:root{--bg: #F5F6EF;--surface: #FFFFFF;--sunk: #EEF0E6;--ink: #33291F;--ink-soft: #6B5F52;--line: #DCD6C6;--ring: #C9A57C;--ring-soft: #EADBC6;--accent: #4F7A45;--accent-bg: #E5EEDD;--school: #B9741F;--school-bg: #F6E7D0;--warn: #B4532A;--warn-bg: #F8E2D6;--info: #3F5F8F;--info-bg: #E0E8F3;--good: #4F7A45;--good-bg: #E5EEDD;--font-display: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Hiragino Sans", sans-serif;--font-body: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;color-scheme:light}@media (prefers-color-scheme: dark){:root{--bg: #1E1B16;--surface: #29241D;--sunk: #231F19;--ink: #F0E9DD;--ink-soft: #B9AE9E;--line: #433B30;--ring: #B48E63;--ring-soft: #4A3D2E;--accent: #9CC58C;--accent-bg: #2D3A27;--school: #E3A452;--school-bg: #43341F;--warn: #F0A07A;--warn-bg: #4A2C1F;--info: #9DB8E0;--info-bg: #26324A;--good: #9CC58C;--good-bg: #2D3A27;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0}body{background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:16px;line-height:1.65;-webkit-text-size-adjust:100%}h1,h2,h3{font-family:var(--font-display);margin:0;line-height:1.4;text-wrap:balance}p{margin:0}a{color:inherit}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (prefers-reduced-motion: reduce){*{transition:none!important}}.muted{color:var(--ink-soft)}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.small{font-size:.86rem}.stack{display:flex;flex-direction:column;gap:12px}.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.grow{flex:1;min-width:0}.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:10px;min-width:0}.card-h{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.card h2{font-size:1.08rem}.page-title{font-size:1.4rem}.btn{border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:9px 16px;font-weight:700;font-size:.95rem;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:6px}.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--surface)}.btn.school{background:var(--school);border-color:var(--school);color:var(--surface)}.btn.sm{padding:4px 12px;font-size:.84rem;border-radius:10px}.btn.block{width:100%}.btn.danger{color:var(--warn)}.btn:disabled{opacity:.5;cursor:default}.linkbtn{border:0;background:none;color:var(--ink-soft);text-decoration:underline;padding:0;font-size:.86rem}.chip{display:inline-flex;align-items:center;gap:4px;font-size:.78rem;font-weight:700;padding:1px 10px;border-radius:999px;background:var(--sunk);color:var(--ink-soft);white-space:nowrap}.chip.ok{background:var(--good-bg);color:var(--good)}.chip.warn{background:var(--warn-bg);color:var(--warn)}.chip.info{background:var(--info-bg);color:var(--info)}.badge{background:var(--warn);color:#fff;border-radius:999px;font-size:.72rem;min-width:20px;height:20px;display:inline-grid;place-items:center;padding:0 6px;font-weight:700}.field{display:flex;flex-direction:column;gap:4px;min-width:0}.field>span{font-weight:700;color:var(--ink-soft);font-size:.82rem}.field input,.field select,.field textarea{border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:var(--surface);width:100%;font-size:1rem}.field textarea{min-height:90px;resize:vertical}.check{display:flex;align-items:flex-start;gap:10px;font-size:.95rem}.check input{width:20px;height:20px;margin-top:3px;flex:none}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}@media (max-width: 520px){.grid2{grid-template-columns:1fr}}.empty{text-align:center;padding:22px 12px;color:var(--ink-soft);font-size:.92rem;border:1px dashed var(--line);border-radius:12px}.error{background:var(--warn-bg);color:var(--warn);border-radius:12px;padding:10px 12px;font-size:.9rem}.list{display:flex;flex-direction:column}.li{display:flex;gap:12px;align-items:flex-start;padding:11px 0;border-bottom:1px solid var(--line);text-decoration:none;color:inherit}.li:last-child{border-bottom:0}a.li:hover .li-title{text-decoration:underline}.li-title{font-weight:700}.date-badge{width:54px;flex:none;text-align:center;border-radius:12px;background:var(--sunk);padding:4px 0;font-family:var(--font-display);font-weight:700;font-size:.92rem;line-height:1.3;font-variant-numeric:tabular-nums}.date-badge small{display:block;font-family:var(--font-body);font-weight:500;font-size:.72rem;color:var(--ink-soft)}.date-badge.today{background:var(--accent);color:var(--surface)}.date-badge.today 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18px;border-radius:999px;font-size:.92rem;font-weight:700;max-width:calc(100% - 32px);text-align:center}.demo-bar{background:var(--school-bg);color:var(--school);font-size:.8rem;font-weight:700;padding:6px max(16px,env(safe-area-inset-right,0px)) 6px max(16px,env(safe-area-inset-left,0px));padding-top:calc(6px + env(safe-area-inset-top,0px));display:flex;gap:10px;align-items:center;justify-content:center;flex-wrap:wrap}.demo-bar button{border:1px solid currentColor;background:none;color:inherit;border-radius:999px;padding:0 10px;font-size:.78rem;font-weight:700}.center{min-height:100dvh;display:grid;place-items:center;padding:24px max(16px,env(safe-area-inset-right,0px)) 24px max(16px,env(safe-area-inset-left,0px))}.login{width:100%;max-width:400px;display:flex;flex-direction:column;gap:18px}.logo{display:flex;align-items:center;gap:12px}.logo h1{font-size:1.8rem}.p-shell{max-width:560px;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column}.p-head{position:sticky;top:0;z-index:10;background:var(--bg);padding:calc(12px + env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) 10px max(16px,env(safe-area-inset-left,0px));display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.p-head b{font-family:var(--font-display);color:var(--accent);font-size:1.15rem}.p-main{flex:1;padding:16px max(16px,env(safe-area-inset-right,0px)) calc(96px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px));display:flex;flex-direction:column;gap:14px}.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:20;background:var(--surface);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom,0px)}.tabbar-in{max-width:560px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr)}.tabbar a{padding:8px 2px 6px;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:.72rem;font-weight:700;color:var(--ink-soft);text-decoration:none;position:relative}.tabbar a.active{color:var(--accent)}.tabbar svg{width:24px;height:24px}.tabbar .badge{position:absolute;top:2px;left:calc(50% + 6px)}.thread{display:flex;flex-direction:column;gap:10px}.bubble-row{display:flex;flex-direction:column;gap:2px;max-width:86%}.bubble-row.mine{align-self:flex-end;align-items:flex-end}.bubble{border-radius:16px;padding:9px 13px;background:var(--surface);border:1px solid var(--line);white-space:pre-wrap;overflow-wrap:anywhere}.bubble-row.mine .bubble{background:var(--accent-bg);border-color:transparent}.bubble.absence{border:1.5px solid var(--warn)}.bubble-meta{font-size:.72rem;color:var(--ink-soft)}.composer{position:sticky;bottom:calc(64px + env(safe-area-inset-bottom,0px));background:var(--bg);padding-block:8px;display:flex;flex-direction:column;gap:8px;border-top:1px solid var(--line)}.staff .composer{bottom:0}.s-top{position:sticky;top:0;z-index:10;background:var(--surface);border-bottom:1px solid var(--line);padding:calc(10px + env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) 10px max(16px,env(safe-area-inset-left,0px))}.s-top-in{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:12px;flex-wrap:wrap}.s-top b{font-family:var(--font-display);font-size:1.1rem}.s-body{max-width:1180px;margin:0 auto;padding:18px max(16px,env(safe-area-inset-right,0px)) 40px max(16px,env(safe-area-inset-left,0px));display:grid;grid-template-columns:200px minmax(0,1fr);gap:22px;align-items:start}.side{position:sticky;top:76px;display:flex;flex-direction:column;gap:4px}.side a{text-decoration:none;padding:9px 12px;border-radius:10px;font-weight:700;font-size:.95rem;display:flex;justify-content:space-between;align-items:center;color:var(--ink-soft)}.side a.active{background:var(--surface);color:var(--ink);box-shadow:inset 3px 0 0 var(--school)}.content{display:flex;flex-direction:column;gap:16px;min-width:0}.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}.tile{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 16px;display:flex;flex-direction:column;gap:2px;text-decoration:none;color:inherit}.tile span{font-size:.8rem;color:var(--ink-soft);font-weight:700}.tile strong{font-family:var(--font-display);font-size:1.7rem;font-variant-numeric:tabular-nums;line-height:1.3}.tile small{font-size:.78rem;color:var(--ink-soft)}.cols2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;align-items:start}.code-box{font-family:var(--font-display);font-size:1.6rem;font-weight:700;letter-spacing:.1em;text-align:center;background:var(--sunk);border-radius:12px;padding:8px 0}.kv{display:grid;grid-template-columns:7em minmax(0,1fr);gap:6px 12px;font-size:.92rem;margin:0}.kv dt{color:var(--ink-soft);font-weight:700;font-size:.82rem;padding-top:2px}.kv dd{margin:0;overflow-wrap:anywhere}@media (max-width: 860px){.s-body{grid-template-columns:1fr}.side{position:static;flex-direction:row;overflow-x:auto;padding-bottom:4px}.side a{white-space:nowrap;gap:6px}.side a.active{box-shadow:inset 0 -3px 0 var(--school)}.cols2{grid-template-columns:1fr}}