:root{--ink:#173c66;--text:#252b28;--muted:#5a605b;--paper:#f7f3ea;--white:#fffdf8;--line:#d7d3c9;--brown:#8a5a38}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:20px}
body{margin:0;background:var(--paper);color:var(--text);font:18px/1.65 -apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;word-break:keep-all;overflow-wrap:anywhere}
a{color:var(--ink);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}a:focus-visible,summary:focus-visible{outline:3px solid var(--brown);outline-offset:5px}
.wrap{width:calc(100% - 40px);max-width:1060px;margin:auto}
.skip{position:absolute;left:12px;top:-100px;background:white;padding:12px;z-index:10}.skip:focus{top:8px}
header .wrap{min-height:86px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:29px;letter-spacing:-1px}
.brand img{width:56px;height:56px;object-fit:contain}header nav a{display:inline-flex;align-items:center;min-height:44px;font-size:17px}
.hero{padding:36px 0 48px}.hero-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:60px;align-items:center}
.eyebrow{color:var(--brown);font-size:17px;font-weight:700;margin:0 0 12px}
h1{font-size:52px;line-height:1.18;letter-spacing:-2px;margin:0 0 20px}h1 span{color:var(--ink)}
.sub{margin:0 0 16px;font-size:20px}.free{font-size:16px;color:var(--muted);margin:0 0 20px}
.roles{display:grid;gap:10px}.role{display:flex;justify-content:space-between;align-items:center;gap:10px;min-height:56px;padding:12px 18px;border:1px solid #a5aaa2;border-radius:6px;color:var(--text);text-decoration:none;font-size:18px;font-weight:700;background:var(--white)}
.role.primary{background:var(--ink);color:white;border-color:var(--ink);min-height:66px}.role .action{white-space:nowrap;font-size:17px}.role small{display:block;font-weight:400;font-size:16px}.hint{font-size:16px;color:var(--muted);margin:12px 0 0}
figure{margin:0}.screen{max-width:380px;margin:auto;background:#edf1f5;border:8px solid #303737;border-radius:22px;overflow:hidden;box-shadow:8px 12px 0 #e6e1d5}
.screen img{display:block;width:100%;height:auto}figcaption{font-size:16px;color:var(--muted);text-align:center;margin-top:16px}
section:not(.hero){border-top:1px solid var(--line);padding:40px 0}h2{font-size:29px;line-height:1.35;letter-spacing:-.8px;margin:0 0 24px}h3{font-size:21px;margin:0 0 6px}
.usage{display:grid;grid-template-columns:1fr 1fr;gap:52px}.usage p{margin:0}.who{font-size:16px;color:var(--brown);font-weight:700;margin-bottom:8px!important}.usage .owner{border-left:3px solid var(--ink);padding-left:24px}
.note{margin:24px 0 0;color:var(--muted);font-size:16px}
.manual-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 0;border-bottom:1px solid var(--line);text-decoration:none;font-size:18px;min-height:60px}.manual-row span:last-child{font-size:17px;white-space:nowrap}
.faq details{border-bottom:1px solid var(--line)}summary{cursor:pointer;min-height:58px;padding:15px 0;font-size:18px;font-weight:700}details p{margin:0 0 20px;font-size:18px}
.more{display:inline-flex;align-items:center;min-height:48px;margin-top:12px;font-size:17px}
footer{background:#e9e6dc;border-top:1px solid var(--line);padding:30px 0;font-size:16px}footer p{margin:0 0 12px}.footer-links{display:flex;flex-wrap:wrap;gap:0 20px}.footer-links a{display:inline-flex;align-items:center;min-height:44px;font-size:17px}.copyright{margin-top:16px;color:var(--muted)}
@media(max-width:700px){header .wrap{min-height:70px}.brand{font-size:26px}.brand img{width:44px;height:44px}.hero{padding:18px 0 32px}.hero-grid{grid-template-columns:1fr;gap:30px}h1{font-size:38px;letter-spacing:-1.5px;margin-bottom:14px}.eyebrow{font-size:16px;margin-bottom:10px}.sub{font-size:18px;margin-bottom:10px}.free{margin-bottom:16px}.role{padding:11px 14px;font-size:17px}.role.primary{min-height:62px}.screen{max-width:280px;border-width:6px;border-radius:16px}figcaption{margin-top:12px}section:not(.hero){padding:30px 0}h2{font-size:26px;margin-bottom:20px}.usage{grid-template-columns:1fr;gap:22px}.usage .owner{padding-left:16px}.note{margin-top:18px}.manual-row{font-size:17px}.wrap{width:calc(100% - 36px)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}