/* =============================================================
   contact.css — 联系页特有样式（与 knauf.css 共用基础样式）
   ============================================================= */

/* ===== Page Banner（蓝色渐变） ===== */
.page-banner {
  background: linear-gradient(135deg, #003e8a 0%, #0064c8 100%);
  color: #fff;
  padding: 72px 0;
}
.page-banner h1 {
  font-size: 40px; font-weight: 700;
  margin-bottom: 12px;
}
.page-banner p {
  font-size: 16px; opacity: .9;
  max-width: 640px;
}

/* ===== 主体：左右两栏 ===== */
.contact-section { padding: 72px 0 96px; background: #fff; }
.contact-layout {
  display: grid; grid-template-columns: 1fr 1.3fr; gap: 48px;
}

/* 左：信息面板 */
.info-panel h2 {
  font-size: 22px; color: var(--brand);
  margin-bottom: 8px;
}
.section-intro {
  color: var(--text-3); margin-bottom: 28px;
  font-size: 15px;
}

.info-card {
  background: var(--bg-soft);
  border-radius: 8px;
  padding: 28px;
  border: 1px solid var(--line);
}
.info-card h3 {
  font-size: 18px; color: var(--brand);
  margin-bottom: 4px;
}
.info-card__label {
  font-size: 12px; color: var(--text-3);
  letter-spacing: .04em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.info-item {
  display: flex; gap: 10px; align-items: flex-start;
  margin-bottom: 10px;
  font-size: 15px; color: var(--text-2);
}
.info-item:last-child { margin-bottom: 0; }
.info-item svg {
  width: 18px; height: 18px;
  fill: var(--brand);
  flex-shrink: 0;
  margin-top: 2px;
}
.info-item a:hover { color: var(--brand); text-decoration: underline; }

/* 右：表单面板 */
.form-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 36px 36px 32px;
}
.form-panel h2 {
  font-size: 22px; color: var(--brand);
  margin-bottom: 6px;
}
.form-panel .section-intro { margin-bottom: 24px; font-size: 14px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.form-field { margin-bottom: 16px; }
.form-field label {
  display: block;
  font-size: 13px; font-weight: 600;
  color: var(--text-2);
  margin-bottom: 6px;
}
.required-mark { color: #e23; }

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 11px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  transition: border-color .15s, box-shadow .15s;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 0;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(0, 74, 159, .12);
}
.form-field textarea { min-height: 120px; resize: vertical; line-height: 1.6; }

.btn-submit {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--brand); color: #fff;
  font-size: 15px; font-weight: 600;
  border: 0;
  padding: 13px 28px;
  border-radius: 6px;
  cursor: pointer;
  transition: background .15s;
}
.btn-submit:hover { background: var(--brand-hover); }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .contact-layout { grid-template-columns: 1fr; gap: 32px; }
  .form-row { grid-template-columns: 1fr; }
  .page-banner h1 { font-size: 28px; }
  .page-banner { padding: 52px 0; }
}