.page-contact {
  --ct-gap: clamp(1.5rem, 4vw, 2.75rem);
  --ct-border: 3px solid var(--line);
  --ct-accent-bar: 8px;
}

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

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(2.2rem, 6vw, 4.4rem) clamp(2.4rem, 6vw, 4.2rem);
  border-bottom: var(--ct-border);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(43, 245, 196, 0.055) 0 1px,
    transparent 1px 92px
  );
  pointer-events: none;
}

.page-contact .contact-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.6rem);
  margin-top: clamp(1.4rem, 4vw, 2.2rem);
}

.page-contact .contact-hero__kicker {
  display: inline-block;
  margin: 0 0 0.9rem;
  padding-left: 0.8rem;
  border-left: 4px solid var(--amber);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-contact .contact-hero__title {
  margin: 0 0 1rem;
  font-size: var(--fs-h1);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 22ch;
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: 54ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .contact-hero__coords {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  border: var(--ct-border);
  background: var(--carbon);
  box-shadow: var(--shadow-hard);
}

.page-contact .contact-hero__coords li {
  flex: 1 1 50%;
  min-width: 0;
  border-bottom: 2px solid var(--line);
}

.page-contact .contact-hero__coords li:nth-child(odd) {
  border-right: 2px solid var(--line);
}

.page-contact .contact-hero__coords li:last-child {
  border-bottom: 0;
}

.page-contact .contact-hero__coords a {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.7rem 0.85rem;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--paper);
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-contact .contact-hero__coords a:hover,
.page-contact .contact-hero__coords a:focus-visible {
  background: rgba(43, 245, 196, 0.12);
  color: var(--neon);
}

.page-contact .contact-hero__idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--amber);
}

.page-contact .contact-hero__nav {
  align-self: end;
}

.page-contact .contact-hero__anchors {
  margin-top: clamp(1.8rem, 5vw, 2.8rem);
  display: grid;
  border: var(--ct-border);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
}

.page-contact .contact-cred {
  display: grid;
  gap: 0.55rem;
  align-content: start;
  padding: clamp(1rem, 3vw, 1.6rem);
}

.page-contact .contact-cred + .contact-cred {
  border-top: var(--ct-border);
}

.page-contact .contact-cred__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-cred__value {
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 3.4vw, 1.7rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
}

.page-contact .contact-cred--mail .contact-cred__value {
  color: var(--neon);
}

.page-contact .contact-cred--tel .contact-cred__value {
  color: var(--amber);
}

.page-contact .contact-cred__note {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .contact-cred__copy {
  justify-self: start;
  margin-top: 0.2rem;
}

.page-contact .contact-hero__status {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin: clamp(1.2rem, 3vw, 1.8rem) 0 0;
  padding: 0.75rem 1rem;
  border: 3px solid var(--neon);
  background: rgba(43, 245, 196, 0.08);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .contact-hero__status::before {
  content: "";
  flex: none;
  width: 10px;
  height: 10px;
  background: var(--neon);
  box-shadow: 0 0 0 4px rgba(43, 245, 196, 0.2);
  animation: ct-blink 2.4s steps(1, end) infinite;
}

@keyframes ct-blink {
  0%, 62% { opacity: 1; }
  63%, 100% { opacity: 0.35; }
}

/* ---------- 主体骨架 ---------- */

.page-contact .contact-body {
  padding-block: clamp(2.4rem, 6vw, 4.6rem);
}

.page-contact .contact-body .grid--rail {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.6rem);
}

.page-contact .contact-index {
  align-self: start;
  border: var(--ct-border);
  background: var(--carbon);
  padding: 1rem 0.9rem;
}

.page-contact .contact-index__title {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lime);
}

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

.page-contact .contact-index__link {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.52rem 0.35rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-contact .contact-index__list li:last-child .contact-index__link {
  border-bottom: 0;
}

.page-contact .contact-index__link:hover,
.page-contact .contact-index__link:focus-visible {
  color: var(--paper);
  background: rgba(43, 245, 196, 0.08);
  padding-left: 0.7rem;
}

.page-contact .contact-index__idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--amber);
}

.page-contact .contact-sec {
  scroll-margin-top: calc(var(--header-offset) + 1.2rem);
}

.page-contact .contact-sec + .contact-sec {
  margin-top: clamp(2.6rem, 7vw, 4.8rem);
}

.page-contact .contact-sec .section-head {
  margin-bottom: clamp(1.2rem, 3vw, 1.9rem);
}

/* ---------- 01 客服通道 ---------- */

.page-contact .contact-channels {
  display: grid;
  border: var(--ct-border);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
}

.page-contact .contact-channel {
  display: grid;
  gap: 0.6rem;
  align-content: start;
  padding: clamp(1.1rem, 3vw, 1.7rem);
}

.page-contact .contact-channel + .contact-channel {
  border-top: var(--ct-border);
}

.page-contact .contact-channel__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-channel__value {
  font-family: var(--font-mono);
  font-size: clamp(1.12rem, 3.2vw, 1.55rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.page-contact .contact-channel--mail .contact-channel__value {
  color: var(--neon);
}

.page-contact .contact-channel--tel .contact-channel__value {
  color: var(--amber);
}

.page-contact .contact-channel__note {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-frame {
  margin: clamp(1.3rem, 3vw, 1.9rem) 0 0;
}

.page-contact .contact-frame .media-frame__media {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: var(--ct-border);
}

/* ---------- 02 反馈准备 ---------- */

.page-contact .contact-prep__bar,
.page-contact .contact-biz__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: clamp(1rem, 2.5vw, 1.5rem);
}

.page-contact .contact-prep__count {
  align-self: center;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-contact .contact-prep__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-contact .contact-prep__item {
  display: grid;
  gap: 0.5rem;
  padding: clamp(1rem, 3vw, 1.4rem);
  border: var(--ct-border);
  border-left-width: var(--ct-accent-bar);
  border-left-color: var(--neon);
  background: var(--carbon);
}

.page-contact .contact-prep__no {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.page-contact .contact-prep__title {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-contact .contact-prep__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-prep__needs {
  list-style: none;
  margin: 0.3rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.42rem;
}

.page-contact .contact-prep__needs li {
  position: relative;
  padding-left: 1.35rem;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .contact-prep__needs li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.63em;
  width: 8px;
  height: 8px;
  background: var(--amber);
}

.page-contact .contact-prep__privacy {
  margin: clamp(1.1rem, 3vw, 1.5rem) 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-prep__privacy a,
.page-contact .contact-filing__foot a,
.page-contact .contact-track__foot a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 600;
}

.page-contact .contact-prep__privacy a:hover,
.page-contact .contact-filing__foot a:hover,
.page-contact .contact-track__foot a:hover {
  color: var(--amber);
}

/* ---------- 03 商务与合作 ---------- */

.page-contact .contact-biz__grid {
  display: grid;
  gap: 1rem;
}

.page-contact .contact-biz__card {
  display: grid;
  gap: 0.5rem;
  align-content: start;
  padding: clamp(1rem, 2.8vw, 1.45rem);
  border: var(--ct-border);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .contact-biz__card:hover {
  transform: translate(-2px, -2px);
  border-color: var(--neon);
}

.page-contact .contact-biz__tag {
  justify-self: start;
  padding: 0.2rem 0.55rem;
  border: 2px solid var(--lime);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.page-contact .contact-biz__title {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .contact-biz__text {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 04 联系地址 ---------- */

.page-contact .contact-address {
  display: grid;
  gap: 1.2rem;
}

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

.page-contact .contact-address__frame .media-frame__media {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: var(--ct-border);
}

.page-contact .contact-address__card {
  display: grid;
  gap: 0.6rem;
  align-content: center;
  padding: clamp(1.1rem, 3vw, 1.7rem);
  border: var(--ct-border);
  border-left-width: var(--ct-accent-bar);
  border-left-color: var(--amber);
  background: var(--carbon);
}

.page-contact .contact-address__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-address__value {
  margin: 0;
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  font-weight: 700;
  line-height: 1.65;
  color: var(--paper);
}

.page-contact .contact-address__note {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 05 站点主体与备案 ---------- */

.page-contact .contact-filing {
  display: grid;
  gap: 1.2rem;
  padding: clamp(1.1rem, 3vw, 1.6rem);
  border: var(--ct-border);
  background: var(--carbon);
}

.page-contact .contact-filing__svg {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
}

.page-contact .contact-filing__dl {
  margin: 0;
  display: grid;
  gap: 0.85rem 1.5rem;
}

.page-contact .contact-filing__row dt {
  margin: 0 0 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-filing__row dd {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .contact-filing__foot {
  margin: clamp(1rem, 2.5vw, 1.4rem) 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 06 响应与跟进 ---------- */

.page-contact .contact-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-contact .contact-track__step {
  display: grid;
  gap: 0.45rem;
  align-content: start;
  padding: clamp(1rem, 3vw, 1.5rem);
  border-top: var(--ct-border);
  background: var(--panel);
}

.page-contact .contact-track__no {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}

.page-contact .contact-track__title {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .contact-track__text {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-track__foot {
  margin: clamp(1.1rem, 3vw, 1.6rem) 0 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 空态 ---------- */

.page-contact .filter-empty {
  margin: 1rem 0 0;
  padding: 0.9rem 1rem;
  border: 2px dashed var(--line);
  font-size: 0.9rem;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-contact .contact-filing__dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

@media (min-width: 760px) {
  .page-contact .contact-hero__anchors {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  }

  .page-contact .contact-cred + .contact-cred {
    border-top: 0;
    border-left: var(--ct-border);
  }

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

  .page-contact .contact-channel + .contact-channel {
    border-top: 0;
    border-left: var(--ct-border);
  }

  .page-contact .contact-address {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: stretch;
  }

  .page-contact .contact-filing {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr);
    align-items: center;
  }

  .page-contact .contact-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-track__step + .contact-track__step {
    border-top: 0;
    border-left: var(--ct-border);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-contact .contact-hero__coords {
    display: grid;
    grid-template-columns: 1fr;
  }

  .page-contact .contact-hero__coords li {
    border-right: 0;
    border-bottom: 2px solid var(--line);
  }

  .page-contact .contact-hero__coords li:nth-child(odd) {
    border-right: 0;
  }

  .page-contact .contact-hero__coords li:last-child {
    border-bottom: 0;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-body .grid--rail {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: clamp(1.6rem, 3vw, 2.8rem);
  }

  .page-contact .contact-index {
    position: sticky;
    top: calc(var(--header-offset) + 1.4rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-hero__status::before {
    animation: none;
  }

  .page-contact .contact-biz__card:hover {
    transform: none;
  }
}