:root{color-scheme:light;--bg:#f8f8f6;--panel:#fff;--ink:#1a1b1a;--muted:#696969;--line:#e1e1e1;--soft:#f1f1f1}
html[data-theme=dark]{color-scheme:dark;--bg:#191b19;--panel:#262626;--ink:#f5f5f5;--muted:#bdbdbd;--line:#454545;--soft:#313131}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;line-height:1.5}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{max-width:100%}:focus-visible{outline:2px solid var(--ink);outline-offset:3px}.by-shell{width:min(1120px,calc(100% - 48px));margin-inline:auto}.by-skip{position:absolute;top:-60px;left:10px;padding:9px 12px;background:var(--ink);color:var(--bg);z-index:10}.by-skip:focus{top:10px}
.by-header{border-bottom:1px solid var(--line)}.by-header-inner{min-height:92px;display:flex;align-items:center;justify-content:center;position:relative}.by-brand{display:inline-flex;align-items:center}.by-brand img{display:block;object-fit:contain}html[data-theme=dark] .by-brand img{filter:brightness(0) invert(1)}.by-header-actions{position:absolute;right:0;display:flex;align-items:center;gap:12px}.by-theme{display:flex;gap:2px;padding:4px;border:1px solid var(--line);border-radius:10px}.by-theme button{border:0;background:transparent;color:var(--muted);width:28px;height:28px;border-radius:6px;font-size:17px;line-height:1}.by-theme button[aria-pressed=true]{background:var(--ink);color:var(--bg)}.by-login{display:inline-flex;align-items:center;justify-content:center;min-width:72px;height:37px;padding:0 13px;border:1px solid var(--line);border-radius:9px;background:var(--panel);font-size:13px;font-weight:700}.by-login:hover{border-color:var(--ink)}
.by-main{padding:30px 0 68px}.by-search{height:48px;width:min(390px,100%);display:flex;align-items:center;gap:10px;padding:0 15px;background:var(--panel);border:1px solid var(--line);border-radius:10px;color:var(--muted)}.by-search:focus-within{border-color:var(--ink)}.by-search input{border:0;background:transparent;color:var(--ink);min-width:0;flex:1;outline:0;font-size:13px}.by-search input::placeholder{color:var(--muted)}.by-search kbd{font-size:11px;border:1px solid var(--line);border-radius:4px;padding:1px 6px;color:var(--muted)}.by-groups{display:grid;gap:35px}.by-group-head{display:flex;align-items:center;justify-content:space-between;gap:15px;padding-bottom:14px;margin-bottom:15px;border-bottom:1px solid var(--line)}.by-group-head h2{font-size:16px;letter-spacing:-.025em;margin:0;font-weight:760}.by-group-head span,.by-group-head>a{font-size:12px;color:var(--muted)}.by-group-head>a:hover{color:var(--ink)}.by-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:11px}.by-card{display:flex;align-items:center;gap:12px;min-width:0;min-height:96px;padding:14px;border:1px solid var(--line);background:var(--panel);border-radius:11px;transition:transform .17s,border-color .17s}.by-card:hover{transform:translateY(-2px);border-color:var(--ink)}.by-card-icon{width:44px;height:44px;flex:none;border-radius:11px;border:1px solid var(--line);background:var(--soft);display:flex;align-items:center;justify-content:center;overflow:hidden;font-size:16px;font-weight:800}.by-card-icon img{width:100%;height:100%;object-fit:cover}.by-card-copy{flex:1;min-width:0}.by-card-copy strong{display:block;font-size:13.5px;font-weight:730;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.by-card-copy small{display:block;margin-top:3px;color:var(--muted);font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.by-card-arrow{color:var(--muted);font-size:16px;align-self:center}.by-card.is-bot{border-color:var(--ink)}.by-card.is-bot .by-card-copy small{font-size:11px}.by-empty{text-align:center;color:var(--muted);padding:45px 15px}
.by-updates{margin-top:43px}.by-update-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.by-update{display:grid;grid-template-columns:1fr auto;gap:4px 10px;min-height:105px;background:var(--panel);border:1px solid var(--line);border-radius:11px;padding:16px;transition:border-color .17s,transform .17s}.by-update:hover{border-color:var(--ink);transform:translateY(-2px)}.by-update time{grid-column:1;color:var(--muted);font-size:10px;letter-spacing:.04em}.by-update strong{grid-column:1;font-size:13.5px}.by-update>span:not(.by-update-arrow){grid-column:1;color:var(--muted);font-size:11px}.by-update-arrow{grid-column:2;grid-row:1/4;color:var(--muted);font-size:16px}
.by-footer{border-top:1px solid var(--line);padding:32px 0 38px}.by-footer-inner{display:flex;align-items:flex-start;justify-content:space-between;gap:24px}.by-footer-brand>a{font-size:16px;font-weight:800;letter-spacing:-.03em}.by-footer-brand p{margin:6px 0 0;color:var(--muted);font-size:11px}.by-footer-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px 18px;color:var(--muted);font-size:11px}.by-footer-links a:hover{text-decoration:underline}
@media(max-width:850px){.by-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.by-footer-inner{display:block}.by-footer-links{justify-content:flex-start;margin-top:20px}}
@media(max-width:600px){.by-shell{width:min(100% - 30px,1120px)}.by-header-inner{min-height:70px;justify-content:flex-start}.by-brand img{width:86px;height:auto}.by-header-actions{gap:7px}.by-theme button{width:25px;height:25px;font-size:15px}.by-login{min-width:58px;height:34px;font-size:12px}.by-main{padding-top:24px}.by-search-row{margin-bottom:34px}.by-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.by-card{min-height:82px;padding:10px;gap:9px}.by-card-icon{width:36px;height:36px;border-radius:8px}.by-card-copy strong{font-size:12px}.by-card-copy small{font-size:10px}.by-card-arrow{font-size:13px}.by-groups{gap:30px}.by-update-grid{grid-template-columns:1fr}.by-updates{margin-top:32px}.by-footer{padding:28px 0 34px}}
@media(max-width:390px){.by-theme button{width:23px}.by-grid{grid-template-columns:1fr}.by-card{min-height:70px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}
.by-theme-btn{width:37px;height:37px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:9px;background:var(--panel);color:var(--ink);padding:0;line-height:1}.by-theme-btn svg{width:17px;height:17px;display:block;flex:none}.by-theme-btn:hover{border-color:var(--ink)}
.by-home-nav{width:max-content;max-width:100%;min-height:52px;display:flex;align-items:center;justify-content:center;gap:3px;margin:0 auto 43px;padding:6px;border:1px solid var(--line);border-radius:13px;background:var(--panel);box-shadow:0 8px 30px rgba(0,0,0,.035)}.by-home-nav>a{padding:9px 14px;border-radius:8px;font-size:13px;font-weight:700;white-space:nowrap}.by-home-nav>a:hover{background:var(--soft)}#service-groups{scroll-margin-top:25px}
@media(max-width:600px){.by-theme-btn{width:34px;height:34px;font-size:17px}.by-home-nav{width:100%;flex-wrap:wrap;gap:2px;margin-bottom:35px}.by-home-nav>a{flex:1;text-align:center;padding:7px 8px;font-size:12px}}