.page-contact {
  --pc-line: rgba(22, 194, 213, .13);
  --pc-line-soft: rgba(26, 20, 16, .09);
  --pc-muted: rgba(26, 20, 16, .78);
  --pc-muted-strong: rgba(26, 20, 16, .88);
  background-color: var(--paper-100);
  background-image:
    linear-gradient(to right, var(--pc-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--pc-line) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--ink-900);
  overflow-x: hidden;
}

/* ---------- 通用内联元素 ---------- */
.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .04em;
  color: var(--sea-700);
}

.page-contact .breadcrumbs li {
  display: inline-flex;
  align-items: center;
}

.page-contact .breadcrumbs li + li::before {
  content: "/";
  display: inline-block;
  margin: 0 .6em;
  color: var(--cyan-500);
}

.page-contact .breadcrumbs a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  color: var(--cyan-500);
  border-bottom-color: var(--cyan-500);
}

.page-contact .section-head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .section-head__coord {
  margin: 0 0 .4rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--cyan-500);
}

.page-contact .section-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.6vw, var(--fs-28));
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--sea-900);
}

.page-contact h1 {
  margin: .5rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 6.2vw, var(--fs-56));
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--sea-900);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(26px, 5vw, 56px) 0 clamp(30px, 5vw, 64px);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 5vw, 48px);
  align-items: start;
}

.page-contact .contact-hero__coord {
  margin: 1.25rem 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--gold-700);
}

.page-contact .contact-hero__intro {
  margin: 1.1rem 0 0;
  max-width: 34em;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--pc-muted-strong);
}

.page-contact .contact-hero__quick {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--pc-line-soft);
  border-top: 1px solid var(--pc-line-soft);
  border-bottom: 1px solid var(--pc-line-soft);
}

.page-contact .contact-hero__quick a {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .5rem 1rem;
  padding: .85rem .25rem;
  text-decoration: none;
  color: var(--sea-700);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-contact .contact-hero__quick a:hover,
.page-contact .contact-hero__quick a:focus-visible {
  color: var(--cyan-500);
  padding-left: .6rem;
}

.page-contact .contact-hero__quick-key {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--gold-700);
}

.page-contact .contact-hero__quick-val {
  font-size: var(--fs-14);
  word-break: break-all;
}

.page-contact .contact-hero__media {
  margin: 0;
  border: 1px solid var(--pc-line-soft);
  background: var(--sea-900);
}

.page-contact .contact-hero__media .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .contact-hero__media .media-frame__caption {
  padding: .75rem 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--cyan-200);
  background: var(--sea-900);
  border-top: 1px solid rgba(168, 237, 244, .22);
}

/* ---------- 联系渠道 ---------- */
.page-contact .contact-channels {
  padding: clamp(30px, 5vw, 60px) 0;
  border-top: 1px solid var(--pc-line-soft);
}

.page-contact .contact-channels__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--pc-line-soft);
  border: 1px solid var(--pc-line-soft);
}

.page-contact .channel-plate {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  padding: clamp(18px, 3vw, 28px);
  background: var(--paper-100);
  transition: background var(--dur) var(--ease);
}

.page-contact .channel-plate::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 46px;
  height: 2px;
  background: var(--cyan-500);
}

.page-contact .channel-plate:hover {
  background: #FBF7ED;
}

.page-contact .channel-plate:target {
  background: rgba(168, 237, 244, .3);
  box-shadow: inset 0 0 0 1px var(--cyan-500);
}

.page-contact .channel-plate__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--gold-700);
}

.page-contact .channel-plate__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--sea-900);
  word-break: break-word;
}

.page-contact .channel-plate__note {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--pc-muted);
}

.page-contact .copy-btn {
  align-self: flex-start;
  margin-top: auto;
  padding: .42rem .9rem;
  font-family: var(--font-body);
  font-size: var(--fs-14);
  line-height: 1.4;
  color: var(--sea-700);
  background: transparent;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  background: var(--cyan-200);
  border-color: var(--cyan-500);
  color: var(--sea-900);
}

.page-contact .copy-btn:focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: 2px;
}

.page-contact .copy-btn.is-done {
  background: var(--cyan-500);
  border-color: var(--cyan-500);
  color: var(--sea-900);
}

/* ---------- 咨询类型 ---------- */
.page-contact .contact-types {
  padding: clamp(32px, 6vw, 72px) 0;
  border-top: 1px solid var(--pc-line-soft);
}

.page-contact .contact-types__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-contact .contact-types__media {
  margin: 0;
  border: 1px solid var(--pc-line-soft);
  background: var(--sea-700);
}

.page-contact .contact-types__media .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .contact-types__media .media-frame__caption {
  padding: .7rem .95rem;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--cyan-200);
  background: var(--sea-900);
  border-top: 1px solid rgba(168, 237, 244, .22);
}

.page-contact .type-chips {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: clamp(20px, 3vw, 28px);
}

.page-contact .type-chip {
  display: inline-flex;
  align-items: center;
  padding: .45rem .95rem;
  font-size: var(--fs-14);
  line-height: 1.4;
  color: var(--sea-700);
  text-decoration: none;
  background: rgba(168, 237, 244, .3);
  border: 1px solid var(--line-cyan);
  border-radius: 999px;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-contact .type-chip:hover,
.page-contact .type-chip:focus-visible {
  background: var(--sea-900);
  color: var(--cyan-200);
  border-color: var(--sea-900);
}

.page-contact .type-block {
  position: relative;
  padding-left: 1.5rem;
  scroll-margin-top: 120px;
}

.page-contact .type-block::before {
  content: "";
  position: absolute;
  left: 0;
  top: .35em;
  bottom: .35em;
  width: 2px;
  background: linear-gradient(to bottom, var(--cyan-500), rgba(22, 194, 213, .12));
}

.page-contact .type-block + .type-block {
  margin-top: 1.6rem;
  padding-top: 1.6rem;
}

.page-contact .type-block + .type-block::after {
  content: "";
  position: absolute;
  top: 0;
  left: 1.5rem;
  right: 0;
  height: 1px;
  background: var(--pc-line-soft);
}

.page-contact .type-block:target {
  background: rgba(168, 237, 244, .26);
  box-shadow: 0 0 0 1px var(--cyan-500);
}

.page-contact .type-block h3 {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  margin: 0 0 .8rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-18);
  line-height: 1.4;
  color: var(--sea-900);
}

.page-contact .type-block__num {
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--orange-500);
}

.page-contact .type-block__meta {
  margin: 0;
}

.page-contact .type-block__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .25rem;
  padding: .6rem 0;
  border-bottom: 1px solid rgba(26, 20, 16, .08);
}

.page-contact .type-block__row:last-child {
  border-bottom: none;
}

.page-contact .type-block__row dt {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--gold-700);
}

.page-contact .type-block__row dd {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--pc-muted-strong);
}

/* ---------- 编号核验主题带 ---------- */
.page-contact .verify-band {
  position: relative;
  padding: clamp(34px, 6vw, 68px) 0;
  background: var(--sea-900);
  color: var(--paper-100);
  overflow: hidden;
}

.page-contact .verify-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(168, 237, 244, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(168, 237, 244, .07) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.page-contact .verify-band::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: clamp(80px, 22vw, 240px);
  height: 3px;
  background: linear-gradient(to right, var(--cyan-500), transparent);
}

.page-contact .verify-band__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-contact .verify-band__coord {
  margin: 0 0 .6rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--cyan-500);
}

.page-contact .verify-band__text h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3.4vw, var(--fs-28));
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--paper-100);
}

.page-contact .verify-band__text p {
  margin: 0 0 1rem;
  max-width: 38em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: rgba(247, 241, 228, .84);
}

.page-contact .verify-band__text p:last-child {
  margin-bottom: 0;
}

.page-contact .verify-band__panel {
  padding: clamp(18px, 3vw, 26px);
  background: rgba(11, 59, 92, .72);
  border: 1px solid rgba(168, 237, 244, .24);
  border-radius: var(--radius);
}

.page-contact .verify-band__facts {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: rgba(168, 237, 244, .16);
}

.page-contact .verify-band__fact {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  padding: .8rem .9rem;
  background: rgba(6, 35, 58, .82);
}

.page-contact .verify-band__fact dt {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--cyan-200);
}

.page-contact .verify-band__fact dd {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--paper-100);
}

.page-contact .verify-band__fact .u-mono {
  font-size: var(--fs-22);
  color: var(--gold-500);
}

/* ---------- 合作与渠道 ---------- */
.page-contact .coop {
  padding: clamp(32px, 6vw, 72px) 0;
}

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

.page-contact .coop__lead h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.6vw, var(--fs-28));
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--sea-900);
}

.page-contact .coop__lead p {
  margin: 0 0 1rem;
  max-width: 34em;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--pc-muted-strong);
}

.page-contact .coop__lead .btn {
  margin-top: .6rem;
}

.page-contact .coop__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--pc-line-soft);
  border: 1px solid var(--pc-line-soft);
}

.page-contact .coop__list li {
  padding: clamp(16px, 2.6vw, 22px);
  background: #FBF7ED;
}

.page-contact .coop__list h3 {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-16);
  line-height: 1.45;
  color: var(--teal-600);
}

.page-contact .coop__list p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--pc-muted);
}

/* ---------- 底部横向主题带 ---------- */
.page-contact .prep-band {
  padding: clamp(30px, 5vw, 60px) 0 clamp(40px, 6vw, 80px);
  border-top: 1px solid var(--pc-line-soft);
}

.page-contact .prep-band__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--pc-line-soft);
  border: 1px solid var(--pc-line-soft);
}

.page-contact .prep-band__item a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "idx name"
    "idx desc";
  column-gap: .9rem;
  row-gap: .35rem;
  padding: clamp(16px, 2.6vw, 22px);
  background: var(--paper-100);
  text-decoration: none;
  color: inherit;
  transition: background var(--dur) var(--ease);
}

.page-contact .prep-band__item a:hover,
.page-contact .prep-band__item a:focus-visible {
  background: rgba(168, 237, 244, .34);
}

.page-contact .prep-band__idx {
  grid-area: idx;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  font-size: var(--fs-14);
  color: var(--sea-900);
  background: var(--cyan-200);
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius);
}

.page-contact .prep-band__name {
  grid-area: name;
  align-self: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-16);
  line-height: 1.4;
  color: var(--sea-900);
}

.page-contact .prep-band__desc {
  grid-area: desc;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--pc-muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .contact-hero__quick {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

  .page-contact .type-block__row {
    grid-template-columns: 6.5rem minmax(0, 1fr);
    gap: 1rem;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

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

  .page-contact .contact-types__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  }

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

  .page-contact .coop__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

  .page-contact .prep-band__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-hero__intro {
    font-size: var(--fs-18);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .copy-btn,
  .page-contact .type-chip,
  .page-contact .prep-band__item a,
  .page-contact .contact-hero__quick a {
    transition: none;
  }
}
```