.page-contact {
  --contact-pad: clamp(56px, 9vw, 118px);
  --contact-panel: rgba(27, 74, 56, 0.55);
  background: var(--night);
  color: var(--score);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-block-start: clamp(20px, 4vw, 44px);
  padding-block-end: var(--contact-pad);
}

.page-contact .contact-hero-inner {
  position: relative;
}

.page-contact .contact-hero-media {
  border-radius: var(--r);
  overflow: hidden;
  border: 1px solid var(--grid);
}

.page-contact .contact-hero-media img {
  display: block;
  width: 100%;
  height: clamp(220px, 38vw, 430px);
  object-fit: cover;
}

.page-contact .contact-hero-copy {
  position: relative;
  z-index: 2;
  margin-top: clamp(-104px, -7vw, -44px);
  margin-inline: clamp(0px, 3vw, 36px);
  padding: clamp(24px, 4vw, 48px);
  border: 1px solid var(--grid);
  border-radius: var(--r);
  background:
    linear-gradient(160deg, rgba(11, 31, 23, 0.95), rgba(18, 51, 40, 0.94));
}

.page-contact .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-contact .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--grid);
}

.page-contact .breadcrumb-link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-contact .breadcrumb-link:hover {
  color: var(--turf);
  border-bottom-color: var(--turf);
}

.page-contact .breadcrumb-current {
  color: var(--score);
}

.page-contact .contact-hero h1 {
  margin: 14px 0 0;
  max-width: 20ch;
  font-family: var(--sans);
  font-size: clamp(30px, 6vw, 62px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--score);
}

.page-contact .contact-lede {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 邮箱焦点面板 ---------- */
.page-contact .contact-mail-panel {
  margin-top: clamp(28px, 5vw, 54px);
  padding: clamp(26px, 4.4vw, 48px);
  border: 1px solid var(--grid);
  border-radius: var(--r);
  text-align: center;
  background:
    radial-gradient(120% 150% at 8% 0%, rgba(46, 229, 157, 0.14), transparent 62%),
    var(--stands);
}

.page-contact .contact-mail-label {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .contact-mail-address {
  margin: 16px 0 0;
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(19px, 4.4vw, 46px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--volt);
  overflow-wrap: anywhere;
}

.page-contact .contact-mail-note {
  margin: 18px auto 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 合作方向 ---------- */
.page-contact .direction-layout {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .direction-item {
  border: 1px solid var(--grid);
  border-radius: var(--r);
  background: var(--board);
  overflow: hidden;
  transition: border-color 0.22s ease;
}

.page-contact .direction-item + .direction-item {
  margin-top: 14px;
}

.page-contact .direction-item[open] {
  border-color: rgba(46, 229, 157, 0.5);
}

.page-contact .direction-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 22px;
  cursor: pointer;
  list-style: none;
  font-family: var(--sans);
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 700;
  color: var(--score);
  transition: background 0.2s ease;
}

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

.page-contact .direction-item summary:hover {
  background: rgba(46, 229, 157, 0.07);
}

.page-contact .direction-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--mono);
  font-size: 22px;
  line-height: 1;
  color: var(--turf);
}

.page-contact .direction-item[open] summary::after {
  content: "−";
}

.page-contact .direction-body {
  padding: 0 22px 22px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .direction-body p {
  margin: 0;
}

.page-contact .direction-tail {
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .direction-tail a,
.page-contact .prose a,
.page-contact .support-block a,
.page-contact .reply-clock a {
  color: var(--turf);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 229, 157, 0.42);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-contact .direction-tail a:hover,
.page-contact .prose a:hover,
.page-contact .support-block a:hover,
.page-contact .reply-clock a:hover {
  color: var(--volt);
  border-bottom-color: var(--volt);
}

.page-contact .direction-figure {
  margin: 0;
}

.page-contact .direction-figure .media-frame {
  border-radius: var(--r);
  overflow: hidden;
  border: 1px solid var(--grid);
}

.page-contact .direction-figure .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .media-caption {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.65;
  letter-spacing: 0.03em;
  color: var(--muted);
}

/* ---------- 联系渠道 ---------- */
.page-contact .channel-grid {
  display: grid;
  gap: 16px;
}

.page-contact .channel-card {
  position: relative;
  padding: 28px 24px;
  border: 1px solid var(--grid);
  border-top: 3px solid var(--grid);
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(27, 74, 56, 0.62), rgba(11, 31, 23, 0.22));
  transition: border-top-color 0.22s ease, transform 0.22s ease, background 0.22s ease;
}

.page-contact .channel-card:hover {
  border-top-color: var(--turf);
  background: linear-gradient(180deg, rgba(27, 74, 56, 0.86), rgba(11, 31, 23, 0.3));
  transform: translateY(-3px);
}

.page-contact .channel-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--volt);
}

.page-contact .channel-card h3 {
  margin: 12px 0 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--score);
}

.page-contact .channel-value {
  margin: 12px 0 0;
  font-family: var(--mono);
  font-size: clamp(15px, 2.2vw, 19px);
  font-weight: 700;
  line-height: 1.42;
  color: var(--turf);
  overflow-wrap: anywhere;
}

.page-contact .channel-desc {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 咨询与勘误 ---------- */
.page-contact .support-grid {
  display: grid;
  gap: 16px;
}

.page-contact .support-block {
  padding: clamp(24px, 3.4vw, 38px);
  border: 1px solid var(--grid);
  border-radius: var(--r);
  background: rgba(18, 51, 40, 0.55);
}

.page-contact .support-block--ask {
  border-left: 3px solid var(--turf);
}

.page-contact .support-block--fix {
  border-left: 3px solid var(--ref);
}

.page-contact .support-block h3 {
  margin: 0 0 14px;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 700;
  color: var(--score);
}

.page-contact .support-block p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .support-block .support-tip {
  margin-bottom: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--grid);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--volt);
}

/* ---------- 回复时间与所需信息 ---------- */
.page-contact .reply-layout {
  display: grid;
  gap: clamp(30px, 4.5vw, 58px);
}

.page-contact .reply-big {
  margin: 12px 0 0;
  font-family: var(--mono);
  font-size: clamp(26px, 4.6vw, 46px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.16;
  color: var(--volt);
}

.page-contact .reply-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-contact .reply-meta span {
  padding: 6px 15px;
  border: 1px solid rgba(46, 229, 157, 0.45);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--turf);
}

.page-contact .reply-list h3 {
  margin: 0 0 18px;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 700;
  color: var(--score);
}

.page-contact .checklist {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .checklist li {
  position: relative;
  padding: 13px 0 13px 38px;
  border-bottom: 1px solid var(--grid);
  font-size: 16px;
  line-height: 1.62;
  color: var(--muted);
  transition: color 0.2s ease;
}

.page-contact .checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 18px;
  height: 18px;
  border: 1px solid var(--grid);
  border-radius: 4px;
  background: rgba(46, 229, 157, 0.08);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-contact .checklist li:hover {
  color: var(--score);
}

.page-contact .checklist li:hover::before {
  background: var(--turf);
  border-color: var(--turf);
}

.page-contact .reply-note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 底部稳定区 ---------- */
.page-contact .contact-base {
  padding-block: clamp(32px, 5vw, 56px);
  border-top: 1px solid var(--grid);
  background: var(--stands);
}

.page-contact .contact-base-inner {
  display: grid;
  gap: 18px;
}

.page-contact .base-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-contact .base-label {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .base-value {
  margin: 0;
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--score);
  overflow-wrap: anywhere;
}

.page-contact .base-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-base-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
    align-items: baseline;
  }

  .page-contact .base-note {
    grid-column: 1 / -1;
    padding-top: 4px;
  }
}

@media (min-width: 880px) {
  .page-contact .support-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .direction-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-contact .reply-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (max-width: 600px) {
  .page-contact .contact-hero-copy {
    margin-inline: 0;
    border-radius: var(--r);
  }

  .page-contact .contact-mail-panel {
    text-align: left;
  }

  .page-contact .channel-card {
    padding: 24px 20px;
  }
}