:root{color-scheme:light;--ink:#13302f;--muted:#647876;--brand:#0f766e;--brand-deep:#0a5a54;--brand-soft:#dff5f0;--line:#d9e5e2;--surface:#ffffff;--background:#eff7f4;--danger:#b42318;--danger-soft:#fff0ed;--success:#087a55;--success-soft:#e7f7ef}*{box-sizing:border-box}html{background:var(--background)}body{margin:0;color:var(--ink);background:radial-gradient(circle at 5% 0,rgba(99,213,187,.25),transparent 28rem),linear-gradient(180deg,#e9f7f3 0,var(--background) 22rem);font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input{font:inherit}.page-shell{width:min(100%,560px);min-height:100vh;margin:0 auto;padding:28px 16px 48px}.hero{padding:18px 6px 20px}.eyebrow{margin-bottom:8px;color:var(--brand);font-size:12px;font-weight:800;letter-spacing:.16em}h1,h2,p{margin:0}h1{font-size:clamp(30px,9vw,42px);line-height:1.12;letter-spacing:-.035em}.hero-subtitle{margin-top:10px;color:var(--muted);font-size:15px}.card{margin-bottom:14px;padding:20px;border:1px solid rgba(15,118,110,.11);border-radius:22px;background:rgba(255,255,255,.94);box-shadow:0 14px 40px rgba(21,70,66,.08);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.event-card{color:#fff;border:0;background:linear-gradient(135deg,var(--brand-deep),#159286)}.event-row{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.event-row div{display:grid;grid-gap:5px;gap:5px}.event-row .label{color:rgba(255,255,255,.72);font-size:12px}.event-row strong{font-size:20px}.status{flex:0 0 auto;padding:7px 11px;border-radius:999px;font-size:12px;font-weight:800}.status.open{color:#075b44;background:#d9fff0}.status.closed{color:#6b4b00;background:#fff3c4}.deadline{margin-top:13px;color:rgba(255,255,255,.78);font-size:14px}.section-heading{display:flex;align-items:center;gap:12px;margin-bottom:18px}.section-heading>span{display:grid;width:34px;height:34px;place-items:center;border-radius:12px;color:#fff;background:var(--brand);font-size:14px;font-weight:800}.section-heading h2{font-size:18px}.section-heading p{margin-top:3px;color:var(--muted);font-size:12px}.activities-heading{margin-top:26px}.field{display:grid;grid-gap:7px;gap:7px;margin-top:13px}.field>span{color:#395451;font-size:13px;font-weight:700}.field input{width:100%;min-height:50px;padding:0 15px;border:1px solid var(--line);border-radius:14px;outline:none;color:var(--ink);background:#fbfdfc;font-size:16px;transition:border-color .16s ease,box-shadow .16s ease}.field input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(15,118,110,.1)}.activity-grid{display:grid;grid-gap:10px;gap:10px}.activity-group{overflow:hidden;border:1px solid var(--line);border-radius:16px;background:#fbfefd}.activity-group.selected{border-color:var(--brand);background:var(--brand-soft)}.activity-option{display:flex;min-height:66px;align-items:center;gap:12px;width:100%;padding:10px 12px;border:0;border-radius:0;color:var(--ink);background:#fbfdfc;text-align:left;cursor:pointer;transition:transform .12s ease,border-color .12s ease,background .12s ease}.activity-option:active{transform:scale(.985)}.activity-option:disabled{opacity:.5;cursor:not-allowed}.activity-icon{display:grid;width:42px;height:42px;flex:0 0 auto;place-items:center;border-radius:13px;background:#fff;font-size:24px}.activity-copy{display:grid;flex:1 1;grid-gap:3px;gap:3px}.activity-copy strong{font-size:16px}.activity-copy small{color:var(--muted)}.checkmark{display:grid;width:25px;height:25px;place-items:center;border:1.5px solid #b7c9c5;border-radius:50%;color:#fff;font-weight:900}.activity-group.selected .checkmark{border-color:var(--brand);background:var(--brand)}.roster-toggle{width:100%;padding:9px 13px;border:0;border-top:1px solid #e1efeb;color:#52746e;background:rgba(255,255,255,.58);text-align:left;font-size:13px;font-weight:700;cursor:pointer}.roster-panel{display:flex;flex-wrap:wrap;gap:7px;padding:10px 13px 13px;border-top:1px solid #e8f1ef}.name-chip{padding:5px 9px;border:1px solid #d6e8e3;border-radius:999px;color:#315c54;background:#fff;font-size:13px}.empty-roster{color:var(--muted);font-size:13px}.empty-state{padding:18px;border:1px dashed var(--line);border-radius:14px;color:var(--muted);text-align:center}.submit-button{width:100%;min-height:52px;margin-top:20px;border:0;border-radius:15px;color:#fff;background:linear-gradient(135deg,var(--brand),#168f84);box-shadow:0 10px 24px rgba(15,118,110,.2);font-size:16px;font-weight:800;cursor:pointer}.submit-button:disabled{box-shadow:none;opacity:.42;cursor:not-allowed}.cancel-button{width:100%;min-height:48px;margin-top:10px;border:1px solid #f1c9c4;border-radius:15px;color:var(--danger);background:var(--danger-soft);font-size:15px;font-weight:800;cursor:pointer}.cancel-button:disabled{color:#aab4b1;background:#f3f5f4;border-color:#e3e8e6;cursor:not-allowed}.privacy{margin-top:10px;color:var(--muted);font-size:11px;text-align:center}.notice{margin-top:16px;padding:12px 14px;border-radius:12px;font-size:13px;font-weight:700}.notice.ok{color:var(--success);background:var(--success-soft)}.notice.error{color:var(--danger);background:var(--danger-soft)}.refresh-button{display:block;margin:8px auto 0;padding:10px 16px;border:0;color:var(--brand);background:transparent;font-weight:700;cursor:pointer}.skeleton-stack{display:grid;grid-gap:12px;gap:12px}.skeleton{width:58%;height:14px;border-radius:999px;background:rgba(255,255,255,.23);animation:pulse 1.2s ease-in-out infinite alternate}.skeleton.wide{width:80%;height:22px}@keyframes pulse{to{opacity:.42}}@media (min-width:600px){.page-shell{padding-top:48px}.card{padding:24px}}