.page-contact {
  display: block;
  overflow-x: clip;
  background: var(--ink-900);
  color: var(--text);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding: 18px 0 44px;
  overflow: hidden;
}

.page-contact .contact-hero__media {
  position: absolute;
  inset: 0;
  margin: 0;
  z-index: 0;
}

.page-contact .contact-hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: 0.34;
  filter: saturate(0.75) brightness(0.62);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(4, 18, 15, 0.5) 0%, rgba(4, 18, 15, 0.9) 58%, var(--ink-900) 100%),
    repeating-linear-gradient(90deg, rgba(53, 240, 200, 0.05) 0 1px, transparent 1px 68px);
  z-index: 0;
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: 14px;
}

.page-contact .contact-hero__body {
  max-width: 48rem;
  margin-top: 18px;
}

.page-contact .contact-hero h1 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 7.4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.012em;
  color: var(--text);
}

.page-contact .contact-hero .lead {
  margin: 0;
  max-width: 42rem;
  font-size: 1.02rem;
  line-height: 1.78;
  color: var(--text);
  opacity: 0.9;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 常见问题分类 ---------- */

.page-contact .contact-topics {
  padding: 6px 0 46px;
}

.page-contact .contact-topics__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .contact-topic {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  min-width: 0;
  padding: 22px 18px 18px;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-lg);
  transition: border-color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out);
}

.page-contact .contact-topic::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 12px;
  width: 34px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--neon);
  opacity: 0.85;
}

.page-contact .contact-topic:hover {
  border-color: var(--line-strong);
  background: var(--ink-700);
}

.page-contact .contact-topic__kind {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--neon);
}

.page-contact .contact-topic__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 700;
  line-height: 1.34;
  color: var(--text);
}

.page-contact .contact-topic p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .contact-topic__link {
  margin-top: auto;
  padding-top: 10px;
  font-size: 0.86rem;
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  align-self: flex-start;
  transition: border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.page-contact .contact-topic__link:hover {
  color: var(--neon-soft);
  border-bottom-color: var(--neon-soft);
}

/* ---------- 联系渠道 ---------- */

.page-contact .contact-channels {
  padding: 0 0 46px;
}

.page-contact .contact-channels__grid {
  display: grid;
  gap: 22px;
  padding: 26px 18px;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-xl);
}

.page-contact .contact-channels__lead h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.6vw, 2.1rem);
  font-weight: 800;
  line-height: 1.14;
  color: var(--text);
}

.page-contact .contact-channels__lead p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.76;
  color: var(--muted);
}

.page-contact .contact-channels__cards {
  display: grid;
  gap: 12px;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
  padding: 16px 15px 17px;
  background: rgba(53, 240, 200, 0.05);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  transition: border-color var(--dur-base) var(--ease-out);
}

.page-contact .channel-card:hover {
  border-color: var(--line-strong);
}

.page-contact .channel-card--wide {
  grid-column: 1 / -1;
}

.page-contact .channel-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__note {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.68;
  color: var(--muted);
}

/* ---------- 提交清单 ---------- */

.page-contact .contact-brief {
  padding: 0 0 46px;
}

.page-contact .contact-brief__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .contact-brief__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 13px;
  align-items: start;
  padding: 15px 16px;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
}

.page-contact .contact-brief__tick {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--neon);
  border-radius: 7px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1;
  color: var(--neon);
}

.page-contact .contact-brief__label {
  margin: 0 0 5px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text);
}

.page-contact .contact-brief__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 工单流程 ---------- */

.page-contact .contact-flow-section {
  padding: 0 0 46px;
}

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

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

.page-contact .contact-flow__step {
  position: relative;
  padding: 0 0 22px 44px;
}

.page-contact .contact-flow__step::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 30px;
  bottom: 2px;
  width: 1px;
  background: linear-gradient(180deg, var(--line-strong), rgba(53, 240, 200, 0));
}

.page-contact .contact-flow__step:last-child {
  padding-bottom: 0;
}

.page-contact .contact-flow__step:last-child::before {
  display: none;
}

.page-contact .contact-flow__index {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--orange);
}

.page-contact .contact-flow .disclosure__trigger {
  display: block;
  width: 100%;
  padding: 2px 0 6px;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.36;
  color: var(--text);
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease-out);
}

.page-contact .contact-flow .disclosure__trigger:hover,
.page-contact .contact-flow .disclosure__trigger:focus-visible {
  color: var(--neon);
}

.page-contact .contact-flow .disclosure__panel {
  padding-top: 4px;
  font-size: 0.91rem;
  line-height: 1.76;
  color: var(--muted);
}

.page-contact .contact-flow .disclosure__panel p {
  margin: 0;
}

.page-contact .disclosure__panel[hidden] {
  display: none;
}

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

/* ---------- 合作与投稿 ---------- */

.page-contact .contact-coop {
  padding: 0 0 42px;
}

.page-contact .contact-coop__panel {
  display: grid;
  gap: 22px;
  padding: 26px 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(120% 90% at 0% 0%, rgba(53, 240, 200, 0.12), rgba(53, 240, 200, 0) 62%),
    var(--ink-800);
}

.page-contact .contact-coop__intro h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.6vw, 2.05rem);
  font-weight: 800;
  line-height: 1.16;
  color: var(--text);
}

.page-contact .contact-coop__intro p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--text);
  opacity: 0.88;
}

.page-contact .contact-coop__aside {
  padding: 18px 16px 20px;
  border-radius: var(--radius-lg);
  background: rgba(4, 18, 15, 0.55);
  border: 1px solid var(--ink-700);
}

.page-contact .contact-coop__aside-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--neon);
}

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

.page-contact .contact-coop__list li {
  position: relative;
  padding-left: 16px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text);
  opacity: 0.92;
}

.page-contact .contact-coop__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 1px;
  background: var(--orange);
}

.page-contact .contact-coop__mail {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--ink-700);
  font-size: 0.87rem;
  line-height: 1.72;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.page-contact .contact-coop__mail .num {
  font-family: var(--font-mono);
  color: var(--orange-soft);
}

/* ---------- 个人信息提示条 ---------- */

.page-contact .contact-note {
  padding: 0 0 56px;
}

.page-contact .contact-note__inner {
  padding: 22px 18px;
  border-radius: var(--radius-lg);
  background: var(--orange-soft);
  color: var(--on-paper);
}

.page-contact .contact-note__inner h2 {
  margin: 0 0 9px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--on-paper);
}

.page-contact .contact-note__inner p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.76;
  color: var(--on-paper);
}

.page-contact .contact-note__inner a {
  color: #8a3c07;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .contact-note__inner a:hover {
  color: #0e1c18;
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-contact .contact-topics__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-channels__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-brief__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-flow__layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    gap: 26px;
  }

  .page-contact .contact-coop__panel {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: 28px;
    padding: 32px 28px;
  }

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

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

  .page-contact .contact-note__inner p {
    font-size: 0.96rem;
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-hero {
    padding: 34px 0 60px;
  }

  .page-contact .contact-hero__body {
    max-width: 44rem;
  }

  .page-contact .contact-topics__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .contact-channels__grid {
    grid-template-columns: 4fr 7fr;
    gap: 34px;
    padding: 36px 34px;
  }

  .page-contact .contact-flow__layout {
    grid-template-columns: 6fr 5fr;
    gap: 36px;
  }

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

  .page-contact .contact-coop__panel {
    padding: 38px 36px;
  }

  .page-contact .contact-topics,
  .page-contact .contact-brief,
  .page-contact .contact-flow-section,
  .page-contact .contact-coop {
    padding-bottom: 58px;
  }

  .page-contact .contact-channels {
    padding-bottom: 58px;
  }
}