.page-contact {
  --c-line: rgba(67, 167, 147, 0.24);
  --c-line-soft: rgba(67, 167, 147, 0.12);
  --c-body: rgba(241, 244, 243, 0.78);
  background: var(--ink);
  color: var(--c-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: calc(var(--unit) * 1.4) 0 calc(var(--unit) * 1.2);
  background:
    radial-gradient(120% 90% at 86% 6%, rgba(31, 122, 106, 0.3), transparent 62%),
    radial-gradient(90% 70% at 4% 98%, rgba(255, 107, 26, 0.1), transparent 60%),
    var(--ink);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(23, 54, 74, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(23, 54, 74, 0.55) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 88%);
  pointer-events: none;
}

.page-contact .contact-hero > .container {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  margin-bottom: calc(var(--unit) * 0.9);
}

.page-contact .breadcrumbs__item {
  color: var(--graphite);
  text-decoration: none;
}

.page-contact a.breadcrumbs__item:hover {
  color: var(--jade-2);
}

.page-contact .breadcrumbs__item[aria-current="page"] {
  color: var(--jade-2);
}

.page-contact .breadcrumbs__sep {
  color: rgba(133, 152, 166, 0.5);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: calc(var(--unit) * 0.9);
  align-items: start;
}

.page-contact .contact-hero__title {
  margin: 0.3em 0 0.55em;
  font-size: clamp(2.05rem, 7.4vw, 4.2rem);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: var(--mist);
}

.page-contact .contact-hero__title::after {
  content: "";
  display: block;
  width: 78px;
  height: 9px;
  margin-top: 1.2rem;
  background: linear-gradient(100deg, var(--flare) 0 44%, var(--jade) 44% 100%);
  clip-path: polygon(0 0, 100% 0, calc(100% - 11px) 100%, 0 100%);
}

.page-contact .contact-hero__lede {
  max-width: 54ch;
  color: var(--c-body);
}

.page-contact .contact-direct {
  margin-top: calc(var(--unit) * 1.1);
  border-top: 1px solid var(--c-line);
}

.page-contact .contact-direct__item {
  display: grid;
  gap: 0.5rem;
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .contact-direct__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--jade-2);
}

.page-contact .contact-direct__value {
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: clamp(1.55rem, 7.2vw, 2.85rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-contact .contact-direct__value--mail {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(0.95rem, 3.6vw, 1.35rem);
  letter-spacing: -0.01em;
}

.page-contact .contact-direct__item--accent {
  position: relative;
}

.page-contact .contact-direct__item--accent::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 3px;
  height: calc(100% - 42px);
  background: var(--flare);
}

.page-contact .contact-direct__item--accent .contact-direct__value {
  color: var(--flare);
  padding-left: 16px;
}

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

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

.page-contact .media-frame__caption {
  color: var(--graphite);
}

/* ---------- 主体两栏 ---------- */
.page-contact .contact-body {
  border-top: 1px solid var(--c-line);
  background: var(--ink);
  padding: calc(var(--unit) * 0.8) 0 calc(var(--unit) * 1.6);
}

.page-contact .contact-body__grid {
  display: grid;
  gap: calc(var(--unit) * 0.9);
}

.page-contact .contact-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--graphite);
}

.page-contact .contact-rail__list {
  display: flex;
  gap: 18px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-contact .contact-rail__list::-webkit-scrollbar {
  display: none;
}

.page-contact .contact-rail__link {
  display: block;
  white-space: nowrap;
  padding-bottom: 5px;
  border-bottom: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.12em;
  color: var(--graphite);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .contact-rail__link:hover {
  color: var(--mist);
}

.page-contact .contact-rail__link[data-active] {
  color: var(--jade-2);
  border-bottom-color: var(--jade-2);
}

/* ---------- 章节 ---------- */
.page-contact .contact-stream {
  min-width: 0;
}

.page-contact .contact-section {
  padding: calc(var(--unit) * 1.2) 0;
  border-top: 1px solid var(--c-line-soft);
}

.page-contact .contact-section:first-child {
  padding-top: 0;
  border-top: none;
}

.page-contact .contact-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 0.9rem;
}

.page-contact .contact-section__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  flex: 0 0 auto;
}

.page-contact .contact-section__title {
  margin: 0;
  font-size: clamp(1.45rem, 5.2vw, 2.35rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--mist);
}

.page-contact .prose {
  max-width: 62ch;
  margin: 0 0 1.2rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-body);
}

/* ---------- 渠道 ---------- */
.page-contact .contact-channels {
  display: grid;
  gap: calc(var(--unit) * 0.85);
  margin-top: calc(var(--unit) * 0.7);
}

.page-contact .contact-channel {
  padding-top: 18px;
  border-top: 2px solid var(--jade);
}

.page-contact .contact-channel--urgent {
  border-top-color: var(--flare);
}

.page-contact .contact-channel__title {
  margin: 0 0 0.85rem;
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-contact .contact-channel__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.72rem;
}

.page-contact .contact-channel__list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.94rem;
  line-height: 1.72;
}

.page-contact .contact-channel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1px;
  background: var(--jade-2);
}

.page-contact .contact-channel--urgent .contact-channel__list li::before {
  background: var(--flare);
}

.page-contact .contact-hours {
  margin: calc(var(--unit) * 0.8) 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.8;
  letter-spacing: 0.04em;
  color: var(--graphite);
}

/* ---------- 数据问题 ---------- */
.page-contact .prep-grid {
  display: grid;
  gap: calc(var(--unit) * 0.85);
  align-items: start;
}

.page-contact .prep-grid__figure {
  margin: 0;
}

.page-contact .prep-grid__hint {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--jade-2);
}

.page-contact .checklist {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  border-top: 1px solid var(--c-line);
}

.page-contact .checklist__input {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  margin: 16px 0 0;
  border: 1px solid var(--jade-2);
  background: transparent;
  cursor: pointer;
  position: relative;
}

.page-contact .checklist__input:checked {
  background: var(--flare);
  border-color: var(--flare);
}

.page-contact .checklist__input:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 11px;
  border-right: 2px solid var(--warm);
  border-bottom: 2px solid var(--warm);
  transform: rotate(40deg);
}

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

.page-contact .checklist__label {
  flex: 1 1 calc(100% - 34px);
  margin-left: 16px;
  padding: 15px 0;
  border-bottom: 1px solid var(--c-line);
  font-size: 0.94rem;
  line-height: 1.68;
  color: var(--mist);
  cursor: pointer;
}

.page-contact .checklist__ready {
  flex: 0 0 100%;
  display: none;
  margin: 20px 0 0;
  padding: 15px 18px;
  border-left: 3px solid var(--flare);
  background: rgba(255, 107, 26, 0.09);
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .checklist__input:checked ~ .checklist__input:checked ~ .checklist__input:checked ~ .checklist__input:checked ~ .checklist__ready {
  display: block;
}

/* ---------- 合作 ---------- */
.page-contact .coop-lines {
  margin: 0 0 calc(var(--unit) * 0.7);
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--c-line);
}

.page-contact .coop-line {
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .coop-line__title {
  margin: 0 0 0.5rem;
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--jade-2);
}

.page-contact .coop-line__desc {
  margin: 0;
  max-width: 64ch;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--c-body);
}

.page-contact .coop-picker {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: calc(var(--unit) * 0.5);
}

.page-contact .coop-picker__hint {
  flex: 0 0 100%;
  margin: 0 0 4px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--graphite);
}

.page-contact .coop-picker__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .coop-picker__label {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border: 1px solid var(--c-line);
  font-size: 0.88rem;
  color: var(--graphite);
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-contact .coop-picker__label:hover {
  color: var(--mist);
  border-color: var(--jade-2);
}

.page-contact .coop-picker__input:focus-visible + .coop-picker__label {
  outline: 2px solid var(--jade-2);
  outline-offset: 2px;
}

.page-contact .coop-picker__input:checked + .coop-picker__label {
  border-color: var(--flare);
  background: rgba(255, 107, 26, 0.12);
  color: var(--warm);
}

.page-contact .coop-picker__format {
  flex: 0 0 100%;
  display: none;
  margin-top: 6px;
  padding: 15px 18px;
  border-left: 2px solid var(--jade);
  background: rgba(31, 122, 106, 0.14);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.78;
  letter-spacing: 0.02em;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-contact #coop-venue:checked ~ .coop-picker__format--venue,
.page-contact #coop-media:checked ~ .coop-picker__format--media,
.page-contact #coop-creator:checked ~ .coop-picker__format--creator,
.page-contact #coop-community:checked ~ .coop-picker__format--community {
  display: block;
}

/* ---------- 地址 ---------- */
.page-contact .visit-lines {
  display: grid;
  gap: 0;
  margin-bottom: 1.4rem;
  border-top: 1px solid var(--c-line);
}

.page-contact .visit-line {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .visit-line__key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--jade-2);
}

.page-contact .visit-line__val {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.68;
  letter-spacing: 0.02em;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-contact .visit-note {
  margin-bottom: 1.2rem;
}

.page-contact .visit-links,
.page-contact .issue-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin: 0;
}

.page-contact .visit-link {
  position: relative;
  padding-bottom: 3px;
  font-size: 0.9rem;
  color: var(--jade-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(67, 167, 147, 0.4);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .visit-link:hover {
  color: var(--mist);
  border-bottom-color: var(--flare);
}

/* ---------- 反馈类型 ---------- */
.page-contact .issue-list {
  margin: 0 0 calc(var(--unit) * 0.7);
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--c-line);
}

.page-contact .issue {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px;
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .issue__code {
  font-family: var(--font-cond);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: rgba(200, 162, 74, 0.75);
}

.page-contact .issue__title {
  margin: 0 0 0.45rem;
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-contact .issue__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--c-body);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .contact-channels {
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--unit) * 1.1);
  }

  .page-contact .prep-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: calc(var(--unit) * 1.15);
  }

  .page-contact .visit-line {
    grid-template-columns: 130px minmax(0, 1fr);
    align-items: baseline;
    gap: 0 20px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.72fr);
    gap: calc(var(--unit) * 1.4);
  }

  .page-contact .contact-hero {
    padding-top: calc(var(--unit) * 1.8);
    padding-bottom: calc(var(--unit) * 1.6);
  }

  .page-contact .contact-direct__item:first-child {
    padding-top: 26px;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-body__grid {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: calc(var(--unit) * 1.6);
    align-items: start;
  }

  .page-contact .contact-rail {
    position: sticky;
    top: 104px;
    padding-top: calc(var(--unit) * 1.2);
  }

  .page-contact .contact-rail__list {
    flex-direction: column;
    gap: 0;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-contact .contact-rail__link {
    padding: 13px 0 13px 16px;
    border-bottom: none;
    border-left: 1px solid var(--c-line);
    white-space: normal;
  }

  .page-contact .contact-rail__link[data-active] {
    border-bottom: none;
    border-left-color: var(--flare);
    color: var(--mist);
  }

  .page-contact .contact-section {
    padding: calc(var(--unit) * 1.5) 0;
  }
}