.page-contact {
  --contact-radius: 0;
  background: var(--pitch-900);
  color: var(--text);
  overflow-x: hidden;
}

.page-contact .section {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
}

.page-contact .section--tight {
  padding-top: calc(var(--section-y) * 0.62);
  padding-bottom: calc(var(--section-y) * 0.62);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--text-mute);
  margin-bottom: clamp(22px, 3.4vw, 40px);
}

.page-contact .breadcrumbs a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(28px, 4.5vw, 56px);
  padding-bottom: clamp(44px, 6vw, 88px);
  background:
    linear-gradient(158deg, var(--pitch-800) 0%, var(--pitch-900) 46%, var(--pitch-900) 100%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: auto -18% -34% 34%;
  height: clamp(200px, 32vw, 400px);
  background: linear-gradient(118deg, rgba(59, 240, 196, .17), rgba(59, 240, 196, 0) 64%);
  transform: skewY(-7deg);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(59, 240, 196, .5), rgba(30, 68, 54, .2) 55%, transparent);
  pointer-events: none;
}

.page-contact .contact-hero__layout {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-contact .contact-hero__intro {
  max-width: 62ch;
}

.page-contact .contact-hero__intro .display {
  margin: 14px 0 18px;
  color: var(--warm);
}

.page-contact .contact-hero__intro .lede {
  color: var(--text-dim);
  max-width: 50ch;
}

.page-contact .contact-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .contact-hero__media {
  position: relative;
  clip-path: polygon(0 6%, 100% 0, 100% 100%, 0 94%);
}

/* ---------- 图片容器 ---------- */
.page-contact .media-frame {
  background: var(--pitch-800);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-contact .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .media-frame--wide .media-frame__img {
  aspect-ratio: 7 / 4;
}

.page-contact .media-frame--square .media-frame__img {
  aspect-ratio: 3 / 2;
}

.page-contact .media-frame__caption {
  display: block;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--text-mute);
  border-top: 1px solid var(--line);
}

/* ---------- 联络渠道 ---------- */
.page-contact .channel-layout {
  align-items: start;
}

.page-contact .channel-list {
  list-style: none;
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .channel {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 2.8vw, 30px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .channel__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--text-mute);
}

.page-contact .channel__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(19px, 3.2vw, 34px);
  line-height: 1.25;
  color: var(--cyan);
  letter-spacing: -.01em;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .channel__note {
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-contact .channel-aside {
  display: grid;
  gap: var(--gap);
  margin-top: clamp(28px, 4vw, 12px);
}

.page-contact .addr-card {
  display: grid;
  gap: 10px;
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(152deg, var(--pitch-700) 0%, var(--pitch-800) 100%);
  border: 1px solid var(--line);
}

.page-contact .addr-card__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--text-mute);
}

.page-contact .addr-card__value {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(16px, 1.9vw, 20px);
  line-height: 1.7;
  color: var(--warm);
}

.page-contact .addr-card__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-mute);
}

/* ---------- 四类请求 ---------- */
.page-contact .request-grid {
  display: grid;
  border-top: 1px solid var(--line);
}

.page-contact .request {
  border-bottom: 1px solid var(--line);
  transition: background var(--dur) var(--ease);
}

.page-contact .request:hover {
  background: rgba(18, 51, 38, .5);
}

.page-contact .request__trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "index title icon"
    "index summary icon";
  column-gap: 14px;
  row-gap: 6px;
  align-items: start;
  padding: clamp(20px, 2.8vw, 30px) clamp(16px, 2.2vw, 26px);
  background: none;
  border: 0;
  border-left: 2px solid transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease);
}

.page-contact .request__trigger:hover,
.page-contact .request__trigger:focus-visible {
  border-left-color: var(--cyan);
}

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

.page-contact .request__index {
  grid-area: index;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--cyan);
  padding-top: 4px;
}

.page-contact .request__title {
  grid-area: title;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(18px, 2.1vw, 22px);
  line-height: 1.4;
  color: var(--warm);
  transition: color var(--dur) var(--ease);
}

.page-contact .request:hover .request__title {
  color: var(--cyan-soft);
}

.page-contact .request__summary {
  grid-area: summary;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-mute);
}

.page-contact .request__trigger .disclosure__icon {
  grid-area: icon;
  align-self: center;
}

.page-contact .request__body {
  padding: 0 clamp(16px, 2.2vw, 26px) clamp(22px, 2.8vw, 30px) clamp(38px, 5vw, 58px);
}

.page-contact .request__body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-contact .request__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 提交前准备 ---------- */
.page-contact .checklist-tip {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 16px 18px;
  border-left: 2px solid var(--amber);
  background: rgba(240, 178, 60, .07);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

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

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: clamp(18px, 2.4vw, 24px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .checklist__index {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
}

.page-contact .checklist__title {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.5;
  color: var(--warm);
}

.page-contact .checklist__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-dim);
}

/* ---------- 回复节奏 ---------- */
.page-contact .rhythm-timeline {
  margin-top: clamp(26px, 3.6vw, 44px);
  border-left: 1px solid var(--line);
  list-style: none;
  padding-left: 0;
}

.page-contact .rhythm-timeline__title {
  margin: 0 0 8px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.5;
  color: var(--warm);
}

.page-contact .rhythm-timeline .timeline__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-dim);
  max-width: 58ch;
}

.page-contact .rhythm-timeline .timeline__meta {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan);
}

/* ---------- 收尾 ---------- */
.page-contact .contact-cta {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  padding: clamp(26px, 3.6vw, 46px);
  background:
    linear-gradient(148deg, rgba(59, 240, 196, .1) 0%, rgba(12, 36, 24, .9) 58%),
    var(--pitch-800);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
}

.page-contact .contact-cta__text h2 {
  margin: 0 0 12px;
  color: var(--warm);
}

.page-contact .contact-cta__text p {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.88;
  color: var(--text-dim);
}

.page-contact .contact-cta__text a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(166, 247, 224, .45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .contact-cta__text a:hover,
.page-contact .contact-cta__text a:focus-visible {
  color: var(--warm);
  border-bottom-color: var(--cyan);
}

.page-contact .contact-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(18px, 2.4vw, 30px);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

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

  .page-contact .contact-cta__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (min-width: 960px) {
  .page-contact .request-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .request:nth-child(2n) {
    border-right: 0;
  }
}

@media (max-width: 519px) {
  .page-contact .channel__value {
    font-size: 18px;
  }

  .page-contact .contact-hero__media {
    clip-path: none;
  }

  .page-contact .request__trigger {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "title icon"
      "summary icon";
  }

  .page-contact .request__index {
    display: none;
  }

  .page-contact .request__body {
    padding-left: clamp(16px, 2.2vw, 26px);
  }
}