.page-contact {
  --chan-cut: 22px;
  display: block;
  background: var(--paper-100);
  color: var(--ink-900);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  margin-top: 22px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: 24px 0 8px;
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: 26px;
}

.page-contact .contact-hero__lead .display-1 {
  margin: 12px 0 0;
  font-size: clamp(31px, 4.4vw, 50px);
  line-height: 1.16;
  letter-spacing: .04em;
}

.page-contact .contact-hero__lead .lede {
  margin: 18px 0 0;
  max-width: 40em;
  color: var(--ink-700);
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 22px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--gray-500);
}

.page-contact .contact-hero__quick {
  position: relative;
  padding: 22px 22px 24px;
  background: var(--paper-50);
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan-deep);
}

.page-contact .contact-hero__quick::after {
  content: "";
  position: absolute;
  top: -3px;
  right: -1px;
  width: 24px;
  height: 24px;
  background: var(--paper-100);
  border-left: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero__quick-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15px;
  letter-spacing: .1em;
  color: var(--ink-900);
}

.page-contact .contact-hero__quick-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  margin: 0 0 12px;
}

.page-contact .contact-hero__quick-label {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gray-500);
}

.page-contact .contact-hero__quick-line .mono {
  font-size: 15px;
  color: var(--cyan-deep);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  word-break: break-all;
}

.page-contact .contact-hero__quick-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray-500);
}

/* ---------- 渠道选择带 ---------- */
.page-contact .channel-board {
  padding-top: 54px;
}

.page-contact .channel-board__grid {
  display: grid;
  gap: 18px;
  margin-top: 30px;
}

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

.page-contact .chan-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 15px 16px;
  background: var(--paper-50);
  border: 1px solid var(--line);
  border-left: 4px solid var(--line);
  text-decoration: none;
  color: var(--ink-900);
  transition: background-color .16s var(--ease), border-color .16s var(--ease);
}

.page-contact .chan-card--1 { border-left-color: var(--amber-bright); }
.page-contact .chan-card--2 { border-left-color: var(--cyan-bright); }
.page-contact .chan-card--3 { border-left-color: var(--ink-700); }

.page-contact .chan-card__no {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--gray-500);
}

.page-contact .chan-card__body {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-contact .chan-card__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: .04em;
}

.page-contact .chan-card__desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray-500);
}

.page-contact .chan-card__arrow {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--gray-500);
  transition: transform .16s var(--ease), color .16s var(--ease);
}

.page-contact .chan-card:hover {
  background: var(--paper-100);
}

.page-contact .chan-card:hover .chan-card__arrow {
  transform: translateX(3px);
  color: var(--cyan-deep);
}

.page-contact .channel-board:has(#channel-mail:target) .chan-card--1,
.page-contact .channel-board:has(#channel-phone:target) .chan-card--2,
.page-contact .channel-board:has(#channel-feedback:target) .chan-card--3 {
  background: var(--cyan-pale);
  border-color: var(--cyan-deep);
  border-left-color: var(--cyan-deep);
}

/* ---------- 渠道说明面板 ---------- */
.page-contact .channel-panels {
  display: grid;
  min-width: 0;
}

.page-contact .chan-panel {
  position: relative;
  display: block;
  padding: 26px 26px 28px;
  background: var(--paper-50);
  box-shadow: inset 0 3px 0 var(--cyan-deep);
  clip-path: polygon(var(--chan-cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--chan-cut));
}

.page-contact .chan-panel + .chan-panel {
  margin-top: 16px;
}

.page-contact .channel-panels:has(:target) .chan-panel {
  display: none;
}

.page-contact .channel-panels:has(:target) .chan-panel:target {
  display: block;
}

.page-contact #channel-mail { --panel-no: "01"; }
.page-contact #channel-phone { --panel-no: "02"; }
.page-contact #channel-feedback { --panel-no: "03"; }

.page-contact .chan-panel::after {
  content: var(--panel-no, "");
  position: absolute;
  top: 10px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--cyan-deep);
}

.page-contact .chan-panel__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  letter-spacing: .04em;
}

.page-contact .chan-panel__sub {
  margin: 0 0 20px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--gray-500);
  word-break: break-all;
}

.page-contact .chan-panel__block + .chan-panel__block {
  margin-top: 18px;
}

.page-contact .chan-panel__label {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan-deep);
}

.page-contact .chan-panel__block p {
  margin: 0;
  line-height: 1.8;
}

.page-contact .chan-panel__list {
  margin: 0;
  padding-left: 18px;
  line-height: 1.85;
}

.page-contact .chan-panel__list li + li {
  margin-top: 6px;
}

/* ---------- 问题分流 ---------- */
.page-contact .triage {
  padding-top: 54px;
}

.page-contact .triage__grid {
  display: grid;
  gap: 28px;
  margin-top: 30px;
}

.page-contact .triage__list {
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}

.page-contact .triage__item {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.page-contact .triage__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .triage__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gray-500);
}

.page-contact .triage__name {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: .03em;
}

.page-contact .triage__text {
  margin: 0 0 10px;
  line-height: 1.85;
  color: var(--ink-700);
}

.page-contact .triage__route {
  margin: 0;
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--gray-500);
}

.page-contact .triage__route a {
  color: var(--cyan-deep);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

/* ---------- 来信准备 ---------- */
.page-contact .letter-kit {
  padding-top: 54px;
}

.page-contact .kit__grid {
  display: grid;
  gap: 28px;
  margin-top: 30px;
}

.page-contact .kit__list {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.page-contact .kit__item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 15px 16px;
  background: var(--paper-50);
  border: 1px solid var(--line);
}

.page-contact .kit__box {
  display: block;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 1px solid var(--ink-700);
  background: var(--paper-100);
}

.page-contact .kit__name {
  margin: 0 0 5px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16px;
  letter-spacing: .03em;
}

.page-contact .kit__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray-500);
}

/* ---------- 图片框 ---------- */
.page-contact .media-frame {
  margin: 0;
  padding: 10px;
  background: var(--paper-50);
  border: 1px solid var(--line);
  min-width: 0;
}

.page-contact .media-frame--cut {
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  background: var(--paper-100);
}

.page-contact .media-frame__caption {
  margin: 10px 2px 0;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--gray-500);
}

/* ---------- 回复时效 ---------- */
.page-contact .reply {
  padding-top: 54px;
}

.page-contact .reply__panel {
  display: grid;
  gap: 22px;
  padding: 28px 26px;
  background: var(--ink-950);
  color: var(--paper-100);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-contact .reply__num {
  margin: 0;
  font-size: 66px;
  line-height: 1;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--cyan-bright);
}

.page-contact .reply__unit {
  margin: 8px 0 0;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--amber-bright);
}

.page-contact .reply__body h2 {
  margin: 0 0 12px;
  color: var(--paper-50);
}

.page-contact .reply__body p {
  margin: 0 0 10px;
  line-height: 1.9;
  color: var(--paper-100);
}

.page-contact .reply__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 联系信息 ---------- */
.page-contact .contact-facts-section {
  padding-top: 54px;
}

.page-contact .contact-facts {
  margin: 30px 0 0;
  border-top: 1px solid var(--ink-700);
}

.page-contact .contact-facts__row {
  display: grid;
  gap: 5px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-facts__label {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gray-500);
}

.page-contact .contact-facts__value {
  margin: 0;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-900);
  word-break: break-all;
}

.page-contact .contact-facts__note {
  margin: 22px 0 0;
  padding: 15px 18px;
  background: var(--cyan-pale);
  border-left: 3px solid var(--cyan-deep);
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-900);
}

/* ---------- 底部索引带 ---------- */
.page-contact .elsewhere {
  padding: 54px 0 66px;
}

.page-contact .elsewhere__bar {
  padding: 28px 26px 32px;
  background: var(--paper-50);
  border-top: 3px solid var(--ink-900);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.page-contact .elsewhere__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .elsewhere__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-900);
  transition: color .16s var(--ease);
}

.page-contact .elsewhere__link::after {
  content: "→";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  color: var(--cyan-deep);
}

.page-contact .elsewhere__link:hover {
  color: var(--cyan-deep);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-facts__row {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }

  .page-contact .kit__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 34px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .channel-board__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 32px;
    align-items: start;
  }

  .page-contact .triage__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 40px;
    align-items: start;
  }

  .page-contact .reply__panel {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 36px;
    align-items: center;
    padding: 34px 32px;
  }
}

@media (min-width: 1080px) {
  .page-contact .elsewhere__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .chan-card,
  .page-contact .chan-card__arrow,
  .page-contact .elsewhere__link {
    transition: none;
  }

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