:root{
  --bg:#fafbf8;--card:#ffffff;--ink:#16221c;--mut:#5c6a62;--line:#e2e8e0;
  --green:#1aa664;--green2:#0d7a45;--lime:#7ed957;--dark:#0c1a14;--dark2:#12281c;--maxw:1140px;
  --mono:"SFMono-Regular","Menlo","Consolas","Noto Sans Mono CJK JP",monospace;
  --sans:"Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP",Meiryo,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.8}
a{color:var(--green2);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}

.hd{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.hd-in{display:flex;align-items:center;justify-content:space-between;padding:12px 22px;max-width:var(--maxw);margin:0 auto;gap:14px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:20px}
.logo .lmark{width:34px;height:34px;border-radius:8px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:18px;font-weight:900}
.logo small{display:block;font-size:8.5px;font-weight:600;letter-spacing:2px;color:var(--mut);line-height:1}
.nav-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--ink)}
.nav{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.nav a{color:var(--mut);padding:8px 12px;border-radius:8px;font-size:14px}
.nav a:hover{background:#eef7f1;color:var(--ink);text-decoration:none}
.nav a.active{background:var(--green);color:#fff;font-weight:700}
.btn{display:inline-block;background:var(--green);color:#fff;padding:11px 24px;border-radius:8px;font-weight:700;font-size:15px}
.btn:hover{background:var(--green2);text-decoration:none}
.btn.ghost{background:#fff;border:2px solid var(--green);color:var(--green)}
.btn.cta-n{padding:9px 16px;font-size:13px}

.hero{background:var(--dark);color:#fff;padding:56px 0 60px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-100px;top:-80px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(26,166,100,.3),transparent 70%)}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.eyebrow{color:var(--lime);font-weight:700;letter-spacing:2px;font-size:13px;font-family:var(--mono)}
.hero h1{font-size:clamp(24px,4.2vw,42px);line-height:1.25;margin:12px 0 16px;font-weight:800}
.hero h1 .g{color:var(--lime)}
.hero p.sub{color:#9fb4a8}
.cta-row{display:flex;gap:14px;margin-top:24px;flex-wrap:wrap}
.code{background:var(--dark2);border:1px solid #1c3a2a;border-radius:12px;overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.4)}
.code .bar{display:flex;gap:6px;padding:10px 14px;border-bottom:1px solid #1c3a2a;background:#0e221a}
.code .dot{width:11px;height:11px;border-radius:50%;background:#2c3b33}
.code .dot:nth-child(1){background:#ff5f56}.code .dot:nth-child(2){background:#ffbd2e}.code .dot:nth-child(3){background:#27c93f}
.code pre{margin:0;padding:18px 16px;font-family:var(--mono);font-size:12.5px;line-height:1.7;color:#c9e6d4;overflow-x:auto}
.code .c{color:#6c8a78}.code .k{color:#8fd9a8}.code .s{color:#ffd479}

.blk{padding:50px 0}
.blk.alt{background:#fff}
h2.sec{font-size:clamp(21px,3vw,28px);font-weight:800;margin-bottom:10px}
.sec-center{text-align:center}
.sec-sub{color:var(--mut);max-width:720px}
.grid{display:grid;gap:16px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px}
.card h3{font-size:16px;margin-bottom:8px}
.card p{color:var(--mut);font-size:14px}
.card .ic{font-size:24px;margin-bottom:10px}
.card .tag{display:inline-block;font-family:var(--mono);font-size:10.5px;color:var(--green2);background:#eef7f1;border:1px solid #d4ecdd;padding:2px 8px;border-radius:4px;margin-bottom:8px}
.note{background:#eff7f2;border-left:4px solid var(--green);padding:14px 18px;border-radius:0 8px 8px 0;font-size:13.5px;color:#365;margin-top:26px}
.prose p{margin-bottom:16px;color:#3d4c44}
.prose h3{color:var(--ink);margin:24px 0 8px;font-size:19px}
.narrow{max-width:800px}
ul.tick{list-style:none;margin:12px 0}
ul.tick li{padding:7px 0 7px 30px;position:relative;color:#37463e}
ul.tick li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:800}
code.inline{background:#eef7f1;border:1px solid #d4ecdd;color:var(--green2);padding:1px 6px;border-radius:4px;font-family:var(--mono);font-size:.9em}
.split{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:start}
.panel{background:var(--dark);color:#fff;border-radius:12px;padding:24px;font-family:var(--mono);font-size:13px}
.panel h3{color:var(--lime);font-size:12px;letter-spacing:2px;margin-bottom:14px}
.ph-line{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid #1c3a2a;font-size:13px}
.ph-line b{color:#fff}
.ph-line span{color:#8fb29f;text-align:right}

.ft{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:40px 0}
footer.s{background:var(--dark);color:#9fb4a8;font-size:13px}
footer.s .flogo{color:#fff;font-weight:800;font-size:18px;margin-bottom:10px}
footer.s nav{display:flex;gap:16px;flex-wrap:wrap}
footer.s nav a{color:#b9d0c2}
footer.s .copy{margin-top:20px;font-size:12px;border-top:1px solid #1c3a2a;padding-top:16px;color:#65806f}

@media(max-width:980px){.g3,.g4{grid-template-columns:repeat(2,1fr)}.hero .wrap{grid-template-columns:1fr}.split{grid-template-columns:1fr}}
@media(max-width:680px){
  .nav-toggle{display:block}
  .nav{display:none;flex-direction:column;align-items:stretch;background:#fff;padding:12px;border-radius:12px;position:absolute;top:100%;left:0;right:0;margin:0 10px;border:1px solid var(--line);box-shadow:0 8px 24px rgba(12,26,20,.12)}
  .nav.open{display:flex}
  .hd-in{flex-wrap:wrap;position:relative}
  .g3,.g4,.g2{grid-template-columns:1fr}
}
h1.pg{font-size:clamp(28px,3.8vw,38px);font-weight:800;margin:12px 0 8px;line-height:1.4}