.page-contact {
  --ct-cut: clamp(14px, 2.2vw, 20px);
  --ct-ink-soft: rgba(28, 31, 36, .68);
  --ct-ink-mute: rgba(28, 31, 36, .54);
  display: block;
}

/* ================= 首屏：分屏联系 ================= */
.page-contact .ct-hero {
  position: relative;
  padding: clamp(18px, 4vw, 40px) 0 clamp(34px, 6vw, 68px);
  background: linear-gradient(180deg, var(--snow) 0%, var(--frost) 100%);
  overflow: hidden;
}

.page-contact .ct-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(28, 31, 36, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(28, 31, 36, .055) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.page-contact .ct-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 42px);
}

.page-contact .ct-hero__lead .breadcrumbs {
  margin: 0 0 clamp(18px, 3vw, 28px);
}

.page-contact .ct-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(30px, 6.2vw, 54px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0 0 clamp(14px, 2vw, 22px);
  max-width: 17ch;
}

.page-contact .ct-hero .lede {
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--ct-ink-soft);
  margin: 0;
  max-width: 52ch;
}

/* 渠道列表 */
.page-contact .ct-channels__title {
  font-family: var(--font-head);
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--ink);
  margin: 0 0 clamp(12px, 1.8vw, 18px);
  padding-left: 14px;
  position: relative;
}

.page-contact .ct-channels__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .28em;
  bottom: .28em;
  width: 4px;
  background: var(--lava);
}

.page-contact .ct-channels__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(10px, 1.4vw, 14px);
}

.page-contact .ct-channel {
  position: relative;
  background: #fff;
  border: 1px solid var(--line-dark);
  border-left: 3px solid var(--ice);
  padding: clamp(14px, 1.8vw, 20px);
  transition:
    border-color .28s var(--ease),
    background-color .28s var(--ease),
    box-shadow .28s var(--ease),
    transform .28s var(--ease);
}

.page-contact .ct-channel:hover,
.page-contact .ct-channel:focus-within {
  border-left-color: var(--lava);
  background: var(--frost);
  transform: translateX(3px);
  box-shadow: var(--shadow-card);
}

.page-contact .ct-channel__label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--ink);
  margin: 0 0 8px;
}

.page-contact .ct-channel__label::before {
  content: "";
  width: 7px;
  height: 7px;
  flex: none;
  background: var(--lava);
  transform: rotate(45deg);
}

.page-contact .ct-channel__value {
  display: block;
  font-size: clamp(15px, 1.8vw, 18px);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--night);
  margin: 0 0 10px;
  word-break: break-word;
}

.page-contact .ct-channel__value--plain {
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.65;
}

.page-contact a.ct-channel__value {
  text-decoration: none;
  color: var(--ice);
  border-bottom: 1px solid transparent;
  transition: color .24s var(--ease), border-color .24s var(--ease);
}

.page-contact a.ct-channel__value:hover,
.page-contact a.ct-channel__value:focus-visible {
  color: var(--lava);
  border-bottom-color: currentColor;
}

.page-contact .ct-channel__note {
  font-size: 14px;
  line-height: 1.66;
  color: var(--ct-ink-mute);
  margin: 0;
}

.page-contact .ct-channel__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}

/* 首屏视觉 */
.page-contact .ct-hero__visual {
  margin: 0;
  align-self: start;
  background: var(--graphite);
  padding: clamp(10px, 1.4vw, 16px);
  clip-path: polygon(
    0 0,
    calc(100% - var(--ct-cut)) 0,
    100% var(--ct-cut),
    100% 100%,
    var(--ct-cut) 100%,
    0 calc(100% - var(--ct-cut))
  );
}

.page-contact .ct-hero__frame {
  display: block;
  overflow: hidden;
}

.page-contact .ct-hero__frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 14 / 9;
}

.page-contact .ct-hero__caption {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: clamp(12px, 1.6vw, 16px) 2px 2px;
}

.page-contact .ct-hero__caption-text {
  font-size: 13px;
  line-height: 1.6;
  color: var(--glacier);
}

.page-contact .ct-pulse {
  display: block;
  width: 100%;
  height: 26px;
  color: var(--pulse);
  opacity: .9;
}

/* ================= 数据对照与升级协助 ================= */
.page-contact .ct-assist {
  padding: clamp(42px, 7vw, 88px) 0;
  background: #fff;
}

.page-contact .ct-assist__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
}

.page-contact .ct-assist__body h2 {
  font-family: var(--font-head);
  font-size: clamp(24px, 3.8vw, 38px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--ink);
  margin: clamp(10px, 1.4vw, 16px) 0 clamp(12px, 1.8vw, 18px);
}

.page-contact .ct-assist__lede {
  font-size: clamp(15px, 1.7vw, 16.5px);
  line-height: 1.78;
  color: var(--ct-ink-soft);
  margin: 0;
  max-width: 58ch;
}

.page-contact .ct-bullets {
  list-style: none;
  margin: clamp(20px, 2.6vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .ct-bullets li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: clamp(13px, 1.8vw, 18px) clamp(12px, 1.6vw, 20px);
  background: #fff;
  transition: background-color .24s var(--ease);
}

.page-contact .ct-bullets li:hover {
  background: var(--snow);
}

.page-contact .ct-bullets__key {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .03em;
  color: var(--ice);
}

.page-contact .ct-bullets__desc {
  font-size: 15px;
  line-height: 1.68;
  color: var(--ct-ink-soft);
  margin: 0;
}

.page-contact .ct-assist__figure {
  margin: 0;
  align-self: center;
}

.page-contact .ct-assist__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 10 / 7;
  border: 1px solid var(--line-soft);
}

.page-contact .ct-assist__caption {
  margin-top: 12px;
  padding-left: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ct-ink-mute);
  border-left: 2px solid var(--pulse);
}

/* ================= 合作与媒体 ================= */
.page-contact .ct-coop {
  padding: clamp(42px, 7vw, 88px) 0;
  background: linear-gradient(158deg, var(--frost) 0%, var(--snow) 100%);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .ct-coop h2 {
  font-family: var(--font-head);
  font-size: clamp(24px, 3.8vw, 38px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--ink);
  margin: clamp(10px, 1.4vw, 16px) 0 0;
  max-width: 20ch;
}

.page-contact .ct-coop__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(12px, 1.8vw, 18px);
  margin-top: clamp(24px, 3.2vw, 36px);
}

.page-contact .ct-coop__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #fff;
  border: 1px solid var(--line-soft);
  border-top: 3px solid var(--night);
  padding: clamp(18px, 2.2vw, 24px);
  transition:
    transform .3s var(--ease),
    box-shadow .3s var(--ease),
    border-top-color .3s var(--ease);
}

.page-contact .ct-coop__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-top-color: var(--lava);
}

.page-contact .ct-coop__index {
  font-size: 12px;
  letter-spacing: .12em;
  font-weight: 700;
  color: var(--ice);
}

.page-contact .ct-coop__card h3 {
  font-family: var(--font-head);
  font-size: clamp(17px, 2vw, 19px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--ink);
  margin: 0;
}

.page-contact .ct-coop__card p {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ct-ink-soft);
  margin: 0;
}

/* ================= 地域信息 ================= */
.page-contact .ct-region {
  position: relative;
  padding: clamp(46px, 7vw, 92px) 0;
  background: var(--graphite);
  color: var(--snow);
  overflow: hidden;
}

.page-contact .ct-region::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(74, 159, 216, .10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(74, 159, 216, .10) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

.page-contact .ct-region__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 46px);
}

.page-contact .ct-region .eyebrow {
  color: var(--pulse);
}

.page-contact .ct-region h2 {
  font-family: var(--font-head);
  font-size: clamp(26px, 4.2vw, 42px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.018em;
  color: var(--snow);
  margin: clamp(10px, 1.4vw, 16px) 0 clamp(14px, 2vw, 20px);
}

.page-contact .ct-region__body p {
  font-size: clamp(15px, 1.7vw, 16.5px);
  line-height: 1.8;
  color: var(--glacier);
  margin: 0 0 clamp(12px, 1.6vw, 16px);
  max-width: 56ch;
}

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

.page-contact .ct-region .data-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(74, 159, 216, .26);
  border: 1px solid rgba(74, 159, 216, .26);
  align-self: start;
}

.page-contact .ct-region .data-strip__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(14px, 2vw, 20px);
  background: var(--night);
}

.page-contact .ct-region .data-strip__num {
  font-family: var(--font-mono);
  font-size: clamp(21px, 3vw, 29px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--pulse);
}

.page-contact .ct-region .data-strip__label {
  font-size: 13px;
  line-height: 1.5;
  letter-spacing: .02em;
  color: var(--glacier);
}

/* ================= 邮件沟通建议 ================= */
.page-contact .ct-mail {
  padding: clamp(42px, 7vw, 88px) 0;
  background: var(--snow);
}

.page-contact .ct-mail__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 54px);
}

.page-contact .ct-mail__intro h2 {
  font-family: var(--font-head);
  font-size: clamp(24px, 3.8vw, 36px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--ink);
  margin: clamp(10px, 1.4vw, 16px) 0 clamp(12px, 1.8vw, 18px);
}

.page-contact .ct-mail__intro p {
  font-size: clamp(15px, 1.7vw, 16.5px);
  line-height: 1.78;
  color: var(--ct-ink-soft);
  margin: 0;
}

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

.page-contact .ct-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  align-items: start;
  padding: clamp(16px, 2.2vw, 22px);
  background: #fff;
  transition: background-color .24s var(--ease);
}

.page-contact .ct-step:hover {
  background: var(--frost);
}

.page-contact .ct-step__num {
  grid-column: 1;
  grid-row: 1;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--lava);
  padding-top: .2em;
}

.page-contact .ct-step h3 {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-head);
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 800;
  letter-spacing: -.005em;
  color: var(--ink);
  margin: 0;
}

.page-contact .ct-step p {
  grid-column: 2;
  grid-row: 2;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ct-ink-soft);
  margin: 0;
}

/* ================= 底部动作区 ================= */
.page-contact .ct-cta {
  padding: clamp(30px, 5vw, 60px) 0 clamp(46px, 8vw, 96px);
  background: linear-gradient(180deg, var(--snow) 0%, var(--frost) 100%);
}

.page-contact .ct-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 30px);
  padding: clamp(24px, 3.4vw, 40px);
  background: var(--night);
  color: var(--snow);
  clip-path: polygon(
    0 26px,
    26px 0,
    100% 0,
    100% calc(100% - 26px),
    calc(100% - 26px) 100%,
    0 100%
  );
}

.page-contact .ct-cta__text h2 {
  font-family: var(--font-head);
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -.015em;
  color: var(--snow);
  margin: 0 0 10px;
}

.page-contact .ct-cta__text p {
  font-size: clamp(14.5px, 1.6vw, 16px);
  line-height: 1.75;
  color: var(--glacier);
  margin: 0;
  max-width: 56ch;
}

.page-contact .ct-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-self: center;
}

/* ================= 响应式 ================= */
@media (min-width: 640px) {
  .page-contact .ct-channels__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .ct-bullets li {
    grid-template-columns: minmax(120px, 160px) minmax(0, 1fr);
    gap: clamp(12px, 2vw, 22px);
    align-items: baseline;
  }
}

@media (min-width: 700px) {
  .page-contact .ct-coop__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    grid-template-areas:
      "lead visual"
      "channels visual";
    align-items: start;
  }

  .page-contact .ct-hero__lead { grid-area: lead; }
  .page-contact .ct-channels { grid-area: channels; }
  .page-contact .ct-hero__visual { grid-area: visual; }

  .page-contact .ct-assist__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
  }

  .page-contact .ct-region__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
    gap: clamp(32px, 6vw, 76px);
  }

  .page-contact .ct-mail__grid {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    align-items: start;
  }

  .page-contact .ct-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: clamp(24px, 4vw, 60px);
  }
}

@media (min-width: 1040px) {
  .page-contact .ct-coop__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-channel,
  .page-contact .ct-coop__card,
  .page-contact a.ct-channel__value {
    transition: none;
  }

  .page-contact .ct-channel:hover,
  .page-contact .ct-channel:focus-within {
    transform: none;
  }

  .page-contact .ct-coop__card:hover {
    transform: none;
  }
}