.page-contact {
  --c-line: rgba(67, 240, 207, 0.26);
  --c-line-dark: rgba(11, 42, 37, 0.14);
  --c-shadow: 0 24px 54px -30px rgba(6, 23, 19, 0.5);
  background: var(--paper);
  color: var(--ink-900);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(1.25rem, 3vw, 2rem) 0 clamp(3rem, 8vw, 5.5rem);
  background: var(--ink-950);
  color: var(--paper);
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-contact .contact-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.page-contact .contact-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(155deg, rgba(6, 23, 19, 0.96) 0%, rgba(11, 42, 37, 0.8) 52%, rgba(67, 240, 207, 0.24) 100%);
}

.page-contact .contact-hero__inner {
  position: relative;
  max-width: 54rem;
}

.page-contact .contact-hero .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 1.4rem;
  padding: 0;
  list-style: none;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.page-contact .contact-hero .breadcrumbs__link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-contact .contact-hero .breadcrumbs__link:hover,
.page-contact .contact-hero .breadcrumbs__link:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-contact .contact-hero .breadcrumbs__sep {
  color: rgba(245, 251, 248, 0.42);
}

.page-contact .contact-hero .breadcrumbs__current {
  color: rgba(245, 251, 248, 0.82);
}

.page-contact .contact-hero .eyebrow {
  color: var(--cyan);
  letter-spacing: 0.16em;
}

.page-contact .contact-hero__title {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.15rem, 7.4vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  max-width: 16ch;
}

.page-contact .contact-hero__lede {
  margin: clamp(1rem, 2.5vw, 1.5rem) 0 0;
  max-width: 46rem;
  font-size: clamp(0.98rem, 2.4vw, 1.12rem);
  line-height: 1.8;
  color: rgba(245, 251, 248, 0.84);
}

.page-contact .contact-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.4rem, 4vw, 2rem);
}

/* ---------- 通用小件 ---------- */
.page-contact .section__head {
  max-width: 46rem;
}

.page-contact .section__title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0.5rem 0 0;
}

.page-contact .section__lede {
  margin: 0.85rem 0 0;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .inline-link {
  color: var(--cyan-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(14, 143, 125, 0.45);
}

.page-contact .inline-link:hover,
.page-contact .inline-link:focus-visible {
  color: var(--ink-900);
  border-bottom-color: var(--ink-900);
}

/* ---------- 通道总览 ---------- */
.page-contact .contact-channels {
  padding: clamp(2.75rem, 6vw, 5rem) 0;
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 2.75rem);
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-contact .channel-line {
  list-style: none;
  margin: 0;
  padding: 0 0 0 2rem;
  border-left: 1px solid var(--c-line);
  display: grid;
  gap: clamp(1.35rem, 3vw, 1.9rem);
}

.page-contact .channel-line__item {
  position: relative;
}

.page-contact .channel-line__node {
  position: absolute;
  left: calc(-2rem - 6px);
  top: 0.42rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(67, 240, 207, 0.18);
}

.page-contact .channel-line__item:nth-child(2) .channel-line__node {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 138, 61, 0.2);
}

.page-contact .channel-line__item:nth-child(4) .channel-line__node {
  background: var(--cyan-deep);
  box-shadow: 0 0 0 4px rgba(14, 143, 125, 0.16);
}

.page-contact .channel-line__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-contact .channel-line__title {
  margin: 0.35rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 2.8vw, 1.3rem);
  font-weight: 700;
  line-height: 1.35;
}

.page-contact .channel-line__text {
  margin: 0.45rem 0 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .channel-line__meta {
  margin: 0.55rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--cyan-deep);
  overflow-wrap: anywhere;
  user-select: all;
}

.page-contact .channel-card {
  display: grid;
  gap: 1.1rem;
  padding: clamp(1rem, 3vw, 1.5rem);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(11, 42, 37, 0.07);
  background: linear-gradient(168deg, var(--ice) 0%, rgba(207, 239, 245, 0.42) 100%);
  box-shadow: var(--c-shadow);
}

.page-contact .channel-card .figure__frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background: linear-gradient(140deg, var(--ink-900), var(--cyan-deep));
}

.page-contact .channel-card .figure__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .channel-card .figure__caption {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--slate);
}

.page-contact .channel-card__title {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 3vw, 1.4rem);
  font-weight: 700;
  line-height: 1.32;
}

.page-contact .channel-card__text {
  margin: 0.55rem 0 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .channel-card__num {
  margin: 0.9rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(11, 42, 37, 0.14);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--ink-900);
}

/* ---------- 邮箱与电话 ---------- */
.page-contact .contact-direct {
  padding: clamp(2.75rem, 6vw, 5rem) 0;
  background: var(--ice);
}

.page-contact .contact-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(0.85rem, 2vw, 1.15rem);
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.page-contact .contact-block {
  display: grid;
  gap: 0.6rem;
  align-content: start;
  padding: clamp(1.2rem, 3vw, 1.7rem);
  border-radius: var(--radius-md);
}

.page-contact .contact-block--paper {
  background: var(--paper);
  border: 1px solid rgba(11, 42, 37, 0.1);
}

.page-contact .contact-block--ink {
  background: var(--ink-900);
  color: var(--paper);
  border: 1px solid rgba(67, 240, 207, 0.22);
}

.page-contact .contact-block .tag {
  justify-self: start;
}

.page-contact .contact-block__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.02rem, 3vw, 1.28rem);
  line-height: 1.4;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
  user-select: all;
}

.page-contact .contact-block__value--mono {
  color: var(--cyan);
}

.page-contact .contact-block--paper .contact-block__value {
  color: var(--ink-900);
}

.page-contact .contact-block__text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .contact-block--ink .contact-block__text {
  color: rgba(245, 251, 248, 0.78);
}

.page-contact .contact-note {
  margin: clamp(1.35rem, 3vw, 1.9rem) 0 0;
  padding-left: 0.95rem;
  border-left: 3px solid var(--orange);
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 合作 ---------- */
.page-contact .contact-coop {
  padding: clamp(2.75rem, 6vw, 5rem) 0;
}

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(0.85rem, 2vw, 1.15rem);
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.page-contact .coop-card {
  position: relative;
  padding: clamp(1.15rem, 3vw, 1.6rem) clamp(1.15rem, 3vw, 1.6rem) clamp(1.15rem, 3vw, 1.6rem) clamp(1.5rem, 3.5vw, 1.9rem);
  border-radius: var(--radius-md);
  background: var(--paper);
  border: 1px solid var(--c-line-dark);
}

.page-contact .coop-card::before {
  content: "";
  position: absolute;
  left: 0.7rem;
  top: 1.35rem;
  bottom: 1.35rem;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(var(--cyan), var(--cyan-deep));
}

.page-contact .coop-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-contact .coop-card__text {
  margin: 0.5rem 0 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .coop-faq {
  display: grid;
  gap: 0.6rem;
  margin-top: clamp(1.5rem, 4vw, 2.1rem);
  max-width: 52rem;
}

.page-contact .coop-faq .disclosure {
  background: rgba(207, 239, 245, 0.38);
  border: 1px solid var(--c-line-dark);
  border-radius: var(--radius-sm);
  padding: 0 1rem;
}

.page-contact .coop-faq .disclosure__summary {
  cursor: pointer;
  padding: 0.9rem 0;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--ink-900);
}

.page-contact .coop-faq .disclosure__summary:focus-visible {
  outline: 2px solid var(--cyan-deep);
  outline-offset: 2px;
}

.page-contact .coop-faq .disclosure__body {
  padding: 0 0 0.95rem;
}

.page-contact .coop-faq .disclosure__body p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--slate);
}

/* ---------- 反馈清单 ---------- */
.page-contact .contact-prep {
  padding: clamp(2.75rem, 6vw, 5rem) 0;
  background: var(--ink-900);
  color: var(--paper);
}

.page-contact .contact-prep__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 2.75rem);
}

.page-contact .contact-prep .eyebrow {
  color: var(--cyan);
}

.page-contact .contact-prep .section__title {
  color: var(--paper);
}

.page-contact .contact-prep .section__lede {
  color: rgba(245, 251, 248, 0.74);
}

.page-contact .contact-prep__aside {
  margin: 1rem 0 0;
  padding-left: 0.9rem;
  border-left: 3px solid var(--lemon);
  font-size: 0.88rem;
  line-height: 1.75;
  color: rgba(245, 251, 248, 0.66);
}

.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(245, 251, 248, 0.055);
  border: 1px solid rgba(67, 240, 207, 0.17);
}

.page-contact .checklist__mark {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 0.18rem;
}

.page-contact .checklist__title {
  margin: 0;
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .checklist__text {
  margin: 0.22rem 0 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(245, 251, 248, 0.72);
}

/* ---------- 地址与备案信息带 ---------- */
.page-contact .contact-info {
  padding: clamp(2.25rem, 5vw, 3.5rem) 0;
  background: var(--ink-950);
  color: var(--paper);
  border-top: 1px solid var(--c-line);
}

.page-contact .contact-info__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.1rem, 3vw, 1.6rem);
}

.page-contact .contact-info__label {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .contact-info__value {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: rgba(245, 251, 248, 0.86);
  overflow-wrap: anywhere;
}

.page-contact .contact-info__value--mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.page-contact .contact-info__link {
  display: inline-block;
  margin: 0 0.9rem 0.35rem 0;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(67, 240, 207, 0.35);
}

.page-contact .contact-info__link:hover,
.page-contact .contact-info__link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.page-contact .contact-info__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 滚动显现 ---------- */
.page-contact.js-reveal .page-contact [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
}

.page-contact.js-reveal .page-contact [data-reveal][data-reveal-delay="1"] {
  transition-delay: 0.08s;
}

.page-contact.js-reveal .page-contact [data-reveal][data-reveal-delay="2"] {
  transition-delay: 0.16s;
}

.page-contact.js-reveal .page-contact [data-reveal][data-reveal-delay="3"] {
  transition-delay: 0.24s;
}

.page-contact.js-reveal .page-contact [data-reveal][data-reveal-delay="4"] {
  transition-delay: 0.32s;
}

.page-contact.js-reveal .page-contact [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
  transition: opacity 0.62s var(--ease), transform 0.62s var(--ease);
}

@media (prefers-reduced-motion: reduce) {
  .page-contact.js-reveal .page-contact [data-reveal],
  .page-contact.js-reveal .page-contact [data-reveal].is-revealed {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

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

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

@media (min-width: 760px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .channel-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-contact .channel-card {
    position: sticky;
    top: 2rem;
  }

  .page-contact .contact-prep__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-info__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .contact-info__block--wide {
    grid-column: 1 / -1;
    padding-top: 0.9rem;
    border-top: 1px solid rgba(67, 240, 207, 0.18);
  }
}
<<<END>>>