/* 问题反馈页：组织双渠道说明、登录态表单与安全输入提示。 */
.feedback-main {
  min-width: 0;
}

.feedback-hero {
  padding-block: clamp(68px, 8vw, 128px);
  border-bottom: 1px solid var(--line-strong);
  background: var(--paper-alt);
}

.feedback-hero-grid,
.feedback-form-layout {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 0.9fr) minmax(520px, 1.1fr);
  gap: var(--space-8);
  align-items: start;
}

.feedback-heading h1 {
  max-width: 760px;
  margin-block: var(--space-3) var(--space-4);
  font-size: clamp(3.25rem, 6.8vw, 7rem);
  letter-spacing: -0.065em;
  line-height: 0.94;
}

html[lang="en"] .feedback-heading h1 {
  font-size: clamp(2.8rem, 5.4vw, 5.6rem);
  line-height: 0.98;
}

.feedback-heading > p:last-child,
.feedback-channel p,
.feedback-safety p,
.feedback-safety li {
  color: var(--ink-soft);
}

.feedback-channels {
  display: grid;
  border: 1px solid var(--line-strong);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feedback-channel {
  display: flex;
  min-width: 0;
  min-height: 310px;
  flex-direction: column;
  align-items: flex-start;
  padding: clamp(24px, 3vw, 42px);
  background: var(--paper-raised);
}

.feedback-channel + .feedback-channel {
  border-left: 1px solid var(--line-strong);
}

.feedback-channel-site {
  box-shadow: inset 0 4px 0 var(--accent);
}

.feedback-channel h2 {
  margin-block: var(--space-4) var(--space-3);
  font-size: clamp(1.55rem, 2.5vw, 2.4rem);
}

.feedback-channel p {
  flex: 1;
}

.feedback-form-band {
  background: var(--paper);
}

.feedback-form-layout {
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
}

.feedback-safety ul {
  display: grid;
  gap: 10px;
  padding-left: 1.25rem;
}

.feedback-form-panel {
  min-width: 0;
  padding: clamp(22px, 3vw, 38px);
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
}

.feedback-auth-state,
.feedback-result {
  min-height: 24px;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.feedback-auth-state[data-state="ready"],
.feedback-result[data-tone="success"] {
  color: var(--success, #17633a);
}

.feedback-auth-state[data-state="signed-out"],
.feedback-result[data-tone="error"] {
  color: var(--accent-text);
}

.feedback-login {
  margin-top: var(--space-3);
}

.feedback-login[hidden] {
  display: none;
}

.feedback-form {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.feedback-field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.feedback-form textarea {
  resize: vertical;
}

.feedback-confirm {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.55;
}

.feedback-confirm input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
}

@media (max-width: 1080px) {
  .feedback-hero-grid,
  .feedback-form-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .feedback-channels,
  .feedback-field-grid {
    grid-template-columns: 1fr;
  }

  .feedback-channel {
    min-height: 0;
  }

  .feedback-channel + .feedback-channel {
    border-top: 1px solid var(--line-strong);
    border-left: 0;
  }
}