:root{--paper:#f4efe5;--panel:#fffdf8;--ink:#181817;--muted:#69645c;--rule:#cfc7b9;--accent:#b53a24;--blue:#274c77;--green:#127a52;
--sans:Inter,"Noto Sans JP","Noto Sans TC","Hiragino Sans","PingFang TC","Yu Gothic",system-ui,sans-serif;--serif:Georgia,"Noto Serif JP","Noto Serif TC",serif}
@media (prefers-color-scheme:dark){:root{--paper:#161614;--panel:#1f1f1c;--ink:#efeae0;--muted:#a49e92;--rule:#3a3832;--accent:#ee7a62;--blue:#8fb1d9;--green:#5cc79b}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.7 var(--sans)}
a{color:var(--blue)}a:hover{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--paper);padding:8px 12px}.skip:focus{left:8px;top:8px;z-index:9}
.top{border-bottom:1px solid var(--rule);background:var(--paper)}
.bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px 24px;padding-top:12px;padding-bottom:12px}
.brand{font:700 20px var(--serif);color:var(--ink);text-decoration:none;letter-spacing:.01em}
nav{display:flex;flex-wrap:wrap;gap:4px 18px;flex:1}
nav a,.langs a{white-space:nowrap}
nav a,.langs a{color:var(--ink);text-decoration:none;font-size:15px;padding:4px 0;border-bottom:2px solid transparent}
nav a:hover,.langs a:hover{border-color:var(--rule)}
nav a[aria-current],.langs a[aria-current]{border-color:var(--accent);font-weight:600}
.langs{display:flex;gap:14px}
.hero{padding:64px 0 40px;border-bottom:1px solid var(--rule)}
.eyebrow{margin:0 0 12px;color:var(--accent);font:600 14px var(--sans);letter-spacing:.08em;text-transform:uppercase}
h1{font:700 clamp(32px,6vw,52px)/1.15 var(--serif);margin:0 0 20px;max-width:18ch;text-wrap:balance}
.prose h1{font-size:clamp(28px,5vw,40px);max-width:none}
.lede{font-size:19px;color:var(--ink);max-width:62ch;margin:0 0 8px}
h2{font:700 24px/1.3 var(--serif);margin:0 0 16px}
h3{font:700 18px/1.4 var(--sans);margin:0}
.block{padding:44px 16px 8px}.wrap.block{padding-left:16px;padding-right:16px}
.prose{padding-top:48px;padding-bottom:48px;max-width:760px}
.prose .block{padding:24px 0 0}
.prose ul{padding-left:1.2em}.prose li{margin:0 0 10px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--panel);border:1px solid var(--rule);border-radius:6px;padding:20px;display:flex;flex-direction:column;gap:10px}
.card p{margin:0;font-size:16px}
.card-head{display:flex;justify-content:space-between;align-items:center;gap:8px}
.card-head h3{font:700 22px var(--serif)}
.tag{font-size:12px;font-weight:600;border:1px solid currentColor;border-radius:99px;padding:1px 10px;white-space:nowrap;color:var(--muted)}
.tag-japan,.tag-taiwan{color:var(--green)}
.src{color:var(--muted);font-size:14px!important}.src span{font-weight:600;margin-right:4px}
.btn{margin-top:auto;display:inline-flex;flex-wrap:wrap;gap:2px 10px;align-items:baseline;align-self:flex-start;padding:8px 14px;border:1px solid var(--ink);border-radius:4px;color:var(--ink);text-decoration:none;font-weight:600;font-size:15px}
.btn:hover{background:var(--ink);color:var(--paper)}
.host{font-weight:400;color:inherit;opacity:.7;font-size:13px}
.steps{list-style:none;counter-reset:s;margin:0 0 16px;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.steps li{counter-increment:s;border-top:2px solid var(--ink);padding-top:12px}
.steps li::before{content:counter(s,decimal-leading-zero);display:block;color:var(--accent);font:600 14px var(--sans);margin-bottom:4px}
.steps p{margin:6px 0 0;font-size:15px;color:var(--muted)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.mail{font-weight:600;overflow-wrap:anywhere}
.foot{margin-top:64px;border-top:1px solid var(--rule);padding:24px 0 40px;font-size:14px;color:var(--muted)}
.foot p{margin:4px 0}.muted{color:var(--muted)}
@media (max-width:820px){.cards,.steps{grid-template-columns:1fr 1fr}.two{grid-template-columns:1fr}}
@media (max-width:560px){.cards,.steps{grid-template-columns:1fr}.hero{padding:40px 0 28px}body{font-size:16px}}
@media (max-width:640px){.bar{gap:4px 16px}nav{flex:1 1 100%;order:3;gap:4px 16px}.langs{margin-left:auto}}