/* sections-3.css —— S10 留资表单 + S11 页脚 + 滚动常驻 CTA 条。
   依赖：tokens/base/layout/components */

/* ================= S10 留资表单（深） ================= */
.lead-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--site-grid-gap);
  align-items: start;
}
.promise { display: grid; gap: 12px; margin-top: 24px; }
.promise li {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  gap: 10px;
  font-size: var(--site-body-sm);
  line-height: 1.6;
  color: var(--site-ink-text-2);
}
.promise .icon { color: var(--site-ink-text-2); margin-top: 3px; }

.form-card {
  background: var(--site-surface);
  border-radius: var(--site-radius-xl);
  padding: 32px;
  box-shadow: var(--site-shadow-card-dark);
}
.form-card__title { font-size: var(--site-display-sub); line-height: var(--site-lh-sub); font-weight: 600; color: var(--site-text-1); }
.form-card__desc { margin-top: 8px; font-size: var(--site-body-sm); line-height: 1.6; color: var(--site-text-2); }
.form-card__body { margin-top: 24px; }
.form-card__foot { margin-top: 24px; display: grid; gap: 12px; }
.form-card__note { font-size: var(--site-body-xs); color: var(--site-text-3); line-height: 1.6; }
.form-status { margin-top: 16px; }
.form-status[hidden] { display: none; }
.form-success { display: none; padding: 24px 0; text-align: left; }
.form-success.is-shown { display: block; }
.form-success__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--site-body-md);
  font-weight: 600;
  color: var(--state-processing-ink);
}
.form-success__desc { margin-top: 10px; font-size: var(--site-body-sm); line-height: 1.7; color: var(--site-text-2); }
.fallback { display: none; margin-top: 16px; padding: 16px; border-radius: var(--site-radius-md); background: var(--site-surface-2); }
.fallback.is-shown { display: block; }
.fallback__title { font-size: var(--site-body-sm); font-weight: 600; color: var(--site-text-1); }
.fallback__phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-size: var(--site-body-md);
  font-weight: 600;
  color: var(--site-accent);
  font-family: var(--site-font-mono);
  text-decoration: none;
}
.fallback__phone:hover { text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 767px) {
  .lead-grid { grid-template-columns: minmax(0, 1fr); }
  .form-card { padding: 20px; }
}

/* ================= S11 页脚（深） ================= */
.site-footer {
  background: var(--site-ink-900);
  color: var(--site-ink-text-3);
  padding-block: 64px 32px;
  border-top: 1px solid var(--site-ink-border);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 4fr) repeat(2, minmax(0, 2fr));
  gap: var(--site-grid-gap);
}
.footer-col__title {
  font-size: var(--site-body-xs);
  font-weight: 500;
  letter-spacing: var(--site-tracking-eyebrow);
  color: var(--site-ink-text-2);
  margin-bottom: 14px;
}
.footer-col li + li { margin-top: 10px; }
.footer-col a,
.footer-col span {
  font-size: var(--site-body-sm);
  color: var(--site-ink-text-3);
  text-decoration: none;
  transition: color var(--site-dur-fast) var(--site-ease);
}
.footer-col a:hover { color: var(--site-ink-text-1); text-decoration: underline; text-underline-offset: 3px; }
.footer-brand__tagline { margin-top: 14px; font-size: var(--site-body-sm); line-height: 1.7; color: var(--site-ink-text-3); max-width: 40ch; }
.footer-features {
  margin-top: 22px;
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.footer-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--site-body-sm);
  line-height: 1.5;
  color: var(--site-ink-text-3);
}
.footer-features .icon {
  width: 18px;
  height: 18px;
  flex: none;
  color: var(--site-ink-text-2);
  margin-top: 1px;
}
.footer-features b { color: var(--site-ink-text-1); font-weight: 500; }
.footer-legal {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--site-ink-border);
  font-size: var(--site-body-xs);
  line-height: 1.7;
  color: var(--site-ink-text-3);
}
.footer-legal__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  margin: 0;
}
.footer-legal__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  flex-shrink: 0;
}
.footer-legal__item--wrap {
  white-space: normal;
  flex-shrink: 1;
}
.footer-legal__item:not(:last-child)::after {
  content: "";
  display: inline-block;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--site-ink-text-3);
  margin-left: 10px;
  opacity: 0.5;
  vertical-align: middle;
}
.footer-legal a { color: var(--site-ink-text-3); text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.footer-legal a:hover { color: var(--site-ink-text-1); text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 899px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 32px; }
}
@media (max-width: 599px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
}

/* ================= 微信二维码入口 ================= */
.footer-wechat-qr {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 112px;
}
.footer-wechat-qr__img {
  width: 100%;
  height: auto;
  display: block;
  background: #fff;
  border: 1px solid var(--site-ink-border);
  border-radius: var(--site-radius-md);
  padding: 4px;
  box-shadow: var(--site-shadow-sm);
}
.footer-wechat-qr__label {
  font-size: var(--site-body-xs);
  line-height: 1.5;
  color: var(--site-ink-text-3);
  text-align: center;
}

.sticky-cta__wechat { min-height: 44px; padding: 0 18px; }

/* ================= 微信二维码弹窗 ================= */
.qr-modal {
  position: fixed;
  inset: 0;
  z-index: var(--site-z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.qr-modal[hidden] { display: none; }
.qr-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 13, 31, 0.55);
  backdrop-filter: blur(4px);
}
.qr-modal__panel {
  position: relative;
  width: 100%;
  max-width: 340px;
  background: var(--site-surface);
  border-radius: var(--site-radius-lg);
  padding: 28px;
  text-align: center;
  box-shadow: var(--site-shadow-raised);
}
.qr-modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: var(--site-radius-md);
  background: transparent;
  color: var(--site-text-3);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}
.qr-modal__close:hover { background: var(--site-surface-2); color: var(--site-text-1); }
.qr-modal__title {
  margin: 0 0 18px;
  font-size: var(--site-body-md);
  font-weight: 600;
  color: var(--site-text-1);
}
.qr-modal__img {
  display: block;
  width: 100%;
  max-width: 260px;
  height: auto;
  margin: 0 auto;
  border-radius: var(--site-radius-md);
  border: 1px solid var(--site-border);
}
.qr-modal__hint {
  margin: 16px 0 0;
  font-size: var(--site-body-sm);
  line-height: 1.6;
  color: var(--site-text-2);
}

@media (max-width: 599px) {
  .qr-modal { padding: 16px; }
  .qr-modal__panel { padding: 22px; }
  .qr-modal__img { max-width: 220px; }
}

/* ================= 滚动常驻 CTA 条 ================= */
.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--site-z-sticky-cta);
  background: var(--site-surface);
  border-top: 1px solid var(--site-border);
  box-shadow: 0 -8px 24px rgba(16, 24, 40, 0.10);
  padding-bottom: env(safe-area-inset-bottom);
  transform: translateY(110%);
  transition: transform var(--site-dur-base) var(--site-ease);
}
.sticky-cta.is-shown { transform: translateY(0); }
.sticky-cta__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 64px;
  padding-block: 10px;
}
.sticky-cta__text { font-size: var(--site-body-sm); color: var(--site-text-2); min-width: 0; }
.sticky-cta__text b { display: block; color: var(--site-text-1); font-weight: 600; }
.sticky-cta__actions { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.sticky-cta__phone {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--site-body-sm);
  font-weight: 600;
  color: var(--site-text-1);
  text-decoration: none;
  font-family: var(--site-font-mono);
}
.sticky-cta__phone:hover { color: var(--site-accent); }
.sticky-cta .btn { min-height: 44px; padding: 0 18px; }
@media (max-width: 599px) {
  .sticky-cta__text { display: none; }
  .sticky-cta__actions { width: 100%; }
  .sticky-cta__actions .btn { flex: 1; }
}

/* 底部常驻 CTA 条出现时，给页脚留出等高空间，避免遮挡最后一行 */
html.has-sticky-cta .site-footer { padding-bottom: 104px; }