:root{color-scheme:light dark;--bg:#f7f8f4;--card:#fff;--ink:#182f2a;--mute:#526660;--line:#d5dfd8;--acc:#0f6b5c;--acc-ink:#fff;--soft:#e7efE8;--warn:#825000;--warn-bg:#fff4e2}
@media(prefers-color-scheme:dark){:root{--bg:#101b18;--card:#172823;--ink:#edf3ed;--mute:#b0c3b9;--line:#354b42;--acc:#75d4b8;--acc-ink:#10251e;--soft:#203b31;--warn:#f0bd70;--warn-bg:#302819}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:24px}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR","Segoe UI",sans-serif;overflow-wrap:break-word}
html:lang(ko) body{word-break:keep-all}
html:lang(zh) body{line-break:strict;word-break:normal;overflow-wrap:normal}
a{color:var(--acc);text-underline-offset:4px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--acc);outline-offset:5px}
.wrap{max-width:992px;margin:auto;padding:0 16px}
html:lang(zh) body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Noto Sans SC",sans-serif}
html:lang(en) body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
.langs a:lang(ko){font-family:"Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR",sans-serif}
.langs a:lang(zh){font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
.skip{position:absolute;left:-9999px;top:8px;z-index:10;background:var(--acc);color:var(--acc-ink);padding:10px 14px;border-radius:8px;font-weight:600}
.skip:focus{left:16px}
header{padding:24px 0 0}
.top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 12px}
.brand{font-weight:750;font-size:23px;letter-spacing:-.04em;display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none}
.mark{width:32px;height:32px;border-radius:10px;background:var(--acc);position:relative;flex:none}
.mark:after{content:"";position:absolute;left:7px;right:7px;top:18px;height:3px;border-radius:50%;background:var(--acc-ink);box-shadow:0 -7px var(--acc-ink);transform:rotate(-12deg)}
.langs{display:flex;gap:2px;font-size:13px}
.langs a{display:flex;align-items:center;white-space:nowrap;min-height:44px;padding:4px 8px;border-radius:8px;text-decoration:none;color:var(--mute)}
.langs a[aria-current]{background:var(--soft);color:var(--ink);font-weight:650}
nav.toc{display:flex;flex-wrap:wrap;gap:0 24px;margin-top:20px;padding:8px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
nav.toc a{display:flex;align-items:center;min-height:44px;font-size:14px;font-weight:600;text-decoration:none;color:var(--ink)}
nav.toc a:hover{color:var(--acc)}
.hero{position:relative;display:grid;grid-template-columns:1.3fr 1fr;align-items:center;gap:24px;padding:48px 0 56px}
.hero-copy{position:relative;z-index:1}
.hero h1{font-size:clamp(36px,4.8vw,54px);line-height:1.17;margin:0 0 24px;letter-spacing:-.045em;text-wrap:balance}
.hero p{margin:0;color:var(--mute);font-size:17px;max-width:34em}
.hero p.eyebrow{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--acc);margin-bottom:20px}
.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--acc)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn{display:inline-flex;justify-content:center;align-items:center;gap:18px;min-height:46px;background:var(--acc);color:var(--acc-ink);text-decoration:none;font-weight:650;padding:10px 17px;border:1px solid var(--acc);border-radius:8px;font-size:14px;line-height:1.5}
.btn:hover{box-shadow:0 0 0 3px var(--soft)}
.btn.ghost{background:transparent;color:var(--acc)}
.hero-art{width:100%;height:auto;color:var(--acc)}
section{margin:0;padding:40px 0;scroll-margin-top:12px}
h2{font-size:27px;line-height:1.3;margin:0 0 26px;letter-spacing:-.035em}
h3{line-height:1.45}
#why{border-top:1px solid var(--line);padding-bottom:48px}
.benefits{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.benefit svg{width:34px;height:34px;color:var(--acc);margin-bottom:14px}
.benefit h3{font-size:17px;margin:0 0 10px;letter-spacing:-.02em}
.benefit p{font-size:14px;color:var(--mute);margin:0}
#download{border-top:1px solid var(--line)}
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.card{min-width:0;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}
.grid .card{display:flex;align-items:flex-start;flex-direction:column;border-top:3px solid var(--acc)}
.card h3{margin:0 0 6px;font-size:20px}
.meta{color:var(--mute);font-size:13px;margin:0 0 18px}
.grid .btn{width:100%}
details.sha{margin-top:auto;padding-top:16px;font-size:12px;color:var(--mute);width:100%}
details.sha summary{cursor:pointer;padding:12px 0;line-height:20px}
details.sha code{display:block;word-break:break-all;margin-top:6px;font-size:11px}
.note{font-size:13px;color:var(--mute);margin:14px 0 0}
ol.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;counter-reset:s}
ol.steps li{padding-top:18px;border-top:1px solid var(--line);counter-increment:s}
ol.steps li:before{content:"0" counter(s);display:block;color:var(--acc);font-size:28px;font-weight:400;line-height:1;margin-bottom:18px;font-variant-numeric:tabular-nums}
ol.steps b{display:block;font-size:18px;margin-bottom:5px}
ol.steps span{color:var(--mute);font-size:14px}
#help{border-top:1px solid var(--line);margin-top:16px}
details.q{border-bottom:1px solid var(--line);padding:0}
details.q summary{cursor:pointer;font-weight:600;padding:17px 8px 17px 0;min-height:44px}
details.q summary::marker{color:var(--acc)}
details.q p{margin:0 0 18px;color:var(--mute);max-width:760px}
#notice{padding-top:32px}
#notices{background:var(--soft);border-radius:12px;padding:18px 20px;font-size:14px}
#notices .item+.item{margin-top:12px}
#notices .item.warn{background:var(--warn-bg);padding:12px;border-radius:8px}
#notices .item.warn b{color:var(--warn)}
#notices .date{font-size:13px;color:var(--mute);margin-right:8px}
#support{padding-top:24px}
.sup{display:grid;gap:16px;padding:28px}
.sup p{margin:0}
.sup .row{display:flex;flex-wrap:wrap;gap:6px 18px;align-items:baseline}
.sup .k{color:var(--mute);font-size:14px;min-width:140px}
.sup .signup{border-top:1px solid var(--line);padding-top:20px;margin-top:4px}
.signup .k{color:var(--ink);font-weight:650}
footer{display:flex;flex-wrap:wrap;align-items:center;gap:6px 16px;border-top:1px solid var(--line);margin-top:28px;padding:24px 0 72px;color:var(--mute);font-size:13px}
footer .op a{color:inherit;text-underline-offset:3px}
footer svg{margin-left:auto}
footer svg{width:90px;height:20px;color:var(--acc)}
@media(max-width:760px){.hero{gap:8px;padding:48px 0}.hero h1{font-size:40px}.benefits,.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.benefits{gap:30px 24px}}
@media(max-width:540px){header{padding-top:16px}.hero{grid-template-columns:1fr;padding:36px 0 24px;gap:16px}.hero h1{font-size:39px;max-width:11em}.hero p{font-size:16px}.hero-art{height:170px}.actions{gap:10px;margin-top:24px}.actions .btn{font-size:13px;padding:11px 13px;gap:10px}nav.toc{gap:0 18px;margin-top:16px}nav.toc a{font-size:13px}section{padding:30px 0}h2{font-size:24px;margin-bottom:22px}.benefits{gap:26px 20px}.benefit h3{font-size:16px}.benefit p{font-size:14px}.grid{grid-template-columns:1fr}.grid .card{padding:20px}.grid .btn{width:auto;min-width:150px}ol.steps{grid-template-columns:1fr;gap:20px}ol.steps li{display:grid;grid-template-columns:40px 1fr;column-gap:14px}ol.steps li:before{grid-row:1/3;margin:0;font-size:25px}ol.steps span{grid-column:2}.sup{padding:20px}.sup .k{width:100%;min-width:0}.sup .row{gap:5px 16px}}
.need-sub{margin:-8px 0 22px;color:var(--mute);font-size:15px}.need-sub a{font-weight:600;white-space:nowrap}
.grid .card.mine{box-shadow:0 0 0 2px var(--acc)}
.mine-tag{display:inline-block;margin-left:8px;padding:1px 8px;border-radius:999px;background:var(--soft);color:var(--acc);font-size:12px;font-weight:650;vertical-align:middle}
.hero p{text-wrap:pretty}.benefit h3{text-wrap:balance}.benefit p,details.q p{text-wrap:pretty}
@media(max-width:540px){.grid .card.mine{order:-1}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}