:root{
  --green:#8bc34a; --green-d:#4a7a1f; --sky:#4fc3f7; --sky-d:#01579b; --gold:#d4af37; --gold-d:#7a5f00;
  --ink:#1f2937; --text:#374151; --mute:#4b5563; --line:#e5e7eb; --bg:#f9fafb; --tint:#f1f8e9;
  --warn:#b91c1c;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:"Noto Sans JP","Hiragino Sans","Yu Gothic UI","Meiryo UI",sans-serif;line-height:1.75;
  word-break:keep-all;overflow-wrap:anywhere;line-break:strict}
h1,h2{color:var(--ink);line-height:1.4;margin:0}
.bar{height:6px;background:linear-gradient(90deg,var(--sky) 50%,var(--green) 50%)}
.eyebrow{margin:0 0 .25rem;font-size:.75rem;letter-spacing:.14em;color:var(--gold-d);font-weight:700}
.lead{margin:.5rem 0 1rem;color:var(--mute)}
.note{font-size:.8125rem;color:var(--mute)}
code{background:var(--tint);padding:.1em .4em;border-radius:4px;white-space:nowrap}
.keys{display:inline-block;line-height:2.1}
.logo{height:34px;width:auto;max-width:100%;display:block}
.alert{background:#fef2f2;border:1px solid #fecaca;color:var(--warn);padding:.6rem .8rem;border-radius:8px;font-size:.875rem;margin:.75rem 0}
.ok{background:var(--tint);border:1px solid #c5e1a5;color:#33691e;padding:.6rem .8rem;border-radius:8px;font-size:.875rem;margin:.75rem 0}
.alert-lock{background:#fff7ed;border-color:#fed7aa;color:#9a3412}

/* ---- 認証画面 ---- */
.auth-wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,480px);min-height:calc(100vh - 6px)}
.auth-art{background:url(login.jpg) center/cover no-repeat}
.auth-card{padding:clamp(1.5rem,5vw,3.5rem);display:flex;flex-direction:column;justify-content:center;background:#fff}
.auth-card h1{font-size:1.5rem;margin-bottom:.5rem}
.auth-card .logo{margin-bottom:1.5rem;align-self:flex-start}
form{margin:0}
label{display:block;font-size:.875rem;font-weight:700;color:var(--ink);margin:1rem 0 .25rem}
input{width:100%;padding:.7rem .8rem;font:inherit;border:1px solid #9ca3af;border-radius:8px;background:#fff;color:var(--ink)}
input:focus{outline:3px solid var(--sky);outline-offset:1px;border-color:var(--sky-d)}
input.code{font-size:1.5rem;letter-spacing:.3em;text-align:center}
.btn{display:inline-block;width:100%;margin-top:1.25rem;padding:.8rem 1rem;border:0;border-radius:8px;
  background:var(--green-d);color:#fff;font:inherit;font-weight:700;cursor:pointer;text-decoration:none;text-align:center}
.btn:hover{background:#3d6618}
.btn.small{width:auto;margin:0;padding:.3rem .9rem;font-size:.8125rem}
.qr{display:flex;justify-content:center;padding:.5rem;background:#fff;border:1px solid var(--line);border-radius:8px;width:max-content;max-width:100%;margin:0 auto}
.qr svg{max-width:100%;height:auto}

/* ---- ヘッダ・ホーム ---- */
.top{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.75rem clamp(1rem,4vw,2.5rem);background:#fff;border-bottom:1px solid var(--line)}
.top nav{display:flex;align-items:center;gap:1rem;font-size:.875rem;white-space:nowrap}
.top nav form{display:inline}
.top a,.link{color:var(--sky-d);text-decoration:none;font-weight:700}
.link{background:none;border:0;padding:0;font:inherit;font-weight:700;cursor:pointer;color:var(--sky-d)}
.who{color:var(--mute)}
.hero{width:100%;aspect-ratio:1400/560;max-height:560px;background:url(hero.jpg) 50% 42%/cover no-repeat;display:flex;align-items:center}
.hero-copy{padding:1.5rem clamp(1rem,6vw,5rem);max-width:min(620px,100%)}
.hero-copy h1{font-size:clamp(1.5rem,3.4vw,2.4rem);border-left:6px solid var(--green);padding-left:.8rem;text-shadow:0 1px 0 rgba(255,255,255,.7)}
.hero-copy .lead{color:var(--ink);text-shadow:0 1px 0 rgba(255,255,255,.7)}
.wrap{max-width:1040px;margin:0 auto;padding:1.5rem 1rem 3rem}
.sec{font-size:1.25rem;border-left:6px solid var(--green);padding-left:.75rem;margin:2rem 0 1rem}
.sec span{display:block;font-size:.7rem;letter-spacing:.14em;color:var(--gold-d)}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}
.tile{display:flex;flex-direction:column;gap:.35rem;background:#fff;border:1px solid var(--line);border-top:5px solid var(--green);border-radius:10px;padding:1.1rem 1.1rem 1rem;text-decoration:none;color:var(--text);transition:transform .15s,box-shadow .15s}
.tile:nth-child(even){border-top-color:var(--sky)}
.tile:hover,.tile:focus-visible{transform:translateY(-2px);box-shadow:0 6px 18px rgba(31,41,55,.1)}
.tile:focus-visible{outline:3px solid var(--sky-d)}
.tile-label{font-size:1.125rem;font-weight:700;color:var(--ink)}
.tile-desc{font-size:.875rem;color:var(--mute);flex:1}
.tile-go{font-size:.875rem;font-weight:700;color:var(--sky-d)}
.cal iframe{width:100%;height:min(70vh,600px);min-height:420px;border:1px solid var(--line);border-radius:10px;background:#fff}
footer{margin-top:3rem;font-size:.75rem;color:var(--mute)}
.tablewrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:10px}
table{border-collapse:collapse;width:100%;font-size:.875rem}
th,td{padding:.6rem .8rem;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
th{background:var(--tint);color:var(--ink)}
.locked{color:var(--warn)}

@media (max-width:760px){
  .auth-wrap{grid-template-columns:1fr;grid-template-rows:140px 1fr}
  .auth-art{background-position:center 30%}
  .top{padding:.6rem 1rem}
  .top nav{gap:.6rem}
  .logo{height:28px}
  .who{display:none}
  .hero{aspect-ratio:auto;max-height:none;display:block;background:#eaf6fd url(hero.jpg) top center/100% auto no-repeat;padding-top:66%}
  .hero-copy{background:#fff;max-width:100%;padding:1.25rem 1rem;border-bottom:1px solid var(--line)}
  .hero-copy h1,.hero-copy .lead{text-shadow:none}
}

/* ---- エクスプローラー ---- */
.pagetitle{font-size:1.4rem;border-left:6px solid var(--green);padding-left:.75rem;margin:1rem 0}
.pagetitle span{display:block;font-size:.7rem;letter-spacing:.14em;color:var(--gold-d)}
.crumbs{display:flex;flex-wrap:wrap;gap:.25rem .4rem;align-items:center;font-size:.9rem;margin-bottom:1rem}
.crumbs a{color:var(--sky-d);font-weight:700;text-decoration:none}
.crumbs i{color:var(--mute);font-style:normal}
.alert.ok{background:#f0fdf4;border-color:#bbf7d0;color:#166534}
.fs-actions{display:flex;flex-wrap:wrap;gap:.75rem 1.5rem;margin-bottom:1rem}
.fs-actions form{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}
.small-in{width:12rem;max-width:100%;padding:.4rem .6rem}
.filebtn{display:inline-block;margin:0;padding:.35rem .8rem;border:1px solid #9ca3af;border-radius:8px;background:#fff;font-weight:700;cursor:pointer;font-size:.8125rem;max-width:100%;text-align:center}
.filebtn:focus-within{outline:3px solid var(--sky);outline-offset:1px}
.vh{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden}
.ic{display:inline-block;width:1.15em;height:1.15em;margin-right:.45em;vertical-align:-.2em;background:center/contain no-repeat}
.ic-dir{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%238bc34a' d='M3 6a2 2 0 012-2h4l2 2h8a2 2 0 012 2v10a2 2 0 01-2 2H5a2 2 0 01-2-2z'/%3E%3C/svg%3E")}
.ic-file{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%234fc3f7' d='M6 2h8l6 6v12a2 2 0 01-2 2H6a2 2 0 01-2-2V4a2 2 0 012-2z'/%3E%3Cpath fill='%23fff' d='M14 2l6 6h-5a1 1 0 01-1-1z'/%3E%3C/svg%3E")}
.ic-up{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='%2301579b' stroke-width='3' stroke-linecap='round' stroke-linejoin='round' d='M12 20V5M5 11l7-7 7 7'/%3E%3C/svg%3E")}
table.fs{table-layout:fixed}
table.fs th,table.fs td{white-space:normal;overflow-wrap:anywhere}
table.fs .nm a{color:var(--ink);text-decoration:none;font-weight:700}
table.fs .nm a:hover{color:var(--sky-d)}
table.fs .num{width:6.5rem;text-align:right;white-space:nowrap}
table.fs .col-date{width:10.5rem;white-space:nowrap}
table.fs .act{width:7rem}
table.fs details summary{cursor:pointer;color:var(--sky-d);font-weight:700;font-size:.8125rem}
table.fs details form{display:flex;flex-direction:column;gap:.4rem;margin-top:.4rem}
.empty{text-align:center;color:var(--mute);padding:1.5rem}
@media (max-width:760px){
  .fs-actions form{width:100%;flex-direction:column;align-items:stretch}
  .small-in{width:100%}
  .fs-actions .btn.small,.filebtn{width:100%;padding:.55rem .8rem}
  table.fs,table.fs tbody{display:block}
  table.fs thead{display:none}
  table.fs tr{display:grid;grid-template-columns:1fr auto;column-gap:.75rem;padding:.6rem .9rem;border-bottom:1px solid var(--line)}
  table.fs td{border:0;padding:.1rem 0;width:auto}
  table.fs td.nm,table.fs td.empty{grid-column:1/-1}
  table.fs .num{text-align:left;color:var(--mute);font-size:.8125rem}
  table.fs .col-date{display:none}
  table.fs .act{text-align:right;width:auto}
}

/* ---- 活動日誌 ---- */
.diary-latest{display:grid;grid-template-columns:minmax(0,320px) minmax(0,1fr);gap:1.25rem;align-items:center;background:#fff;border:1px solid var(--line);border-top:5px solid var(--sky);border-radius:10px;padding:1rem;text-decoration:none;color:var(--text)}
.diary-latest:hover,.diary-latest:focus-visible{box-shadow:0 6px 18px rgba(31,41,55,.1)}
.diary-latest img{width:100%;height:auto;border-radius:8px;display:block}
.diary-latest-body{display:flex;flex-direction:column;gap:.35rem;min-width:0}
.diary-text{color:var(--text);display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.more{text-align:right;margin:.5rem 0 0;font-size:.875rem}
.more a{color:var(--sky-d);font-weight:700;text-decoration:none}
.diary-date{font-size:.8125rem;font-weight:700;color:var(--gold-d)}
.diary-date em{font-style:normal;margin-left:.5rem;color:var(--warn)}
.diary-title{font-size:1.0625rem;font-weight:700;color:var(--ink);line-height:1.5}
.diary-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1rem}
.diary-card{display:flex;flex-direction:column;gap:.35rem;background:#fff;border:1px solid var(--line);border-radius:10px;padding:.75rem .75rem 1rem;text-decoration:none;color:var(--text);transition:transform .15s,box-shadow .15s}
.diary-card:hover,.diary-card:focus-visible{transform:translateY(-2px);box-shadow:0 6px 18px rgba(31,41,55,.1)}
.diary-card.is-hidden{opacity:.6}
.diary-card img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;border-radius:6px;display:block}
.diary-noimg{display:block;aspect-ratio:3/2;border-radius:6px;background:linear-gradient(135deg,var(--tint),#e1f5fe)}
.diary-chips{display:flex;flex-wrap:wrap;gap:.3rem}
.diary-chips i,.diary-project{font-style:normal;font-size:.75rem;background:var(--tint);color:var(--green-d);border-radius:999px;padding:.05rem .55rem;white-space:nowrap}
.month-nav{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin:1rem 0;font-size:.875rem}
.month-nav a{color:var(--sky-d);font-weight:700;text-decoration:none;white-space:nowrap}
.month-list{display:flex;flex-wrap:wrap;gap:.5rem 1rem;font-size:.875rem}
.month-list a{color:var(--sky-d);text-decoration:none;white-space:nowrap}
.month-list a[aria-current]{font-weight:700;color:var(--ink)}
.diary-entry{max-width:820px}
.diary-hero{width:100%;height:auto;border-radius:10px;display:block;margin:.5rem 0 1rem}
.diary-summary{font-size:1.0625rem;color:var(--ink);white-space:pre-line}
.diary-items{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.75rem}
.diary-items li{background:#fff;border:1px solid var(--line);border-left:5px solid var(--green);border-radius:8px;padding:.85rem 1rem}
.diary-items b{display:block;color:var(--ink);margin:.35rem 0 .2rem}
.diary-items p{margin:0;white-space:pre-line}
.diary-admin{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;margin-top:2rem;padding-top:1rem;border-top:1px solid var(--line)}
@media (max-width:760px){
  .diary-latest{grid-template-columns:1fr}
  .month-nav{font-size:.8125rem}
}