:root{--ink:#1b2430;--muted:#5c6878;--line:#d9dee5;--bg:#f5f7fa;--card:#fff;--brand:#1f3a5f;--brand-ink:#fff;--accent:#2f6fb3;--danger:#b3261e;--ok-bg:#e6f4ea;--ok-ink:#1e5b32;--err-bg:#fdecea;--radius:10px;--tap:44px;color:var(--ink);background:var(--bg);-webkit-text-size-adjust:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box}body{min-height:100dvh;margin:0}h1{margin:.25rem 0 1rem;font-size:1.5rem;line-height:1.25}h2{margin:1.5rem 0 .75rem;font-size:1.15rem}p{margin:0 0 .75rem}a{color:var(--accent)}.muted{color:var(--muted)}.small{font-size:.9rem}.eyebrow{text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0;font-size:.75rem}label{flex-direction:column;gap:.35rem;font-size:.95rem;font-weight:600;display:flex}input,select{font:inherit;min-height:var(--tap);border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:8px;width:100%;padding:.5rem .75rem;font-size:1rem;font-weight:400}input:focus-visible,select:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid color-mix(in srgb, var(--accent) 45%, transparent);outline-offset:2px}button{font:inherit;min-height:var(--tap);cursor:pointer;border:1px solid #0000;border-radius:8px;padding:.5rem 1rem;font-weight:600}button:disabled{opacity:.6;cursor:default}.primary{background:var(--brand);color:var(--brand-ink)}.secondary{color:var(--ink);border-color:var(--line);background:#fff}.danger{color:var(--danger);border-color:color-mix(in srgb, var(--danger) 40%, white);background:#fff}.link-button{color:var(--accent);text-align:left;background:0 0;border:none;padding:.5rem 0}.stack{flex-direction:column;gap:1rem;display:flex}.grid-2{grid-template-columns:1fr;gap:1rem;display:grid}.actions{flex-wrap:wrap;gap:.5rem;display:flex}.actions>button{flex:auto}.error{background:var(--err-bg);color:var(--danger);border-radius:8px;padding:.75rem}.notice{background:var(--ok-bg);color:var(--ok-ink);border-radius:8px;padding:.75rem}.center-screen{place-items:center;min-height:100dvh;padding:1rem;display:grid}.auth-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);width:100%;max-width:400px;padding:1.5rem}.auth-card .primary,.auth-card .secondary{width:100%}.brand-mark{background:var(--brand);width:44px;height:44px;color:var(--brand-ink);border-radius:10px;place-items:center;margin:0 0 .75rem;font-weight:700;display:inline-grid}.brand-mark.small{border-radius:8px;width:32px;height:32px;margin:0;font-size:.85rem}.topbar{z-index:10;padding:.5rem 1rem;padding-top:max(.5rem, env(safe-area-inset-top));background:var(--card);border-bottom:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem;display:flex;position:sticky;top:0}.brand{min-height:var(--tap);color:var(--ink);align-items:center;gap:.5rem;font-weight:700;text-decoration:none;display:flex}.menu-button{border-color:var(--line);color:var(--ink);background:#fff}.nav{flex-direction:column;width:100%;padding-bottom:.5rem;display:none}.nav.open{display:flex}.nav a{min-height:var(--tap);color:var(--ink);border-radius:8px;align-items:center;padding:0 .5rem;text-decoration:none;display:flex}.nav a.active{background:var(--bg);font-weight:700}.nav-user{color:var(--muted);padding:.5rem;font-size:.9rem}.content{padding:1rem;padding-bottom:max(1rem, env(safe-area-inset-bottom));max-width:960px;margin:0 auto}.page{display:block}.empty-state{background:var(--card);border:1px dashed var(--line);border-radius:var(--radius);padding:1.25rem}.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1rem}.panel h2{margin-top:0}.member-list{flex-direction:column;gap:.75rem;margin:0;padding:0;list-style:none;display:flex}.member-row{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1rem}.member-main{justify-content:space-between;align-items:flex-start;gap:.75rem;display:flex}.member-name{margin:0;font-weight:700}.member-main .small{word-break:break-all;margin:0}.edit-form{margin-top:.75rem}.badge{background:var(--bg);color:var(--muted);border:1px solid var(--line);border-radius:999px;flex:none;padding:.2rem .6rem;font-size:.8rem;font-weight:700}.badge-joined{background:var(--ok-bg);color:var(--ok-ink);border-color:#0000}.badge-invited{color:var(--accent);background:#eef3fb;border-color:#0000}.badge-alumni,.badge-no-access{background:var(--err-bg);color:var(--danger);border-color:#0000}@media (width>=768px){h1{font-size:1.85rem}.content{padding:2rem}.menu-button{display:none}.nav,.nav.open{flex-direction:row;align-items:center;gap:.25rem;width:auto;padding:0;display:flex}.grid-2{grid-template-columns:1fr 1fr}.actions>button{flex:none}.panel{padding:1.5rem}.member-row{grid-template-columns:2fr 2fr auto;align-items:center;gap:1rem;display:grid}.member-row>p{margin:0}.member-row .edit-form{grid-column:1/-1}}.share-link{background:#eef3fb;border-radius:8px;margin-top:.75rem;padding:.75rem}.share-link p{margin:0}@media (width>=768px){.member-row .share-link{grid-column:1/-1}}