.page-contact {
  --pc-max: 1180px;
  --pc-pad: 20px;
  --pc-line: 1px solid var(--grid-300);
  background: var(--paper-50);
  color: var(--ink-900);
}

.page-contact .pc-wrap {
  max-width: var(--pc-max);
  margin: 0 auto;
  padding: 0 var(--pc-pad);
}

/* 面包屑 */
.page-contact .crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-size: 14px;
  color: var(--ink-700);
}
.page-contact .crumbs a {
  color: var(--ice-deep);
  text-decoration: none;
}
.page-contact .crumbs a:hover {
  text-decoration: underline;
}
.page-contact .crumbs__sep {
  color: var(--grid-300);
}

/* 首屏 */
.page-contact .contact-intro {
  padding: 26px 0 26px;
}
.page-contact .contact-intro__kicker {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--field-green);
}
.page-contact .contact-intro h1 {
  margin: 0 0 16px;
  max-width: 20ch;
  font-size: clamp(2.1rem, 5.2vw, 3.6rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
}
.page-contact .contact-intro__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-700);
}

/* 氛围图 */
.page-contact .contact-hero {
  padding-bottom: 34px;
}
.page-contact .contact-hero__fig {
  margin: 0;
  border: var(--line-ink);
  box-shadow: var(--shadow-hard-lg);
  background: var(--paper-200);
}

/* 联系主区 */
.page-contact .contact-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding-bottom: 44px;
}

.page-contact .contact-card {
  position: relative;
  padding: 24px 20px 20px;
  background: var(--paper-200);
  border: var(--line-ink);
  box-shadow: var(--shadow-hard-lg);
}
.page-contact .contact-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 8px;
  background: var(--field-green);
}
.page-contact .contact-card__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 14px;
  margin: 6px 0 18px;
}
.page-contact .contact-card__title {
  margin: 0;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -.01em;
}
.page-contact .contact-card__tag {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink-700);
}
.page-contact .contact-rows {
  margin: 0;
}
.page-contact .contact-row {
  padding: 14px 0;
  border-top: var(--pc-line);
}
.page-contact .contact-row__label {
  margin: 0 0 7px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-700);
}
.page-contact .contact-row__val {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
}
.page-contact .contact-row__text {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink-900);
  word-break: break-word;
  text-decoration: none;
}
.page-contact .contact-row__text--tel {
  color: var(--ice-deep);
}
.page-contact .contact-row__text--addr {
  font-size: 14px;
}
.page-contact .copy-fb {
  min-width: 4.5em;
  font-size: 13px;
  font-weight: 700;
  color: var(--field-green);
}
.page-contact .contact-card__foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: var(--pc-line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-700);
}

/* 通道网格 */
.page-contact .chan-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}
.page-contact .chan {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 18px 16px 16px;
  background: var(--paper-50);
  border: 2px solid var(--ink-900);
  box-shadow: var(--shadow-hard);
  transition: transform .1s var(--ease), box-shadow .1s var(--ease);
}
.page-contact .chan:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-hard-lg);
}
.page-contact .chan__mark {
  width: 16px;
  height: 16px;
  background: var(--ink-900);
}
.page-contact .chan--green .chan__mark { background: var(--field-green); }
.page-contact .chan--orange .chan__mark { background: var(--sprint-orange); }
.page-contact .chan--ice .chan__mark { background: var(--ice-blue); }
.page-contact .chan__title {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -.01em;
}
.page-contact .chan__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-700);
}
.page-contact .chan__desc a,
.page-contact .coop__item a,
.page-contact .fix-step__body a {
  color: var(--ice-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-contact .chan__list {
  display: grid;
  gap: 7px;
  margin: 2px 0 0;
  padding: 0;
  list-style: none;
}
.page-contact .chan__list li {
  position: relative;
  padding-left: 15px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-700);
}
.page-contact .chan__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--grid-300);
}
.page-contact .chan__tag {
  margin: auto 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--grid-300);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-700);
}

/* 章节头 */
.page-contact .pc-sec {
  margin-bottom: 20px;
  padding-top: 14px;
  border-top: 2px solid var(--ink-900);
}
.page-contact .pc-sec__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--field-green);
}
.page-contact .pc-sec h2 {
  margin: 0 0 8px;
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -.02em;
}
.page-contact .pc-sec__meta {
  margin: 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-700);
}

/* 回复节奏 */
.page-contact .reply {
  padding: 36px 0 40px;
  border-top: var(--pc-line);
}
.page-contact .beat-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}
.page-contact .beat {
  padding: 4px 0 4px 16px;
  border-left: 4px solid var(--grid-300);
}
.page-contact .beat--on {
  border-left-color: var(--field-green);
}
.page-contact .beat__time {
  display: block;
  margin-bottom: 7px;
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink-900);
}
.page-contact .beat--on .beat__time {
  color: var(--field-green);
}
.page-contact .beat h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
}
.page-contact .beat p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-700);
}

/* 合作发起 */
.page-contact .coop {
  padding: 36px 0 40px;
  border-top: var(--pc-line);
}
.page-contact .coop__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}
.page-contact .coop__item {
  margin-bottom: 16px;
  padding-left: 14px;
  border-left: 3px solid var(--field-green);
}
.page-contact .coop__k {
  display: block;
  margin-bottom: 5px;
  font-size: 16px;
  font-weight: 800;
}
.page-contact .coop__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-700);
}
.page-contact .coop__note {
  margin: 20px 0 0;
  padding: 14px 16px;
  background: var(--green-tint);
  border-left: 4px solid var(--green-deep);
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-900);
}
.page-contact .coop__media {
  margin: 0;
  aspect-ratio: 4 / 3;
  border: var(--line-ink);
  box-shadow: var(--shadow-hard);
}

/* 纠错步骤 */
.page-contact .fix {
  padding: 36px 0 48px;
  border-top: var(--pc-line);
}
.page-contact .fix-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .fix-step {
  display: flex;
  gap: 14px;
  padding: 16px;
  background: var(--paper-200);
  border: var(--line-ink);
}
.page-contact .fix-step__num {
  flex: 0 0 auto;
  align-self: flex-start;
  padding: 4px 7px;
  background: var(--sprint-orange);
  color: var(--ink-900);
  font-size: 14px;
  font-weight: 800;
  line-height: 1;
}
.page-contact .fix-step__body h3 {
  margin: 2px 0 6px;
  font-size: 16px;
  font-weight: 800;
}
.page-contact .fix-step__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-700);
}

/* 备案信息带 */
.page-contact .reg {
  background: var(--ink-900);
  color: var(--paper-50);
}
.page-contact .reg__inner {
  max-width: var(--pc-max);
  margin: 0 auto;
  padding: 36px var(--pc-pad) 44px;
}
.page-contact .reg h2 {
  margin: 0 0 8px;
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--paper-50);
}
.page-contact .reg__sub {
  margin: 0 0 24px;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--grid-300);
}
.page-contact .reg__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid rgba(199, 192, 177, .32);
}
.page-contact .reg__item {
  display: grid;
  gap: 7px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(199, 192, 177, .32);
}
.page-contact .reg__k {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--grid-300);
}
.page-contact .reg__v {
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper-50);
  word-break: break-word;
}
.page-contact .reg__act {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.page-contact .reg .copy-fb {
  min-width: 4.5em;
  font-size: 13px;
  font-weight: 700;
  color: var(--sprint-orange);
}

/* 窄屏与宽屏适配 */
@media (min-width: 620px) {
  .page-contact .chan-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .contact-card {
    padding: 26px 24px 22px;
  }
}

@media (min-width: 760px) {
  .page-contact .beat-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .fix-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .reg__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 34px;
  }
  .page-contact .contact-intro {
    padding: 34px 0 30px;
  }
}

@media (min-width: 940px) {
  .page-contact {
    --pc-pad: 32px;
  }
  .page-contact .contact-main {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 28px;
  }
  .page-contact .coop__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 32px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .chan {
    transition: none;
  }
  .page-contact .chan:hover {
    transform: none;
    box-shadow: var(--shadow-hard);
  }
}