.page-contact {
  --pc-tint-green: rgba(47, 191, 113, 0.14);
  --pc-tint-alert: rgba(255, 122, 26, 0.14);
  --pc-tint-device: rgba(79, 163, 255, 0.14);
}

/* ---------- 顶部节奏提示带 ---------- */
.page-contact .contact-pulse {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.9rem;
  margin-top: 1.5rem;
  padding: 0.85rem 1.15rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--green);
  border-radius: var(--radius-lg);
  background: linear-gradient(100deg, var(--pc-tint-green), rgba(47, 191, 113, 0));
}

.page-contact .contact-pulse__label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green-line);
  white-space: nowrap;
}

.page-contact .contact-pulse__text {
  margin: 0;
  flex: 1 1 16rem;
  font-size: 0.94rem;
  line-height: 1.65;
  color: var(--white);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.75rem);
  align-items: end;
}

.page-contact .contact-hero__copy .eyebrow {
  margin-bottom: 0.85rem;
}

.page-contact .contact-hero__hint {
  margin: 1.25rem 0 0;
  padding-left: 1rem;
  border-left: 2px solid var(--concrete);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--mist);
  max-width: 46ch;
}

.page-contact .contact-hero__media {
  margin: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

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

.page-contact .media-frame__caption {
  display: block;
  padding: 0.7rem 1rem 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 渠道 / 要点 左右分置 ---------- */
.page-contact .contact-split {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-contact .contact-channels .section-title,
.page-contact .contact-prepare .section-title {
  margin-bottom: 0.6rem;
}

.page-contact .contact-channels > .note,
.page-contact .contact-prepare > .note {
  margin: 0 0 1.5rem;
  display: block;
  max-width: 40ch;
}

.page-contact .contact-channel {
  display: block;
  margin-bottom: 0.9rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--green);
  border-radius: var(--radius-lg);
  background: var(--ink-2);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .contact-channel--alert {
  border-left-color: var(--orange);
}

.page-contact .contact-channel--device {
  border-left-color: var(--blue);
}

.page-contact .contact-channel--green {
  border-left-color: var(--green);
}

.page-contact .contact-channel:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}

.page-contact .contact-channel[open] {
  border-color: var(--green-line);
}

.page-contact .contact-channel__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
  padding: 1.05rem 1.15rem;
  cursor: pointer;
  list-style: none;
}

.page-contact .contact-channel__summary::-webkit-details-marker {
  display: none;
}

.page-contact .contact-channel__summary:focus-visible {
  outline: 2px solid var(--green-line);
  outline-offset: -2px;
}

.page-contact .contact-channel__idx {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--concrete);
}

.page-contact .contact-channel__name {
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.01em;
}

.page-contact .contact-channel__body {
  padding: 0 1.15rem 1.25rem;
  border-top: 1px dashed var(--line);
}

.page-contact .contact-channel__body p {
  margin: 1rem 0 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--white);
}

.page-contact .contact-channel__list {
  margin: 0.85rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.page-contact .contact-channel__list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .contact-channel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--concrete);
}

.page-contact .contact-channel__more {
  margin-top: 1rem;
}

.page-contact .contact-channel__more a {
  font-size: 0.9rem;
  color: var(--green-line);
  text-decoration: none;
  border-bottom: 1px solid rgba(123, 224, 168, 0.4);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .contact-channel__more a:hover,
.page-contact .contact-channel__more a:focus-visible {
  color: var(--white);
  border-color: var(--white);
}

/* ---------- 邮件要点清单 ---------- */
.page-contact .contact-prepare {
  align-self: start;
  padding: clamp(1.25rem, 2.5vw, 1.85rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--ink-2);
}

.page-contact .contact-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.85rem;
}

.page-contact .contact-checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem;
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--white);
}

.page-contact .contact-checklist__item strong {
  color: var(--green-line);
  font-weight: 700;
}

.page-contact .contact-checklist__mark {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 0.3rem;
  border: 1px solid var(--green-line);
  border-radius: 6px;
  background: var(--pc-tint-green);
}

.page-contact .contact-checklist__mark::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 2px;
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--green-line);
  border-bottom: 2px solid var(--green-line);
  transform: rotate(42deg);
}

.page-contact .contact-prepare__media {
  margin: 1.5rem 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-contact .contact-prepare__media .media-frame__caption {
  padding: 0.7rem 0 0;
}

/* ---------- 回复节奏 ---------- */
.page-contact .contact-reply {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: center;
}

.page-contact .contact-reply__lead .eyebrow {
  margin-bottom: 0.7rem;
}

.page-contact .contact-reply__lead p {
  margin: 0.9rem 0 0;
  max-width: 52ch;
  font-size: 0.97rem;
  line-height: 1.78;
  color: var(--white);
}

.page-contact .contact-reply__lead .note {
  display: block;
  color: var(--mist);
  font-size: 0.88rem;
}

.page-contact .contact-reply__stats {
  border-top: 2px solid var(--green);
  padding-top: 1.1rem;
}

.page-contact .contact-reply__stats .stat__value {
  color: var(--green-line);
}

/* ---------- 服务坐标 ---------- */
.page-contact .contact-band {
  display: grid;
  gap: 1px;
  margin-top: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--line);
  overflow: hidden;
}

.page-contact .contact-band__cell {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.15rem 1.25rem;
  background: var(--ink-2);
}

.page-contact .contact-band__key {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-band__val {
  font-family: var(--font-mono);
  font-size: 1.02rem;
  letter-spacing: 0.06em;
  color: var(--green-line);
  word-break: break-word;
}

.page-contact .contact-band__val--text {
  font-family: var(--font-sans);
  font-size: 0.96rem;
  letter-spacing: 0.02em;
  line-height: 1.6;
  color: var(--white);
}

.page-contact .contact-band__note {
  margin: 1.25rem 0 0;
  max-width: 62ch;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .contact-band__note a {
  color: var(--green-line);
  text-decoration: none;
  border-bottom: 1px solid rgba(123, 224, 168, 0.4);
}

.page-contact .contact-band__note a:hover,
.page-contact .contact-band__note a:focus-visible {
  color: var(--white);
  border-color: var(--white);
}

/* ---------- 窄屏与宽屏 ---------- */
@media (max-width: 519px) {
  .page-contact .contact-channel__summary {
    grid-template-columns: auto minmax(0, 1fr);
    row-gap: 0.55rem;
  }

  .page-contact .contact-channel__summary .tag {
    grid-column: 2;
    justify-self: start;
  }

  .page-contact .contact-pulse {
    padding: 0.85rem 0.95rem;
  }
}

@media (min-width: 620px) {
  .page-contact .contact-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-contact .contact-reply {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-contact .contact-reply__stats {
    border-top: none;
    border-left: 2px solid var(--green);
    padding-top: 0;
    padding-left: 1.6rem;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-contact .contact-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

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

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