.page-contact {
  --contact-line: rgba(23, 20, 16, 0.14);
  --contact-line-ink: rgba(255, 255, 255, 0.14);
  background: var(--paper-100);
  color: var(--brown-900);
  font-family: var(--font-sans);
}

.page-contact .container {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: 20px;
}

.page-contact a:focus-visible,
.page-contact button:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 3px;
}

/* ---------- 首屏声明 ---------- */
.page-contact .contact-hero {
  padding: 24px 0 38px;
  border-bottom: 1px solid var(--contact-line);
  background-image: repeating-linear-gradient(
    to right,
    rgba(23, 20, 16, 0.05) 0,
    rgba(23, 20, 16, 0.05) 1px,
    transparent 1px,
    transparent 92px
  );
}

.page-contact .contact-hero .crumbs {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel-500);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.page-contact .contact-hero .crumbs a {
  color: var(--teal-700);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-contact .contact-hero .crumbs a:hover {
  border-color: var(--teal-700);
}

.page-contact .contact-hero .crumbs__sep {
  color: var(--steel-500);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: 22px;
  margin-top: 26px;
}

.page-contact .contact-hero__kicker {
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--teal-700);
}

.page-contact .contact-hero__kicker::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--orange-500);
}

.page-contact h1 {
  margin: 0;
  font-size: clamp(32px, 8vw, 60px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  font-weight: 800;
  font-stretch: condensed;
}

.page-contact .contact-hero__note p {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(23, 20, 16, 0.78);
}

/* ---------- 渠道 + 事务分类 ---------- */
.page-contact .contact-desk {
  background: var(--ink-900);
  color: var(--white-000);
  padding: 42px 0 48px;
  border-bottom: 2px solid var(--cyan-400);
}

.page-contact .desk__title {
  margin: 0 0 28px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.22em;
  font-family: var(--font-mono);
  color: var(--cyan-400);
}

.page-contact .desk__title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--contact-line-ink);
}

.page-contact .desk__grid {
  display: grid;
  gap: 32px;
}

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

.page-contact .chan {
  display: block;
  position: relative;
  padding: 20px 0 20px 0;
  border-top: 1px solid var(--contact-line-ink);
  text-decoration: none;
  color: inherit;
  transition: padding-left var(--dur) var(--ease);
}

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

.page-contact .chan::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: var(--cyan-400);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--dur) var(--ease);
}

.page-contact .chan:hover::before,
.page-contact .chan:focus-visible::before {
  transform: scaleY(1);
}

.page-contact a.chan:hover,
.page-contact a.chan:focus-visible {
  padding-left: 14px;
}

.page-contact .chan__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--steel-500);
  transition: color var(--dur) var(--ease);
}

.page-contact a.chan:hover .chan__label,
.page-contact a.chan:focus-visible .chan__label {
  color: var(--lime-400);
}

.page-contact .chan__value {
  display: block;
  font-size: clamp(19px, 4.6vw, 28px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--white-000);
  overflow-wrap: anywhere;
  transition: color var(--dur) var(--ease);
}

.page-contact a.chan:hover .chan__value,
.page-contact a.chan:focus-visible .chan__value {
  color: var(--cyan-400);
}

.page-contact .chan__meta {
  display: block;
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
}

.page-contact .chan--static .chan__value {
  color: var(--paper-100);
}

/* ---------- 标签页 ---------- */
.page-contact .desk__tabs {
  min-width: 0;
  padding: 18px;
  background: var(--ink-800);
  border: 1px solid rgba(25, 227, 255, 0.28);
}

.page-contact .tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--contact-line-ink);
}

.page-contact .tabs__btn {
  appearance: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: rgba(255, 255, 255, 0.74);
  font-family: inherit;
  font-size: 13px;
  line-height: 1;
  padding: 9px 13px;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-contact .tabs__btn:hover {
  border-color: var(--cyan-400);
  color: var(--white-000);
}

.page-contact .tabs__btn[aria-selected="true"] {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
  color: var(--ink-900);
  font-weight: 700;
}

.page-contact .tabs__panel h3 {
  margin: 0 0 10px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--white-000);
}

.page-contact .tabs__panel p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.72);
}

.page-contact .tabs__panel ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .tabs__panel li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.62);
}

.page-contact .tabs__panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 1px;
  background: var(--lime-400);
}

/* ---------- 响应时间 ---------- */
.page-contact .contact-reply {
  padding: 44px 0;
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .contact-reply__grid {
  display: grid;
  gap: 28px;
}

.page-contact .contact-reply__media {
  margin: 0;
  border: 1px solid var(--contact-line);
  background: var(--paper-200);
  overflow: hidden;
}

.page-contact .contact-reply__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}

.page-contact .contact-reply__body h2 {
  position: relative;
  margin: 0 0 18px;
  padding-top: 16px;
  font-size: clamp(22px, 4.6vw, 32px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-contact .contact-reply__body h2::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 3px;
  background: var(--orange-500);
}

.page-contact .contact-reply__body p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(23, 20, 16, 0.8);
}

.page-contact .reply__check {
  margin: 22px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--contact-line);
  display: grid;
  gap: 10px;
}

.page-contact .reply__check li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--brown-900);
}

.page-contact .reply__check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 11px;
  height: 6px;
  border-left: 2px solid var(--teal-700);
  border-bottom: 2px solid var(--teal-700);
  transform: rotate(-45deg);
}

/* ---------- 地址 ---------- */
.page-contact .contact-place {
  padding: 44px 0;
  background: var(--paper-200);
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .place__card {
  display: grid;
  gap: 0;
  border: 1px solid var(--contact-line);
  background: var(--paper-100);
}

.page-contact .place__text {
  padding: 26px 20px 28px;
}

.page-contact .place__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--teal-700);
}

.page-contact .place__text h2 {
  margin: 0 0 16px;
  font-size: clamp(20px, 4vw, 26px);
  line-height: 1.3;
  font-weight: 700;
}

.page-contact .place__addr {
  margin: 0 0 16px;
  font-size: clamp(21px, 5vw, 30px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink-900);
  border-left: 4px solid var(--cyan-400);
  padding-left: 14px;
}

.page-contact .place__desc {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(23, 20, 16, 0.78);
  max-width: 40ch;
}

.page-contact .place__meta {
  margin: 0;
  display: inline-block;
  padding: 6px 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--teal-700);
  border: 1px solid rgba(14, 95, 107, 0.35);
  background: rgba(25, 227, 255, 0.08);
}

.page-contact .place__media {
  margin: 0;
  padding: 0;
  min-height: 200px;
  overflow: hidden;
}

.page-contact .place__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  min-height: 200px;
  object-fit: cover;
}

/* ---------- 合作准备 ---------- */
.page-contact .contact-brief {
  padding: 46px 0;
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .brief__grid {
  display: grid;
  gap: 28px;
}

.page-contact .brief__head h2 {
  margin: 0 0 14px;
  font-size: clamp(22px, 4.6vw, 32px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-contact .brief__head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(23, 20, 16, 0.78);
  max-width: 42ch;
}

.page-contact .brief__list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
  display: grid;
  gap: 0;
}

.page-contact .brief__list li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--contact-line);
}

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

.page-contact .brief__num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange-500);
  padding-top: 3px;
}

.page-contact .brief__item h3 {
  margin: 0 0 7px;
  font-size: 16px;
  line-height: 1.4;
  font-weight: 700;
}

.page-contact .brief__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(23, 20, 16, 0.74);
}

/* ---------- 快捷返回 ---------- */
.page-contact .contact-return {
  padding: 38px 0 46px;
  background: var(--ink-900);
  color: var(--white-000);
}

.page-contact .return__title {
  margin: 0 0 20px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--steel-500);
}

.page-contact .return__links {
  display: grid;
  gap: 2px;
}

.page-contact .return__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 4px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white-000);
  text-decoration: none;
  border-bottom: 1px solid var(--contact-line-ink);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-contact .return__link::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--cyan-400);
  transition: transform var(--dur) var(--ease);
}

.page-contact .return__link:hover,
.page-contact .return__link:focus-visible {
  color: var(--cyan-400);
  padding-left: 12px;
}

.page-contact .return__link:hover::after,
.page-contact .return__link:focus-visible::after {
  transform: translateX(4px);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-hero {
    padding: 30px 0 48px;
  }

  .page-contact .contact-reply,
  .page-contact .contact-place,
  .page-contact .contact-brief {
    padding: 56px 0;
  }

  .page-contact .place__text {
    padding: 34px 30px 36px;
  }

  .page-contact .return__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }
}

@media (min-width: 880px) {
  .page-contact .container {
    padding-inline: 32px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: end;
    gap: 44px;
  }

  .page-contact .contact-hero__note {
    padding-left: 28px;
    border-left: 1px solid var(--contact-line);
    padding-bottom: 6px;
  }

  .page-contact .desk__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .desk__tabs {
    padding: 24px;
  }

  .page-contact .contact-reply__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: center;
    gap: 48px;
  }

  .page-contact .reply__check {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 24px;
  }

  .page-contact .place__card {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
  }

  .page-contact .place__text {
    padding: 42px 38px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .page-contact .place__media {
    min-height: 100%;
    border-left: 1px solid var(--contact-line);
  }

  .page-contact .place__media img {
    min-height: 100%;
  }

  .page-contact .brief__grid {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    gap: 52px;
    align-items: start;
  }

  .page-contact .brief__head {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (min-width: 1024px) {
  .page-contact .container {
    padding-inline: var(--rail, 18px);
    max-width: 1120px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .chan,
  .page-contact .chan::before,
  .page-contact .chan__value,
  .page-contact .chan__label,
  .page-contact .tabs__btn,
  .page-contact .return__link,
  .page-contact .return__link::after {
    transition: none;
  }
}