:root{
  --teal:#55c4c6;--teal-dark:#137c80;--teal-deep:#08676d;--teal-soft:#e8f8f7;
  --ink:#1d3038;--muted:#71828c;--muted2:#95a3ab;--line:#e6ecee;
  --bg:#f5f8f8;--white:#fff;--warn:#a97325;--warn-bg:#fff5e5;--danger:#af4d4d;
  --shadow:0 4px 22px rgba(19,52,59,.045);--radius:18px
}
*{box-sizing:border-box}
html{font-family:system-ui,-apple-system,"PingFang TC","Microsoft JhengHei","Noto Sans TC",sans-serif;color:var(--ink);-webkit-text-size-adjust:100%}
body{margin:0;background:#e9f0f1;font-size:14px;line-height:1.5}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
button:disabled{opacity:.42;cursor:not-allowed}
button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #a7e3df;outline-offset:2px}
svg.ico{width:17px;height:17px;flex:none;display:inline-block;vertical-align:-3px;stroke:currentColor;stroke-width:1.9;fill:none;stroke-linecap:round;stroke-linejoin:round}
#icon-library{position:absolute;width:0;height:0;overflow:hidden}
/* The gray review toolbar exists only in this offline preview; not a production navigation item. */
.review-bar{position:sticky;top:0;z-index:100;background:#14282e;color:white;padding:11px 18px;border-bottom:1px solid #35474b}
.review-inner{max-width:1110px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.review-left{display:flex;gap:9px;align-items:center;font-size:13px}
.review-dot{width:8px;height:8px;border-radius:50%;background:#66d0c7}
.review-left span:last-child{color:#b4c7cd;font-size:12px}
.review-actions{display:flex;align-items:center;gap:8px}
.review-group{display:flex;gap:3px;padding:3px;border:1px solid #426069;border-radius:10px}
.review-btn{border:0;background:transparent;color:#cbd9dc;font-size:12px;padding:7px 11px;border-radius:7px;white-space:nowrap}
.review-btn.active{background:#f9ffff;color:#193d43;font-weight:750}
.review-hint{color:#bed0d4;font-size:12px}
#surface{min-height:calc(100vh - 60px);max-width:1140px;margin:auto;background:var(--bg);transition:max-width .24s,margin .24s,border-radius .24s}
#surface.mobile-frame{max-width:430px;min-height:780px;margin:28px auto;border:1px solid #d8e1e2;border-radius:26px;box-shadow:0 18px 65px #1731392e;overflow:hidden}
#surface.mobile-frame .app-width{max-width:none}
#surface.mobile-frame .desktop-only{display:none!important}
#surface.mobile-frame .admin-stats{grid-template-columns:repeat(2,1fr)}
#surface.mobile-frame .admin-table{min-width:0}
#surface.mobile-frame .table-head{display:none}
#surface.mobile-frame .table-row{display:grid;grid-template-columns:1fr;gap:9px}
#surface.mobile-frame .table-actions{justify-content:start}
#surface.mobile-frame .two-col{grid-template-columns:1fr}
.app-width{max-width:960px;margin:auto;padding:0 22px 72px}
.app-top{background:white;border-bottom:1px solid var(--line)}
.app-top-inner{max-width:960px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:21px 22px;gap:15px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{width:40px;height:40px;border-radius:13px;background:var(--teal);display:grid;place-items:center;color:#fff;flex:none;box-shadow:0 4px 12px #55c4c638}
.brand-mark .ico{width:23px;height:23px;stroke-width:2.3}
.brand-name{font-size:20px;font-weight:850;letter-spacing:.025em;line-height:1.3}
.brand-sub{color:var(--muted);font-size:12px;margin-top:3px}
.header-pill{font-size:12px;border:1px solid #d7e8e8;background:#f3fbfa;color:var(--teal-deep);padding:6px 10px;border-radius:999px;white-space:nowrap;font-weight:650}
.front-intro{padding:29px 0 16px;display:flex;justify-content:space-between;gap:20px;align-items:end}
.eyebrow{color:var(--teal-dark);font-size:12px;font-weight:750;letter-spacing:.09em;text-transform:uppercase}
h1,h2,h3,p{margin-top:0}
h1{font-size:25px;letter-spacing:-.025em;line-height:1.3;margin:6px 0 7px;font-weight:850}
.section-title{font-size:17px;font-weight:820;margin:0}
.subtitle{color:var(--muted);margin:0;font-size:13px;line-height:1.7}
.intro-stats{display:flex;align-items:center;gap:17px;flex:none}
.stat-number{font-size:23px;font-weight:850;line-height:1.1;letter-spacing:-.05em}
.stat-caption{font-size:11px;color:var(--muted);margin-top:3px}
.section-card{background:white;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.date-card{padding:19px 20px 14px;margin:13px 0 20px}
.card-topline{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}
.card-topline .text{font-size:13px;font-weight:800}
.card-topline .muted{font-size:12px;color:var(--muted)}
.date-scroll{display:flex;gap:9px;overflow-x:auto;padding:2px 1px 5px;scrollbar-width:thin}
.date-item{min-width:116px;border:1px solid #dfe8e8;background:white;color:var(--ink);border-radius:12px;text-align:left;padding:11px 13px;flex:none;transition:.15s}
.date-item.active{background:var(--teal-deep);color:white;border-color:var(--teal-deep);box-shadow:0 4px 10px #127c8030}
.date-item .date-main{display:block;font-weight:800;font-size:14px}
.date-item .date-extra{display:block;font-size:11px;margin-top:2px;opacity:.72}
.date-item.active .date-extra{opacity:.82}
.history-toggle{border:0;background:none;color:var(--teal-deep);font-size:12px;font-weight:700;padding:10px 0 0;display:flex;align-items:center;gap:6px}
.history-box{margin-top:10px;padding-top:11px;border-top:1px solid var(--line)}
.history-note{font-size:12px;color:var(--muted);margin-bottom:10px}
.day-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:22px 0 12px}
.day-heading h2{font-size:18px;margin:0;font-weight:840}
.day-heading p{color:var(--muted);font-size:12px;margin:3px 0 0}
.date-status{font-size:11px;font-weight:750;padding:6px 10px;border-radius:999px;background:#e9f8f6;color:var(--teal-deep);white-space:nowrap}
.date-status.past{background:#edf0f2;color:#6f7d85}
.filters{display:flex;gap:7px;overflow:auto;padding-bottom:11px;margin-bottom:0;scrollbar-width:none}
.filters::-webkit-scrollbar{display:none}
.filter-pill{border:1px solid transparent;background:transparent;color:#667780;border-radius:9px;padding:7px 12px;white-space:nowrap;font-size:12px;font-weight:650}
.filter-pill.active{background:white;border-color:#d9e8e8;color:var(--teal-deep);box-shadow:0 2px 8px #182e3208}
.event-list{display:flex;flex-direction:column;gap:10px}
.event-card{background:white;border:1px solid var(--line);border-radius:15px;overflow:hidden;box-shadow:var(--shadow);transition:border-color .15s}
.event-card.expanded{border-color:#b8dbda}
.event-sum{width:100%;padding:17px 18px;display:flex;gap:13px;align-items:center;background:none;border:0;text-align:left;color:inherit}
.event-icon{width:40px;height:40px;border-radius:12px;background:#eaf6f5;color:var(--teal-dark);display:grid;place-items:center;flex:none}
.event-icon .ico{width:21px;height:21px}
.event-info{min-width:0;flex:1}
.event-title{font-size:15px;font-weight:800;line-height:1.4;margin-bottom:4px}
.event-meta{display:flex;gap:7px 11px;flex-wrap:wrap;color:#718189;font-size:12px;line-height:1.6}
.event-meta span{display:inline-flex;align-items:center;gap:3px;min-width:0}
.event-meta .ico{height:13px;width:13px}
.event-meta .location{overflow:hidden;max-width:100%;text-overflow:ellipsis;white-space:nowrap}
.event-end{display:flex;align-items:center;gap:12px;flex:none}
.count-bubble{display:flex;flex-direction:column;align-items:center;min-width:43px}
.count-bubble b{font-size:18px;color:var(--teal-deep);font-weight:850;line-height:1.2}
.count-bubble small{font-size:10px;color:var(--muted)}
.chevron{width:21px;height:21px;color:#9aabb2;transition:transform .16s}
.event-card.expanded .chevron{transform:rotate(180deg)}
.event-body{padding:0 19px 18px 71px;border-top:1px solid #eff3f3}
.event-detailinfo{display:flex;flex-direction:column;gap:8px;padding:15px 0;color:#586c76;font-size:12px}
.event-detailinfo .detail-line{display:flex;gap:8px;align-items:start}
.event-detailinfo .ico{width:15px;height:15px;color:#7b999d;margin-top:1px}
.section-divider{height:1px;background:var(--line);margin:0 0 16px}
.roster-head{display:flex;justify-content:space-between;align-items:center;gap:8px;margin:0 0 8px;font-weight:800;font-size:13px}
.roster-head .small{font-size:11px;color:var(--muted);font-weight:500}
.person{display:flex;align-items:center;gap:9px;padding:10px 0;border-bottom:1px solid #f0f3f4;min-height:42px}
.person-index{font-size:12px;width:19px;color:#94a4ad;text-align:center;flex:none}
.person-body{flex:1;min-width:0}
.person-name{font-weight:650;font-size:13px;word-break:break-word}
.person-note{color:#73838b;font-size:11px;margin-top:2px;line-height:1.5}
.you-label{color:var(--teal-deep);background:#e6f7f4;border-radius:5px;font-size:10px;font-weight:750;padding:3px 6px;white-space:nowrap}
.text-btn{color:var(--teal-dark);font-size:11px;border:0;background:none;font-weight:750;padding:6px 3px}
.empty-roster{padding:16px;text-align:center;background:#f7f9fa;color:#8898a0;font-size:12px;border-radius:10px}
.join-action{padding-top:15px}
.btn{border:1px solid transparent;background:var(--teal-deep);border-radius:10px;color:white;padding:10px 16px;font-weight:750;display:inline-flex;justify-content:center;align-items:center;gap:7px;min-height:41px;line-height:1.25}
.btn:hover{filter:brightness(.97)}
.btn .ico{width:15px;height:15px}
.btn-primary{background:var(--teal-deep);border-color:var(--teal-deep)}
.btn-light{background:white;color:var(--teal-deep);border-color:#bfdbd8}
.btn-subtle{background:#f0f5f5;color:#45686b;border-color:#e8eeee}
.btn-danger{background:white;color:#af4d4d;border-color:#f0d4d4}
.btn-full{width:100%}
.form-wrap{margin-top:14px;padding:16px;border:1px solid #d1eae6;border-radius:13px;background:#f7fcfb}
.form-title{font-size:14px;font-weight:800;margin:0 0 12px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}
.field label{color:#4d626d;font-weight:700;font-size:12px}
.field input,.field select,.field textarea{width:100%;border:1px solid #d9e5e7;border-radius:9px;padding:10px 11px;background:#fff;color:var(--ink);min-height:41px;outline:none}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px #55c4c61a}
.field input::placeholder,.field textarea::placeholder{color:#a3b0b7}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-help{color:#829299;font-size:11px;line-height:1.6;margin:-2px 0 11px}
.form-actions{display:flex;gap:8px;flex-wrap:wrap}
.locked-info{margin:13px 0 0;padding:12px 13px;border-radius:10px;background:#f2f4f5;color:#697a82;font-size:12px;display:flex;align-items:center;gap:8px}
.locked-info .ico{width:15px;height:15px}
.alert-note{color:#70838b;font-size:12px;margin:12px 0}
.footer{font-size:11px;color:#8a9da3;text-align:center;padding:27px 8px 15px;line-height:1.8}
/* Admin */
.admin-intro{padding:27px 0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.admin-intro h1{margin:5px 0 4px}
.admin-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:2px 0 23px}
.admin-stat{background:white;border:1px solid var(--line);border-radius:14px;padding:16px 17px}
.admin-stat strong{font-size:23px;line-height:1.2;display:block;font-weight:850}
.admin-stat span{color:var(--muted);font-size:12px;display:block;margin-top:5px}
.admin-card{background:white;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:16px;padding:18px;margin-bottom:16px}
.admin-sectionhead{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:17px;flex-wrap:wrap}
.admin-sectionhead h2{font-size:16px;margin:0}
.admin-sectionhead p{font-size:12px;color:var(--muted);margin:4px 0 0}
.admin-toolbar{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin-bottom:16px}
.admin-toolbar .search{flex:1;min-width:170px;max-width:320px;border:1px solid #dbe7e7;border-radius:9px;padding:10px 12px;min-height:41px}
.admin-toolbar select{border:1px solid #dbe7e7;border-radius:9px;padding:10px;min-height:41px;background:#fff;color:#47616b}
.admin-table{border:1px solid var(--line);border-radius:12px;overflow:hidden}
.table-head,.table-row{display:grid;grid-template-columns:120px 1.6fr .7fr 110px 150px;align-items:center;gap:12px;padding:12px 15px}
.table-head{background:#f5f9f9;color:#74878e;font-size:11px;font-weight:750}
.table-row{border-top:1px solid var(--line);font-size:12px;min-height:69px}
.table-name{font-weight:800;font-size:13px;display:block}
.table-place{font-size:11px;color:var(--muted);margin-top:4px}
.table-date{font-weight:700;color:#597078}
.table-actions{display:flex;gap:6px;justify-content:end}
.mini-btn{border:1px solid #d6e7e6;color:var(--teal-dark);background:white;border-radius:8px;padding:6px 9px;font-size:11px;font-weight:700;white-space:nowrap}
.mini-btn:hover{background:#e9f8f7}
.state-tag{border-radius:7px;padding:5px 8px;font-size:11px;font-weight:750;background:#e5f6f2;color:#157c74;display:inline-block;white-space:nowrap}
.state-tag.old{background:#f0f2f3;color:#738087}
.state-tag.off{background:#fff3e3;color:#a76b27}
.admin-quickguide{padding:14px 16px;color:#667b83;font-size:12px;background:#ecf6f5;border-radius:12px;line-height:1.75}
.admin-quickguide strong{color:#33595b}
.admin-tools{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
/* modal */
.modal-backdrop{position:fixed;inset:0;background:#1228308a;z-index:300;display:flex;align-items:center;justify-content:center;padding:18px}
.modal{width:min(590px,100%);max-height:min(780px,92dvh);overflow:auto;background:#fff;border-radius:18px;box-shadow:0 22px 72px #061b224d;padding:22px}
.modal-header{display:flex;align-items:start;justify-content:space-between;gap:10px;margin-bottom:17px}
.modal-header h2{font-size:19px;margin:0}
.modal-header p{color:var(--muted);font-size:12px;margin:5px 0 0}
.icon-button{display:grid;place-items:center;background:#f2f6f6;color:#566f75;border:0;width:32px;height:32px;border-radius:8px}
.notice{font-size:12px;background:#f4f9f9;padding:12px;border-radius:9px;color:#5c7379;margin-top:10px}
.toast{position:fixed;z-index:500;bottom:24px;left:50%;transform:translateX(-50%);background:#173a3e;color:#fff;border-radius:11px;padding:12px 17px;box-shadow:0 8px 24px #14262a40;font-size:13px;max-width:90vw;text-align:center}
.hidden{display:none!important}
@media(max-width:780px){.app-width{padding:0 16px 50px}.app-top-inner{padding:17px 16px}.front-intro{padding-top:25px}.table-head{display:none}.table-row{grid-template-columns:1fr 1fr;gap:8px}.table-row>*:nth-child(2){grid-column:2}.table-actions{justify-content:start}.admin-stats{grid-template-columns:repeat(2,1fr)}.admin-toolbar .search{max-width:none}.admin-intro{align-items:start}}
@media(max-width:540px){.review-bar{padding:9px 11px}.review-inner{gap:7px}.review-left{width:100%;justify-content:center}.review-left span:last-child{display:none}.review-actions{width:100%;justify-content:center}.review-btn{padding:7px 10px}.review-hint{display:none}.app-top-inner{padding:17px 15px}.brand-name{font-size:18px}.brand-sub{font-size:11px}.header-pill{font-size:10px;padding:5px 8px}.app-width{padding:0 14px 45px}.front-intro{padding:23px 2px 10px}.front-intro h1{font-size:23px}.intro-stats{gap:11px}.intro-stats .stat-number{font-size:20px}.intro-stats .stat-caption{font-size:10px}.date-card{margin:11px 0 16px;padding:15px 14px 12px}.date-item{min-width:106px;padding:9px 11px}.event-sum{padding:15px 12px;gap:9px}.event-icon{width:36px;height:36px;border-radius:10px}.event-title{font-size:14px}.event-meta{font-size:11px;gap:3px 6px}.count-bubble{min-width:34px}.count-bubble b{font-size:16px}.event-end{gap:3px}.event-body{padding:0 12px 14px 12px}.day-heading{margin-top:16px}.two-col{grid-template-columns:1fr}.form-wrap{padding:13px}.admin-stats{gap:9px}.admin-stat{padding:13px}.admin-stat strong{font-size:21px}.admin-card{padding:13px}.table-row{grid-template-columns:1fr;gap:5px;padding:13px}.table-row>*:nth-child(2){grid-column:auto}.table-actions{justify-content:start;margin-top:4px}.admin-intro{flex-direction:column}.admin-tools{gap:7px}.modal{padding:17px}}

/* Production adaptation: mirrors the previous standalone HTML preview. */
body{background:var(--bg);min-height:100vh}
#surface{max-width:none;min-height:100vh;background:var(--bg);transition:none}
.app-width{max-width:960px}
summary{list-style:none;cursor:pointer}
summary::-webkit-details-marker{display:none}
.event-card[open]{border-color:#b8dbda}
.event-card[open] .chevron{transform:rotate(180deg)}
.event-card > .event-body{padding-top:0}
.brand-mark .ico{width:23px;height:23px}
.category-name{font-size:11px;color:#718189}
.date-anchor{text-decoration:none;display:block}
.date-anchor:focus-visible{outline:3px solid #a7e3df;outline-offset:2px}
.history-box:not([open]) .history-days{display:none}
.history-box > summary{color:var(--teal-deep);font-size:12px;font-weight:750;display:flex;align-items:center;gap:6px;padding:7px 0}
.history-box > summary .ico{width:15px;height:15px}
.history-box[open] > summary .ico{transform:rotate(180deg)}
.help-details > summary{color:var(--teal-deep);font-size:12px;font-weight:700;padding:5px 0}
.help-details > p{background:#f4f9f9;color:#71828c;border-radius:9px;padding:12px;line-height:1.75;font-size:12px;margin:7px 0}
.day-subtitle{color:var(--muted);font-size:12px;margin:0}
.alert-message{border-radius:11px;padding:13px 16px;font-size:13px;margin:12px 0;background:#e8f8f7;color:#146e6d;overflow-wrap:anywhere}
.alert-message.danger{background:#fff1f1;color:#a04444}
.alert-message a{color:inherit;overflow-wrap:anywhere}
.roster-form-details{margin:7px 0 0 28px;border:1px solid #d1eae6;border-radius:10px;padding:0 10px 10px;background:#f7fcfb}
.roster-form-details>summary{color:var(--teal-dark);font-size:11px;font-weight:750;padding:9px 0}
.roster-form-details .form-wrap{border:0;background:transparent;margin:0;padding:0}
.form-actions button{max-width:100%}
.inline-form{display:inline-flex;margin:0}
.inline-form button{white-space:nowrap}
.roster-head{margin-top:5px}
.event-end .count-bubble small{white-space:nowrap}
.empty-state{padding:30px 18px;text-align:center;background:white;border:1px solid var(--line);border-radius:var(--radius);color:var(--muted);font-size:13px}
.history-tag{display:inline-block;background:#f0f2f3;color:#77858b;border-radius:8px;padding:5px 9px;font-size:11px}
.status-warning{background:#fff3e3;color:#a76b27}
.day-heading .date-status{margin-left:auto}
.filter-pill{text-decoration:none;display:inline-block}
.admin-page h1{margin:5px 0 4px}
.admin-page .admin-intro{align-items:center}
.admin-stats .admin-stat{min-width:0}
.admin-toolbar .search{min-width:180px}
.admin-toolbar select{max-width:220px;min-width:120px}
.table-row details{grid-column:1/-1}
.table-row .table-actions{justify-content:flex-start}
.admin-roster-summary{border-top:1px solid var(--line);padding:13px 0 4px;font-size:12px;color:var(--teal-deep);font-weight:750}
.admin-roster-details[open] .admin-roster-summary{border-bottom:1px solid var(--line)}
.admin-roster-details{width:100%;margin-top:2px}
.admin-signup-row{padding:13px 0;border-bottom:1px solid #eff3f3}
.admin-signup-row:last-child{border:0}
.admin-signup-row>summary{font-size:12px;font-weight:750;color:var(--ink);padding:0}
.admin-signup-row .form-wrap{margin-top:11px}
.admin-event-list{display:flex;flex-direction:column;gap:12px}
.admin-event-box{border:1px solid var(--line);border-radius:12px;background:#fff;padding:15px}
.admin-event-head{display:flex;align-items:flex-start;justify-content:space-between;gap:9px}
.admin-event-head .table-name{margin-bottom:3px}
.admin-event-actions{display:flex;gap:7px;flex-wrap:wrap;margin:12px 0 0}
.admin-event-actions .mini-btn{text-decoration:none}
.admin-section-details>summary{display:flex;align-items:center;justify-content:space-between;gap:9px;font-size:14px;font-weight:800}
.admin-section-details[open]>summary{margin-bottom:18px}
.admin-section-details>summary:after{content:'展開';color:var(--teal-dark);font-size:11px;font-weight:700}
.admin-section-details[open]>summary:after{content:'收合'}
.form-wrap .field input[type=checkbox]{width:auto;min-height:auto}
.check-row{display:flex;gap:16px;flex-wrap:wrap;align-items:center;margin-bottom:14px}
.check-row label{display:flex;align-items:center;gap:6px;font-size:12px;color:#4d626d}
.check-row input{accent-color:var(--teal-dark)}
.form-help code{background:#eaf3f3;border-radius:4px;padding:1px 4px}
.admin-empty{color:var(--muted);text-align:center;padding:28px 10px}
.login-panel{max-width:550px;margin:22px auto}
.footer a{color:inherit}
@media(max-width:540px){
 .front-intro{align-items:flex-end}
 .intro-stats{gap:10px}
 .day-heading{align-items:center}
 .event-body{padding:0 12px 14px}
 .admin-event-head{gap:8px}
 .admin-page .admin-intro{align-items:flex-start}
 .admin-toolbar .search{min-width:0;width:100%;max-width:none}
 .admin-toolbar select{flex:1}
}

.archive-form{margin-top:15px}
.footer-actions{margin-top:16px}
.with-margin{margin-top:20px}
.batch-example-text{white-space:pre-wrap;overflow-wrap:anywhere}