:root{--p:#1d4ed8;--pd:#1e3a8a;--ink:#111827;--mut:#4b5563;--line:#d1d5db;--bg:#f3f4f6;--ok:#15803d;--bad:#b91c1c;--r:6px;--mono:ui-monospace,'SF Mono',Menlo,Consolas,monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Hiragino Sans","Noto Sans JP",sans-serif;color:var(--ink);background:#fff}
a{color:var(--p)}.wrap{max-width:1080px;margin:0 auto;padding:0 20px}.small{font-size:.85rem;color:var(--mut)}.center{text-align:center}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:9}
.top{position:sticky;top:0;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:5}
.bar{display:flex;align-items:center;justify-content:space-between;height:60px}.brand{display:flex;gap:8px;align-items:center;font-weight:700;color:var(--ink);text-decoration:none;font-size:1.1rem}
.langs{display:flex;gap:4px}.langs a{padding:6px 10px;border-radius:8px;text-decoration:none;color:var(--mut);font-size:.9rem}.langs a[aria-current]{background:var(--bg);color:var(--ink);font-weight:600}
.hero{background:linear-gradient(#fff,#f3f4f6);border-bottom:1px solid var(--line);padding:48px 0 40px}
h1{font-size:clamp(1.8rem,4.2vw,2.8rem);line-height:1.15;letter-spacing:-.02em;margin:0 0 14px}
.lead{font-size:1.1rem;color:var(--mut);margin:0 0 18px;max-width:60ch}
.trust{list-style:none;padding:0;margin:0 0 26px;display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.9rem;color:var(--mut)}.trust li::before{content:"✓ ";color:var(--ok);font-weight:700}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;}
.tool{border:2px solid var(--ink);box-shadow:6px 6px 0 var(--ink)}
.drop{display:flex;flex-direction:column;align-items:center;gap:4px;border:2px dashed #93c5fd;background:#eff6ff;border-radius:4px;padding:34px 16px;cursor:pointer;transition:.15s;text-align:center}
.drop:hover,.drop.over{border-color:var(--p);background:#dbeafe}.drop strong{color:var(--p);font-size:1.1rem}.drop span{color:var(--mut);font-size:.9rem}
.drop input{position:absolute;width:1px;height:1px;opacity:0}.drop:focus-within{outline:3px solid #a5b4fc}
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-top:14px}
.btn{display:inline-block;border:0;border-radius:10px;background:var(--p);color:#fff;padding:12px 20px;font:600 1rem/1 inherit;cursor:pointer;text-decoration:none}.btn:hover{background:var(--pd)}.btn:disabled{opacity:.6}
.btn.ghost{background:#fff;color:var(--p);border:1px solid #c7d2fe}.btn.ghost:hover{background:#eef2ff}
pre{background:#111827;color:#e2e8f0;border-radius:10px;padding:14px;overflow:auto;font:13px/1.5 var(--mono);margin:12px 0 0}#out:empty{display:none}
.stats{margin:12px 0 0;font-weight:600;color:var(--ok)}.stats:empty{display:none}#msg{margin:0;color:var(--mut)}
.sec{padding:44px 20px}.sec>h2{font-size:1.6rem;letter-spacing:-.01em;margin:0 0 20px;padding-bottom:10px;border-bottom:3px solid var(--ink);display:inline-block}
h3{font-size:1.05rem;margin:0 0 6px}.card p,.steps p{margin:0;color:var(--mut)}
.steps{list-style:none;padding:0;margin:0;display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.steps li{padding:4px 0 0 0;border-top:1px solid var(--line)}
.n{display:block;font:700 2rem/1 var(--mono);color:var(--p);margin:12px 0 8px}
.ba{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.ba figure{margin:0}figcaption{font-weight:600;margin-bottom:-4px}.bad{border-left:4px solid #f87171}.good{border-left:4px solid #34d399}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}.tile{text-decoration:none;color:inherit}.tile:hover{border-color:#a5b4fc}
.prices{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));max-width:720px;margin:0 0 14px}
.plan{display:flex;flex-direction:column;gap:10px}.plan .btn{text-align:center;margin-top:auto}.hot{border:2px solid var(--ink);box-shadow:6px 6px 0 var(--p)}.amt{font-size:2.2rem;font-weight:800;color:var(--ink)!important}.amt small{font-size:.9rem;color:var(--mut);font-weight:500}
.chk{list-style:none;padding:0;margin:0}.chk li{padding:4px 0}.chk li::before{content:"✓ ";color:var(--ok);font-weight:700}
details{max-width:820px;margin:0;border-bottom:1px solid var(--line);padding:4px 0}summary{cursor:pointer;list-style:none;padding:12px 0}summary::-webkit-details-marker{display:none}
summary h3{display:inline;font-size:1rem}summary::after{content:"+";float:right;color:var(--p);font-weight:700}details[open] summary::after{content:"–"}details p{color:var(--mut);margin:0 0 14px}
.links{padding-left:18px;color:var(--mut)}.prose{max-width:760px}
.foot{border-top:1px solid var(--line);background:var(--bg);padding:36px 0 24px;margin-top:20px;font-size:.92rem}.cols{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-bottom:18px}
.foot h2{font-size:.95rem;margin:0 0 8px}.foot ul{list-style:none;padding:0;margin:0}.foot li{padding:3px 0}.foot a{color:var(--mut)}
@media (max-width:600px){.hero{padding:32px 0 20px}.sec{padding:32px 16px}.row{flex-direction:column;align-items:stretch}.btn{width:100%;text-align:center}}

.split{display:grid;gap:32px;grid-template-columns:1fr}@media(min-width:960px){.split{grid-template-columns:5fr 6fr;align-items:start}}
.label{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font:600 1.15rem var(--mono);margin-top:6px}.label code{padding:8px 12px;border:1px solid var(--line);background:#fff;border-radius:4px}
.was{color:var(--bad);text-decoration:line-through}.now{color:var(--ok);background-image:repeating-linear-gradient(90deg,var(--ink) 0 2px,transparent 2px 4px,var(--ink) 4px 5px,transparent 5px 8px)!important;background-size:100% 6px!important;background-repeat:no-repeat!important;background-position:bottom!important;padding-bottom:14px!important}
.center{text-align:left}