#vchat-form{display:flex;gap:8px;padding:10px 12px;border-top:1px solid var(--hairline)}#vchat-input{flex:1;resize:none;border:1px solid var(--hairline);border-radius:9px;padding:7px 10px;background:var(--paper);color:var(--ink);font:inherit;max-height:90px}#vchat-send{border:none;border-radius:9px;background:var(--accent);color:#fff;padding:0 13px;cursor:pointer;font-size:15px}#vchat-send:disabled{opacity:.5;cursor:default}#vchat-panel footer{padding:6px 14px 9px;font-size:11px;color:var(--muted);border-top:1px solid var(--hairline)}@media(max-width:480px){#vchat-panel{right:10px;left:10px;bottom:80px;width:auto;height:min(560px,calc(100dvh - 100px))}}:root{--paper:#f4f6f8;--surface:#ffffff;--ink:#12263a;--ink2:#51606f;--muted:#7d8a97;--accent:#1c5cab;--accent-soft:#e3ecf7;--hairline:#dde4ea;--grid:#e7ecf1;--good:#0ca30c;--warn:#fab219;--crit:#d03b3b}@media(prefers-color-scheme:dark){:root{--paper:#0d1117;--surface:#161d26;--ink:#f2f6fa;--ink2:#aebbc8;--muted:#7d8a97;--accent:#5598e7;--accent-soft:#1a2c44;--hairline:#26313d;--grid:#222d39}}*{box-sizing:border-box;margin:0}body{background:var(--paper);color:var(--ink);font:15px/1.6 system-ui,-apple-system,Segoe UI,sans-serif}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.wrap{max-width:1000px;margin:0 auto;padding:0 20px 56px}header{border-bottom:1px solid var(--hairline);background:var(--surface)}.head-in{max-width:1000px;margin:0 auto;padding:14px 20px;display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px}.brand{display:flex;align-items:center;gap:14px}.tpl-logo{display:block;height:30px;width:auto}.tpl-logo.small{display:inline-block;height:18px}@media(prefers-color-scheme:dark){.tpl-logo{background:#fff;border-radius:6px;padding:3px 8px}}.mark{font-weight:800;letter-spacing:.14em;font-size:16px;color:var(--ink)}.mark span{color:var(--accent)}.site-tag{font-size:12px;color:var(--ink2);letter-spacing:.06em;text-transform:uppercase}nav{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto;position:relative}nav a{font-size:12.5px;padding:5px 11px;border-radius:999px;color:var(--ink2)}nav a:hover{background:var(--accent-soft);color:var(--ink);text-decoration:none}nav a.on{background:var(--accent);color:#fff;font-weight:600}.nav-group{position:relative}.nav-group summary{font-size:12.5px;padding:5px 11px;border-radius:999px;color:var(--ink2);cursor:pointer;list-style:none;user-select:none}.nav-group summary::-webkit-details-marker{display:none}.nav-group summary:hover{background:var(--accent-soft);color:var(--ink)}.nav-group summary.on{background:var(--accent);color:#fff;font-weight:600}.nav-group summary:after{content:"▾";font-size:9px;margin-left:5px;opacity:.7}.nav-group[open] summary:after{content:"▴"}.nav-group .menu{position:absolute;right:0;top:calc(100% + 6px);min-width:170px;background:var(--surface);border:1px solid var(--hairline);border-radius:10px;padding:6px;display:flex;flex-direction:column;gap:2px;box-shadow:0 10px 28px #12263a24;z-index:20}@media(prefers-color-scheme:dark){.nav-group .menu{box-shadow:0 10px 28px #00000073}}.nav-group .menu a{padding:7px 10px;border-radius:7px;font-size:12.5px;color:var(--ink2);white-space:nowrap}.nav-group .menu a:hover{background:var(--accent-soft);color:var(--ink);text-decoration:none}.nav-group .menu a.on{background:var(--accent-soft);color:var(--accent);font-weight:600}footer{margin-top:32px;font-size:12.5px;color:var(--muted);border-top:1px solid var(--hairline);padding-top:14px;line-height:1.7;display:flex;flex-wrap:wrap;gap:10px 32px;justify-content:space-between;align-items:center}.tpl-credit{white-space:nowrap;color:var(--ink2)}