:root{color-scheme:light;--ink:#233b38;--muted:#576c65;--accent:#146957;--border:#d5dfd4}
*{box-sizing:border-box}
body{margin:0;background:#f6f7ef;color:var(--ink);font-family:"Yu Gothic","Meiryo",sans-serif;line-height:1.8}
.header{border-bottom:1px solid var(--border);padding:22px max(24px,calc((100% - 1040px)/2))}
.brand{display:inline-flex;align-items:center;gap:16px;color:var(--ink);font-size:18px;font-weight:700;text-decoration:none}
.badge{font-size:11px;border:1px solid #a6b8a8;border-radius:5px;padding:1px 8px}
main{max-width:1040px;margin:auto;padding:56px 24px 32px}
.hero{max-width:760px}
.eyebrow{color:var(--accent);font-size:14px;font-weight:700;letter-spacing:.08em}
h1{font-size:clamp(34px,6vw,62px);line-height:1.35;letter-spacing:.02em;margin:20px 0 24px}
.intro{color:var(--muted);font-size:17px}
.notice{background:#e5ecdf;border-left:3px solid var(--accent);padding:16px 20px;margin:30px 0;font-size:14px}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
article{border-top:1px solid #abbfac;padding:24px 0}
.number{font-size:12px;color:var(--accent);font-weight:700}
h2{font-size:19px;margin:10px 0}
article p,.footnote,footer{font-size:13px;color:var(--muted)}
.footnote{margin-top:24px}
footer{max-width:1040px;margin:auto;padding:24px;border-top:1px solid var(--border)}
a:focus-visible{outline:3px solid var(--accent);outline-offset:5px}
@media(max-width:640px){main{padding-top:32px}.features{grid-template-columns:1fr;gap:0}.brand{font-size:16px;gap:10px}.intro{font-size:15px}}
.page-title{font-size:36px;margin-bottom:12px}
button,.button-link{background:var(--accent);border:1px solid var(--accent);border-radius:7px;color:white;font:inherit;font-weight:700;padding:10px 20px;cursor:pointer;text-decoration:none;display:inline-block}
button:hover,.button-link:hover{filter:brightness(.9)}
input,select{font:inherit;border:1px solid #9cad9e;border-radius:7px;background:white;color:var(--ink);padding:10px 12px;min-width:0}
input:focus-visible,select:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #94bdb2;outline-offset:3px}
.add-form{max-width:720px;margin:30px 0}.add-form label{font-weight:700}.input-row{display:flex;gap:12px;margin-top:8px}.input-row input{flex:1}.input-row button{white-space:nowrap}.add-form .footnote{margin:8px 0}
.list-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;margin:36px 0 12px}.count{font-size:13px;color:var(--muted);margin-left:8px}.sort-form{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:13px}.secondary{background:transparent;color:var(--accent)}
.tag-list{list-style:none;padding:0;margin:0}.tag-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:8px 0;border-top:1px solid var(--border)}.tag-info{display:flex;align-items:center;gap:16px;min-width:0;flex:1}.tag-name{font-weight:700;font-size:16px;overflow-wrap:anywhere;min-width:0}.tag-date{color:var(--muted);font-size:12px;margin-left:auto;white-space:nowrap;flex-shrink:0}
.delete-menu{flex-shrink:0;max-width:190px;font-size:13px}.delete-menu summary{cursor:pointer;color:#8d3833;padding:8px}.delete-menu form{padding:12px;background:#fff3ed;border-radius:6px}.delete-menu p{margin-top:0}.danger{background:#8d3833;border-color:#8d3833;font-size:13px;padding:6px 12px}
.success,.error{padding:12px 16px;border-radius:6px}.success{background:#ddecdf;color:#1b5735}.error{background:#fce4df;color:#8d2823}.empty{text-align:center;border:1px dashed #abbfac;border-radius:10px;padding:44px 16px;color:var(--muted)}
@media(max-width:480px){.input-row{flex-direction:column}.tag-row{gap:10px}.delete-menu{max-width:135px}.sort-form{gap:6px}.sort-form label{width:100%}}
a{color:var(--accent)}
.app-header{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}.app-header nav{display:flex;gap:18px;align-items:center;flex-wrap:wrap;font-size:13px}.app-header nav a{text-decoration:none}.app-header nav form{margin:0}.text-button{background:transparent;color:var(--muted);border:0;padding:0;font-size:13px;font-weight:400}
.account-main{max-width:640px}.account-form{display:flex;flex-direction:column;gap:10px;margin:26px 0}.account-form>label{font-weight:700;margin-top:8px}.account-form>button{margin-top:16px}.account-form .footnote{margin:0}.checkbox-label{display:flex;gap:10px;align-items:center}.checkbox-label input{width:18px;height:18px;accent-color:var(--accent)}.form-actions{display:flex;gap:20px;align-items:center;flex-wrap:wrap}.account-details dt{font-size:13px;color:var(--muted)}.account-details dd{margin:0 0 16px;overflow-wrap:anywhere}
.tag-actions{display:flex;gap:12px;align-items:center;flex-shrink:0}.edit-link{font-size:13px;text-decoration:none;padding:5px 10px;border:1px solid var(--border);border-radius:5px}.public-id{display:block;font-size:12px;color:var(--muted);overflow-wrap:anywhere}.user-link{text-decoration:none}.pagination{display:flex;justify-content:space-between;margin:22px 0}
@media(max-width:640px){.app-header nav{gap:12px}.tag-info{gap:8px}.tag-actions{gap:4px}.tag-date{font-size:11px}}
.tag-info{flex-wrap:wrap;gap:4px 12px}.tag-name{flex:1}.tag-date{margin-left:0}.tag-actions form{margin:0}.search-button{font-size:12px;padding:5px 10px;white-space:nowrap}
@media(max-width:800px){.tag-row{flex-wrap:wrap;gap:4px 12px}.tag-info{flex-basis:100%}.tag-actions{margin-left:auto}.tag-name{flex-basis:30%}}
.favorite-actions{margin:20px 0}.tag-row>.user-link{min-width:0;overflow-wrap:anywhere;flex:1}.tag-row>form{margin:0}