.page-contact {
  --pc-sheet-w: 480px;
  --pc-flow-w: 760px;
}

/* ---------- 面包屑与首屏 ---------- */
.page-contact .contact-crumbs {
  padding-top: clamp(16px, 2.6vw, 26px);
}

.page-contact .contact-hero {
  padding-top: clamp(16px, 2.6vw, 28px);
  padding-bottom: clamp(30px, 5vw, 52px);
}

.page-contact .contact-hero h1 {
  margin: 12px 0 0;
  max-width: 18ch;
}

.page-contact .contact-hero .lede {
  margin: 18px 0 0;
  max-width: 62ch;
  color: var(--ink-soft);
}

.page-contact .contact-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

/* ---------- 左右分屏骨架 ---------- */
.page-contact .contact-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 56px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-contact .contact-rail {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.page-contact .rail-label {
  color: var(--gold);
  margin: 0;
}

.page-contact .contact-flow {
  min-width: 0;
  border-top: 1px solid var(--gold);
  padding-top: clamp(28px, 4vw, 40px);
}

.page-contact .contact-flow > * {
  max-width: var(--pc-flow-w);
}

@media (min-width: 960px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(290px, 348px) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .contact-flow {
    border-top: 0;
    border-left: 1px solid var(--gold);
    padding-top: 0;
    padding-left: clamp(30px, 4.4vw, 60px);
  }
}

/* ---------- 渠道卡 ---------- */
.page-contact .channel-card {
  position: relative;
  padding: 9px;
  border-radius: var(--radius);
  background:
    linear-gradient(155deg, rgba(16, 28, 48, 0.96), rgba(30, 46, 74, 0.86)),
    radial-gradient(120% 90% at 8% 0%, rgba(200, 52, 43, 0.28), transparent 60%);
  box-shadow: 0 14px 28px -22px rgba(16, 28, 48, 0.9);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.page-contact .channel-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 34px -22px rgba(16, 28, 48, 0.85);
}

.page-contact .channel-card__k {
  margin: 2px 4px 8px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-contact .channel-card__body {
  background: var(--white);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
}

.page-contact .channel-card__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 21px;
  line-height: 1.3;
  color: var(--ink);
}

.page-contact .channel-card__desc {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .channel-card__val {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .channel-card__val.mono {
  font-size: 14.5px;
  letter-spacing: 0.01em;
}

/* ---------- 路线图 ---------- */
.page-contact .route-figure {
  margin: 4px 0 0;
  background: var(--ink);
  border-radius: var(--radius);
  padding: 16px 16px 12px;
}

.page-contact .route-plot {
  display: block;
  width: 100%;
  height: auto;
}

.page-contact .route-plot__line {
  fill: none;
  stroke: var(--crimson);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-dasharray: 420;
  stroke-dashoffset: 420;
  animation: pc-draw 1s ease forwards;
}

.page-contact .route-plot__node {
  fill: var(--gold);
}

.page-contact .route-plot__node--end {
  fill: var(--crimson);
}

.page-contact .route-plot__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  fill: var(--on-dark-dim);
}

.page-contact .route-figure .meta {
  display: block;
  margin-top: 8px;
  color: var(--on-dark-dim);
}

@keyframes pc-draw {
  to { stroke-dashoffset: 0; }
}

/* ---------- 图片 ---------- */
.page-contact .contact-photo {
  margin: 8px 0 0;
}

.page-contact .contact-photo img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--sand);
}

.page-contact .contact-photo figcaption {
  margin-top: 8px;
}

.page-contact .contact-photo--square {
  max-width: 420px;
  margin: clamp(24px, 3.4vw, 34px) 0 0;
}

/* ---------- 章节 ---------- */
.page-contact .cf-section {
  margin-bottom: clamp(44px, 6.4vw, 78px);
}

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

.page-contact .cf-head {
  margin-bottom: 18px;
}

.page-contact .cf-head .eyebrow {
  margin: 0 0 10px;
  color: var(--gold);
}

.page-contact .cf-head h2 {
  margin: 0;
}

.page-contact .cf-p {
  margin: 0 0 16px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--ink-soft);
  max-width: var(--measure);
}

.page-contact .cf-p a {
  color: var(--crimson);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 三样信息 ---------- */
.page-contact .step-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-contact .step-list > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px dashed var(--line);
}

.page-contact .step-list > li:last-child {
  border-bottom: 1px dashed var(--line);
}

.page-contact .step-list__num {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
  padding-top: 4px;
}

.page-contact .step-list h3 {
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 500;
  color: var(--ink);
}

.page-contact .step-list p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 分类 chip ---------- */
.page-contact .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.page-contact .chip {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.page-contact .chip:hover {
  border-color: var(--gold);
  color: var(--ink);
}

.page-contact .chip:focus-visible {
  outline: 2px solid var(--jade);
  outline-offset: 2px;
}

.page-contact .chip[aria-pressed="true"] {
  background: var(--crimson);
  border-color: var(--crimson);
  color: var(--white);
}

.page-contact .need-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .need-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  padding: 16px 18px 14px;
}

.page-contact .need-item h3 {
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
}

.page-contact .need-item ul {
  margin: 0;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-contact .need-item li {
  margin-bottom: 4px;
}

/* ---------- 反馈模板 ---------- */
.page-contact .tpl {
  margin: 4px 0 20px;
  padding: 20px 22px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 2;
  border-radius: var(--radius);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

.page-contact .tpl__k {
  color: var(--gold);
}

/* ---------- 更正与供稿 ---------- */
.page-contact .flip {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 4px;
}

@media (min-width: 700px) {
  .page-contact .flip {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

.page-contact .flip__card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 3px solid var(--ink-soft);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
}

.page-contact .flip__card:nth-child(2) {
  border-top-color: var(--jade);
}

.page-contact .flip__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
  color: var(--ink);
}

.page-contact .flip__card p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 合作事实表 ---------- */
.page-contact .fact-list {
  margin: 22px 0 20px;
  border-top: 1px solid var(--gold);
}

.page-contact .fact-list__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 620px) {
  .page-contact .fact-list__row {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

.page-contact .fact-list dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-contact .fact-list dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .fact-list dd a {
  color: var(--crimson);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 反馈表单 ---------- */
.page-contact .feedback-sheet {
  max-width: var(--pc-sheet-w);
  margin: 6px 0 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(18px, 3vw, 26px);
}

.page-contact .field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.page-contact .field:last-of-type {
  margin-bottom: 4px;
}

.page-contact .field label {
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-contact .field input,
.page-contact .field select,
.page-contact .field textarea {
  width: 100%;
  box-sizing: border-box;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 11px 13px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-contact .field textarea {
  resize: vertical;
  line-height: 1.75;
}

.page-contact .field input::placeholder,
.page-contact .field textarea::placeholder {
  color: var(--slate);
  opacity: 0.8;
}

.page-contact .field input:focus,
.page-contact .field select:focus,
.page-contact .field textarea:focus {
  outline: none;
  border-color: var(--jade);
  box-shadow: 0 0 0 3px rgba(31, 122, 107, 0.15);
}

.page-contact .field-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

@media (min-width: 560px) {
  .page-contact .field-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 0 16px;
  }
}

.page-contact .sheet-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
}

.page-contact .sheet-hint {
  margin: 0;
  max-width: 240px;
  line-height: 1.6;
}

.page-contact .notice {
  margin: 0 0 20px;
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .route-plot__line {
    animation: none;
    stroke-dashoffset: 0;
  }

  .page-contact .channel-card,
  .page-contact .chip,
  .page-contact .field input,
  .page-contact .field select,
  .page-contact .field textarea {
    transition: none;
  }

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