.page-contact {
  --ct-cut: 18px;
  --ct-pad: 26px;
  background: var(--ink);
  color: var(--on-dark);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(118px, 17vh, 196px) clamp(52px, 8vw, 92px);
  background: var(--ink-deep);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .40;
  filter: saturate(.72) contrast(1.06);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(6, 35, 27, .95) 0%, rgba(11, 59, 46, .68) 52%, rgba(6, 35, 27, .34) 100%);
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gray-green);
}

.page-contact .breadcrumbs li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--amber);
}

.page-contact .breadcrumbs a {
  color: var(--on-dark-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .breadcrumbs a:hover {
  color: var(--amber-soft);
  border-bottom-color: var(--amber);
}

.page-contact .contact-hero .index-label {
  color: var(--amber);
}

.page-contact .contact-hero h1 {
  margin: 14px 0 24px;
  max-width: 15em;
  font-size: clamp(36px, 7vw, 82px);
  font-weight: 900;
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-contact .contact-hero .lede {
  max-width: 34em;
  margin: 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.75;
  color: var(--on-dark);
}

.page-contact .contact-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-hero__jump a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 5px;
  font-size: 14px;
  color: var(--on-dark);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .contact-hero__jump a::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--amber);
  transform: rotate(45deg);
}

.page-contact .contact-hero__jump a:hover {
  color: var(--amber-soft);
  border-bottom-color: var(--amber);
}

/* ---------- 主体栅格 ---------- */
.page-contact .contact-body {
  display: grid;
  gap: clamp(40px, 6vw, 72px);
  padding-block: clamp(56px, 9vw, 104px);
}

@media (min-width: 1000px) {
  .page-contact .contact-body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(48px, 6vw, 88px);
    align-items: start;
  }
}

.page-contact .contact-main {
  min-width: 0;
}

.page-contact .contact-section {
  margin-bottom: clamp(56px, 8vw, 96px);
}

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

.page-contact [data-observe-section] {
  scroll-margin-top: calc(var(--header-h) + 26px);
}

.page-contact .contact-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 22px;
  padding-bottom: 16px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-section__head .index-label {
  color: var(--amber);
}

.page-contact .contact-section h2 {
  margin: 0;
  font-size: clamp(23px, 3.2vw, 34px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .contact-section__lede {
  max-width: 32em;
  margin: 0 0 30px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--on-dark-dim);
}

/* ---------- 三个入口卡片 ---------- */
.page-contact .channel-grid {
  display: grid;
  gap: 18px;
}

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

@media (min-width: 1240px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .channel-card {
  position: relative;
  padding: var(--ct-pad);
  background: var(--ink-lift);
  border: 1px solid var(--line-soft);
  clip-path: polygon(0 0, calc(100% - var(--ct-cut)) 0, 100% var(--ct-cut), 100% 100%, 0 100%);
  transition: transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}

.page-contact .channel-card:hover {
  transform: translateY(-4px);
  border-color: var(--line);
  background: #145241;
}

.page-contact .channel-card__icon {
  display: block;
  width: 34px;
  height: 34px;
  margin-bottom: 20px;
  color: var(--amber);
}

.page-contact .channel-card__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gray-green);
}

.page-contact .channel-card__value {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.55;
  letter-spacing: .01em;
  color: var(--amber-soft);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__value a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed var(--line);
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .channel-card__value a:hover {
  color: #fff;
  border-bottom-color: var(--coral);
}

.page-contact .channel-card__desc {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--on-dark);
}

.page-contact .channel-card__fit {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-soft);
  font-size: 13px;
  color: var(--gray-green);
}

/* ---------- 在线时段 ---------- */
.page-contact .rhythm {
  display: grid;
  gap: 34px;
}

@media (min-width: 780px) {
  .page-contact .rhythm {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 44px;
    align-items: center;
  }
}

.page-contact .timeline {
  padding: 6px 0 0;
  margin-bottom: 26px;
}

.page-contact .timeline__rail {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 14px;
}

.page-contact .timeline__rail::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--amber) 0%, var(--amber-soft) 46%, var(--coral) 100%);
  transform: translateY(-50%);
}

.page-contact .timeline__dot {
  position: relative;
  width: 12px;
  height: 12px;
  background: var(--coral);
  transform: rotate(45deg);
}

.page-contact .timeline__dot:nth-child(1) {
  background: var(--amber-soft);
}

.page-contact .timeline__labels {
  display: flex;
  justify-content: space-between;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--gray-green);
}

.page-contact .timeline__caption {
  margin: 18px 0 0;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-contact .rhythm__p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--on-dark);
}

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

.page-contact .rhythm__figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  background: var(--ink-lift);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%);
  overflow: hidden;
}

.page-contact .rhythm__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  opacity: .9;
}

.page-contact .rhythm__figure .media__caption {
  display: block;
  padding: 14px 18px 18px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray-green);
}

/* ---------- 留言要素 ---------- */
.page-contact .checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: msg;
}

.page-contact .checklist li {
  counter-increment: msg;
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .checklist li::before {
  content: "0" counter(msg);
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1.4;
  color: var(--amber);
}

.page-contact .checklist__t {
  display: block;
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .checklist__d {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--on-dark-dim);
}

.page-contact .checklist__tip {
  margin: 24px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--coral);
  font-size: 14px;
  line-height: 1.7;
  color: var(--on-dark);
}

/* ---------- 合作与纠错 ---------- */
.page-contact .two-col {
  display: grid;
  gap: 18px;
}

@media (min-width: 800px) {
  .page-contact .two-col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .note-card {
  padding: 24px;
  background: rgba(242, 244, 245, .05);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--amber);
}

.page-contact .note-card__t {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 700;
  color: var(--amber-soft);
}

.page-contact .note-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--on-dark);
}

.page-contact .prose {
  max-width: 34em;
}

.page-contact .prose p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--on-dark);
}

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

/* ---------- 自助分流 ---------- */
.page-contact .triage {
  display: grid;
  gap: 12px;
}

@media (min-width: 720px) {
  .page-contact .triage {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .triage__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px;
  background: rgba(242, 244, 245, .04);
  border: 1px solid var(--line-soft);
  color: var(--paper);
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - var(--ct-cut)) 0, 100% var(--ct-cut), 100% 100%, 0 100%);
  transition: background .28s var(--ease), border-color .28s var(--ease);
}

.page-contact .triage__link:hover {
  background: rgba(212, 160, 23, .10);
  border-color: var(--line);
}

.page-contact .triage__name {
  position: relative;
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
}

.page-contact .triage__name::after {
  content: "→";
  margin-left: 10px;
  color: var(--amber);
  transition: transform .28s var(--ease);
  display: inline-block;
}

.page-contact .triage__link:hover .triage__name::after {
  transform: translateX(4px);
}

.page-contact .triage__desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray-green);
  text-align: right;
}

/* ---------- 侧栏 ---------- */
.page-contact .contact-side {
  display: grid;
  gap: 20px;
  min-width: 0;
}

@media (min-width: 1000px) {
  .page-contact .contact-side {
    position: sticky;
    top: calc(var(--header-h-scrolled) + 26px);
  }
}

.page-contact .side-panel {
  padding: 22px;
  background: var(--ink-lift);
  border: 1px solid var(--line-soft);
  clip-path: polygon(0 0, calc(100% - var(--ct-cut)) 0, 100% var(--ct-cut), 100% 100%, 0 100%);
}

.page-contact .side-panel--accent {
  border-color: var(--line);
  background: linear-gradient(160deg, #124C3C 0%, #0B3B2E 100%);
}

.page-contact .side-panel__t {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gray-green);
}

.page-contact .toc {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-contact .toc a {
  display: block;
  padding: 9px 12px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--on-dark-dim);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .toc a:hover {
  color: var(--on-dark);
  background: rgba(242, 244, 245, .05);
}

.page-contact .toc a[aria-current="true"] {
  color: var(--amber-soft);
  border-left-color: var(--amber);
  background: rgba(212, 160, 23, .10);
}

.page-contact .side-panel__k {
  margin: 16px 0 6px;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gray-green);
}

.page-contact .side-panel__k:first-of-type {
  margin-top: 0;
}

.page-contact .side-panel__v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.55;
  color: var(--amber-soft);
  overflow-wrap: anywhere;
}

.page-contact .side-panel__v a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed var(--line);
  transition: color .25s var(--ease);
}

.page-contact .side-panel__v a:hover {
  color: #fff;
}

.page-contact .side-panel__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--on-dark-dim);
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .triage__link,
  .page-contact .triage__name::after,
  .page-contact .toc a,
  .page-contact .breadcrumbs a,
  .page-contact .contact-hero__jump a {
    transition: none;
  }

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

  .page-contact .triage__link:hover .triage__name::after {
    transform: none;
  }
}