:root{--bg:#000;--card:#1c1c1e;--fg:#f5f5f7;--mut:#98989d;--sep:rgba(255,255,255,.1);--g:#30d158;--gt:rgba(48,209,88,.14);--ease:cubic-bezier(.25,.1,.25,1)}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;color-scheme:dark;background:#000}
body{background:var(--bg);color:var(--fg);font:17px/1.47 -apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","PingFang SC","Hiragino Sans GB","Helvetica Neue","Microsoft YaHei",sans-serif;letter-spacing:-.01em;-webkit-font-smoothing:antialiased}
.skip{position:absolute;left:-999px;top:8px;background:var(--g);color:#000;padding:8px 14px;border-radius:10px}.skip:focus{left:8px}
.skip:focus-visible{outline:3px solid #fff}
.wrap{max-width:720px;margin:0 auto;padding:0 20px}
.hero{text-align:center;padding:72px 0 48px}
.logo{display:block;width:120px;height:120px;margin:0 auto 24px;border-radius:50%}
h1{font-size:29px;font-weight:700;letter-spacing:-.03em;line-height:1.1}
.tag{margin-top:10px;color:var(--mut);font-size:17px}
section{margin-top:44px}
h2{font-size:22px;font-weight:700;letter-spacing:-.02em;margin:0 4px 14px}
h2 span+span{font-size:15px;font-weight:500;color:var(--mut);margin-left:6px}
.list,.grid{display:grid;gap:12px}

.card{position:relative;display:flex;align-items:center;gap:14px;padding:16px 44px 16px 18px;background:var(--card);border-radius:20px;color:var(--fg);text-decoration:none;transition:transform .2s var(--ease),background-color .2s ease,color .2s ease,box-shadow .2s ease}
.ico,.mark{flex:none;width:44px;height:44px;border-radius:11px;display:grid;place-items:center;background:var(--gt);color:var(--g);transition:background-color .2s ease,color .2s ease}
.ico svg{width:22px;height:22px}
.mark{font-weight:700;font-size:16px}
.txt{flex:1;min-width:0;display:flex;flex-direction:column}
.txt strong{font-size:17px;font-weight:600}
.txt small{font-size:14px;color:var(--mut);transition:color .2s ease}
.arr{position:absolute;right:18px;top:50%;margin-top:-11px;font-size:18px;line-height:22px;font-weight:600;color:var(--g);opacity:0;transform:translateX(-6px);transition:opacity .2s ease,transform .2s ease,color .2s ease}
.ex{align-items:flex-start}.ex .mark{margin-top:2px}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:8px}
.badge{font-size:12px;font-weight:600;padding:2px 9px;border-radius:99px;color:var(--g);background:var(--gt);transition:background-color .2s ease,color .2s ease}
.code{font-size:13px;color:var(--mut);transition:color .2s ease}
.code b{color:var(--fg);font-weight:600;font-family:ui-monospace,"SF Mono",Menlo,monospace;letter-spacing:.04em;margin-left:2px;transition:color .2s ease}

/* Hover / keyboard focus: solid green card, black content */
.card:hover,.card:focus-visible{transform:translateY(-2px) scale(1.012);background:var(--g);color:#000;box-shadow:0 10px 30px -8px rgba(48,209,88,.5)}
.card:focus-visible{outline:2px solid #fff;outline-offset:3px}
.card:hover :is(.ico,.mark),.card:focus-visible :is(.ico,.mark){background:#000;color:var(--g)}
.card:hover :is(small,.code,.code b,.arr),.card:focus-visible :is(small,.code,.code b,.arr){color:#000}
.card:hover .badge,.card:focus-visible .badge{background:rgba(0,0,0,.14);color:#000}
.card:hover .arr,.card:focus-visible .arr{opacity:1;transform:none}

.foot{margin-top:64px;padding-top:24px;padding-bottom:48px;border-top:1px solid var(--sep);color:var(--mut);font-size:12px;line-height:1.6;text-align:center}
.foot p+p{margin-top:10px}
@media(min-width:720px){.hero{padding:112px 0 56px}h1{font-size:40px}.tag{font-size:21px}.logo{width:144px;height:144px;border-radius:50%}.grid{grid-template-columns:1fr 1fr}.list{grid-template-columns:repeat(3,1fr)}.list .card{flex-direction:column;align-items:flex-start;padding:22px}.list .arr{top:22px;margin-top:0}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}.card:hover,.card:focus-visible{transform:none}.arr{transform:none!important}}
.lang{position:fixed;top:max(14px,env(safe-area-inset-top));right:max(14px,env(safe-area-inset-right));z-index:10;display:flex;padding:3px;gap:2px;background:rgba(28,28,30,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border:1px solid rgba(255,255,255,.08);border-radius:99px}
.lang button{font:600 13px/1 -apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;color:var(--mut);background:transparent;border:0;border-radius:99px;min-width:40px;padding:7px 12px;cursor:pointer;transition:background-color .2s ease,color .2s ease}
.lang button:hover{color:var(--fg)}
.lang button[aria-pressed="true"]{background:var(--g);color:#000}
.lang button:focus-visible{outline:2px solid #fff;outline-offset:2px}