.page-contact {
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.75;
}

.page-contact .breadcrumbs {
  padding: 14px 0 6px;
}

/* ---------- 深色联系信息板 ---------- */
.page-contact .contact-board {
  position: relative;
  overflow: hidden;
  background-color: var(--charcoal);
  color: var(--paper);
  padding: 30px 0 88px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), 0 100%);
}

.page-contact .contact-board::before {
  content: "";
  position: absolute;
  top: -84px;
  right: -64px;
  width: 232px;
  height: 232px;
  background-color: var(--orange);
  transform: rotate(16deg);
  opacity: 0.9;
}

.page-contact .contact-board::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 247, 236, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 247, 236, 0.07) 1px, transparent 1px);
  background-size: 52px 52px;
  pointer-events: none;
}

.page-contact .contact-board__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
}

.page-contact .contact-board__intro {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .contact-board .eyebrow {
  color: var(--orange);
  margin: 0;
}

.page-contact .contact-board .display-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.4vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .contact-board .lede {
  margin: 0;
  max-width: 42ch;
  font-size: clamp(16px, 2.4vw, 19px);
  color: rgba(255, 247, 236, 0.86);
}

.page-contact .contact-board__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.page-contact .contact-board .btn--ghost {
  color: var(--paper);
  border-color: rgba(255, 247, 236, 0.55);
}

.page-contact .contact-board__card {
  position: relative;
  align-self: start;
  border: 2px solid rgba(255, 247, 236, 0.38);
  background-color: rgba(255, 247, 236, 0.07);
  padding: 22px 20px 24px;
}

.page-contact .contact-board__card::after {
  content: "";
  position: absolute;
  top: -2px;
  right: -2px;
  width: 30px;
  height: 30px;
  background-color: var(--orange);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
}

.page-contact .contact-board__label {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lemon);
}

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

.page-contact .contact-board__list li {
  display: grid;
  gap: 3px;
  padding-bottom: 13px;
  margin-bottom: 13px;
  border-bottom: 1px dashed rgba(255, 247, 236, 0.24);
}

.page-contact .contact-board__list li:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-contact .contact-board__k {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(255, 247, 236, 0.66);
}

.page-contact .contact-board__v {
  font-size: 15px;
  color: var(--paper);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .contact-board__v.num {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-contact .contact-board__tip {
  margin: 18px 0 0;
  padding-left: 12px;
  border-left: 3px solid var(--orange);
  font-size: 14px;
  color: rgba(255, 247, 236, 0.8);
}

/* ---------- 章节通用头部 ---------- */
.page-contact .channels,
.page-contact .prepare,
.page-contact .correction,
.page-contact .timing,
.page-contact .contact-info {
  padding: 54px 0;
}

.page-contact .sec-head {
  display: grid;
  gap: 10px;
  max-width: 58ch;
  margin-bottom: 30px;
}

.page-contact .sec-head .eyebrow {
  margin: 0;
  color: var(--mist);
}

.page-contact .sec-head .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 4.6vw, 38px);
  line-height: 1.22;
  color: var(--ink);
}

.page-contact .sec-head__note {
  margin: 0;
  font-size: 15px;
  color: var(--mist);
}

/* ---------- 渠道选择 ---------- */
.page-contact .channels__grid {
  display: grid;
  gap: 20px;
}

.page-contact .channel-card {
  position: relative;
  background-color: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-card);
  padding: 22px 20px 24px;
  transition: transform 160ms var(--ease), box-shadow 160ms var(--ease);
}

.page-contact .channel-card--mail {
  background-color: var(--paper-2);
}

.page-contact .channel-card--mail::after {
  content: "";
  position: absolute;
  top: -2px;
  right: -2px;
  width: 26px;
  height: 26px;
  background-color: var(--orange);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
}

.page-contact .channel-card h3 {
  margin: 12px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 3vw, 24px);
  line-height: 1.3;
  color: var(--ink);
}

.page-contact .channel-card p {
  margin: 0;
  font-size: 15.5px;
  color: var(--ink);
}

.page-contact .channel-card ul {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
  font-size: 15px;
  color: var(--ink);
}

.page-contact .channel-card li {
  position: relative;
  padding-left: 16px;
}

.page-contact .channel-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 7px;
  height: 7px;
  background-color: var(--orange);
}

.page-contact .channel-card__link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 准备清单 ---------- */
.page-contact .prepare {
  background-color: var(--paper-2);
  clip-path: polygon(0 26px, 100% 0, 100% 100%, 0 100%);
  padding-top: 78px;
}

.page-contact .prepare__grid {
  display: grid;
  gap: 28px;
}

.page-contact .check-list {
  list-style: none;
  counter-reset: pc-step;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-contact .check-list > li {
  counter-increment: pc-step;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--paper-line);
}

.page-contact .check-list > li:first-child {
  border-top: 1px solid var(--paper-line);
}

.page-contact .check-list > li::before {
  content: counter(pc-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--orange);
}

.page-contact .check-list__body strong {
  display: block;
  font-size: 16px;
  color: var(--ink);
}

.page-contact .check-list__body p {
  margin: 4px 0 0;
  font-size: 15px;
  color: var(--mist);
}

/* ---------- 图片框 ---------- */
.page-contact .pc-shot {
  margin: 0;
  border: 2px solid var(--ink);
  background-color: var(--paper);
  box-shadow: var(--shadow-card);
}

.page-contact .pc-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .pc-shot figcaption {
  padding: 10px 12px;
  border-top: 1px solid var(--paper-line);
  background-color: var(--paper);
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 纠错模板 ---------- */
.page-contact .correction__grid {
  display: grid;
  gap: 28px;
}

.page-contact .tpl {
  margin: 0;
  padding: 18px 16px;
  background-color: var(--charcoal);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 2;
  border-left: 6px solid var(--orange);
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: break-word;
}

.page-contact .correction__sub {
  margin: 26px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink);
}

.page-contact .cert-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .cert-list li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 10px;
  font-size: 15px;
  color: var(--ink);
}

.page-contact .cert-list li::before {
  content: "";
  width: 10px;
  height: 10px;
  margin-top: 0.6em;
  background-color: var(--green);
}

/* ---------- 处理节奏 ---------- */
.page-contact .timing {
  background-color: var(--paper-2);
}

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

.page-contact .steps > li {
  position: relative;
  padding: 0 0 28px 28px;
  border-left: 2px solid var(--paper-line);
}

.page-contact .steps > li:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .steps > li::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 6px;
  width: 14px;
  height: 14px;
  background-color: var(--paper-2);
  border: 2px solid var(--orange);
  transform: rotate(45deg);
}

.page-contact .steps strong {
  display: block;
  font-size: 16.5px;
  color: var(--ink);
}

.page-contact .steps p {
  margin: 5px 0 0;
  font-size: 15px;
  color: var(--mist);
}

/* ---------- 联系信息与备案 ---------- */
.page-contact .contact-info {
  padding-bottom: 76px;
}

.page-contact .info-card {
  border: 2px solid var(--ink);
  background-color: var(--paper);
  box-shadow: var(--shadow-card);
  padding: 24px 20px 26px;
}

.page-contact .info-rows {
  margin: 0;
  display: grid;
}

.page-contact .info-row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--paper-line);
}

.page-contact .info-row:first-child {
  padding-top: 0;
}

.page-contact .info-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .info-row__k {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-contact .info-row__v {
  margin: 0;
  font-size: 16px;
  color: var(--ink);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .info-row__v--mono {
  font-family: var(--font-mono);
  font-weight: 700;
}

.page-contact .info-note {
  margin: 22px 0 0;
  padding: 14px 16px;
  border-left: 4px solid var(--orange);
  background-color: var(--paper-2);
  font-size: 14.5px;
  color: var(--ink);
}

.page-contact .info-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 22px;
}

.page-contact .info-links a {
  font-size: 14.5px;
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 悬停效果仅对指针设备生效 ---------- */
@media (hover: hover) {
  .page-contact .channel-card:hover {
    transform: translateY(-4px);
    box-shadow: 9px 11px 0 rgba(43, 33, 24, 0.2);
  }

  .page-contact .pc-shot:hover {
    box-shadow: 9px 9px 0 rgba(43, 33, 24, 0.22);
  }
}

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

  .page-contact .channel-card--mail {
    grid-column: 1 / -1;
  }

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

/* ---------- 桌面 ---------- */
@media (min-width: 1020px) {
  .page-contact .contact-board {
    padding: 54px 0 108px;
  }

  .page-contact .contact-board__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-contact .channels,
  .page-contact .prepare,
  .page-contact .correction,
  .page-contact .timing,
  .page-contact .contact-info {
    padding: 84px 0;
  }

  .page-contact .prepare {
    padding-top: 100px;
  }

  .page-contact .channels__grid {
    grid-template-columns: 1.55fr 1fr 1fr;
    align-items: start;
  }

  .page-contact .channel-card--mail {
    grid-column: auto;
  }

  .page-contact .channel-card--phone {
    margin-top: 26px;
  }

  .page-contact .channel-card--note {
    margin-top: 54px;
  }

  .page-contact .prepare__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.78fr);
    gap: 46px;
    align-items: start;
  }

  .page-contact .correction__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 46px;
    align-items: start;
  }

  .page-contact .info-card {
    padding: 30px 34px 32px;
  }

  .page-contact .info-row {
    grid-template-columns: 148px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }
}

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

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