:root { color-scheme:dark; --bg:#080d12;--panel:#121b24;--stroke:#293744;--orange:#ff8525;--light:#f2f5f8;--muted:#a7b6c2 }
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(ellipse at top right,#182431 0%,#080d12 48%);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",Meiryo,sans-serif;line-height:1.85;color:var(--light);-webkit-font-smoothing:antialiased}
a{color:var(--orange);text-underline-offset:4px}a:hover{color:#ffb376}
header{position:sticky;top:0;z-index:8;background:#080d12ee;backdrop-filter:blur(12px);border-bottom:1px solid var(--stroke)}
.header-inner{max-width:1000px;padding:12px 24px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{text-decoration:none;color:var(--light);font-size:22px;font-weight:900;letter-spacing:.02em}.logo span{color:var(--orange)}
nav{display:flex;gap:18px;flex-wrap:wrap}nav a{font-size:13px;color:#c6d0d9;text-decoration:none}nav a[aria-current="page"]{color:var(--orange);font-weight:800}
main{max-width:860px;padding:54px 24px 95px;margin:0 auto;min-height:calc(100vh - 160px)}
.eyebrow{letter-spacing:.16em;font-size:11px;color:var(--orange);font-weight:800;margin-bottom:10px}h1{font-size:clamp(30px,6vw,48px);line-height:1.35;margin:0 0 15px;letter-spacing:-.03em}
.lead{font-size:16px;color:var(--muted);margin:0 0 36px}.meta{color:#899eae;font-size:12px;margin:0 0 24px}
.content{background:var(--panel);border:1px solid var(--stroke);border-radius:20px;padding:30px clamp(18px,5vw,40px)}
.content section+section{border-top:1px solid var(--stroke);padding-top:23px;margin-top:25px}
h2{font-size:20px;margin:0 0 10px;color:var(--light);line-height:1.55}h3{font-size:15px;margin:19px 0 5px}p{margin:9px 0;color:#cbd6df}ul{padding-left:23px;color:#cbd6df;margin:8px 0}li{margin:6px 0}
.cardrow{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:35px 0}.card{display:block;padding:25px;border-radius:16px;background:var(--panel);border:1px solid var(--stroke);color:var(--light);text-decoration:none;transition:border-color .15s}.card:hover{border-color:var(--orange)}.card strong{display:block;font-size:18px}.card small{display:block;color:var(--muted);margin-top:6px}.button{display:inline-flex;align-items:center;background:var(--orange);color:#16120d;text-decoration:none;font-weight:900;padding:13px 22px;border-radius:12px}.button:hover{color:#16120d;background:#ffa65c}
.note{background:#1d2934;border:1px solid #374758;border-radius:12px;color:#cbd5de;padding:14px 18px;font-size:13px}
footer{border-top:1px solid var(--stroke);padding:26px 24px;color:#889eae;font-size:12px}footer .inner{max-width:1000px;margin:auto;display:flex;gap:12px;justify-content:space-between;flex-wrap:wrap}footer a{color:#b4c0c9;text-decoration:none}
@media(max-width:650px){.header-inner{align-items:flex-start;flex-direction:column;gap:4px}.cardrow{grid-template-columns:1fr}main{padding-top:37px}.content{padding:22px 18px}nav{gap:15px}}