.page-contact {
  --fb-border: 2px solid var(--ink-950);
  --fb-hairline: var(--paper-2);
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: 16px;
  font-family: var(--font-sans);
  color: var(--ink-950);
}

@media (min-width: 1024px) {
  .page-contact {
    padding-inline: 28px;
  }
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: var(--fb-border);
}

.page-contact .contact-hero > .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-800);
  text-transform: uppercase;
}

.page-contact h1 {
  margin: 0 0 14px;
  font-weight: 900;
  font-size: clamp(36px, 10vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-contact .contact-hero__lede {
  max-width: 34em;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink-950);
}

.page-contact .contact-hero__meta {
  display: grid;
  gap: 1px;
  margin: 22px 0 0;
  padding: 0;
  border: var(--fb-border);
  background: var(--ink-950);
}

.page-contact .contact-hero__metaitem {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 12px;
  padding: 11px 13px;
  background: var(--paper-3);
}

.page-contact .contact-hero__metaitem dt {
  font-size: 13px;
  color: var(--muted);
}

.page-contact .contact-hero__metaitem dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--ink-900);
}

@media (min-width: 720px) {
  .page-contact .contact-hero__meta {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .contact-hero__metaitem {
    flex-direction: column;
    gap: 6px;
  }
}

/* ---------- 图片 ---------- */
.page-contact .fig {
  margin: 0;
}

.page-contact .fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.08);
}

.page-contact .fig__cap {
  margin: 8px 0 0;
  font-size: 12px;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .contact-hero__fig {
  margin: 26px 0 0;
  border: var(--fb-border);
  box-shadow: var(--shadow-hard-sm);
  background: var(--ink-900);
}

.page-contact .contact-hero__fig .fig__cap {
  margin: 0;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.02em;
  color: var(--paper-2);
  background: var(--ink-900);
}

.page-contact .contact-lines__fig {
  border: var(--fb-border);
  box-shadow: var(--shadow-hard-sm);
}

/* ---------- 章节骨架 ---------- */
.page-contact .section {
  margin-top: 48px;
}

.page-contact .section__head {
  margin-bottom: 16px;
  padding-top: 14px;
  border-top: var(--fb-border);
}

.page-contact .section__eyebrow {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-800);
}

.page-contact .section__title {
  margin: 0;
  font-weight: 900;
  font-size: clamp(22px, 5.6vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-contact .prose {
  max-width: 34em;
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-950);
}

/* ---------- 四类入口 ---------- */
.page-contact .fb-split {
  display: grid;
  gap: 16px;
}

.page-contact .fb-tabs {
  display: grid;
  gap: 12px;
}

@media (min-width: 560px) {
  .page-contact .fb-tabs {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .page-contact .fb-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
    gap: 28px;
    align-items: start;
  }
}

.page-contact .fb-entry {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "code name"
    "code hint";
  gap: 3px 12px;
  padding: 14px;
  border: var(--fb-border);
  background: var(--paper-3);
  box-shadow: var(--shadow-hard-sm);
  color: var(--ink-900);
  text-decoration: none;
  transition: transform var(--t) var(--ease),
    box-shadow var(--t) var(--ease),
    background-color var(--t) var(--ease),
    color var(--t) var(--ease);
}

.page-contact .fb-entry__code {
  grid-area: code;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink-800);
  transition: color var(--t) var(--ease);
}

.page-contact .fb-entry__name {
  grid-area: name;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-contact .fb-entry__hint {
  grid-area: hint;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
  transition: color var(--t) var(--ease);
}

.page-contact .fb-entry:hover,
.page-contact .fb-entry:focus-visible {
  transform: translate(-3px, -3px);
  box-shadow: 6px 6px 0 var(--ink-950);
  background: var(--ink-900);
  color: var(--paper);
  outline: none;
}

.page-contact .fb-entry:hover .fb-entry__code,
.page-contact .fb-entry:focus-visible .fb-entry__code {
  color: var(--accent);
}

.page-contact .fb-entry:hover .fb-entry__hint,
.page-contact .fb-entry:focus-visible .fb-entry__hint {
  color: var(--paper-2);
}

.page-contact .fb-panels {
  display: grid;
  gap: 14px;
}

.page-contact .fb-panel {
  padding: 16px;
  border: var(--fb-border);
  border-left: 8px solid var(--ink-800);
  background: var(--paper-3);
  box-shadow: var(--shadow-hard-sm);
  transition: background-color var(--t) var(--ease),
    color var(--t) var(--ease),
    border-color var(--t) var(--ease),
    box-shadow var(--t) var(--ease);
}

.page-contact .fb-panel__name {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink-900);
  transition: color var(--t) var(--ease);
}

.page-contact .fb-panel__body {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-950);
  transition: color var(--t) var(--ease);
}

.page-contact .fb-panel__spec {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--muted);
  transition: color var(--t) var(--ease);
}

.page-contact .fb-panel:target {
  border-left-color: var(--accent);
  background: var(--ink-900);
  box-shadow: 8px 8px 0 var(--ink-800);
}

.page-contact .fb-panel:target .fb-panel__name {
  color: var(--accent);
}

.page-contact .fb-panel:target .fb-panel__body {
  color: var(--paper);
}

.page-contact .fb-panel:target .fb-panel__spec {
  color: var(--paper-2);
}

/* ---------- 纠错清单 ---------- */
.page-contact .need-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 640px) {
  .page-contact .need-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1040px) {
  .page-contact .need-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-contact .need {
  padding: 18px 16px;
  border: var(--fb-border);
  background: var(--paper-3);
  box-shadow: var(--shadow-hard-sm);
}

.page-contact .need__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-800);
}

.page-contact .need__name {
  margin: 8px 0;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-contact .need__desc {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-950);
}

.page-contact .need__spec {
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid var(--fb-hairline);
  font-size: 11.5px;
  color: var(--muted);
}

.page-contact .need-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-800);
}

/* ---------- 联系渠道 ---------- */
.page-contact .contact-lines {
  padding: 20px 18px;
  border: var(--fb-border);
  background: var(--paper-3);
  box-shadow: 6px 6px 0 var(--ink-950);
}

.page-contact .contact-lines .section__head {
  padding-top: 0;
  border-top: none;
  margin-bottom: 0;
}

.page-contact .contact-lines__grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 900px) {
  .page-contact .contact-lines__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }
}

.page-contact .line-list {
  margin: 20px 0 0;
  padding: 0;
  border-top: var(--fb-border);
}

.page-contact .line-list__row {
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-bottom: 1px solid var(--fb-hairline);
}

@media (min-width: 520px) {
  .page-contact .line-list__row {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

.page-contact .line-list dt {
  font-size: 13px;
  color: var(--muted);
}

.page-contact .line-list dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--ink-900);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .line-note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--ink-800);
}

/* ---------- 处理流程 ---------- */
.page-contact .flow {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow__item {
  position: relative;
  padding: 0 0 28px 44px;
}

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

.page-contact .flow__item::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 24px;
  bottom: 2px;
  width: 2px;
  background: var(--fb-hairline);
}

.page-contact .flow__item:last-child::before {
  display: none;
}

.page-contact .flow__node {
  position: absolute;
  left: 0;
  top: 2px;
  width: 20px;
  height: 20px;
  box-sizing: border-box;
  border: 2px solid var(--ink-950);
  border-radius: 50%;
  background: var(--paper-3);
}

.page-contact .flow__item[data-kind="intake"] .flow__node {
  background: var(--blue);
}

.page-contact .flow__item[data-kind="review"] .flow__node {
  background: var(--accent);
}

.page-contact .flow__item[data-kind="publish"] .flow__node {
  background: var(--ink-900);
}

.page-contact .flow__step {
  margin: 0 0 5px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .flow__name {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-contact .flow__desc {
  margin: 0 0 10px;
  max-width: 34em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-950);
}

.page-contact .flow__out {
  display: inline-block;
  margin: 0;
  padding: 5px 10px;
  border: 1px solid var(--fb-hairline);
  background: var(--paper-2);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.01em;
  color: var(--ink-800);
  transition: background-color var(--t) var(--ease),
    color var(--t) var(--ease),
    border-color var(--t) var(--ease);
}

.page-contact .flow__item:hover .flow__out,
.page-contact .flow__item:focus-within .flow__out {
  border-color: var(--ink-900);
  background: var(--ink-900);
  color: var(--accent);
}

.page-contact .flow-note {
  margin: 22px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-800);
}

/* ---------- 受理边界 ---------- */
.page-contact .reject {
  padding: 20px 18px;
  border: 2px solid var(--red);
  background: var(--paper-3);
}

.page-contact .reject__head {
  margin-bottom: 16px;
}

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

.page-contact .reject__list li {
  display: grid;
  gap: 5px;
  padding: 12px 14px;
  border-left: 4px solid var(--red);
  background: var(--paper-2);
}

.page-contact .reject__list strong {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-contact .reject__list span {
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--ink-950);
}

.page-contact .reject__note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-950);
}

.page-contact .reject__note a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .reject__note a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- 延伸入口 ---------- */
.page-contact .contact-next {
  display: grid;
  gap: 12px;
  margin-top: 48px;
  padding-top: 20px;
  border-top: var(--fb-border);
}

@media (min-width: 640px) {
  .page-contact .contact-next {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-next {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-contact .contact-next__item {
  display: grid;
  gap: 5px;
  padding: 14px 16px;
  border: var(--fb-border);
  background: var(--paper-3);
  box-shadow: var(--shadow-hard-sm);
  color: var(--ink-900);
  text-decoration: none;
  transition: transform var(--t) var(--ease),
    box-shadow var(--t) var(--ease),
    background-color var(--t) var(--ease);
}

.page-contact .contact-next__item:hover,
.page-contact .contact-next__item:focus-visible {
  transform: translate(-3px, -3px);
  box-shadow: 6px 6px 0 var(--ink-950);
  background: var(--ink-900);
  outline: none;
}

.page-contact .contact-next__item:hover .contact-next__k,
.page-contact .contact-next__item:focus-visible .contact-next__k {
  color: var(--accent);
}

.page-contact .contact-next__item:hover .contact-next__v,
.page-contact .contact-next__item:focus-visible .contact-next__v {
  color: var(--paper-2);
}

.page-contact .contact-next__k {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.01em;
  transition: color var(--t) var(--ease);
}

.page-contact .contact-next__v {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
  transition: color var(--t) var(--ease);
}