.class-notice{box-sizing:border-box;width:min(420px,calc(100% - 32px));max-height:calc(100dvh - 32px);margin:auto;padding:24px;border:1px solid var(--border);border-radius:18px;background:var(--surface-strong);color:var(--text);font-family:var(--font-sans);box-shadow:0 24px 80px rgba(0,0,0,.24);overflow:auto}
.class-notice::backdrop{background:rgba(4,20,10,.62);backdrop-filter:blur(4px)}
.class-notice-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}
.class-notice-kicker{font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.class-notice-close{display:grid;place-items:center;flex-shrink:0;width:44px;height:44px;border:1px solid var(--border);border-radius:50%;background:var(--surface);color:var(--text);font-size:26px;cursor:pointer}
.class-notice-icon{display:grid;place-items:center;width:56px;height:56px;border:1px solid var(--border);border-radius:16px;background:var(--surface);color:var(--accent);margin-bottom:18px}
.class-notice h2{font-family:var(--font-display);font-size:34px;font-weight:400;line-height:1.1;letter-spacing:.02em;margin:0 0 12px;color:var(--accent)}
.class-notice-date{font-family:var(--font-mono);font-size:11px;font-weight:500;line-height:1.6;color:var(--muted);margin:0 0 16px}
#class-notice-copy{font-size:14px;line-height:1.6;margin:0 0 24px;color:var(--text)}
.class-notice-done{width:100%;min-height:48px;padding:12px 18px;border:0;border-radius:10px;background:var(--accent);color:var(--notice-on-accent,#fff);font:600 14px var(--font-sans);cursor:pointer}
.class-notice button:hover{filter:brightness(.94)}
.class-notice button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
@media(min-width:768px){html[data-theme="dark"] .class-notice{--notice-on-accent:#0d1912}}
@media(max-width:767px){
  .class-notice{--surface-strong:#fff;--surface:#edf5eb;--text:#16210f;--muted:#52614c;--accent:#2f6b31;--border:rgba(22,33,15,.14);--font-sans:'Figtree','Inter',system-ui,sans-serif;--font-mono:'DM Mono','JetBrains Mono',monospace;--font-display:var(--font-mono);border-radius:24px}
  .class-notice h2{font-size:27px;font-weight:500;letter-spacing:-.03em;line-height:1.2}
  html[data-mobile-theme="dark"] .class-notice{color-scheme:dark;--surface-strong:#141414;--surface:#29231e;--text:#f5eee8;--muted:#c0afa1;--accent:#c47d46;--border:rgba(245,238,232,.16);--notice-on-accent:#211307}
}