:root{--bg:#F6F5FB;--surface:#fff;--surface2:#EEECF7;--ink:#15141C;--text:#15141C;--text2:#45435A;--muted:#6A6880;--yellow:#FFD23F;--pink:#FF5C93;--mint:#25C99A;--sky:#4F86F7;--violet:#8B5CF6;--peach:#FFB48A;--shadow:4px 4px 0 var(--ink)}
@media(prefers-color-scheme:dark){:root{--bg:#0E0D14;--surface:#1A1924;--surface2:#24222F;--ink:#F5F4FF;--text:#F5F4FF;--text2:#CBC8E0;--muted:#9A97B3}}
*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font:16px/1.6 system-ui,-apple-system,'Segoe UI',Roboto,'Noto Sans','Hiragino Sans','Noto Sans JP',sans-serif}
h1,h2,h3{font-family:'Arial Black','Hiragino Kaku Gothic ProN','Noto Sans JP',system-ui,sans-serif;font-weight:900;letter-spacing:-.01em;line-height:1.15}
a{color:var(--text);text-decoration-thickness:2px;text-underline-offset:3px}code{background:var(--surface2);padding:1px 6px;border-radius:6px;border:1.5px solid var(--ink)}.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
.nav{position:sticky;top:0;z-index:10;background:var(--bg);border-bottom:2px solid var(--ink)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font:900 22px 'Arial Black',system-ui,sans-serif}
.brand img{border-radius:10px;border:2px solid var(--ink)}.nav nav{display:flex;gap:20px;align-items:center}.nav nav a{color:var(--text2);text-decoration:none;font-weight:700;font-size:15px}
.cta{background:var(--yellow);color:#15141C!important;padding:8px 16px;border-radius:12px;font-weight:900!important;border:2px solid var(--ink);box-shadow:2px 2px 0 var(--ink)}
.hero{padding:64px 0 56px;background-image:radial-gradient(rgba(21,20,28,.12) 1.4px,transparent 1.6px);background-size:8px 8px}.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(38px,5.6vw,64px)}.hero h1 em{font-style:normal;background:var(--yellow);color:#15141C;padding:0 .15em;border:3px solid var(--ink);display:inline-block;transform:rotate(-2deg);box-shadow:var(--shadow)}
.lead{color:var(--text2);font-size:19px;margin:20px 0 26px;max-width:540px}.badges{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:14px;font:900 16px system-ui,sans-serif;text-decoration:none;background:var(--yellow);color:#15141C;border:2px solid var(--ink);box-shadow:var(--shadow)}
.btn.ghost{background:var(--surface)}.btn:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--ink)}
.note{color:var(--muted);font-size:14px;margin-top:16px}
.seal{position:relative;width:min(320px,78vw);aspect-ratio:1;margin:0 auto}
.seal .mi{position:absolute;inset:0;border-radius:36px;background:var(--yellow);display:grid;place-items:center;border:4px solid var(--ink);box-shadow:10px 10px 0 var(--ink);transform:rotate(-4deg)}
.seal .hz{font:900 clamp(120px,24vw,190px)/1 'Hiragino Kaku Gothic ProN','Noto Sans JP',sans-serif;color:#15141C}
.seal .stamp{position:absolute;right:-10px;bottom:-12px;background:var(--pink);color:#fff;font:900 22px system-ui;padding:6px 16px;border-radius:12px;border:3px solid var(--ink);transform:rotate(5deg)}
section{padding:64px 0}section h2{font-size:clamp(28px,4vw,40px);margin-bottom:10px}.sub{color:var(--text2);max-width:700px;margin-bottom:30px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.card{background:var(--surface);border:2px solid var(--ink);border-radius:16px;padding:22px;box-shadow:var(--shadow)}.card h3{font-size:19px;margin:12px 0 6px}.card p{color:var(--text2);font-size:15px}
.ico{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;font:900 24px 'Hiragino Kaku Gothic ProN','Noto Sans JP',sans-serif;background:var(--yellow);color:#15141C;border:2px solid var(--ink)}.ico.p{background:var(--pink)}.ico.m{background:var(--mint)}.ico.s{background:var(--sky);color:#fff}.ico.v{background:var(--violet);color:#fff}.ico.o{background:var(--peach)}
.alt{background:var(--surface2);border-block:2px solid var(--ink)}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}.plan{background:var(--surface);border:2px solid var(--ink);border-radius:14px;padding:18px;text-align:center;box-shadow:var(--shadow)}.plan b{display:block;font:900 24px system-ui}.plan.best{background:var(--yellow);color:#15141C}
.doc{max-width:760px;padding-top:48px;padding-bottom:80px}.doc h1{font-size:42px;margin-bottom:6px}.doc h2{font-size:24px;margin:34px 0 8px}.doc h3{font-size:18px;margin:20px 0 6px}.doc p,.doc li{color:var(--text2);margin-bottom:10px}.doc ul{padding-left:22px}.doc .meta{color:var(--muted);margin-bottom:24px}.doc b{color:var(--text)}
footer{border-top:2px solid var(--ink);padding:28px 0;color:var(--muted);font-size:14px}footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}footer a{color:var(--text2);margin-left:16px;text-decoration:none}
@media(max-width:820px){.hero .wrap{grid-template-columns:1fr}.hero{padding-top:36px}.nav nav a:not(.cta){display:none}}