.page-contact {
  padding-bottom: clamp(40px, 7vw, 96px);
}

.page-contact .breadcrumbs {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  padding: clamp(22px, 3.6vw, 44px) 0 clamp(26px, 4vw, 48px);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.page-contact .contact-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(38px, 7.2vw, 76px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--white);
  transform: skewX(-3deg);
  transform-origin: left center;
}

.page-contact .contact-hero__title em {
  font-style: normal;
  color: var(--cyan);
}

.page-contact .contact-hero__lead {
  margin: 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.78;
  color: var(--steel);
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-contact .contact-hero__lead {
    padding-bottom: 8px;
  }
}

/* ---------- 顶部提示条 ---------- */

.page-contact .contact-alert {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 20px;
  border: 1px solid rgba(23, 224, 200, 0.42);
  border-radius: var(--radius-md);
  background: linear-gradient(115deg, rgba(23, 224, 200, 0.16), rgba(23, 224, 200, 0.02) 72%);
}

.page-contact .contact-alert__dot {
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(23, 224, 200, 0.16);
}

.page-contact .contact-alert__text {
  margin: 0;
  font-size: clamp(13.5px, 1.4vw, 15px);
  line-height: 1.68;
  color: var(--white);
}

/* ---------- 左右分栏 ---------- */

.page-contact .contact-split {
  display: grid;
  gap: clamp(22px, 3.2vw, 38px);
  margin-top: clamp(20px, 3vw, 32px);
}

@media (min-width: 960px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: start;
  }
}

.page-contact .contact-visual {
  position: relative;
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--panel);
}

.page-contact .contact-visual__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: 0.88;
}

.page-contact .contact-visual__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 28px 18px 14px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--steel);
  background: linear-gradient(to top, rgba(6, 26, 22, 0.94), rgba(6, 26, 22, 0));
}

/* ---------- 渠道卡片 ---------- */

.page-contact .channel-list {
  display: grid;
  gap: 13px;
}

.page-contact .channel-card {
  padding: clamp(17px, 2.2vw, 22px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.page-contact .channel-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: var(--shadow-lift);
}

.page-contact .channel-card__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-contact .channel-card__tag::before {
  content: "";
  width: 14px;
  height: 2px;
  border-radius: var(--pill);
  background: var(--orange);
}

.page-contact .channel-card__value {
  margin: 9px 0 7px;
  font-family: var(--font-data);
  font-size: clamp(16px, 2.1vw, 20px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__use {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

.page-contact .channel-card--accent {
  border-color: rgba(255, 107, 44, 0.4);
  background: linear-gradient(135deg, rgba(255, 107, 44, 0.15), rgba(11, 42, 34, 1) 68%);
}

.page-contact .channel-card--accent .channel-card__tag {
  color: var(--orange-soft);
}

.page-contact .channel-card--accent .channel-card__tag::before {
  background: var(--cyan);
}

/* ---------- 反馈面板 ---------- */

.page-contact .feedback-panel {
  padding: clamp(20px, 2.8vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(170deg, var(--panel-2), var(--panel) 62%);
}

.page-contact .feedback-panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 25px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .feedback-panel__intro {
  margin: 9px 0 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

.page-contact .feedback-item {
  border-top: 1px solid var(--line);
}

.page-contact .feedback-item summary {
  position: relative;
  padding: 15px 34px 15px 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
  cursor: pointer;
  list-style: none;
  transition: color 0.2s ease;
}

.page-contact .feedback-item summary::-webkit-details-marker {
  display: none;
}

.page-contact .feedback-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-data);
  font-size: 19px;
  font-weight: 700;
  color: var(--cyan);
}

.page-contact .feedback-item[open] summary::after {
  content: "\2013";
}

.page-contact .feedback-item summary:hover {
  color: var(--cyan-soft);
}

.page-contact .feedback-item summary:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .feedback-item p {
  margin: 0 0 17px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-contact .feedback-item p a,
.page-contact .site-facts__note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .feedback-item p a:hover,
.page-contact .site-facts__note a:hover {
  color: var(--cyan-soft);
}

/* ---------- 合作卡片 ---------- */

.page-contact .coop-grid {
  display: grid;
  gap: clamp(15px, 2.2vw, 22px);
  margin-top: clamp(18px, 2.6vw, 28px);
}

@media (min-width: 780px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .coop-card {
  display: flex;
  flex-direction: column;
  gap: 11px;
  padding: clamp(19px, 2.5vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, var(--panel-2), var(--panel) 70%);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.page-contact .coop-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
}

.page-contact .coop-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.1vw, 22px);
  font-weight: 900;
  color: var(--white);
}

.page-contact .coop-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--steel);
}

.page-contact .coop-card__meta {
  margin: auto 0 0;
  padding-top: 13px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--orange-soft);
}

/* ---------- 回复节奏 ---------- */

.page-contact .rhythm {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  margin-top: clamp(18px, 2.6vw, 28px);
}

@media (min-width: 940px) {
  .page-contact .rhythm {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    align-items: center;
  }
}

.page-contact .rhythm__media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--panel);
}

.page-contact .rhythm__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  opacity: 0.86;
}

.page-contact .rhythm__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .rhythm__step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 15px;
  align-items: start;
}

.page-contact .rhythm__num {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 107, 44, 0.42);
  border-radius: var(--pill);
  font-family: var(--font-data);
  font-size: 13.5px;
  font-weight: 700;
  color: var(--orange);
}

.page-contact .rhythm__body h3 {
  margin: 7px 0 6px;
  font-size: clamp(16.5px, 1.8vw, 18.5px);
  font-weight: 700;
  color: var(--white);
}

.page-contact .rhythm__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--steel);
}

/* ---------- 站点信息收尾 ---------- */

.page-contact .site-facts {
  padding-top: clamp(20px, 3vw, 32px);
  border-top: 1px solid var(--line);
}

.page-contact .site-facts__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 23px);
  font-weight: 900;
  color: var(--white);
}

.page-contact .site-facts__list {
  margin: 0;
  display: grid;
  gap: 0 30px;
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 720px) {
  .page-contact .site-facts__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .site-facts__list > div {
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .site-facts__list dt {
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-contact .site-facts__list dd {
  margin: 5px 0 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .site-facts__note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 动效偏好 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .coop-card {
    transition: none;
  }

  .page-contact .channel-card:hover,
  .page-contact .coop-card:hover {
    transform: none;
  }
}