.page-contact {
  --ct-orbit: rgba(224, 179, 84, .34);
  --ct-glow: rgba(255, 106, 26, .28);
  background: var(--c-night);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -12%;
  width: min(62vw, 620px);
  height: min(62vw, 620px);
  background: radial-gradient(circle at 58% 42%, var(--ct-glow), rgba(255, 106, 26, 0) 64%);
  border-radius: 50%;
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 68%;
  height: 1px;
  background: linear-gradient(90deg, rgba(224, 179, 84, 0) 0%, var(--ct-orbit) 20%, rgba(27, 110, 156, .28) 64%, rgba(224, 179, 84, 0) 100%);
  pointer-events: none;
}

.page-contact .contact-hero .phx-container {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero__label {
  margin-top: clamp(18px, 3vw, 30px);
}

.page-contact .contact-hero__title {
  max-width: 17ch;
  margin: clamp(14px, 2.2vw, 22px) 0 0;
}

.page-contact .contact-hero__lede {
  max-width: 44ch;
  margin-top: clamp(14px, 2.4vw, 22px);
  color: rgba(245, 241, 234, .78);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .contact-toc {
  display: flex;
  gap: 8px;
  margin-top: clamp(22px, 3.4vw, 36px);
  padding-bottom: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-contact .contact-toc::-webkit-scrollbar {
  display: none;
}

.page-contact .contact-toc__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: rgba(245, 241, 234, .74);
  font-size: 13px;
  letter-spacing: .04em;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .contact-toc__link .phx-mono {
  color: var(--c-gold);
  font-size: 12px;
}

.page-contact .contact-toc__link:hover,
.page-contact .contact-toc__link:focus-visible {
  border-color: var(--c-ember);
  color: var(--c-paper);
  background: rgba(255, 106, 26, .12);
}

/* ---------- 通用图片 ---------- */
.page-contact .contact-figure {
  margin: clamp(26px, 4vw, 42px) 0 0;
}

.page-contact .contact-figure .phx-figure__frame {
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
}

.page-contact .contact-figure .phx-figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 01 渠道 ---------- */
.page-contact .contact-channels {
  position: relative;
}

.page-contact .channel-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .channel-card {
  position: relative;
  padding: clamp(22px, 3vw, 34px);
  background: linear-gradient(165deg, rgba(255, 106, 26, .16), rgba(22, 32, 46, .93) 58%);
  border: 1px solid var(--line);
  border-radius: var(--r-organic);
  box-shadow: var(--shadow-lift);
}

.page-contact .channel-card--cool {
  background: linear-gradient(165deg, rgba(27, 110, 156, .24), rgba(22, 32, 46, .93) 58%);
  border-radius: 22px 6px 22px 22px;
}

.page-contact .channel-card__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-gold);
}

.page-contact .channel-card__title {
  margin: .55em 0 .5em;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.3;
  color: var(--c-paper);
}

.page-contact .channel-card__value {
  margin: 0 0 16px;
  padding: 11px 14px;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.5vw, 17px);
  letter-spacing: .04em;
  line-height: 1.5;
  color: var(--c-paper);
  word-break: break-all;
  background: rgba(14, 17, 24, .58);
  border-left: 3px solid var(--c-ember);
  border-radius: 4px;
}

.page-contact .channel-card--cool .channel-card__value {
  border-left-color: var(--c-lake);
}

.page-contact .channel-card__body {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(245, 241, 234, .76);
}

.page-contact .channel-card__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .channel-card__list li {
  position: relative;
  margin: 9px 0;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(245, 241, 234, .74);
}

.page-contact .channel-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .64em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-ember);
}

.page-contact .channel-card--cool .channel-card__list li::before {
  background: var(--c-lake);
}

/* ---------- 折叠说明 ---------- */
.page-contact .answer-slot {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-contact .answer-slot summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  list-style: none;
  cursor: pointer;
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--c-gold);
}

.page-contact .answer-slot summary::-webkit-details-marker {
  display: none;
}

.page-contact .answer-slot summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--c-mist);
}

.page-contact .answer-slot[open] summary::after {
  content: "–";
}

.page-contact .answer-slot__body {
  margin-top: 10px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(245, 241, 234, .7);
}

/* ---------- 02 邮件写法 ---------- */
.page-contact .contact-mail__layout {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.page-contact .contact-mail__intro .phx-prose {
  color: rgba(30, 38, 48, .78);
}

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

.page-contact .mail-checklist__item {
  position: relative;
  padding: 18px 20px 18px 64px;
  background: rgba(255, 255, 255, .66);
  border: 1px solid var(--line-ink);
  border-radius: var(--r-md);
}

.page-contact .mail-checklist__num {
  position: absolute;
  left: 20px;
  top: 21px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-flame);
}

.page-contact .mail-checklist__title {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--c-ink);
}

.page-contact .mail-checklist__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(30, 38, 48, .74);
}

.page-contact .contact-bridge {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 34px);
  padding-top: clamp(18px, 2.4vw, 26px);
  border-top: 1px solid var(--line-ink);
}

.page-contact .contact-bridge__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border: 1px solid var(--line-ink);
  border-radius: var(--r-md);
  font-size: 14.5px;
  color: var(--c-ink);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .contact-bridge__item .phx-mono {
  color: var(--c-lake);
}

.page-contact .contact-bridge__item:hover,
.page-contact .contact-bridge__item:focus-visible {
  border-color: var(--c-lake);
  background: rgba(27, 110, 156, .08);
}

/* ---------- 03 回复节奏 ---------- */
.page-contact .contact-rhythm__strip {
  display: flex;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 34px);
  padding-bottom: 10px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
}

.page-contact .rhythm-day {
  position: relative;
  flex: 0 0 152px;
  scroll-snap-align: start;
  padding: 16px 14px 14px;
  background: rgba(14, 17, 24, .62);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

.page-contact .rhythm-day::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: var(--line-strong);
  border-radius: var(--r-md) var(--r-md) 0 0;
}

.page-contact .rhythm-day--work::before {
  background: linear-gradient(90deg, var(--c-ember), var(--c-gold));
}

.page-contact .rhythm-day__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  list-style: none;
  cursor: pointer;
}

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

.page-contact .rhythm-day__name {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--c-paper);
}

.page-contact .rhythm-day__mark {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-mist);
  opacity: .45;
}

.page-contact .rhythm-day--work .rhythm-day__mark {
  background: var(--c-ember);
  animation: contact-breath 4s ease-in-out infinite;
}

.page-contact .rhythm-day__body {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(245, 241, 234, .72);
}

@keyframes contact-breath {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.35); opacity: .6; }
}

/* ---------- 04 内容协作 ---------- */
.page-contact .contact-collab__layout {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.page-contact .contact-collab__intro .phx-prose {
  color: rgba(30, 38, 48, .78);
}

.page-contact .collab-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-contact .collab-list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
  padding: 16px 18px;
  background: rgba(255, 255, 255, .66);
  border-left: 3px solid var(--c-steppe);
  border-radius: 6px var(--r-md) var(--r-md) 6px;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--c-ink);
}

.page-contact .collab-list .phx-mono {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-flame);
  padding-top: .22em;
}

/* ---------- 05 青海服务点 ---------- */
.page-contact .contact-qinghai__layout {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.page-contact .address-plate {
  padding: clamp(24px, 3.4vw, 40px);
  background: var(--c-paper);
  border: 1px solid var(--ct-orbit);
  border-radius: var(--r-lg);
  color: var(--c-ink);
  box-shadow: var(--shadow-lift);
}

.page-contact .address-plate__title {
  margin: clamp(12px, 1.8vw, 18px) 0 0;
  color: var(--c-ink);
}

.page-contact .address-plate__addr {
  margin: 16px 0 0;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: clamp(14.5px, 1.7vw, 17px);
  letter-spacing: .04em;
  line-height: 1.7;
  color: var(--c-ink);
  background: rgba(224, 179, 84, .18);
  border-left: 4px solid var(--c-gold);
  border-radius: 4px 12px 12px 4px;
  word-break: break-word;
}

.page-contact .address-plate__list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .address-plate__list li {
  position: relative;
  margin: 9px 0;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(30, 38, 48, .78);
}

.page-contact .address-plate__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 2px;
  background: var(--c-lake);
}

.page-contact .address-plate__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-ink);
  color: rgba(30, 38, 48, .62);
}

.page-contact .contact-qinghai__figure {
  margin: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .contact-mail__layout {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 880px) {
  .page-contact .channel-grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-contact .channel-card--cool {
    margin-top: clamp(24px, 4vw, 56px);
  }
}

@media (min-width: 940px) {
  .page-contact .contact-mail__layout {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-contact .contact-collab__layout {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-contact .contact-qinghai__layout {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .rhythm-day--work .rhythm-day__mark {
    animation: none;
  }

  .page-contact .contact-toc__link,
  .page-contact .contact-bridge__item {
    transition: none;
  }
}