.page-contact {
  --contact-line: rgba(20, 22, 26, 0.14);
  --contact-line-soft: rgba(20, 22, 26, 0.08);
  --contact-ink-soft: rgba(247, 243, 236, 0.14);
  background: var(--paper);
  color: var(--ink);
  padding-bottom: 72px;
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 26px 0 0;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--charcoal);
}

.page-contact .breadcrumbs a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--fog);
}

.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: 22px 0 8px;
}

.page-contact .contact-hero h1 {
  max-width: 24ch;
  margin: 14px 0 18px;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(1.85rem, 6.6vw, 3.4rem);
  line-height: 1.16;
  letter-spacing: -0.015em;
}

.page-contact .contact-hero__lead {
  max-width: 62ch;
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--charcoal);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: 22px;
  margin-top: 30px;
}

.page-contact .contact-hero__grid > * {
  min-width: 0;
}

/* 联系信息卡 */
.page-contact .contact-card {
  position: relative;
  padding: 26px 20px 20px;
  overflow: hidden;
  background: linear-gradient(158deg, #21252C 0%, var(--ink) 52%, #0C0E11 100%);
  color: var(--paper);
  border: 1px solid rgba(201, 162, 39, 0.34);
  border-radius: var(--radius);
  box-shadow: 0 26px 52px -36px rgba(20, 22, 26, 0.95);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red) 0%, var(--gold) 58%, rgba(201, 162, 39, 0) 100%);
}

.page-contact .contact-card__title {
  margin: 0 0 6px;
  font-family: var(--sans);
  font-weight: 700;
  font-size: var(--fs-12);
  letter-spacing: 0.24em;
  color: var(--gold-light);
}

.page-contact .contact-card__list {
  margin: 0;
}

.page-contact .contact-card__row {
  padding: 14px 0;
  border-bottom: 1px solid var(--contact-ink-soft);
}

.page-contact .contact-card__row:last-child {
  padding-bottom: 2px;
  border-bottom: 0;
}

.page-contact .contact-card__row dt {
  margin-bottom: 7px;
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: rgba(247, 243, 236, 0.58);
}

.page-contact .contact-card__row dd {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
}

.page-contact .contact-card__value {
  font-family: var(--mono);
  font-size: var(--fs-18);
  line-height: 1.5;
  color: var(--paper);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.page-contact .contact-card__value--mail {
  font-size: var(--fs-14);
  color: var(--gold-light);
  border-bottom: 1px solid rgba(232, 217, 168, 0.4);
}

.page-contact .contact-card__value--plain {
  font-family: var(--sans);
  font-size: var(--fs-14);
  line-height: 1.7;
  color: rgba(247, 243, 236, 0.9);
}

.page-contact a.contact-card__value:hover,
.page-contact a.contact-card__value:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-contact .contact-card__hint {
  font-size: var(--fs-12);
  color: rgba(247, 243, 236, 0.5);
}

.page-contact .contact-card__copy {
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
}

/* 首屏右侧 */
.page-contact .contact-hero__visual {
  display: grid;
  gap: 16px;
}

.page-contact .contact-hero__media {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--radius);
}

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

.page-contact .contact-steps {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--charcoal);
  background: var(--paper-deep);
  border-left: 2px solid var(--gold);
}

.page-contact .contact-steps__item:nth-child(2) {
  border-left-color: var(--red);
}

.page-contact .contact-steps__num {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--red);
}

/* ---------- 通用小标题 ---------- */
.page-contact .sec-title {
  margin: 10px 0 12px;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.6vw, 2.25rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

/* ---------- 合作方向 ---------- */
.page-contact .coop {
  padding: 56px 0 8px;
}

.page-contact .coop__head {
  max-width: 64ch;
  margin-bottom: 26px;
}

.page-contact .coop__lead {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--charcoal);
}

.page-contact .coop__grid {
  border-top: 1px solid var(--contact-line);
}

.page-contact .coop-item {
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .coop-item > summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.2s var(--ease);
}

.page-contact .coop-item > summary::-webkit-details-marker {
  display: none;
}

.page-contact .coop-item > summary::after {
  content: "＋";
  order: 5;
  margin-left: 4px;
  font-size: var(--fs-16);
  line-height: 1;
  color: var(--red);
}

.page-contact .coop-item[open] > summary::after {
  content: "－";
}

.page-contact .coop-item > summary:hover,
.page-contact .coop-item > summary:focus-visible {
  background: rgba(201, 162, 39, 0.08);
}

.page-contact .coop-item__num {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-contact .coop-item__name {
  flex: 1 1 auto;
  font-family: var(--sans);
  font-weight: 700;
  font-size: var(--fs-18);
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-contact .coop-item__body {
  padding: 0 2px 22px;
}

.page-contact .coop-item__body p {
  margin: 0 0 12px;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--charcoal);
}

.page-contact .coop-item__body ul {
  margin: 0;
  padding-left: 1.1em;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--charcoal);
}

.page-contact .coop__figure {
  margin: 30px 0 0;
}

.page-contact .coop__figure-frame {
  aspect-ratio: 2 / 1;
  overflow: hidden;
  border-radius: var(--radius);
}

.page-contact .coop__figure-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .coop__caption {
  margin-top: 12px;
  font-size: var(--fs-12);
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--charcoal);
}

/* ---------- 邮件书写建议 ---------- */
.page-contact .mail {
  padding: 56px 0 8px;
}

.page-contact .mail__grid {
  display: grid;
  gap: 26px;
}

.page-contact .mail__grid > * {
  min-width: 0;
}

.page-contact .mail__lead {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--charcoal);
}

.page-contact .check {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--contact-line);
}

.page-contact .check__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 12px;
  padding: 14px 6px 14px 0;
  border-bottom: 1px dashed var(--contact-line-soft);
  cursor: pointer;
  transition: background-color 0.2s var(--ease);
}

.page-contact .check__item:hover {
  background: rgba(201, 162, 39, 0.07);
}

.page-contact .check__item input {
  width: 1.05em;
  height: 1.05em;
  margin: 5px 0 0;
  accent-color: var(--red);
}

.page-contact .check__text {
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--charcoal);
}

.page-contact .check__text strong {
  font-weight: 700;
  color: var(--ink);
}

.page-contact .check__item input:checked ~ .check__text {
  color: rgba(42, 46, 53, 0.62);
}

.page-contact .mail__side {
  padding: 22px 20px;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-deep) 100%);
}

.page-contact .mail__side-title {
  margin: 0 0 10px;
  font-family: var(--sans);
  font-weight: 700;
  font-size: var(--fs-12);
  letter-spacing: 0.2em;
  color: var(--red);
}

.page-contact .mail__subject {
  margin: 0 0 14px;
  padding: 11px 12px;
  font-size: var(--fs-14);
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--gold-light);
  background: var(--ink);
  border-radius: var(--radius);
  box-shadow: inset 2px 0 0 var(--red);
  overflow-wrap: anywhere;
}

.page-contact .mail__side p {
  margin: 0 0 14px;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--charcoal);
}

.page-contact .mail__side p:last-of-type {
  margin-bottom: 18px;
}

.page-contact .mail__cta {
  display: inline-block;
  text-decoration: none;
}

/* ---------- 服务时间与响应 ---------- */
.page-contact .reply {
  padding: 56px 0 8px;
}

.page-contact .reply__track {
  display: grid;
  gap: 0;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .reply__step {
  position: relative;
  margin-left: 4px;
  padding: 0 0 24px 20px;
  border-left: 1px solid var(--contact-line);
}

.page-contact .reply__step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .reply__step::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 4px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--red);
}

.page-contact .reply__time {
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--red);
}

.page-contact .reply__name {
  margin: 8px 0 8px;
  font-family: var(--sans);
  font-weight: 700;
  font-size: var(--fs-18);
  color: var(--ink);
}

.page-contact .reply__step p {
  margin: 0;
  max-width: 44ch;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--charcoal);
}

/* ---------- 地址与备案 ---------- */
.page-contact .addr {
  padding: 56px 0 8px;
}

.page-contact .addr__grid {
  display: grid;
  gap: 20px;
}

.page-contact .addr__grid > * {
  min-width: 0;
}

.page-contact .addr__card {
  padding: 26px 20px;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius);
  background: var(--paper-deep);
}

.page-contact .addr__text {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-style: normal;
  font-weight: 700;
  font-size: var(--fs-18);
  line-height: 1.7;
  color: var(--ink);
}

.page-contact .addr__list {
  margin: 0;
}

.page-contact .addr__list > div {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--contact-line-soft);
}

.page-contact .addr__list dt {
  min-width: 5.5em;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--charcoal);
}

.page-contact .addr__list dd {
  margin: 0;
  font-family: var(--mono);
  font-size: var(--fs-14);
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .addr__map {
  min-height: 190px;
  overflow: hidden;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius);
  background: var(--ink);
}

.page-contact .addr__map svg {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 190px;
}

/* ---------- 接着看 ---------- */
.page-contact .next {
  padding: 52px 0 0;
}

.page-contact .next__list {
  display: grid;
  gap: 0;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--contact-line);
}

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

.page-contact .next__link {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 18px;
  padding: 14px 2px;
  text-decoration: none;
  transition: background-color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-contact .next__link:hover,
.page-contact .next__link:focus-visible {
  padding-left: 10px;
  background: rgba(200, 16, 46, 0.06);
}

.page-contact .next__label {
  font-family: var(--sans);
  font-weight: 700;
  font-size: var(--fs-18);
  color: var(--ink);
}

.page-contact .next__link:hover .next__label,
.page-contact .next__link:focus-visible .next__label {
  color: var(--red);
}

.page-contact .next__meta {
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--charcoal);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}

@media (min-width: 860px) {
  .page-contact .reply__track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--contact-line);
  }

  .page-contact .reply__step {
    margin-left: 0;
    padding: 28px 26px 0 0;
    border-left: 0;
  }

  .page-contact .reply__step::before {
    left: 0;
    top: -5px;
  }

  .page-contact .reply__step:last-child {
    padding-right: 0;
  }

  .page-contact .addr__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 28px;
    align-items: stretch;
  }
}

@media (min-width: 920px) {
  .page-contact .contact-hero {
    padding-top: 28px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 40px;
    align-items: start;
    margin-top: 36px;
  }

  .page-contact .contact-card {
    padding: 30px 26px 24px;
  }

  .page-contact .coop__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-bottom: 1px solid var(--contact-line);
  }

  .page-contact .coop-item {
    border-bottom: 0;
    border-right: 1px solid var(--contact-line);
    padding-right: 22px;
  }

  .page-contact .coop-item:first-child {
    padding-left: 0;
  }

  .page-contact .coop-item:last-child {
    border-right: 0;
    padding-right: 0;
  }

  .page-contact .coop-item:not(:first-child) {
    padding-left: 22px;
  }

  .page-contact .coop-item > summary {
    padding: 22px 2px;
  }

  .page-contact .mail__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 46px;
    align-items: start;
  }

  .page-contact .mail__side {
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .coop-item > summary,
  .page-contact .check__item,
  .page-contact .next__link {
    transition: none;
  }
}