:root{
  --cream:#f7f4ed;--paper:#fcfbf8;--ink:#1c1c1c;--ink-82:rgba(28,28,28,.82);--muted:#5f5f5d;
  --line:#eceae4;--line-strong:rgba(28,28,28,.4);--tint:rgba(28,28,28,.04);--tint-3:rgba(28,28,28,.03);
  --mark:#ff4060;--focus:0 4px 12px rgba(0,0,0,.1);
  --inset:rgba(255,255,255,.2) 0 .5px 0 0 inset,rgba(0,0,0,.2) 0 0 0 .5px inset,rgba(0,0,0,.05) 0 1px 2px 0;
  --font:"Pretendard Variable",Pretendard,ui-sans-serif,system-ui,-apple-system,"Segoe UI","Malgun Gothic","Apple SD Gothic Neo",sans-serif;
}
:lang(ja){--font:"Pretendard Variable",Pretendard,"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic UI","Yu Gothic",Meiryo,sans-serif}
:lang(zh){--font:"Pretendard Variable",Pretendard,"PingFang SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--cream);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.6;font-weight:400;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--line-strong);text-underline-offset:3px}
a:hover{text-decoration-color:var(--ink)}
:focus-visible{outline:none;box-shadow:var(--focus),0 0 0 2px rgba(59,130,246,.5);border-radius:6px}
code,kbd{font-family:ui-monospace,"Cascadia Code",Consolas,monospace;font-size:.88em;background:var(--tint);border:1px solid var(--line);border-radius:4px;padding:.05em .4em;overflow-wrap:anywhere}
b,strong{font-weight:600}
b.ui{font-family:ui-sans-serif,system-ui,"Segoe UI",sans-serif;font-weight:500;font-size:.9em;background:#2e2e2e;color:#f1f1f1;border-radius:4px;padding:.08em .5em;overflow-wrap:anywhere;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.badge{display:inline-grid;place-items:center;min-width:1.45em;height:1.45em;padding:0 .3em;border-radius:9999px;background:var(--mark);color:#fff;font-size:.78em;font-weight:600;line-height:1;margin:0 .2em 0 .05em;vertical-align:.08em;font-variant-numeric:tabular-nums}

/* top bar */
.bar{position:sticky;top:0;z-index:20;background:rgba(247,244,237,.86);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid transparent;transition:border-color .2s}
.bar.scrolled{border-bottom-color:var(--line)}
.bar-in{max-width:1200px;margin:0 auto;height:60px;padding:0 20px;display:flex;align-items:center;gap:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:600;letter-spacing:-.01em;white-space:nowrap;min-width:0}
.brand .dot{width:22px;height:22px;border-radius:7px;background:conic-gradient(from 200deg,#ff8fab,#ffb38a,#9db8ff,#ff8fab);box-shadow:var(--inset);flex:none}
.brand small{font-weight:400;color:var(--muted);font-size:14px;overflow:hidden;text-overflow:ellipsis}
.bar-sp{flex:1}
.lang{position:relative}
.lang select{appearance:none;-webkit-appearance:none;font:inherit;font-size:14px;color:var(--ink);background:transparent;border:1px solid var(--line-strong);border-radius:6px;padding:7px 30px 7px 12px;cursor:pointer;max-width:150px}
.lang:after{content:"";position:absolute;right:12px;top:50%;width:6px;height:6px;border-right:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink);transform:translateY(-70%) rotate(45deg);pointer-events:none}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;font-size:16px;line-height:1.5;border-radius:6px;padding:8px 16px;cursor:pointer;text-decoration:none;border:0;transition:opacity .15s,box-shadow .15s;white-space:nowrap}
.btn:active{opacity:.8}
.btn-dark{background:var(--ink);color:#fcfbf8;box-shadow:var(--inset)}
.btn-dark:hover{box-shadow:var(--inset),var(--focus)}
.btn-dark:disabled{opacity:.55;cursor:default}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line-strong)}
.btn-ghost:hover{background:var(--tint)}
.btn-lg{font-size:17px;padding:12px 22px}
.btn-sm{font-size:14px;padding:6px 12px}
.btn svg{width:18px;height:18px;flex:none}

/* hero */
.hero{position:relative;overflow:hidden;padding:104px 20px 72px;text-align:center}
.hero:before{content:"";position:absolute;inset:-20% -10% auto;height:120%;z-index:-1;pointer-events:none;
  background:radial-gradient(40% 50% at 22% 38%,rgba(255,143,171,.38),transparent 70%),radial-gradient(38% 46% at 78% 30%,rgba(157,184,255,.42),transparent 70%),radial-gradient(42% 46% at 52% 72%,rgba(255,190,138,.34),transparent 72%);filter:blur(36px)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-82);background:rgba(252,251,248,.7);border:1px solid var(--line);border-radius:9999px;padding:4px 14px 4px 6px;margin-bottom:28px}
.eyebrow span{background:var(--ink);color:#fcfbf8;border-radius:9999px;padding:1px 9px;font-size:12px}
.hero h1{font-size:clamp(38px,6.4vw,64px);line-height:1.04;font-weight:600;letter-spacing:-.035em;margin:0 auto 22px;max-width:15ch;text-wrap:balance}
.hero .lead{font-size:clamp(17px,2vw,19px);line-height:1.5;color:var(--muted);max-width:620px;margin:0 auto;text-wrap:pretty}
.cta{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:36px}
.cta-note{margin-top:14px;font-size:14px;color:var(--muted)}
#dlStatus{min-height:1.6em;margin-top:6px;font-size:14px;color:var(--ink-82)}
.show{max-width:820px;margin:56px auto 0;padding:8px;background:rgba(252,251,248,.75);border:1px solid var(--line);border-radius:16px}
.show img{display:block;width:100%;height:auto;border-radius:10px}
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;max-width:820px;margin:12px auto 0;text-align:left}
.flow div{background:rgba(252,251,248,.75);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.flow b{display:block;font-size:13px;color:var(--muted);font-weight:500;margin-bottom:2px}
.flow p{margin:0;font-size:15px;line-height:1.45}

/* layout */
.wrap{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:232px minmax(0,1fr);gap:56px}
.toc{position:sticky;top:84px;align-self:start;max-height:calc(100vh - 100px);overflow:auto;padding:4px 0 24px}
.toc p{font-size:13px;color:var(--muted);margin:0 0 10px 10px}
.toc a{display:flex;gap:10px;align-items:baseline;text-decoration:none;color:var(--muted);font-size:14px;line-height:1.35;padding:7px 10px;border-radius:6px}
.toc a i{font-style:normal;font-variant-numeric:tabular-nums;font-size:12px;color:rgba(28,28,28,.4);min-width:1.4em}
.toc a:hover{background:var(--tint);color:var(--ink)}
.toc a.on{background:var(--tint);color:var(--ink);font-weight:500}
.toc a.on i{color:var(--ink)}
main{min-width:0;max-width:780px;padding-bottom:40px}
.mnav{display:none}

/* sections */
section{padding:72px 0 8px;scroll-margin-top:68px}
section+section{border-top:1px solid var(--line)}
.kicker{display:flex;align-items:center;gap:10px;margin-bottom:12px;font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}
.kicker .num{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:9999px;background:var(--paper);border:1px solid var(--line);color:var(--ink);font-weight:600;font-size:14px;font-variant-numeric:tabular-nums}
.kicker .opt{border:1px solid var(--line-strong);border-radius:9999px;padding:0 10px;font-size:12px;line-height:22px}
h2{font-size:clamp(28px,3.6vw,38px);line-height:1.12;font-weight:600;letter-spacing:-.03em;margin:0 0 16px;text-wrap:balance}
h3{font-size:20px;line-height:1.3;font-weight:600;letter-spacing:-.01em;margin:36px 0 10px}
section p{margin:0 0 16px;color:var(--ink-82);font-size:17px;line-height:1.65}
ol,ul{margin:0 0 18px;padding:0}
ol{counter-reset:li;list-style:none}
ol li{counter-increment:li;position:relative;padding:12px 0 12px 44px;border-bottom:1px solid var(--line);color:var(--ink-82);font-size:17px;line-height:1.6}
ol li:last-child{border-bottom:0}
ol li:before{content:counter(li);position:absolute;left:0;top:12px;width:28px;height:28px;border-radius:9999px;border:1px solid var(--line-strong);display:grid;place-items:center;font-size:13px;font-weight:600;color:var(--ink);line-height:1}
figure{margin:22px 0;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:8px;overflow:hidden}
figure a.zoom{display:block;cursor:zoom-in;border-radius:8px;overflow:hidden;background:#1e1e22}
figure img{display:block;width:100%;height:auto}
figure.narrow a.zoom{max-width:794px;margin:0 auto}
figcaption{padding:12px 8px 6px;font-size:15px;line-height:1.6;color:var(--ink-82)}
.note{border-radius:12px;padding:16px 18px 16px 18px;margin:20px 0;font-size:16px;line-height:1.6;color:var(--ink-82);border:1px solid var(--line);background:var(--paper)}
.note .lbl{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.02em;border-radius:9999px;padding:1px 9px;margin-right:8px;vertical-align:1px;background:var(--ink);color:#fcfbf8}
.note.warn{background:#fdf1ed;border-color:#f3d9cf}
.note.warn .lbl{background:#c2412d}
.links{display:flex;flex-wrap:wrap;gap:10px;margin:8px 0 18px}
.ill{background:#2a2a2d;color:#d9d9d9;border-radius:10px;padding:14px;font:14px/1.4 ui-sans-serif,system-ui,"Segoe UI",sans-serif;margin:20px 0;overflow-x:auto}
.ill .r{display:flex;gap:6px;align-items:flex-start;flex-wrap:wrap}
.ill .b span{display:inline-block;padding:3px 9px}
.ill .hl{background:#3d6fd8;color:#fff;border-radius:4px}
.ill .dd{display:inline-block;background:#363639;border:1px solid #4d4d52;border-radius:6px;padding:4px}
.ill .dd div{padding:4px 14px}

/* assets */
.assets{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:22px 0}
.asset{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:16px 18px;display:flex;flex-direction:column;gap:6px}
.asset .top{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.tag{font-size:12px;border-radius:9999px;padding:0 9px;line-height:22px;border:1px solid var(--line-strong);color:var(--ink)}
.tag.req{background:var(--ink);border-color:var(--ink);color:#fcfbf8}
.asset h4{margin:0;font-size:17px;font-weight:600;letter-spacing:-.01em}
.asset .file{font-size:14px;color:var(--ink-82)}
.asset .rule{font-size:14px;color:var(--muted);line-height:1.5}
.group-t{font-size:14px;color:var(--muted);margin:26px 0 -10px}

/* help */
.faq{border:1px solid var(--line);border-radius:12px;background:var(--paper);overflow:hidden;margin:20px 0}
.faq div{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;padding:14px 18px;border-top:1px solid var(--line);font-size:15px;line-height:1.55}
.faq div:first-child{border-top:0;background:var(--tint-3);font-size:13px;color:var(--muted);padding-top:10px;padding-bottom:10px}
.faq code{background:transparent;border:0;padding:0;font-size:13.5px;color:var(--ink)}
.faq span{color:var(--ink-82)}

/* footer */
footer{max-width:1200px;margin:56px auto 24px;padding:0 20px}
.foot{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:16px;padding:56px 28px;text-align:center;background:var(--paper)}
.foot:before{content:"";position:absolute;inset:auto -10% -60% -10%;height:120%;background:radial-gradient(40% 60% at 30% 60%,rgba(255,143,171,.25),transparent 70%),radial-gradient(40% 60% at 70% 60%,rgba(157,184,255,.28),transparent 70%);filter:blur(30px);pointer-events:none}
.foot>*{position:relative}
.foot h2{margin-bottom:10px}
.foot p{color:var(--muted);margin:0 0 26px}
.fine{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:14px;color:var(--muted);padding:20px 4px 0}
.fine nav{display:flex;flex-wrap:wrap;gap:4px 14px}
.fine a{color:var(--muted)}
.ucl{display:flex;align-items:center;gap:14px;margin-top:18px;padding:16px 4px 0;border-top:1px solid var(--line);font-size:13px;line-height:1.55;color:var(--muted)}
.ucl img{flex:none;width:70px;height:auto}
.ucl p{margin:0}
.ucl a{color:var(--muted);text-decoration:underline}

/* language chooser */
.chooser{max-width:860px;margin:0 auto;padding:0 20px 80px}
.langs{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:10px}
.langs a{display:flex;justify-content:space-between;align-items:center;text-decoration:none;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:16px 18px;font-size:17px}
.langs a:hover{border-color:var(--line-strong)}
.langs a span{font-size:13px;color:var(--muted)}

:lang(ja) .hero h1,:lang(zh) .hero h1,:lang(ko) .hero h1{letter-spacing:-.02em}
:lang(ja) h2,:lang(zh) h2{letter-spacing:-.01em}
:lang(ja) section p,:lang(zh) section p,:lang(ja) ol li,:lang(zh) ol li{line-break:strict}
:lang(ko) section p,:lang(ko) ol li,:lang(ko) figcaption,:lang(ko) .hero .lead{word-break:keep-all;overflow-wrap:anywhere}

@media (max-width:1023px){
  .wrap{display:block}
  .toc{display:none}
  main{max-width:none}
  .mnav{display:flex;position:sticky;top:60px;z-index:15;gap:6px;overflow-x:auto;padding:10px 20px;margin:0 -20px;background:rgba(247,244,237,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);scrollbar-width:none}
  .mnav::-webkit-scrollbar{display:none}
  .mnav a{flex:none;text-decoration:none;font-size:14px;color:var(--ink-82);border:1px solid var(--line);background:var(--paper);border-radius:9999px;padding:4px 12px}
  .mnav a.on{background:var(--ink);color:#fcfbf8;border-color:var(--ink)}
  section{scroll-margin-top:116px}
}
@media (max-width:720px){
  .hero{padding:72px 18px 48px}
  .eyebrow{font-size:13px;border-radius:16px;max-width:100%;text-align:left;line-height:1.35;padding:5px 12px 5px 6px}
  .eyebrow span{flex:none}
  .flow{grid-template-columns:1fr}
  .assets{grid-template-columns:1fr}
  .faq div{grid-template-columns:1fr;gap:4px}
  .faq div:first-child{display:none}
  .brand small{display:none}
  .bar .btn-sm{display:none}
  section{padding-top:56px}
  section p,ol li{font-size:16px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}