.odai-box-widget {
  --odai-ink: #17212b;
  --odai-paper: #fffaf0;
  --odai-cyan: #58cfde;
  --odai-yellow: #f3ca52;
  --odai-coral: #ef634f;
  position: relative;
  max-width: 720px;
  margin: 2.5rem auto;
  padding: clamp(1.5rem, 5vw, 3rem);
  overflow: hidden;
  color: var(--odai-paper);
  background: var(--odai-ink);
  border: 1px solid rgba(255,255,255,.14);
  box-shadow: 12px 12px 0 var(--odai-cyan);
  font-family: "Yu Gothic UI", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}
.odai-box-widget *, .odai-box-widget *::before, .odai-box-widget *::after { box-sizing: border-box; }
.odai-box-widget::after { content: "ODAI"; position: absolute; right: -8px; bottom: -28px; color: rgba(255,255,255,.045); font: 900 clamp(5rem, 18vw, 9rem)/1 Arial, sans-serif; letter-spacing: -.1em; pointer-events: none; }
.odai-box-heading { position: relative; z-index: 1; display: flex; align-items: center; gap: 1.1rem; }
.odai-box-mark { display: grid; flex: 0 0 auto; place-items: center; width: 58px; height: 58px; color: var(--odai-ink); background: var(--odai-yellow); font-size: 1.7rem; font-weight: 900; transform: rotate(-4deg); }
.odai-box-kicker { display: block; margin-bottom: .25rem; color: var(--odai-cyan); font-size: .62rem; font-weight: 900; letter-spacing: .18em; }
.odai-box-heading h2 { margin: 0 !important; color: var(--odai-paper) !important; font-size: clamp(1.65rem, 5vw, 2.65rem) !important; line-height: 1.12 !important; letter-spacing: -.045em; }
.odai-box-intro { position: relative; z-index: 1; margin: 1.25rem 0 2rem; color: #b8c1c8; font-size: .93rem; line-height: 1.8; white-space: pre-line; }
.odai-box-form { position: relative; z-index: 2; margin: 0; }
.odai-box-field { position: relative; margin-bottom: 1.25rem; }
.odai-box-field label { display: block; margin-bottom: .55rem; color: var(--odai-paper); font-size: .84rem; font-weight: 800; }
.odai-box-field label span { display: inline-block; margin-left: .45rem; padding: .12rem .38rem; color: var(--odai-ink); background: var(--odai-yellow); font-size: .62rem; vertical-align: .12rem; }
.odai-box-field label small { margin-left: .3rem; color: #8f9ca7; font-size: .72rem; font-weight: 600; }
.odai-box-field textarea, .odai-box-field input { display: block; width: 100%; margin: 0; color: var(--odai-paper); background: #0d151d; border: 1px solid rgba(255,255,255,.18); border-radius: 0; box-shadow: none; font: inherit; outline: 0; }
.odai-box-field textarea { min-height: 128px; padding: 1rem 1rem 2rem; resize: vertical; line-height: 1.65; }
.odai-box-field input { height: 50px; padding: 0 1rem; }
.odai-box-field textarea:focus, .odai-box-field input:focus { border-color: var(--odai-cyan); box-shadow: 0 0 0 3px rgba(88,207,222,.18); }
.odai-box-field textarea::placeholder, .odai-box-field input::placeholder { color: #63717d; opacity: 1; }
.odai-box-counter { position: absolute; right: .75rem; bottom: .55rem; color: #72808b; font: .7rem Consolas, monospace; }
.odai-box-submit { display: flex; align-items: center; justify-content: space-between; width: 100%; min-height: 58px; padding: 0 1.25rem; color: var(--odai-ink); background: var(--odai-yellow); border: 0; border-radius: 0; font: 900 .96rem/1 inherit; cursor: pointer; transition: filter .15s ease, transform .15s ease; }
.odai-box-submit:hover { filter: brightness(1.08); transform: translateY(-2px); }
.odai-box-submit:focus-visible { outline: 3px solid var(--odai-cyan); outline-offset: 3px; }
.odai-box-submit:disabled { cursor: wait; filter: saturate(.3); transform: none; }
.odai-box-submit i { font-style: normal; font-size: 1.5rem; }
.odai-box-status { min-height: 1.5em; margin: .8rem 0 0; color: #bbc5cc; font-size: .82rem; font-weight: 700; }
.odai-box-status.is-success { color: #7ce2a6; }
.odai-box-status.is-error { color: #ff9a8b; }
.odai-box-note { position: relative; z-index: 1; margin: 1.4rem 0 0; color: #788691; font-size: .72rem; line-height: 1.6; white-space: pre-line; }
.odai-box-trap { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }

@media (max-width: 520px) {
  .odai-box-widget { margin-inline: .5rem; padding: 1.35rem; box-shadow: 7px 7px 0 var(--odai-cyan); }
  .odai-box-mark { width: 48px; height: 48px; font-size: 1.35rem; }
  .odai-box-intro { margin-bottom: 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  .odai-box-submit { transition: none; }
}