.page-contact {
  --contact-line: rgba(22, 40, 60, .14);
  --contact-line-paper: rgba(247, 242, 232, .2);
  --contact-card-bg: linear-gradient(180deg, rgba(255, 255, 255, .66), rgba(255, 255, 255, 0) 46%), var(--paper);
}

/* 面包屑 */
.page-contact .breadcrumb {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 26px var(--gutter) 0;
}

.page-contact .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--rock);
}

.page-contact .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 6px;
  color: var(--rock);
}

.page-contact .breadcrumb__link {
  color: var(--rock);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.page-contact .breadcrumb__link:hover {
  color: var(--amber);
}

.page-contact .breadcrumb__item[aria-current="page"] {
  color: var(--ink-blue);
}

/* 首屏 */
.page-contact .contact-intro__inner {
  max-width: 800px;
}

.page-contact .contact-intro .eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--moss);
  margin: 0 0 6px;
}

.page-contact .contact-intro h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(34px, 6.6vw, 68px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--ink-blue);
  margin: 14px 0 20px;
}

.page-contact .contact-intro .lede {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text);
  max-width: 660px;
  margin: 0;
}

.page-contact .contact-intro__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--contact-line);
}

.page-contact .contact-intro__hint {
  font-size: 14px;
  line-height: 1.7;
  color: var(--rock);
}

/* 信笺式双栏 */
.page-contact .contact-letter__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-contact .contact-letter__col--body {
  margin-top: 54px;
  padding-top: 40px;
  border-top: 2px solid var(--amber);
}

/* 左栏：图片 + 信息卡 */
.page-contact .contact-note__media {
  margin: 0 0 32px;
}

.page-contact .contact-note__media .media-frame {
  aspect-ratio: 10 / 7;
  overflow: hidden;
  border: 1px solid var(--contact-line);
}

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

.page-contact .contact-note__media .media-caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

.page-contact .contact-card {
  position: relative;
  padding: 34px 26px 30px;
  background: var(--contact-card-bg);
  border: 1px solid var(--contact-line);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.page-contact .contact-card__tab {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--ink-deep);
  background: var(--amber);
  padding: 5px 12px;
  margin-bottom: 18px;
}

.page-contact .contact-card__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 21px;
  line-height: 1.5;
  color: var(--ink-blue);
  margin: 0 0 22px;
}

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

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

.page-contact .contact-card .contact-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--moss);
  margin-bottom: 7px;
}

.page-contact .contact-card .contact-value {
  display: block;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink-blue);
  overflow-wrap: anywhere;
}

.page-contact .contact-card .contact-value--mono {
  font-family: var(--font-mono);
  font-size: 14.5px;
  letter-spacing: -.01em;
}

.page-contact .contact-card .contact-note {
  margin: 9px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--rock);
}

.page-contact .contact-card .contact-hours {
  display: block;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px dashed rgba(208, 138, 44, .55);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--clay);
}

/* 通用章节标题与正文 */
.page-contact .contact-section__title {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.4;
  color: var(--ink-blue);
  margin: 0 0 16px;
}

.page-contact .contact-section__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--amber);
}

.page-contact .contact-section__lede {
  margin: 0 0 26px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--rock);
  max-width: 56ch;
}

.page-contact .contact-prose {
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--text);
}

.page-contact .contact-prose p {
  margin: 0 0 16px;
  max-width: 62ch;
}

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

.page-contact .contact-prose a,
.page-contact .contact-triage__item a {
  color: var(--clay);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 160ms var(--ease);
}

.page-contact .contact-prose a:hover,
.page-contact .contact-triage__item a:hover {
  color: var(--amber);
}

/* 01 诉求分流 */
.page-contact .contact-triage {
  margin-bottom: 62px;
}

.page-contact .contact-triage .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .filter-btn {
  appearance: none;
  border: 1px solid var(--contact-line);
  background: transparent;
  color: var(--ink-blue);
  font-family: var(--font-sans);
  font-size: 13.5px;
  line-height: 1;
  padding: 9px 15px;
  cursor: pointer;
  transition: background-color 180ms var(--ease), border-color 180ms var(--ease),
    color 180ms var(--ease), transform 180ms var(--ease);
}

.page-contact .filter-btn:hover {
  border-color: var(--amber);
  background: rgba(242, 200, 121, .3);
  transform: translateY(-2px);
}

.page-contact .filter-btn:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-contact .filter-btn[aria-pressed="true"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink-deep);
  font-weight: 600;
}

.page-contact .filter-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--rock);
  margin-left: 4px;
}

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

.page-contact .contact-triage__item {
  position: relative;
  padding: 24px 22px 24px 58px;
  background: rgba(255, 255, 255, .52);
  border: 1px solid var(--contact-line);
  border-left: 3px solid var(--steel);
  transition: border-left-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-contact .contact-triage__item:hover {
  border-left-color: var(--amber);
  background: rgba(255, 255, 255, .88);
}

.page-contact .contact-triage__item.is-hidden {
  display: none;
}

.page-contact .contact-triage__num {
  position: absolute;
  left: 20px;
  top: 26px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--amber);
}

.page-contact .contact-triage__item h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink-blue);
  margin: 0 0 9px;
}

.page-contact .contact-triage__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.88;
  color: var(--text);
}

/* 02 邮件 */
.page-contact .contact-mail {
  margin-bottom: 62px;
}

.page-contact .contact-mail__subjects {
  margin: 26px 0 0;
  padding: 24px 24px 18px;
  background: var(--ink-blue);
  border-left: 3px solid var(--amber);
}

.page-contact .contact-mail__subjects-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--amber-soft);
}

.page-contact .contact-mail__subject {
  margin: 0;
  padding: 11px 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
  border-top: 1px solid var(--contact-line-paper);
  overflow-wrap: anywhere;
}

.page-contact .contact-mail__subjects-label + .contact-mail__subject {
  border-top: 0;
  padding-top: 0;
}

.page-contact .contact-mail__figure {
  margin: 30px 0 0;
}

.page-contact .contact-mail__figure .media-frame {
  aspect-ratio: 2 / 1;
  overflow: hidden;
  border: 1px solid var(--contact-line);
}

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

.page-contact .contact-mail__figure .media-caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

/* 03 准备清单 */
.page-contact .contact-prep {
  margin-bottom: 62px;
}

.page-contact .contact-prep__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-contact .contact-prep__item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 0 14px;
  align-items: baseline;
  padding: 15px 0;
  border-top: 1px solid var(--contact-line);
}

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

.page-contact .contact-prep__num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--amber);
}

.page-contact .contact-prep__text {
  font-size: 15px;
  line-height: 1.82;
  color: var(--text);
}

/* 04 处理节奏 */
.page-contact .contact-flow__steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 15px;
}

.page-contact .contact-flow__step {
  position: relative;
  padding-left: 30px;
  font-size: 15px;
  line-height: 1.86;
  color: var(--text);
}

.page-contact .contact-flow__step::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 11px;
  width: 8px;
  height: 8px;
  border: 2px solid var(--moss);
  transform: rotate(45deg);
}

.page-contact .contact-flow__tail {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px dashed rgba(208, 138, 44, .5);
}

/* 底部窄条 */
.page-contact .contact-strip {
  margin-top: 76px;
  border-top: 1px solid var(--contact-line);
}

.page-contact .contact-strip__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 18px;
  padding-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--rock);
}

/* 桌面端：左窄右宽的 5:8 信笺分栏 */
@media (min-width: 960px) {
  .page-contact .contact-letter__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 8fr);
  }

  .page-contact .contact-letter__col--info {
    padding-right: 46px;
  }

  .page-contact .contact-letter__col--body {
    margin-top: 0;
    padding-top: 6px;
    padding-left: 48px;
    border-top: 0;
    border-left: 2px solid var(--amber);
  }

  .page-contact .contact-card {
    padding: 36px 30px 32px;
  }
}

@media (min-width: 1240px) {
  .page-contact .contact-letter__col--info {
    padding-right: 56px;
  }

  .page-contact .contact-letter__col--body {
    padding-left: 60px;
  }
}

/* 极窄屏兜底 */
@media (max-width: 420px) {
  .page-contact .contact-card {
    padding: 28px 18px 26px;
  }

  .page-contact .contact-triage__item {
    padding: 22px 16px 22px 46px;
  }

  .page-contact .contact-triage__num {
    left: 16px;
  }

  .page-contact .contact-prep__item {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 0 10px;
  }
}