.page-contact {
  --ct-pad: clamp(36px, 6vw, 76px);
  --ct-gap: clamp(20px, 3vw, 40px);
  --ct-card-pad: clamp(20px, 3vw, 36px);
  position: relative;
  background:
    radial-gradient(125% 68% at 6% 0%, rgba(23, 74, 99, 0.45) 0%, rgba(7, 23, 26, 0) 62%),
    var(--ink);
  color: var(--snow);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-contact .ct-lead {
  position: relative;
  padding: clamp(30px, 5vw, 64px) 0 clamp(26px, 4vw, 46px);
  border-bottom: var(--rule-soft);
}

.page-contact .ct-lead::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: clamp(120px, 24vw, 320px);
  height: 3px;
  background: linear-gradient(90deg, var(--path), var(--warm));
}

.page-contact .ct-crumb {
  margin-bottom: clamp(18px, 2.5vw, 28px);
}

.page-contact .ct-lead__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 5.2vw, 60px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--hi);
  max-width: 17em;
}

.page-contact .ct-lead__lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(237, 244, 245, 0.82);
}

.page-contact .ct-lead__note {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--data);
}

.page-contact .ct-lead__note a {
  color: var(--frost);
  text-decoration: none;
  border-bottom: 1px solid rgba(143, 208, 223, 0.4);
}

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

/* ---------- 联系渠道：左重右轻 ---------- */

.page-contact .ct-channels__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ct-gap);
  padding: clamp(32px, 5vw, 68px) 0;
}

.page-contact .ct-card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(158deg, var(--deep) 0%, #0A2622 52%, var(--water) 100%);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
  isolation: isolate;
}

.page-contact .ct-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--ice), var(--frost) 55%, rgba(143, 208, 223, 0) 100%);
  z-index: 2;
}

.page-contact .ct-card__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .ct-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.2;
  filter: saturate(0.45) contrast(1.08);
}

.page-contact .ct-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(135deg, rgba(143, 208, 223, 0.05) 0 1px, rgba(0, 0, 0, 0) 1px 9px),
    linear-gradient(180deg, rgba(7, 23, 26, 0.5) 0%, rgba(7, 23, 26, 0.9) 68%);
}

.page-contact .ct-card__body {
  position: relative;
  z-index: 1;
  padding: var(--ct-card-pad);
}

.page-contact .ct-card__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--path);
}

.page-contact .ct-card__title {
  margin: 10px 0 clamp(18px, 3vw, 30px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 32px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--hi);
}

.page-contact .ct-channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .ct-channel {
  position: relative;
  padding: clamp(16px, 2.4vw, 22px) 0 clamp(16px, 2.4vw, 22px) clamp(14px, 2vw, 20px);
  border-top: 1px solid rgba(46, 124, 155, 0.32);
}

.page-contact .ct-channel:last-child {
  border-bottom: 1px solid rgba(46, 124, 155, 0.32);
}

.page-contact .ct-channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: clamp(20px, 3vw, 28px);
  width: 6px;
  height: 6px;
  background: var(--path);
  transform: rotate(45deg);
}

.page-contact .ct-channel__label {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--frost);
}

.page-contact .ct-channel__value {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.4vw, 24px);
  font-variant-numeric: tabular-nums;
  line-height: 1.35;
  color: var(--hi);
  overflow-wrap: anywhere;
}

.page-contact .ct-channel__value--addr {
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.page-contact .ct-channel__hint {
  margin: 8px 0 0;
  max-width: 32em;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(237, 244, 245, 0.72);
}

.page-contact .ct-addr-more {
  margin-top: clamp(16px, 2.4vw, 22px);
  border: var(--rule-soft);
  background: rgba(7, 23, 26, 0.42);
}

.page-contact .ct-addr-more summary {
  cursor: pointer;
  padding: 13px 16px;
  font-size: 14px;
  color: var(--frost);
  list-style: none;
}

.page-contact .ct-addr-more summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-addr-more summary::before {
  content: "+ ";
  font-family: var(--font-mono);
  color: var(--path);
}

.page-contact .ct-addr-more[open] summary::before {
  content: "– ";
}

.page-contact .ct-addr-more p {
  margin: 0;
  padding: 0 16px 18px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(237, 244, 245, 0.74);
}

/* ---------- 右侧窄栏 ---------- */

.page-contact .ct-aside {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  align-content: start;
}

.page-contact .ct-aside__block {
  padding: clamp(18px, 2.6vw, 26px);
  background: rgba(15, 51, 46, 0.62);
  border-left: 2px solid var(--path);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-contact .ct-aside__block--alt {
  background: rgba(23, 74, 99, 0.34);
  border-left-color: var(--ice);
}

.page-contact .ct-aside__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.2vw, 22px);
  letter-spacing: -0.01em;
  color: var(--hi);
}

.page-contact .ct-aside__subtitle {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--hi);
}

.page-contact .ct-hours {
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 1px;
}

.page-contact .ct-hours__row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid rgba(46, 124, 155, 0.28);
}

.page-contact .ct-hours dt {
  font-size: 13px;
  color: var(--data);
  letter-spacing: 0.04em;
}

.page-contact .ct-hours dd {
  margin: 0;
  font-size: 14px;
  color: var(--snow);
}

.page-contact .ct-aside__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(237, 244, 245, 0.74);
}

.page-contact .ct-aside__link {
  margin-top: 16px;
}

/* ---------- 内容与数据合作 ---------- */

.page-contact .ct-coop {
  padding: var(--ct-pad) 0;
  background: linear-gradient(118deg, rgba(23, 74, 99, 0.42) 0%, rgba(15, 51, 46, 0.72) 72%, rgba(7, 23, 26, 0.9) 100%);
  border-top: var(--rule-soft);
  border-bottom: var(--rule-soft);
}

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

.page-contact .ct-coop__intro h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 38px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--hi);
  max-width: 20em;
}

.page-contact .ct-coop__lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(237, 244, 245, 0.8);
}

.page-contact .ct-steps {
  counter-reset: ct-step;
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .ct-step {
  position: relative;
  padding: 16px 18px 16px 58px;
  background: rgba(7, 23, 26, 0.44);
  border-left: 1px solid rgba(46, 124, 155, 0.4);
  transition: background 220ms var(--ease);
}

.page-contact .ct-step::before {
  counter-increment: ct-step;
  content: counter(ct-step, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 17px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--path);
}

.page-contact .ct-step:hover {
  background: rgba(23, 74, 99, 0.4);
}

.page-contact .ct-step__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--hi);
}

.page-contact .ct-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(237, 244, 245, 0.72);
}

.page-contact .ct-coop__foot {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--warm);
  font-size: 14px;
  line-height: 1.8;
  color: var(--frost);
}

.page-contact .ct-coop__media {
  margin: 0;
  align-self: start;
}

.page-contact .ct-coop__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-top: 2px solid var(--path);
}

/* ---------- 让沟通更快一步 ---------- */

.page-contact .ct-brief {
  padding: var(--ct-pad) 0;
}

.page-contact .ct-brief h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 38px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--hi);
  max-width: 22em;
}

.page-contact .ct-brief__lede {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(237, 244, 245, 0.78);
}

.page-contact .ct-brief__filter {
  margin: clamp(20px, 3vw, 30px) 0 clamp(20px, 3vw, 28px);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .ct-brief__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-contact .ct-brief__item {
  position: relative;
  padding: 18px 18px 18px 20px;
  background: rgba(15, 51, 46, 0.5);
  border: 1px solid rgba(46, 124, 155, 0.24);
  border-top-color: rgba(143, 208, 223, 0.38);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: background 220ms var(--ease), transform 220ms var(--ease);
}

.page-contact .ct-brief__item:hover {
  background: rgba(23, 74, 99, 0.52);
  transform: translateY(-3px);
}

.page-contact .ct-brief__item strong {
  display: block;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--hi);
  margin-bottom: 7px;
  letter-spacing: 0.01em;
}

.page-contact .ct-brief__item span {
  display: block;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(237, 244, 245, 0.72);
}

.page-contact .ct-brief__list > .is-refreshed {
  animation: ct-fade 260ms var(--ease) both;
}

@keyframes ct-fade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 收束与路径线 ---------- */

.page-contact .ct-close {
  position: relative;
}

.page-contact .ct-close__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: clamp(8px, 1.6vw, 16px) 0 clamp(32px, 5vw, 56px);
}

.page-contact .ct-close__text {
  margin: 0;
  max-width: 42em;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(237, 244, 245, 0.74);
}

.page-contact .ct-close__text a {
  color: var(--frost);
  text-decoration: none;
  border-bottom: 1px solid rgba(143, 208, 223, 0.4);
}

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

.page-contact .ct-trace {
  height: 4px;
  background: linear-gradient(90deg, rgba(46, 124, 155, 0) 0%, var(--path) 16%, var(--warm) 52%, var(--ice) 100%);
  clip-path: polygon(0 0, 100% 42%, 100% 100%, 0 58%);
}

/* ---------- 显现动效 ---------- */

.page-contact [data-reveal] {
  opacity: 0;
  transform: translate3d(-12px, 14px, 0);
  transition: opacity 520ms var(--ease), transform 520ms var(--ease);
}

.page-contact [data-reveal].is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* ---------- 响应式 ---------- */

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

@media (min-width: 900px) {
  .page-contact .ct-channels__grid {
    grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .ct-coop__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    align-items: start;
  }

  .page-contact .ct-coop__media {
    margin-top: 38px;
  }
}

@media (min-width: 1100px) {
  .page-contact .ct-brief__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .page-contact .ct-card__value,
  .page-contact .ct-channel__value {
    font-size: 17px;
  }

  .page-contact .ct-channel {
    padding-left: 14px;
  }

  .page-contact .ct-step {
    padding: 14px 14px 14px 48px;
  }

  .page-contact .ct-step::before {
    left: 14px;
  }

  .page-contact .ct-close__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact [data-reveal] {
    transform: none;
    transition: opacity 240ms linear;
  }

  .page-contact .ct-brief__item {
    transition: background 160ms linear;
  }

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

  .page-contact .ct-brief__list > .is-refreshed {
    animation: none;
  }
}