:root{--bg:#090806;--bg-main:#12100c;--bg-card:#1b1711;--bg-hover:#2b2117;--maple:#b84a32;--orange:#d97832;--ginkgo:#d9a441;--gold:#edbd62;--text:#f3eadc;--text-soft:#c8b8a0;--text-muted:#927d65;--border:#3c3023;--border-card:#4a3827}*{box-sizing:border-box;scrollbar-color:#62482e #0d0b08;scrollbar-width:thin}html{background:var(--bg);margin:0;padding:0}body{min-height:100vh;color:var(--text);background:var(--bg);margin:0;padding:2rem 1.5rem;font-family:Zen Kaku Gothic New,Noto Sans JP,sans-serif;line-height:1.8}header{z-index:10;border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:2rem;width:100%;max-width:900px;margin:0 auto;display:flex;position:relative}.site-logo{flex-shrink:0;align-items:center;text-decoration:none;display:flex}.site-logo img{object-fit:contain;width:130px;height:auto;transition:transform .25s,opacity .25s;display:block}.site-logo:hover img{opacity:.9;transform:scale(1.03)}nav{border-bottom:none;justify-content:flex-end;align-items:center;gap:2rem;padding:.6rem 0;display:flex}nav a{color:var(--ginkgo);letter-spacing:.08em;font-family:Shippori Mincho,Yu Mincho,YuMincho,serif;font-weight:500;text-decoration:none;transition:color .2s,opacity .2s,text-shadow .2s;position:relative}nav a:hover{color:var(--gold);opacity:.95;text-shadow:0 0 8px #d9a44140}nav a:after{content:"";background:linear-gradient(90deg, var(--maple), var(--orange), var(--ginkgo));width:0;height:2px;transition:width .25s;position:absolute;bottom:-.5rem;left:50%;transform:translate(-50%)}nav a:hover:after{width:60%}nav a.active{color:var(--gold)}nav a.active:after{width:100%}main{z-index:10;width:100%;max-width:900px;box-shadow:none;background:0 0;border:none;border-radius:0;margin:1.5rem auto 0;padding:2.5rem;position:relative}main:before{content:"";background:linear-gradient(90deg, var(--maple), var(--orange), var(--ginkgo));width:70px;height:2px;margin-bottom:2rem;display:block}h1,h2,h3{color:var(--text);letter-spacing:.1em;font-family:Shippori Mincho,Yu Mincho,YuMincho,serif;font-weight:600}h1{text-shadow:0 0 10px #d9a44114;font-size:2.6rem}h2{font-size:1.5rem}h3{font-size:1.1rem}p{color:var(--text-soft)}a{color:var(--ginkgo)}a:hover{color:var(--gold)}button{color:var(--text);background:var(--bg-card);border:1px solid var(--border-card);font:inherit;cursor:pointer;border-radius:6px;padding:.6rem 1rem;transition:background-color .2s,border-color .2s,color .2s,box-shadow .2s}button:hover{color:var(--gold);background:var(--bg-hover);border-color:var(--orange);box-shadow:0 0 10px #d978321f}input{color:var(--text);background:var(--bg-card);border:1px solid var(--border-card);font:inherit;border-radius:6px;outline:none;padding:.65rem .8rem;transition:border-color .2s,box-shadow .2s}input::placeholder{color:var(--text-muted)}input:focus{border-color:var(--ginkgo);box-shadow:0 0 8px #d9a44126}footer{z-index:10;max-width:900px;color:var(--text-muted);border-top:1px solid var(--border);margin:2rem auto 0;padding-top:1rem;font-family:Shippori Mincho,Yu Mincho,YuMincho,serif;font-size:.85rem;position:relative}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#0d0b08}::-webkit-scrollbar-thumb{background:#62482e;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#8a6338}::selection{color:#fff8eb;background:var(--maple)}img[alt=NEXUSより]{width:min(100%,600px);height:auto;margin:0 auto;display:block}@media (width<=700px){body{padding:1rem}header{flex-direction:column;align-items:flex-start;gap:.5rem;padding-bottom:1rem}.site-logo img{width:110px}nav{flex-wrap:wrap;gap:1rem;width:100%;padding:.5rem 0 0}main{margin-top:1rem;padding:1.5rem}h1{font-size:2rem}}#autumn-container[data-astro-cid-zstvg4yk]{pointer-events:none;z-index:9999;width:100vw;height:100vh;position:fixed;inset:0;overflow:hidden}.autumn-particle{pointer-events:none;will-change:transform, opacity;width:0;height:0;position:absolute}.autumn-leaf{transform-origin:50%;pointer-events:none;user-select:none;filter:drop-shadow(0 3px 4px #0000004d);will-change:transform;height:auto;animation-name:leaf-sway;animation-timing-function:ease-in-out;animation-iteration-count:infinite;animation-direction:alternate;position:absolute;top:0;left:0;transform:translate(-50%,-50%)}.fallen{filter:drop-shadow(0 3px 4px #5a32144d)}.maple{filter:drop-shadow(0 3px 5px #aa37234d)}.ginkgo{filter:drop-shadow(0 3px 5px #be8c234d)}@keyframes leaf-sway{0%{transform:translate(calc(-50% - var(--sway)), -50%) rotate(var(--rotation-start))}to{transform:translate(calc(-50% + var(--sway)), -50%) rotate(var(--rotation-end))}}