.page-contact {
  --contact-line: 3px;
  --contact-gap: 18px;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 34px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--mist);
}

.page-contact .breadcrumb a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease-out, color .2s ease-out;
}

.page-contact .breadcrumb a:hover {
  color: var(--gold);
  border-bottom-color: var(--edge);
}

.page-contact .breadcrumb [aria-current="page"] {
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-block: 40px 68px;
  background:
    radial-gradient(1200px 520px at 82% -10%, rgba(23, 89, 74, .62), transparent 66%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-700) 100%);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: 40px;
  align-items: start;
}

.page-contact .contact-hero__intro h1 {
  margin: 14px 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.6vw, 56px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .contact-hero__intro .lead {
  margin: 0 0 32px;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(245, 241, 230, .78);
}

.page-contact .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
}

/* ---------- 渠道卡片 ---------- */
.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .channel {
  position: relative;
  padding: 16px 18px 16px 20px;
  background: rgba(245, 241, 230, .045);
  border: 1px solid var(--edge-soft);
  border-left: var(--contact-line) solid var(--gold);
  border-radius: 0 14px 14px 0;
  transition: transform .24s ease-out, background .24s ease-out, border-color .24s ease-out;
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  transform: translateY(-4px);
  background: rgba(245, 241, 230, .08);
  border-left-color: var(--gold-soft);
}

.page-contact .channel__tag {
  margin: 0 0 10px;
}

.page-contact .channel__value {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(15px, 3.9vw, 20px);
  line-height: 1.45;
  color: var(--gold-soft);
  word-break: break-word;
}

.page-contact .channel__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(245, 241, 230, .72);
}

.page-contact .channel__meta {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-contact .channel .tag {
  display: inline-block;
  font-size: 12px;
}

/* ---------- 首屏图片 ---------- */
.page-contact .media {
  margin: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--edge);
  background:
    repeating-linear-gradient(45deg, rgba(23, 89, 74, .5) 0 12px, rgba(8, 37, 31, .5) 12px 24px);
}

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

.page-contact .contact-hero__media img {
  aspect-ratio: 3 / 2;
}

.page-contact .media-caption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(245, 241, 230, .68);
  background: rgba(8, 37, 31, .72);
}

/* ---------- 提交要点 ---------- */
.page-contact .contact-briefs {
  padding-block: 64px;
}

.page-contact .section-head {
  margin-bottom: 36px;
}

.page-contact .section-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(38px, 9vw, 70px);
  line-height: 1;
  color: var(--gold);
  opacity: .9;
  margin-bottom: 10px;
}

.page-contact .section-title {
  margin: 6px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 5.4vw, 40px);
  line-height: 1.22;
  color: var(--charcoal);
}

.page-contact .section--dark .section-title,
.page-contact .section--mid .section-title {
  color: var(--paper);
}

.page-contact .contact-briefs__grid {
  display: grid;
  gap: 28px;
  align-items: start;
}

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

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--line-paper);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: transform .24s ease-out, box-shadow .24s ease-out;
}

.page-contact .checklist__item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-float);
}

.page-contact .checklist__index {
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1.4;
  color: var(--gold);
}

.page-contact .checklist__title {
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 17px;
  color: var(--charcoal);
}

.page-contact .checklist__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(20, 23, 26, .76);
}

.page-contact .briefs-aside {
  padding: 24px 22px;
}

.page-contact .briefs-aside .card-title {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  color: var(--paper);
}

.page-contact .briefs-aside p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 241, 230, .78);
}

.page-contact .briefs-aside__foot {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--edge-soft);
  font-size: 14px;
  color: var(--gold-soft);
}

/* ---------- 处理流程 ---------- */
.page-contact .contact-process {
  padding-block: 64px;
}

.page-contact .process-layout {
  display: grid;
  gap: 34px;
  align-items: start;
}

.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 26px;
}

.page-contact .flow-node {
  position: relative;
  padding-left: 0;
}

.page-contact .flow-node__dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: 62px;
  margin-bottom: 16px;
  border-radius: 50%;
  border: 1px solid var(--edge);
  background: rgba(8, 37, 31, .55);
  transition: transform .26s ease-out, border-color .26s ease-out;
}

.page-contact .flow-node:hover .flow-node__dot {
  transform: scale(1.08);
  border-color: var(--gold);
}

.page-contact .flow-node--md .flow-node__dot {
  width: 54px;
  height: 54px;
}

.page-contact .flow-node--sm .flow-node__dot {
  width: 46px;
  height: 46px;
}

.page-contact .flow-node__dot .num {
  font-size: 18px;
}

.page-contact .flow-node__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  color: var(--paper);
}

.page-contact .flow-node__text {
  margin: 0;
  max-width: 30em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 241, 230, .76);
}

.page-contact .flow-node__time {
  display: inline-block;
  margin-top: 10px;
  padding: 5px 12px;
  border: 1px solid var(--edge-soft);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--gold-soft);
  background: rgba(201, 162, 39, .08);
}

.page-contact .process-figure img {
  aspect-ratio: 16 / 9;
}

/* ---------- 内容反馈 ---------- */
.page-contact .contact-feedback {
  padding-block: 64px;
}

.page-contact .feedback-grid {
  display: grid;
  gap: 18px;
}

.page-contact .feedback-card {
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-contact .feedback-card .tag {
  align-self: flex-start;
  font-size: 12px;
}

.page-contact .feedback-card .card-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.35;
  color: var(--charcoal);
}

.page-contact .feedback-card.card--ink .card-title {
  color: var(--paper);
}

.page-contact .feedback-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(20, 23, 26, .76);
}

.page-contact .feedback-card.card--ink p {
  color: rgba(245, 241, 230, .78);
}

.page-contact .feedback-more {
  margin: 34px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line-paper);
  font-size: 15px;
  line-height: 1.85;
  color: rgba(20, 23, 26, .74);
}

.page-contact .feedback-more a {
  color: var(--ink-500);
  text-decoration: none;
  border-bottom: 1px solid var(--edge);
  transition: color .2s ease-out, border-color .2s ease-out;
}

.page-contact .feedback-more a:hover {
  color: var(--ink-900);
  border-bottom-color: var(--gold);
}

/* ---------- 收尾邮箱块 ---------- */
.page-contact .contact-closing {
  padding-block: 88px 72px;
  background:
    radial-gradient(760px 380px at 50% 0%, rgba(23, 89, 74, .55), transparent 70%),
    var(--ink-900);
}

.page-contact .closing-block {
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.page-contact .closing-block .eyebrow {
  margin-bottom: 26px;
}

.page-contact .closing-mail {
  margin: 0 0 22px;
  font-size: clamp(19px, 4.6vw, 42px);
  line-height: 1.3;
  letter-spacing: .01em;
  word-break: break-word;
}

.page-contact .closing-note {
  margin: 0 auto 34px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(245, 241, 230, .72);
}

.page-contact .mail-template {
  border: 1px solid var(--edge-soft);
  border-radius: var(--radius-card);
  background: rgba(245, 241, 230, .04);
  text-align: left;
  overflow: hidden;
}

.page-contact .mail-template summary {
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--gold-soft);
  cursor: pointer;
  list-style: none;
  transition: background .2s ease-out;
}

.page-contact .mail-template summary::-webkit-details-marker {
  display: none;
}

.page-contact .mail-template summary::before {
  content: "+ ";
  color: var(--gold);
}

.page-contact .mail-template[open] summary::before {
  content: "− ";
}

.page-contact .mail-template summary:hover {
  background: rgba(201, 162, 39, .1);
}

.page-contact .mail-template__body {
  padding: 4px 20px 22px;
  border-top: 1px solid var(--edge-soft);
}

.page-contact .mail-template__line {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(245, 241, 230, .82);
  word-break: break-word;
}

.page-contact .closing-meta {
  margin: 38px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-contact .contact-hero {
    padding-block: 56px 88px;
  }

  .page-contact .checklist__item {
    grid-template-columns: 48px 1fr;
    padding: 20px 24px;
  }

  .page-contact .feedback-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .page-contact .closing-mail {
    letter-spacing: .04em;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 1.06fr .94fr;
    gap: 60px;
    align-items: stretch;
  }

  .page-contact .contact-hero__media {
    align-self: center;
  }

  .page-contact .contact-briefs__grid {
    grid-template-columns: 1.55fr 1fr;
    gap: 40px;
  }

  .page-contact .briefs-aside {
    position: sticky;
    top: var(--header-offset);
    padding: 28px 26px;
  }

  .page-contact .process-layout {
    gap: 44px;
  }

  .page-contact .flow {
    grid-template-columns: 1fr;
    gap: 0;
    position: relative;
    padding-left: 0;
    border-left: 1px solid var(--edge-soft);
    padding-block: 6px;
  }

  .page-contact .flow-node {
    padding: 0 0 30px 30px;
  }

  .page-contact .flow-node:last-child {
    padding-bottom: 0;
  }

  .page-contact .flow-node__dot {
    position: absolute;
    left: -31px;
    top: 0;
    margin-bottom: 0;
    background: var(--ink-700);
  }

  .page-contact .flow-node__title {
    padding-top: 14px;
  }

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

  .page-contact .contact-closing {
    padding-block: 110px 88px;
  }
}

/* ---------- 宽屏微调 ---------- */
@media (min-width: 1200px) {
  .page-contact .contact-hero__intro h1 {
    max-width: 13em;
  }

  .page-contact .channel__note {
    max-width: 42em;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .checklist__item,
  .page-contact .flow-node__dot {
    transition: none;
  }

  .page-contact .channel:hover,
  .page-contact .channel:focus-within,
  .page-contact .checklist__item:hover {
    transform: none;
  }
}