.page-contact {
  --pc-accent: var(--c-brand);
  color: var(--c-ink);
  font-family: var(--f-body);
}

.page-contact .breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-block: 16px 4px;
  font-family: var(--f-data);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-muted);
}

.page-contact .contact-hero {
  max-width: 1120px;
  padding-block: clamp(12px, 2.4vw, 28px) clamp(6px, 1.6vw, 14px);
}

.page-contact .contact-hero h1 {
  margin: 14px 0 20px;
  font-family: var(--f-display);
  font-size: clamp(38px, 7.2vw, 90px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.025em;
}

.page-contact .contact-hero .lead {
  max-width: 60ch;
  margin: 0;
  font-size: clamp(16px, 1.35vw, 19px);
  line-height: 1.8;
  color: rgba(243, 247, 255, .74);
}

/* --- 页首横幅 --- */
.page-contact .banner {
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--c-bg3);
}

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

/* --- 章节标题头 --- */
.page-contact .sec-head {
  max-width: 68ch;
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.page-contact .sec-head h2 {
  margin: 10px 0 12px;
  font-family: var(--f-display);
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.page-contact .sec-head__note {
  margin: 0;
  line-height: 1.8;
  color: rgba(243, 247, 255, .66);
  font-size: 15.5px;
}

/* --- 三列分流 --- */
.page-contact .channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: var(--c-line);
  border-radius: var(--r-xl);
  overflow: hidden;
}

.page-contact .channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(26px, 3vw, 42px);
  background: var(--c-bg2);
  transition: background 200ms ease;
}

.page-contact .channel:hover {
  background: var(--c-bg3);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(26px, 3vw, 42px);
  width: 52px;
  height: 4px;
  border-radius: 0 0 4px 4px;
  background: var(--pc-accent, var(--c-brand));
}

.page-contact .channel--service { --pc-accent: var(--c-brand); }
.page-contact .channel--media   { --pc-accent: var(--c-signal); }
.page-contact .channel--phone   { --pc-accent: var(--c-hi); }

.page-contact .channel__no {
  margin: 0;
  font-family: var(--f-data);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-muted);
}

.page-contact .channel__label {
  margin: 0;
  font-family: var(--f-display);
  font-size: clamp(32px, 4.6vw, 58px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
}

.page-contact .channel__desc {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(243, 247, 255, .68);
}

.page-contact .channel .copybtn {
  margin-top: auto;
  width: 100%;
  justify-content: space-between;
  text-align: left;
}

/* --- 双栏详情 --- */
.page-contact .lanes {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-contact .lane h2 {
  margin: 10px 0 16px;
  font-family: var(--f-display);
  font-size: clamp(24px, 2.8vw, 34px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.015em;
}

.page-contact .lane > p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(243, 247, 255, .74);
}

.page-contact .lane--signal {
  padding: clamp(24px, 3vw, 40px);
  border-radius: var(--r-xl);
  background: var(--c-bg2);
  box-shadow: inset 3px 0 0 var(--c-signal);
}

.page-contact .lane--signal > p {
  margin-bottom: 20px;
}

.page-contact .lane--signal .copybtn {
  width: 100%;
  justify-content: space-between;
  text-align: left;
}

.page-contact .disclosure__body > p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(243, 247, 255, .72);
}

.page-contact .disclosure__body > p:last-child {
  margin-bottom: 18px;
}

.page-contact .facts {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .facts li {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.7;
  color: rgba(243, 247, 255, .72);
}

.page-contact .facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .6em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--c-signal);
}

.page-contact .lane a {
  color: var(--c-brand);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

/* --- 回复节奏看板 --- */
.page-contact .board {
  display: grid;
  border-top: 1px solid var(--c-line);
}

.page-contact .board__row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .board__no {
  font-family: var(--f-data);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-hi);
}

.page-contact .board__k {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
}

.page-contact .board__v {
  grid-column: 2 / -1;
  font-family: var(--f-data);
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-brand);
  font-variant-numeric: tabular-nums;
}

/* --- 写信手卡 --- */
.page-contact .lanes--letter {
  align-items: start;
}

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

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 16px 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(243, 247, 255, .76);
  border-bottom: 1px dashed var(--c-line);
}

.page-contact .checklist__item:first-child {
  border-top: 1px dashed var(--c-line);
}

.page-contact .checklist__mark {
  width: 14px;
  height: 14px;
  margin-top: 7px;
  border-radius: 4px;
  background: var(--c-hi);
  box-shadow: 0 0 0 4px rgba(239, 255, 74, .1);
}

.page-contact .checklist__text strong {
  margin-right: 6px;
  color: var(--c-ink);
  font-weight: 700;
}

.page-contact .letter-pic {
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--c-bg3);
}

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

/* --- 备案与服务地区 --- */
.page-contact .record {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: var(--c-line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-contact .record__cell {
  background: var(--c-bg2);
  padding: clamp(22px, 2.6vw, 34px);
}

.page-contact .record__cell .plaque__label {
  margin: 0;
  color: var(--c-muted);
  font-family: var(--f-data);
  font-size: 12px;
  letter-spacing: .14em;
}

.page-contact .record__cell .plaque__value {
  margin: 10px 0 0;
  font-family: var(--f-data);
  font-size: clamp(16px, 1.6vw, 22px);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--c-ink);
  text-align: left;
  word-break: break-word;
}

.page-contact .backline {
  margin: clamp(22px, 3vw, 34px) 0 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(243, 247, 255, .7);
}

.page-contact .backline a {
  color: var(--c-brand);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.page-contact .copybtn.is-copied {
  box-shadow: 0 0 0 1px var(--c-brand);
}

/* --- 桌面与窄屏适配 --- */
@media (min-width: 860px) {
  .page-contact .channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .lanes {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }

  .page-contact .lanes--letter {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
  }
}

@media (min-width: 780px) {
  .page-contact .board__row {
    grid-template-columns: 64px minmax(0, 1fr) auto;
    gap: 24px;
    align-items: center;
    padding: 20px 0;
  }

  .page-contact .board__v {
    grid-column: auto;
    text-align: right;
  }
}

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

@media (max-width: 560px) {
  .page-contact .contact-hero h1 {
    font-size: clamp(32px, 10.5vw, 46px);
  }

  .page-contact .channel__label {
    font-size: clamp(30px, 9vw, 42px);
  }

  .page-contact .channel .copybtn,
  .page-contact .lane--signal .copybtn {
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 6px;
  }

  .page-contact .board__v {
    font-size: 13px;
  }
}

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