.page-contact {
  --contact-cut: 14px;
  --contact-line: var(--paper-200);
}

.page-contact ::selection {
  background: var(--accent-100);
  color: var(--ink-900);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: 22px 0 26px;
  border-bottom: 1px solid var(--ink-900);
}

.page-contact .contact-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent-600);
  margin: 0;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--ink-900);
  margin: 10px 0 14px;
}

.page-contact .contact-hero__lede {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-900);
  margin: 0;
  max-width: 40em;
}

/* ---------- 索引带 ---------- */
.page-contact .contact-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .contact-strip__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent-600);
}

.page-contact .contact-strip__text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-500);
}

/* ---------- 主框架 ---------- */
.page-contact .contact-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  padding-top: 34px;
}

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

/* ---------- 章节 ---------- */
.page-contact .contact-part {
  margin-bottom: 64px;
  scroll-margin-top: 84px;
}

.page-contact .contact-part__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--ink-900);
}

.page-contact .contact-part__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--accent-600);
}

.page-contact .contact-part__title {
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink-900);
  margin: 0;
}

.page-contact .contact-scale {
  height: 5px;
  margin-top: 8px;
  background-image: repeating-linear-gradient(90deg, var(--ink-500) 0 1px, transparent 1px 9px);
  background-size: 9px 5px;
  opacity: 0.4;
}

.page-contact .contact-part__intro {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-900);
  margin: 18px 0 22px;
  max-width: 38em;
}

/* ---------- 01 联系标签 ---------- */
.page-contact .channels {
  display: grid;
  gap: 20px;
}

.page-contact .contact-tags {
  display: grid;
  gap: 16px;
}

.page-contact .tagbox {
  position: relative;
  border: 1px solid var(--ink-900);
  background: var(--paper-0);
  padding: 18px 20px 16px;
  transition: background-color var(--t-fast), border-color var(--t-fast);
}

.page-contact .tagbox::after {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: var(--contact-cut);
  height: var(--contact-cut);
  background: var(--paper-0);
  border-right: 1px solid var(--ink-900);
  border-bottom: 1px solid var(--ink-900);
  transition: background-color var(--t-fast);
}

.page-contact .tagbox:hover,
.page-contact .tagbox:focus-within {
  background: var(--accent-100);
  border-color: var(--accent-600);
}

.page-contact .tagbox:hover::after,
.page-contact .tagbox:focus-within::after {
  background: var(--accent-100);
  border-color: var(--accent-600);
}

.page-contact .tagbox__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-500);
  margin: 0 0 8px;
}

.page-contact .tagbox__val {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.55;
  letter-spacing: 0.01em;
  color: var(--ink-900);
  margin: 0 0 8px;
  word-break: break-all;
  -webkit-user-select: all;
  user-select: all;
}

.page-contact .tagbox__use {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-500);
  margin: 0;
}

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

.page-contact .contact-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--ink-900);
  background: var(--paper-200);
  object-fit: cover;
}

.page-contact .contact-figure__cap {
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-500);
  margin-top: 8px;
}

.page-contact .contact-figure--wide {
  margin-top: 26px;
}

/* ---------- 02 对照表 ---------- */
.page-contact .routing {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
  font-size: 15px;
}

.page-contact .routing caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-500);
  padding-bottom: 8px;
}

.page-contact .routing th,
.page-contact .routing td {
  text-align: left;
  vertical-align: top;
  line-height: 1.75;
  padding: 13px 0 13px 12px;
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .routing thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--ink-500);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--ink-900);
}

.page-contact .routing__type {
  position: relative;
  width: 30%;
  min-width: 5.5em;
  font-weight: 600;
  color: var(--ink-900);
}

.page-contact .routing__type::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: var(--accent-600);
  opacity: 0;
  transition: opacity var(--t-fast);
}

.page-contact .routing__row:hover .routing__type::before,
.page-contact .routing__row:focus-within .routing__type::before {
  opacity: 1;
}

.page-contact .routing__route {
  color: var(--ink-900);
}

.page-contact .contact-link {
  color: var(--rule-700);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-thickness var(--t-fast), color var(--t-fast);
}

.page-contact .contact-link:hover {
  text-decoration-thickness: 2px;
}

/* ---------- 03 更正清单 ---------- */
.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  border-top: 1px solid var(--contact-line);
  padding: 14px 0;
}

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

.page-contact .checklist__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent-600);
  padding-top: 3px;
}

.page-contact .checklist__title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink-900);
  margin: 0 0 4px;
}

.page-contact .checklist__body p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-500);
  margin: 0;
}

/* ---------- 04 合作口径 ---------- */
.page-contact .coop {
  display: grid;
  gap: 24px;
}

.page-contact .coop__col {
  border-top: 2px solid var(--teal-700);
  padding-top: 14px;
}

.page-contact .coop__col--no {
  border-top-color: var(--warn-600);
}

.page-contact .coop__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--teal-700);
  margin: 0 0 12px;
}

.page-contact .coop__col--no .coop__title {
  color: var(--warn-600);
}

.page-contact .coop__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .coop__list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-900);
}

.page-contact .coop__list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--teal-700);
}

.page-contact .coop__col--no .coop__list li::before {
  content: "×";
  color: var(--warn-600);
}

/* ---------- 05 时效 ---------- */
.page-contact .timing {
  margin: 0;
  display: grid;
}

.page-contact .timing__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  border-top: 1px solid var(--contact-line);
  padding: 13px 0;
}

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

.page-contact .timing__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent-600);
  margin: 0;
}

.page-contact .timing__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-900);
}

.page-contact .contact-fineprint {
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-500);
  margin: 22px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--contact-line);
}

/* ---------- 旁注列 ---------- */
.page-contact .contact-aside {
  display: grid;
  align-content: start;
  gap: 0;
}

.page-contact .contact-aside__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-500);
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--ink-900);
}

.page-contact .aside-block {
  border-left: 2px solid var(--accent-600);
  padding: 2px 0 2px 12px;
  margin: 0 0 16px;
}

.page-contact .aside-block__summary {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink-900);
  cursor: pointer;
  list-style: none;
}

.page-contact .aside-block__summary::-webkit-details-marker {
  display: none;
}

.page-contact .aside-block__summary::after {
  content: " ＋";
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-500);
}

.page-contact .aside-block[open] .aside-block__summary::after {
  content: " －";
  color: var(--accent-600);
}

.page-contact .aside-block__summary:hover {
  color: var(--accent-600);
}

.page-contact .aside-block__text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-500);
  margin: 8px 0 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .coop {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .page-contact .timing__row {
    grid-template-columns: minmax(0, 148px) minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }

  .page-contact .timing__key {
    padding-top: 3px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    padding: 26px 0 32px;
  }

  .page-contact .contact-hero h1 {
    font-size: 34px;
  }

  .page-contact .contact-part {
    margin-bottom: 88px;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-shell {
    grid-template-columns: minmax(0, var(--col-main)) var(--col-note);
    column-gap: 56px;
    padding-top: 40px;
  }

  .page-contact .contact-aside {
    position: sticky;
    top: 96px;
    align-self: start;
  }
}

@media (min-width: 1040px) {
  .page-contact .channels {
    grid-template-columns: minmax(0, 1fr) 236px;
    gap: 26px;
    align-items: start;
  }
}
<<<END>>>