.page-contact {
  background: var(--ink-void);
  color: var(--chalk);
  padding-bottom: 0;
}

/* ---------- 顶部与首屏 ---------- */

.page-contact .contact-top {
  padding-top: 40px;
}

.page-contact .contact-top .breadcrumb__list {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-contact .contact-hero {
  display: grid;
  gap: 28px;
  padding: 24px 0 40px;
}

.page-contact .contact-hero__intro .eyebrow {
  color: var(--signal-cyan);
}

.page-contact .contact-hero__intro h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.3rem, 5.6vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
}

.page-contact .contact-hero__lede {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--slate);
  max-width: 36ch;
  margin: 24px 0 0;
}

.page-contact .contact-hero__media {
  margin: 0;
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--grid-line);
  background: var(--pitch-900);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: 1fr 1.05fr;
    align-items: end;
    gap: 56px;
    padding: 32px 0 80px;
  }
}

/* ---------- 渠道卡片与右侧面板 ---------- */

.page-contact .contact-layout {
  display: grid;
  gap: 24px;
  padding-bottom: 64px;
}

@media (min-width: 1000px) {
  .page-contact .contact-layout {
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: start;
    padding-bottom: 96px;
  }
}

.page-contact .channel-card {
  background: var(--paper);
  color: var(--ink-void);
  padding: 32px 24px;
  border: 1px solid var(--grid-line);
  box-shadow: var(--shadow-paper);
  position: relative;
}

@media (min-width: 900px) {
  .page-contact .channel-card {
    padding: 56px 48px;
    transform: rotate(-0.35deg);
  }
}

.page-contact .channel-card .paper-panel__label {
  color: var(--cyan-deep);
}

.page-contact .channel-card h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--pitch-900);
  margin: 12px 0 24px;
}

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

.page-contact .channel-item {
  border-top: 1px solid var(--grid-line);
  padding: 22px 0;
}

.page-contact .channel-item__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.page-contact .channel-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--pitch-900);
  color: var(--signal-cyan);
  padding: 4px 8px;
  line-height: 1;
}

.page-contact .channel-item h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 17px;
  margin: 0;
  color: var(--pitch-900);
}

.page-contact .channel-item p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate-deep);
  margin: 0 0 12px;
}

.page-contact .channel-link {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  word-break: break-all;
}

.page-contact .channel-link:hover,
.page-contact .channel-link:focus-visible {
  color: var(--amber-deep);
}

.page-contact .channel-address {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--pitch-900);
  background: var(--grid-line);
  border-left: 3px solid var(--cyan-deep);
  padding: 10px 12px;
  margin: 6px 0 0;
}

.page-contact .channel-note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate-deep);
  padding-top: 16px;
  margin-top: 24px;
  border-top: 1px dashed var(--slate-deep);
}

/* 右侧墨绿面板 */
.page-contact .contact-side {
  background: var(--pitch-900);
  border: 1px solid var(--grid-line);
  padding: 32px 24px;
  color: var(--chalk);
}

@media (min-width: 900px) {
  .page-contact .contact-side {
    padding: 48px 40px;
  }
}

.page-contact .contact-side__block + .contact-side__block {
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--grid-line);
}

.page-contact .contact-side .eyebrow {
  color: var(--signal-cyan);
}

.page-contact .contact-side__block h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 2.6vw, 2rem);
  letter-spacing: -0.01em;
  line-height: 1.15;
  color: var(--chalk);
  margin: 10px 0 16px;
}

.page-contact .contact-side__block p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
  margin: 0 0 16px;
}

.page-contact .contact-side__block p:last-child {
  margin-bottom: 0;
}

.page-contact .side-panel__media {
  margin: 0 0 20px;
  aspect-ratio: 1 / 1;
  max-height: 260px;
  overflow: hidden;
  border: 1px solid var(--grid-line);
}

.page-contact .side-panel__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.02);
}

/* 自查清单 */
.page-contact .checklist {
  list-style: none;
  margin: 0 0 0;
  padding: 0;
}

.page-contact .checklist li {
  border-top: 1px solid var(--grid-line);
}

.page-contact .checklist label {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 0;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.65;
  color: var(--chalk);
}

.page-contact .checklist input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  flex: none;
  margin: 3px 0 0;
  border: 1.5px solid var(--slate);
  background: transparent;
  position: relative;
  cursor: pointer;
  border-radius: 0;
  transition: background-color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-contact .checklist input[type="checkbox"]:checked {
  background: var(--signal-cyan);
  border-color: var(--signal-cyan);
}

.page-contact .checklist input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 11px;
  border: solid var(--pitch-900);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-contact .checklist input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--signal-cyan);
  outline-offset: 2px;
}

.page-contact .checklist strong {
  color: var(--signal-cyan);
  font-weight: 600;
  margin-right: 2px;
}

.page-contact .checklist-note {
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--slate);
  font-style: italic;
  margin-top: 14px;
}

.page-contact .contact-side__block .btn--paper {
  margin-top: 8px;
}

/* ---------- 合作与素材 ---------- */

.page-contact .partner-band {
  background: var(--pitch-900);
  border-top: 1px solid var(--grid-line);
  border-bottom: 1px solid var(--grid-line);
  padding: 64px 0;
}

@media (min-width: 900px) {
  .page-contact .partner-band {
    padding: 96px 0;
  }
}

.page-contact .partner-band__head {
  max-width: 620px;
  margin-bottom: 32px;
}

.page-contact .partner-band .eyebrow {
  color: var(--signal-cyan);
}

.page-contact .partner-band__head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 3.4vw, 3rem);
  letter-spacing: -0.02em;
  line-height: 1.08;
  color: var(--chalk);
  margin: 12px 0 0;
}

.page-contact .partner-band__body > p:first-child {
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
  max-width: 62ch;
  margin: 0 0 28px;
}

.page-contact .partner-steps {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 0;
}

@media (min-width: 768px) {
  .page-contact .partner-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}

.page-contact .partner-steps li {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 18px 0;
  border-top: 1px solid var(--grid-line);
}

.page-contact .partner-steps__num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--signal-cyan);
  flex: none;
  padding-top: 2px;
  letter-spacing: 0.02em;
}

.page-contact .partner-steps h3 {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  color: var(--chalk);
  margin: 0 0 6px;
}

.page-contact .partner-steps p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--slate);
  margin: 0;
}

.page-contact .partner-band__contact {
  font-size: 14px;
  line-height: 1.7;
  color: var(--chalk);
  background: rgba(79, 240, 192, 0.06);
  border-left: 3px solid var(--signal-cyan);
  padding: 14px 18px;
  margin: 0;
  max-width: 62ch;
}

.page-contact .partner-band__contact a {
  color: var(--signal-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  word-break: break-all;
}

/* ---------- 地址与备案 ---------- */

.page-contact .info-band {
  padding: 56px 0 0;
}

@media (min-width: 900px) {
  .page-contact .info-band {
    padding: 88px 0 0;
  }
}

.page-contact .info-band__grid {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--grid-line);
  background: var(--pitch-900);
}

@media (min-width: 600px) {
  .page-contact .info-band__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-contact .info-band__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-contact .info-band__item {
  padding: 22px 20px;
  border-bottom: 1px solid var(--grid-line);
}

@media (min-width: 600px) {
  .page-contact .info-band__item:nth-child(2n) {
    border-right: none;
  }
}

.page-contact .info-band__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 8px;
}

.page-contact .info-band__value {
  font-size: 15px;
  line-height: 1.5;
  color: var(--chalk);
  margin: 0;
  word-break: break-word;
}

.page-contact .info-band__value.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

@media (min-width: 600px) {
  .page-contact .info-band__item:nth-last-child(-n + 2) {
    border-bottom: none;
  }
}

@media (min-width: 1000px) {
  .page-contact .info-band__item {
    border-bottom: none;
    border-right: 1px solid var(--grid-line);
  }
  .page-contact .info-band__item:nth-child(4n) {
    border-right: none;
  }
}

.page-contact .info-band__note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
  margin: 24px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--grid-line);
}

.page-contact .info-band__note a {
  color: var(--signal-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 收口 ---------- */

.page-contact .closing-note {
  padding: 40px 0 96px;
}

@media (min-width: 900px) {
  .page-contact .closing-note {
    padding: 56px 0 160px;
  }
}

.page-contact .closing-note p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
  margin: 0;
  max-width: 64ch;
}

.page-contact .closing-note a {
  color: var(--signal-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}