:root{
  --bg:#F2F3F1; --card:#FFFFFF; --soft:#F7F8F6; --line:#DADDD8; --line2:#E8EAE6; --field:#C9CDC6;
  --ink:#17202B; --muted:#58616B; --accent:#1F5F8B; --accent-ink:#1F5F8B; --on-accent:#FFFFFF;
  --red:#C8322B; --amber:#B7700A; --green:#2E7D4F; --ok-bg:#E4F1E8; --ng-bg:#F8E3E1;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#12161B; --card:#1B2128; --soft:#20272F; --line:#303842; --line2:#262D35; --field:#3B4450;
    --ink:#E9ECEF; --muted:#A0A9B3; --accent:#3D7FB0; --accent-ink:#8FC0E6;
    --red:#EF6A60; --amber:#E7A94A; --green:#6CC08C; --ok-bg:#1D3326; --ng-bg:#3A2321;
  }
}
*,*::before,*::after{box-sizing:inherit}
[hidden]{display:none!important}
html{scroll-padding-top:env(safe-area-inset-top,0px);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Zen Kaku Gothic New","Hiragino Sans","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;line-height:1.6}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--accent-ink);outline-offset:2px}
.wrap{max-width:980px;margin:0 auto;padding:16px 20px 48px}
@media (min-width:700px){.wrap{padding:24px 40px 64px}}
.muted{color:var(--muted)}
.small{font-size:13px}
.nav{display:flex;justify-content:space-between;align-items:center;min-height:52px;margin-bottom:12px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700}
.logo{width:28px;height:28px;flex-shrink:0}
.back{display:inline-flex;align-items:center;gap:4px;min-height:44px;font-weight:500}
.who{display:flex;align-items:center;gap:6px;font-size:14px;margin:0}
.head{margin-bottom:24px}
h1{margin:0;font-size:28px;font-weight:900;letter-spacing:.02em;line-height:1.3}
@media (min-width:700px){h1{font-size:34px}}
.head p{margin:6px 0 0}
.flash{padding:12px 16px;border-radius:12px;background:var(--ok-bg);color:var(--green);font-weight:700;font-size:14px;margin:0 0 16px}
.flash.ng{background:var(--ng-bg);color:var(--red)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:52px;padding:0 22px;border-radius:12px;border:1px solid var(--field);background:var(--card);font-size:16px;font-weight:500;cursor:pointer}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent);font-weight:700}
.btn.block{width:100%}
.linkbtn{background:none;border:none;color:var(--accent-ink);font-weight:700;font-size:14px;min-height:40px;padding:0 8px;cursor:pointer}
.linkbtn.danger{color:var(--red)}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px}
@media (min-width:700px){.card{padding:24px}}
.card h2{margin:0 0 14px;font-size:16px;font-weight:700}
.stack{display:flex;flex-direction:column;gap:16px}
.inline{display:inline}
label.f{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:700}
.in{height:50px;padding:0 14px;border:1px solid var(--field);border-radius:10px;background:var(--card);font-size:16px;width:100%}
.hint{font-size:12px;color:var(--muted);font-weight:400}
.err{color:var(--red);font-size:14px;font-weight:700;margin:0}
.g2{display:grid;grid-template-columns:minmax(0,1fr);gap:14px}
@media (min-width:700px){.g2{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}}
.formbtns{display:flex;gap:10px;flex-wrap:wrap}
.menu{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.tile{display:flex;flex-direction:column;gap:6px;min-height:120px;padding:18px;border-radius:16px;background:var(--card);border:1px solid var(--line)}
.tile b{font-size:18px}
.tile small{font-size:13px;color:var(--muted)}
.tile.off{background:transparent;border-style:dashed;color:var(--muted)}
.pill{display:inline-block;padding:1px 10px;border-radius:10px;font-size:12px;font-weight:700;background:var(--soft);border:1px solid var(--line);color:var(--muted);align-self:flex-start}
.pill.on{background:var(--ok-bg);color:var(--green);border-color:transparent}
.pill.off{background:var(--ng-bg);color:var(--red);border-color:transparent}
.tablewrap{overflow-x:auto}
table.t{width:100%;border-collapse:collapse;font-size:14px}
table.t th,table.t td{padding:12px 10px;border-bottom:1px solid var(--line2);text-align:left;vertical-align:middle;white-space:nowrap}
table.t th{color:var(--muted);font-size:12px}
.login{max-width:420px;margin:32px auto 0}

/* 20分時計で追加 */
.brand{font-size:17px}
.foot{margin-top:40px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.share{display:grid;grid-template-columns:minmax(0,1fr) 168px;gap:20px;align-items:start}
@media (max-width:640px){.share{grid-template-columns:minmax(0,1fr)}}
.urlbox{display:flex;gap:8px;align-items:stretch}
.urlbox .in{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px;min-width:0}
.urlbox .btn{min-height:50px;flex-shrink:0;padding:0 16px}
.qr{width:168px;height:168px;background:#fff;border-radius:12px;padding:6px;border:1px solid var(--line)}
.qr svg{display:block;width:100%;height:100%}
.warn{padding:12px 16px;border-radius:12px;background:#FFF1D6;color:#6B4300;font-size:14px;font-weight:700;margin:0}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .warn{background:#3A2E17;color:#F2C572}}
.hero h1{font-size:32px}
@media (min-width:700px){.hero h1{font-size:40px}}
.feats{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin:0;padding:0;list-style:none}
.feats li{padding:14px 16px;border-radius:14px;background:var(--card);border:1px solid var(--line);font-size:14px}
.feats b{display:block;font-size:15px;margin-bottom:2px}
.mylist{display:flex;flex-direction:column;gap:8px;margin:0;padding:0;list-style:none}
.mylist li{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:10px 14px;border-radius:12px;background:var(--soft)}
.mylist a{font-weight:700;color:var(--accent-ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.danger-zone{border-color:var(--ng-bg)}
/* v1.1 設定のしかた（簡単／アドバンス） */
.modes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media (max-width:560px){.modes{grid-template-columns:minmax(0,1fr)}}
.mode{position:relative;display:flex}
.mode input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.mode > span{flex:1;display:flex;flex-direction:column;gap:4px;padding:14px 16px;border-radius:14px;border:2px solid var(--line);background:var(--card);font-size:13px;color:var(--muted);line-height:1.6}
.mode b{font-size:17px;color:var(--ink)}
.mode input:checked + span{border-color:var(--accent);background:var(--soft);box-shadow:inset 0 0 0 1px var(--accent)}
.mode input:checked + span b::before{content:"● ";color:var(--accent-ink)}
.mode input:not(:checked) + span b::before{content:"○ ";color:var(--muted)}
.mode input:focus-visible + span{outline:3px solid var(--accent-ink);outline-offset:2px}
.times{display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none}
.times li{font-size:13px;font-weight:700;padding:3px 10px;border-radius:8px;background:var(--soft);border:1px solid var(--line2);font-variant-numeric:tabular-nums}
.times li.end{background:transparent;border-style:dashed;color:var(--muted)}
.endprev{border-radius:16px;padding:20px 24px;background:#5B636C;color:#fff}
.endprev .t{font-size:30px;font-weight:900;line-height:1.25;overflow-wrap:anywhere}
.endprev .s{font-size:16px;font-weight:700;opacity:.92;margin-top:8px;overflow-wrap:anywhere}