.page-contact {
  --pc-note-bg: linear-gradient(165deg, rgba(18, 41, 77, .96), rgba(10, 23, 48, .98));
  --pc-shadow: 0 22px 48px -30px rgba(0, 0, 0, .95);
  --pc-rule: 1px solid var(--line);
  --pc-focus: 2px solid var(--cyan);
  color: var(--white);
  background: var(--ink);
  overflow-x: hidden;
}

.page-contact .section {
  padding: clamp(2.5rem, 6vw, 4.6rem) 0;
}

.page-contact .contact-h2 {
  margin: .7rem 0 0;
  font-size: clamp(1.55rem, 4.2vw, 2.45rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.025em;
  text-wrap: balance;
}

.page-contact .eyebrow {
  margin: 0;
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-contact .lede {
  color: var(--mist);
  line-height: 1.8;
  max-width: 68ch;
}

.page-contact .section-head {
  max-width: 780px;
}

.page-contact .section-head .lede {
  margin: .85rem 0 0;
  font-size: .96rem;
}

/* ---------- 刊头 ---------- */
.page-contact .contact-masthead {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 2.4rem) 0 clamp(2.4rem, 6vw, 4rem);
  background:
    radial-gradient(110% 80% at 82% -10%, rgba(53, 242, 226, .16), transparent 62%),
    radial-gradient(90% 70% at -10% 40%, rgba(255, 90, 54, .12), transparent 60%),
    var(--ink);
}

.page-contact .contact-masthead::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: .5;
  background-image:
    linear-gradient(rgba(36, 70, 111, .45) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 70, 111, .45) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: radial-gradient(80% 62% at 50% 18%, #000 0%, transparent 78%);
  mask-image: radial-gradient(80% 62% at 50% 18%, #000 0%, transparent 78%);
}

.page-contact .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: 0 0 clamp(1.4rem, 4vw, 2.4rem);
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-contact .breadcrumb__list li + li::before {
  content: "/";
  margin-right: .45rem;
  color: var(--line);
}

.page-contact .breadcrumb__list a {
  color: var(--mist);
  text-decoration: none;
}

.page-contact .breadcrumb__list a:hover,
.page-contact .breadcrumb__list a:focus-visible {
  color: var(--cyan);
}

.page-contact .breadcrumb__current {
  color: var(--cyan-soft);
}

.page-contact .masthead-grid {
  display: grid;
  gap: 1.9rem;
}

.page-contact .contact-title {
  margin: .85rem 0 0;
  font-size: clamp(2.05rem, 7.2vw, 4.7rem);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -.035em;
  text-wrap: balance;
}

.page-contact .contact-title em {
  display: block;
  margin-top: .1em;
  font-style: normal;
  color: var(--cyan);
  transform: skewX(-2.5deg);
  transform-origin: left bottom;
}

.page-contact .contact-lede {
  margin: 1.15rem 0 1.7rem;
  font-size: clamp(.96rem, 1.7vw, 1.08rem);
  max-width: 48ch;
}

.page-contact .contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

.page-contact .contact-note {
  position: relative;
  padding: 1.5rem 1.35rem 1.6rem;
  background: var(--pc-note-bg);
  border: var(--pc-rule);
  box-shadow: 10px 10px 0 -1px rgba(18, 41, 77, .55), var(--pc-shadow);
}

.page-contact .contact-note::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 68px;
  height: 3px;
  background: var(--flame);
}

.page-contact .contact-note__label {
  margin: 0;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--mist);
}

.page-contact .contact-note__big {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .55rem;
  margin: .55rem 0 1rem;
  font-size: .86rem;
  color: var(--mist);
}

.page-contact .contact-note__big .mono {
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(1.45rem, 4vw, 2rem);
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-contact .contact-note__list {
  display: grid;
  gap: .6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-note__list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: .88rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .contact-note__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 9px;
  height: 2px;
  background: var(--cyan);
}

/* ---------- 联络方式 ---------- */
.page-contact .contact-channels {
  border-top: var(--pc-rule);
  background: linear-gradient(180deg, rgba(10, 23, 48, .9), var(--ink) 70%);
}

.page-contact .channel-grid {
  display: grid;
  gap: 1.6rem;
  margin-top: 1.8rem;
}

.page-contact .channel-item {
  padding: 1.15rem 0 1.35rem;
  border-top: var(--pc-rule);
}

.page-contact .channel-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .channel-item--plain {
  border-top: 0;
  padding-bottom: 0;
}

.page-contact .channel-label {
  margin: 0 0 .4rem;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--mist);
}

.page-contact .channel-value {
  margin: 0;
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(1.1rem, 4.6vw, 2.1rem);
  line-height: 1.18;
  letter-spacing: -.025em;
  color: var(--white);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel-hint {
  margin: .65rem 0 0;
  max-width: 46ch;
  font-size: .89rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .channel-item--plain .btn {
  margin-top: .9rem;
}

.page-contact .channel-figure {
  margin: 0;
}

.page-contact .channel-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: var(--pc-rule);
  object-fit: cover;
  filter: saturate(.92) contrast(1.05);
}

.page-contact .channel-figure figcaption {
  margin-top: .65rem;
  font-size: .78rem;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 支持范围 ---------- */
.page-contact .support-list {
  margin-top: 1.7rem;
  border-bottom: var(--pc-rule);
}

.page-contact .support-item {
  border-top: var(--pc-rule);
}

.page-contact .support-item summary {
  display: flex;
  align-items: baseline;
  gap: .9rem;
  padding: 1.1rem 0;
  list-style: none;
  cursor: pointer;
  font-weight: 700;
  font-size: clamp(.98rem, 2.4vw, 1.14rem);
  color: var(--white);
  transition: color var(--speed) var(--ease);
}

.page-contact .support-item summary::-webkit-details-marker {
  display: none;
}

.page-contact .support-item summary:hover {
  color: var(--cyan);
}

.page-contact .support-item summary:focus-visible {
  outline: var(--pc-focus);
  outline-offset: 4px;
}

.page-contact .support-num {
  flex: none;
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-contact .support-title {
  flex: 1 1 auto;
  min-width: 0;
}

.page-contact .support-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--flame);
}

.page-contact .support-item[open] summary::after {
  content: "–";
}

.page-contact .support-body {
  padding: 0 0 1.4rem;
}

.page-contact .support-body p {
  margin: 0 0 .75rem;
  max-width: 72ch;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .support-body p:last-child {
  margin-bottom: 0;
}

.page-contact .support-body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .support-body a:focus-visible {
  outline: var(--pc-focus);
  outline-offset: 3px;
}

/* ---------- 联系前准备 ---------- */
.page-contact .contact-prepare {
  background: linear-gradient(180deg, var(--ink), rgba(10, 23, 48, .85));
}

.page-contact .prepare-grid {
  display: grid;
  gap: .9rem;
  margin-top: 1.8rem;
}

.page-contact .prepare-card {
  position: relative;
  padding: 1.2rem 1.1rem 1.45rem;
  background: linear-gradient(180deg, rgba(18, 41, 77, .72), rgba(10, 23, 48, .55));
  border: var(--pc-rule);
  transition: transform var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-contact .prepare-card:hover {
  transform: translateY(-3px);
  border-color: rgba(53, 242, 226, .5);
}

.page-contact .prepare-num {
  display: block;
  margin-bottom: .75rem;
  font-family: var(--mono);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -.03em;
  color: var(--cyan);
  opacity: .5;
}

.page-contact .prepare-card h3 {
  margin: 0 0 .5rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-contact .prepare-card p {
  margin: 0;
  font-size: .87rem;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 合作 ---------- */
.page-contact .contact-partner {
  border-top: var(--pc-rule);
  border-bottom: var(--pc-rule);
  background:
    radial-gradient(90% 70% at 100% 0%, rgba(53, 242, 226, .1), transparent 62%),
    var(--cabin);
}

.page-contact .partner-wrap {
  display: grid;
  gap: 1.8rem;
}

.page-contact .partner-lead .lede {
  margin: 1rem 0 0;
  font-size: .94rem;
}

.page-contact .partner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin-top: 1.2rem;
}

.page-contact .partner-tags .tag {
  padding: .45rem .8rem;
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--cyan-soft);
  background: rgba(18, 41, 77, .7);
  border: 1px solid var(--line);
}

.page-contact .partner-aside {
  padding: 1.4rem 1.25rem 1.5rem;
  border: var(--pc-rule);
  border-left: 3px solid var(--flame);
  background: rgba(5, 11, 26, .55);
}

.page-contact .partner-aside__title {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 700;
}

.page-contact .partner-steps {
  display: grid;
  gap: .7rem;
  margin: 0 0 1.2rem;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-contact .partner-steps li {
  display: flex;
  gap: .7rem;
  align-items: baseline;
  font-size: .89rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .partner-steps .mono {
  flex: none;
  font-family: var(--mono);
  font-size: .74rem;
  font-weight: 700;
  color: var(--cyan);
  border: 1px solid var(--line);
  padding: .1rem .38rem;
}

.page-contact .partner-mail {
  margin: 0 0 1.2rem;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .partner-mail .mono {
  font-family: var(--mono);
  color: var(--white);
  overflow-wrap: anywhere;
}

/* ---------- 到访与邮寄 ---------- */
.page-contact .city-strip {
  margin: 1.5rem 0 0;
  border: var(--pc-rule);
  background: var(--cabin);
  overflow: hidden;
}

.page-contact .city-strip svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-contact .visit-grid {
  display: grid;
  gap: 1.6rem;
  margin-top: 1.5rem;
}

.page-contact .visit-addr {
  margin: 0 0 1rem;
  padding: .85rem 0 .85rem 1rem;
  border-left: 3px solid var(--cyan);
  font-family: var(--mono);
  font-size: clamp(.95rem, 2.8vw, 1.25rem);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--cyan-soft);
  overflow-wrap: anywhere;
}

.page-contact .visit-info p {
  margin: 0 0 .9rem;
  max-width: 60ch;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .visit-info p:last-child {
  margin-bottom: 0;
}

.page-contact .visit-figure {
  margin: 0;
}

.page-contact .visit-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: var(--pc-rule);
  object-fit: cover;
}

.page-contact .visit-figure figcaption {
  margin-top: .6rem;
  font-size: .78rem;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 按钮焦点 ---------- */
.page-contact .btn:focus-visible {
  outline: var(--pc-focus);
  outline-offset: 3px;
}

@media (min-width: 720px) {
  .page-contact .prepare-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
  }
}

@media (min-width: 900px) {
  .page-contact .masthead-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, .85fr);
    gap: 2.75rem;
    align-items: end;
  }

  .page-contact .channel-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 2.75rem;
    align-items: start;
  }

  .page-contact .partner-wrap {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 2.5rem;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .visit-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .9fr);
    gap: 2.5rem;
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .page-contact .prepare-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .prepare-card,
  .page-contact .support-item summary {
    transition: none;
  }

  .page-contact .prepare-card:hover {
    transform: none;
  }
}
<<<END>>>