:root{--bg:#f1f6f9;--panel:#fff;--line:#e4ebef;--line-strong:#cedae1;--ink:#111820;--muted:#5b6b75;--faint:#93a3ac;--accent:#0b7f9c;--accent-strong:#096178;--accent-fill:#54c2e5;--accent-soft:#e7f6fc;--warn:#d2532a;--warn-soft:#fff2ec;--warn-line:#f6cdbb;--ok:#12916b;--ok-soft:#e7f6f1;--pending:#8a5a00;--pending-soft:#fff4dd;--sans:"Zen Kaku Gothic New", -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;--mono:"IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;--shadow:0 1px 2px #1118200d, 0 8px 20px #1118200f;--radius:16px}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0;padding:0}body{background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-text-size-adjust:100%;font-size:16px;line-height:1.7}h1{margin:0 0 12px;font-size:20px;font-weight:700}h2{margin:0 0 12px;font-size:16px;font-weight:700}p{margin:0 0 12px}.muted{color:var(--muted)}.small{font-size:12.5px}.mono{font-family:var(--mono)}.mt8{margin-top:8px}.indent{margin-left:28px}.screen{max-width:560px;margin:0 auto;padding:16px 16px 96px}.screen.center{justify-content:center;align-items:center;min-height:100dvh;padding:24px;display:flex}.screen-title{margin:4px 0 16px;font-size:18px}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:14px;padding:20px}.onboard{width:min(420px,100%)}.app-name-label{color:var(--accent-strong);letter-spacing:.04em;margin-bottom:8px;font-size:12.5px;font-weight:700}.onboard-step{font-family:var(--mono);color:var(--faint);margin-bottom:6px;font-size:12px;font-weight:600}.confirm-box{background:var(--accent-soft);border:1px solid var(--accent);border-radius:12px;margin-bottom:14px;padding:12px 14px}.confirm-box-label{color:var(--muted);margin-bottom:2px;font-size:12.5px}.confirm-box-names{font-size:16px;font-weight:700}.field{flex-direction:column;gap:6px;margin-bottom:14px;display:flex}.field>span{color:var(--muted);font-size:13.5px;font-weight:600}input[type=text],input[type=password],input[type=number],input[type=date],select,textarea{font-family:var(--sans);border:1.5px solid var(--line-strong);color:var(--ink);background:#fff;border-radius:10px;width:100%;padding:12px 14px;font-size:16px}input:focus,select:focus,textarea:focus{border-color:var(--accent);outline:none}.lead{color:var(--muted);font-size:14.5px}.error{color:var(--warn);margin:-4px 0 12px;font-size:13.5px}.check-row{align-items:center;gap:10px;min-height:48px;padding:12px 0;font-size:15px;display:flex}.check-row input{width:22px;height:22px;accent-color:var(--accent);flex:none}.siblings{border-bottom:1px solid var(--line);margin-bottom:24px;padding-bottom:16px}.row-gap{flex-wrap:wrap;gap:10px;display:flex}.btn{appearance:none;border:1px solid var(--line-strong);font-family:var(--sans);color:var(--ink);cursor:pointer;background:#fff;border-radius:999px;min-height:46px;padding:12px 20px;font-size:15px;font-weight:600}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{background:var(--accent-strong)}.btn.big{width:100%;min-height:52px;margin-top:6px;font-size:16px}.btn.ghost{border-color:var(--line-strong);color:var(--muted);background:#fff}.btn.danger{border-color:var(--warn-line);color:var(--warn);background:#fff}.btn.small{min-height:36px;padding:8px 14px;font-size:13px}.btn.tiny{min-height:28px;padding:5px 11px;font-size:12px}.btn[disabled]{opacity:.45;cursor:not-allowed}.chip-row{gap:8px;display:flex;overflow-x:auto}.chip-row.wrap{flex-wrap:wrap}.chip{appearance:none;border:1.5px solid var(--line-strong);font-family:var(--sans);color:var(--ink);cursor:pointer;white-space:nowrap;background:#fff;border-radius:999px;min-height:40px;padding:9px 16px;font-size:14px;font-weight:600}.chip.on{background:var(--accent);border-color:var(--accent);color:#fff}.slot-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.slot-chip{white-space:normal;text-align:center;min-height:48px;line-height:1.4}.bill-current{text-align:center;padding:8px 0 16px}.bill-month{color:var(--muted);margin-bottom:4px;font-size:14px}.bill-amount{font-size:32px;font-weight:700;font-family:var(--mono)}.bill-diff{margin-top:6px;font-size:13.5px;font-weight:600}.bill-diff.up{color:var(--ink)}.bill-diff.down{color:var(--ok)}.bill-lines{border-top:1px solid var(--line);margin:0;padding:0;list-style:none}.bill-lines li{border-bottom:1px solid var(--line);justify-content:space-between;padding:10px 0;font-size:14.5px;display:flex}.bill-history{margin-top:16px}.bill-history-title{color:var(--muted);margin-bottom:8px;font-size:13.5px;font-weight:700}.bill-history-row{border-bottom:1px solid var(--line)}.bill-history-head{width:100%;color:var(--ink);cursor:pointer;background:0 0;border:none;justify-content:space-between;padding:12px 0;font-size:14.5px;font-weight:600;display:flex}.family-total{background:var(--accent-soft);border-color:var(--accent);flex-wrap:wrap;align-items:baseline;gap:4px 12px;display:flex}.family-total>span:first-child{color:var(--muted);flex:100%;font-size:14px}.family-total .bill-amount{font-size:26px}.absence-list{margin:0;padding:0;list-style:none}.absence-list li{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:10px;padding:10px 0;font-size:14px;display:flex}.absence-list li>div{flex:auto;min-width:0}.absence-list li .btn{white-space:nowrap;flex:none}.tag{background:var(--accent-soft);color:var(--accent-strong);border-radius:999px;align-items:center;gap:4px;margin-left:6px;padding:3px 10px;font-size:12px;font-weight:700;display:inline-flex}.tag.muted{background:var(--line);color:var(--muted)}.tag.ok{background:var(--ok-soft);color:var(--ok)}.tag.warn{background:var(--warn-soft);color:var(--warn)}.tag.pending{background:var(--pending-soft);color:var(--pending)}.notice-card.unread{border-color:var(--accent)}.notice-head{cursor:pointer;text-align:left;width:100%;font-family:var(--sans);color:var(--ink);background:0 0;border:none;flex-direction:column;align-items:flex-start;gap:4px;padding:0;display:flex}.notice-title-row{align-items:center;display:flex}.notice-title{font-size:15.5px;font-weight:700}.dot{background:var(--accent);border-radius:999px;width:8px;height:8px;margin-right:8px;display:inline-block}.notice-body{white-space:pre-wrap;border-top:1px solid var(--line);margin-top:12px;padding-top:12px;font-size:14.5px}.faq-q{cursor:pointer;width:100%;font-family:var(--sans);color:var(--ink);text-align:left;background:0 0;border:none;justify-content:space-between;align-items:center;padding:0;font-size:15px;font-weight:700;display:flex}.faq-arrow{color:var(--accent);font-size:18px}.faq-a{white-space:pre-wrap;color:var(--ink);border-top:1px solid var(--line);margin-top:12px;padding-top:12px;font-size:14.5px}.main-app{flex-direction:column;min-height:100dvh;display:flex}.app-header{background:var(--accent-fill);text-align:center;padding:16px}.app-header h1{color:#0b3a49;letter-spacing:.04em;margin:0;font-size:16px}.main-body{flex:1}.bottom-tabs{border-top:1px solid var(--line);background:#fff;display:flex;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -4px 16px #1118200f}.bottom-tabs button{padding:12px 4px calc(14px + env(safe-area-inset-bottom));font-family:var(--sans);color:var(--muted);cursor:pointer;background:0 0;border:none;flex:1;font-size:12px;font-weight:600}.bottom-tabs button.on{color:var(--accent-strong)}.gate{z-index:100;background:var(--accent-fill);justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.gate-box{width:min(380px,100%)}.admin-app{max-width:1100px;margin:0 auto;padding:0 16px 40px}.admin-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;padding:20px 0 8px;display:flex}.admin-header h1{margin:0;font-size:18px}.admin-header-right{align-items:center;gap:10px;display:flex}.admin-body{margin-top:14px}.admin-toolbar{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.tabs{gap:6px;padding-bottom:4px;display:flex;overflow-x:auto}.tab{appearance:none;border:1px solid var(--line);font-family:var(--sans);color:var(--muted);cursor:pointer;white-space:nowrap;background:#fff;border-radius:999px;padding:9px 16px;font-size:13.5px;font-weight:600}.tab.on{background:var(--ink);border-color:var(--ink);color:#fff}.badge{background:var(--warn);color:#fff;border-radius:999px;margin-left:4px;padding:1px 7px;font-size:11px;font-weight:700;display:inline-block}.admin-table{border-collapse:collapse;border:1px solid var(--line);border-radius:var(--radius);background:#fff;width:100%;font-size:13.5px;overflow:hidden}.admin-table th,.admin-table td{border-bottom:1px solid var(--line);text-align:left;vertical-align:middle;padding:10px 12px}.admin-table th{background:var(--bg);color:var(--muted);font-size:12px;font-weight:700}.row-cancelled{opacity:.55}.link-student-row{align-items:center;gap:6px;margin:2px 8px 2px 0;display:inline-flex}.avatar{vertical-align:middle;border-radius:999px;width:24px;height:24px;margin-right:6px}