.page-contact {
  background: var(--ink-0);
  color: var(--mist);
  padding-bottom: 72px;
  overflow-x: hidden;
}

.page-contact .crumbs {
  padding: calc(var(--bar-h) + 16px) 0 16px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--dusk);
}

.page-contact .crumbs a {
  color: var(--dusk);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.page-contact .crumbs__sep {
  margin: 0 8px;
  color: var(--line-strong);
}

.page-contact .crumbs [aria-current="page"] {
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.ct-hero {
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.ct-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.ct-hero__plate {
  position: relative;
  padding: 26px 20px 24px;
  background:
    radial-gradient(130% 150% at 0% 0%, var(--cy-dim), transparent 56%),
    var(--ink-1);
}

.ct-hero__kicker {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--silver);
}

.ct-hero__dot {
  width: 7px;
  height: 7px;
  background: var(--cy);
  transform: rotate(45deg);
  flex: 0 0 auto;
}

.page-contact h1 {
  margin: 0 0 14px;
  font-family: var(--font-label);
  font-weight: 700;
  font-size: clamp(30px, 7vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.ct-hero__lede {
  margin: 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--dusk);
}

.ct-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px dashed var(--line-strong);
}

.ct-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.ct-fact__num {
  font-family: var(--font-data);
  font-size: clamp(26px, 6vw, 38px);
  line-height: 1;
  color: var(--cy);
  letter-spacing: -0.03em;
}

.ct-fact__key {
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--dusk);
}

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

/* ---------- 章节索引 ---------- */
.ct-index {
  position: sticky;
  top: var(--bar-h);
  z-index: 6;
  background: rgba(10, 15, 13, 0.94);
  border-bottom: 1px solid var(--line);
}

.ct-index__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.ct-index__inner::-webkit-scrollbar {
  display: none;
}

.ct-index__title {
  flex: 0 0 auto;
  padding-right: 12px;
  border-right: 1px solid var(--line-strong);
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--silver);
}

.ct-index__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ct-index__link {
  display: block;
  padding: 5px 10px;
  white-space: nowrap;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--dusk);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.ct-index__link:hover,
.ct-index__link:focus-visible {
  color: var(--mist);
  border-color: var(--line-strong);
}

.ct-index__link[aria-current="location"] {
  color: var(--cy);
  border-color: var(--cy);
  transform: translateY(-2px);
}

/* ---------- 通用章节 ---------- */
.ct-sec {
  padding-top: 64px;
  scroll-margin-top: calc(var(--bar-h) + 74px);
}

.page-contact .chapter-head {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num title"
    "num note";
  gap: 4px 14px;
  align-items: start;
  margin-bottom: 28px;
}

.page-contact .chapter-head .chapter-num {
  grid-area: num;
}

.page-contact .chapter-head h2 {
  grid-area: title;
  margin: 0;
  font-family: var(--font-chapter);
  font-weight: 600;
  font-size: clamp(21px, 4.4vw, 30px);
  line-height: 1.3;
  color: var(--mist);
}

.ct-sec__note {
  grid-area: note;
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dusk);
}

/* ---------- 渠道卡片 ---------- */
.ct-ch {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.ct-ch__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.ct-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 20px 18px 18px;
  background: var(--ink-1);
  box-shadow: inset 0 0 0 1px var(--line);
  clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
  transition: box-shadow 0.24s var(--ease), transform 0.24s var(--ease);
}

.ct-card:hover,
.ct-card:focus-within {
  box-shadow: inset 0 0 0 1px var(--cy);
  transform: translateY(-3px);
}

.ct-card__tag {
  align-self: flex-start;
  padding: 3px 8px;
  font-family: var(--font-label);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--ink-0);
  background: var(--cy);
}

.ct-card__tag--ghost {
  color: var(--cy);
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--cy);
}

.ct-card__tag--silver {
  color: var(--silver);
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

.ct-card h3 {
  margin: 2px 0 0;
  font-family: var(--font-label);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.ct-card__value {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.ct-card__value--mono {
  font-family: var(--font-data);
  font-size: clamp(16px, 3.6vw, 21px);
  letter-spacing: -0.01em;
  color: var(--cy);
}

.ct-card__use {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
  opacity: 0.86;
}

.ct-card__meta {
  margin: auto 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--dusk);
}

.ct-card--addr {
  background-image:
    repeating-linear-gradient(0deg, rgba(200, 208, 204, 0.07) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, rgba(200, 208, 204, 0.07) 0 1px, transparent 1px 24px);
  background-position: 0 0, 0 0;
}

.ct-ch__aside {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ct-ch__aside img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ct-ch__caption {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--or);
  font-size: 13px;
  line-height: 1.7;
  color: var(--dusk);
}

/* ---------- 邮件写法 ---------- */
.ct-mail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.ct-mail__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  counter-reset: none;
}

.ct-mail__item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  padding: 14px 14px 14px 0;
  border-bottom: 1px solid var(--line);
}

.ct-mail__n {
  font-family: var(--font-data);
  font-size: 15px;
  line-height: 1.9;
  color: var(--silver);
  text-align: center;
  border-right: 1px solid var(--line-strong);
}

.ct-mail__item h3 {
  margin: 0 0 4px;
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--cy);
}

.ct-mail__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--dusk);
}

.ct-quote {
  padding: 22px 20px;
}

.ct-quote p {
  margin: 0;
  font-family: var(--font-chapter);
  font-size: 15px;
  line-height: 1.85;
  color: #2A2A22;
}

.ct-quote__sign {
  margin-top: 14px !important;
  padding-top: 12px;
  border-top: 1px solid rgba(42, 42, 34, 0.24);
  font-family: var(--font-label) !important;
  font-size: 11px !important;
  letter-spacing: 0.16em;
  color: #5A5646 !important;
}

/* ---------- 处理节奏 ---------- */
.ct-pace {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-strong);
}

.ct-pace__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.ct-pace__tick {
  flex: 0 0 8px;
  width: 8px;
  height: 8px;
  background: var(--cy);
  transform: rotate(45deg) translateY(-1px);
}

.ct-pace__key {
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.ct-pace__val {
  margin-left: auto;
  font-family: var(--font-data);
  font-size: clamp(18px, 4.4vw, 23px);
  letter-spacing: -0.02em;
  color: var(--cy);
}

.ct-pace__desc {
  flex: 1 0 100%;
  padding-left: 22px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--dusk);
}

/* ---------- 备案信息 ---------- */
.ct-filing {
  padding: 22px 18px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(200, 208, 204, 0.06), transparent 70%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.ct-filing__label {
  margin: 0 0 18px;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--silver);
}

.ct-filing__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.ct-filing__item {
  padding-left: 12px;
  border-left: 1px solid var(--line-strong);
}

.ct-filing__key {
  margin: 0 0 4px;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--dusk);
}

.ct-filing__val {
  margin: 0;
  font-family: var(--font-data);
  font-size: 16px;
  line-height: 1.5;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.ct-filing__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
  font-size: 13px;
  line-height: 1.75;
  color: var(--dusk);
}

/* ---------- 合作与媒体 ---------- */
.ct-partner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.ct-partner__col {
  padding: 18px;
  background: var(--ink-1);
  clip-path: polygon(12px 0, 100% 0, 100% 100%, 0 100%, 0 12px);
}

.ct-partner__col h3 {
  margin: 0 0 10px;
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--or);
}

.ct-partner__col p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  opacity: 0.88;
}

.ct-partner__col p:last-child {
  margin-bottom: 0;
}

.ct-partner__col a,
.ct-end a {
  color: var(--cy);
  text-decoration: none;
  border-bottom: 1px solid rgba(37, 242, 198, 0.42);
}

.ct-partner__col a:hover,
.ct-end a:hover,
.ct-partner__col a:focus-visible,
.ct-end a:focus-visible {
  border-bottom-color: var(--cy);
}

.ct-end {
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.8;
  color: var(--dusk);
}

/* ---------- 返回顶部 ---------- */
.page-contact .to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 40px 0 0;
  padding: 9px 14px;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--silver);
  background: transparent;
  border: 1px solid var(--line-strong);
  cursor: pointer;
  clip-path: polygon(10px 0, 100% 0, 100% 100%, 0 100%, 0 10px);
}

.page-contact .to-top:hover,
.page-contact .to-top:focus-visible {
  color: var(--cy);
  border-color: var(--cy);
}

.page-contact .to-top__tick {
  width: 8px;
  height: 8px;
  background: var(--cy);
  transform: rotate(45deg);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .ct-mail__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 22px;
  }

  .ct-filing__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ct-partner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-contact {
    padding-bottom: 96px;
  }

  .ct-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    gap: 28px;
  }

  .ct-hero__plate {
    padding: 34px 30px 30px;
  }

  .ct-ch {
    grid-template-columns: 8fr 4fr;
    gap: 28px;
    align-items: start;
  }

  .ct-ch__cards {
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

  .ct-card--addr {
    grid-column: 1 / -1;
  }

  .ct-mail {
    grid-template-columns: 8fr 4fr;
    gap: 28px;
    align-items: start;
  }

  .ct-filing__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .ct-sec {
    padding-top: 88px;
  }

  .page-contact .to-top {
    margin-top: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ct-card,
  .ct-index__link {
    transition: none;
  }

  .ct-card:hover,
  .ct-card:focus-within {
    transform: none;
  }

  .ct-index__link[aria-current="location"] {
    transform: none;
  }
}