.page-contact {
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(16px, 3vw, 28px) 0 clamp(32px, 6vw, 64px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(37, 217, 232, 0.16), transparent 60%),
    radial-gradient(90% 80% at 0% 100%, rgba(23, 201, 100, 0.13), transparent 62%),
    var(--ink);
}

.page-contact .ct-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  filter: grayscale(0.3) contrast(1.1);
}

.page-contact .ct-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumbs {
  margin-bottom: clamp(18px, 4vw, 34px);
}

.page-contact .eyebrow {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  margin: 0 0 10px;
}

.page-contact .ct-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-contact .ct-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7.4vw, 60px);
  line-height: 1.08;
  letter-spacing: 0.01em;
  margin: 0 0 0.42em;
}

.page-contact .ct-hero h1 span {
  display: block;
  color: var(--signal);
}

.page-contact .ct-hero__text {
  margin: 0;
  max-width: 34em;
  color: var(--mute);
  font-size: clamp(15px, 2.4vw, 17px);
  line-height: 1.75;
}

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

.page-contact .ct-hero__note {
  margin: 14px 0 0;
  color: var(--mute);
  font-size: 12.5px;
  line-height: 1.6;
}

.page-contact .ct-hero__panel {
  background: linear-gradient(160deg, var(--card-hi), var(--card) 55%, var(--deep));
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(20px, 4vw, 30px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.page-contact .ct-panel__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mute);
  margin: 0 0 8px;
}

.page-contact .ct-panel__mail {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(16px, 4.4vw, 23px);
  line-height: 1.35;
  color: var(--signal);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.page-contact .ct-panel__mail:hover,
.page-contact .ct-panel__mail:focus-visible {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-contact .ct-panel__rule {
  height: 2px;
  margin: 18px 0;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--signal) 45%, transparent);
}

.page-contact .ct-panel__tel {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(22px, 5.6vw, 33px);
  letter-spacing: 0.02em;
  color: var(--white);
  text-decoration: none;
}

.page-contact .ct-panel__tel:hover,
.page-contact .ct-panel__tel:focus-visible {
  color: var(--amber);
}

.page-contact .ct-panel__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-panel__tags .tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 5px 11px;
  border-radius: var(--r-pill);
}

/* ---------- 正文 ---------- */
.page-contact .ct-body {
  padding: clamp(30px, 5vw, 60px) 0 clamp(46px, 8vw, 90px);
  background: linear-gradient(180deg, var(--ink), var(--deep));
}

.page-contact .ct-body__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

.page-contact .ct-index__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mute);
  margin: 0 0 10px;
}

.page-contact .ct-index .chapter-nav__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-contact .ct-index .chapter-nav__link {
  display: inline-block;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  color: var(--mute);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-contact .ct-index .chapter-nav__link:hover,
.page-contact .ct-index .chapter-nav__link:focus-visible {
  color: var(--white);
  border-color: var(--cyan);
}

.page-contact .ct-index .chapter-nav__link[aria-current="true"] {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--deep);
}

.page-contact .ct-chapter {
  padding: 0 0 clamp(26px, 4vw, 40px);
  margin: 0 0 clamp(26px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-chapter:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-contact .ct-chapter h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 4.2vw, 33px);
  line-height: 1.22;
  letter-spacing: 0.01em;
  margin: 0 0 0.55em;
}

.page-contact .ct-chapter h2 .num {
  font-family: var(--font-mono);
  font-size: 0.48em;
  letter-spacing: 0.06em;
  color: var(--cyan);
  margin-right: 0.7em;
  vertical-align: 0.2em;
}

.page-contact .ct-chapter h3 {
  font-size: clamp(15px, 2.4vw, 17px);
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--white);
}

.page-contact .ct-chapter p {
  margin: 0 0 12px;
  max-width: 62ch;
  color: var(--mute);
  font-size: clamp(14px, 2.2vw, 16px);
  line-height: 1.75;
}

.page-contact .ct-chapter p a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed rgba(37, 217, 232, 0.5);
}

.page-contact .ct-chapter p a:hover,
.page-contact .ct-chapter p a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 通道列表 ---------- */
.page-contact .ct-channel {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 4px 10px;
  padding: 16px 0;
  border-top: 1px dashed var(--line);
}

.page-contact .ct-channel:first-of-type {
  border-top: 0;
  padding-top: 4px;
}

.page-contact .ct-channel__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  padding-top: 5px;
}

.page-contact .ct-channel__value {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(15px, 2.8vw, 20px);
  color: var(--signal);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.page-contact .ct-channel__value:hover,
.page-contact .ct-channel__value:focus-visible {
  color: var(--amber);
}

.page-contact .ct-channel__value--plain {
  color: var(--white);
  font-size: clamp(14px, 2.4vw, 16.5px);
  line-height: 1.6;
}

.page-contact .ct-channel p {
  margin: 0;
  font-size: clamp(13.5px, 2.1vw, 15px);
}

/* ---------- 图片 ---------- */
.page-contact .ct-figure {
  position: relative;
  margin: 8px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--card);
}

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

.page-contact .ct-figure__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--deep);
  background: var(--amber);
  padding: 4px 10px;
  border-radius: var(--r-pill);
}

.page-contact .ct-figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 26px 16px 13px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--white);
  background: linear-gradient(180deg, transparent, rgba(4, 18, 15, 0.92));
}

/* ---------- 邮件模板 ---------- */
.page-contact .ct-template {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(16px, 3.4vw, 24px);
  margin: 4px 0 18px;
}

.page-contact .ct-template .ct-template__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--amber);
  max-width: none;
  margin: 0 0 8px;
  line-height: 1.5;
}

.page-contact .ct-code {
  margin: 0 0 16px;
  padding: 14px 16px;
  background: var(--deep);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  font-family: var(--font-mono);
  font-size: clamp(12px, 2.2vw, 13px);
  line-height: 1.9;
  color: var(--white);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.page-contact .ct-code:last-child {
  margin-bottom: 0;
}

.page-contact .ct-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.page-contact .ct-tags li {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 6px 12px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(37, 217, 232, 0.35);
  background: rgba(37, 217, 232, 0.07);
  color: var(--cyan);
}

/* ---------- 合作 ---------- */
.page-contact .ct-partner {
  display: grid;
  gap: 12px;
  margin: 6px 0 18px;
}

.page-contact .ct-partner__item {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--signal);
  border-radius: var(--r-md);
  padding: 16px 18px;
}

.page-contact .ct-partner__item:nth-child(2) {
  border-left-color: var(--cyan);
}

.page-contact .ct-partner__item:nth-child(3) {
  border-left-color: var(--amber);
}

.page-contact .ct-partner__item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
}

/* ---------- 回复时间 ---------- */
.page-contact .ct-response {
  display: grid;
  gap: 12px;
  margin: 6px 0 18px;
}

.page-contact .ct-response__cell {
  background: linear-gradient(150deg, var(--card-hi), var(--card));
  border-radius: var(--r-md);
  padding: 16px 18px;
}

.page-contact .ct-response__big {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(17px, 3.4vw, 22px);
  color: var(--amber);
}

.page-contact .ct-response__cell p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
}

/* ---------- 地址与备案 ---------- */
.page-contact .ct-legal {
  display: grid;
  gap: 1px;
  margin: 6px 0 18px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-contact .ct-legal__cell {
  background: var(--card);
  padding: 16px 18px;
}

.page-contact .ct-legal__k {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
}

.page-contact .ct-legal__v {
  margin: 0;
  max-width: none;
  color: var(--white);
  font-size: 14.5px;
  line-height: 1.7;
}

.page-contact .ct-legal__v .mono {
  font-family: var(--font-mono);
  color: var(--cyan);
  letter-spacing: 0.02em;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .ct-partner,
  .page-contact .ct-response {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .ct-legal {
    grid-template-columns: 1.6fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: end;
  }

  .page-contact .ct-channel {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 4px 14px;
  }
}

@media (min-width: 960px) {
  .page-contact .ct-body__grid {
    grid-template-columns: 232px minmax(0, 1fr);
    align-items: start;
    gap: clamp(26px, 4vw, 56px);
  }

  .page-contact .ct-index {
    position: sticky;
    top: calc(var(--head-h) + 18px);
  }

  .page-contact .ct-index .chapter-nav__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-contact .ct-index .chapter-nav__link {
    display: block;
    white-space: normal;
  }
}