.page-contact {
  --pc-line: rgba(201, 198, 190, 0.14);
  --pc-glow: rgba(34, 227, 210, 0.22);
  display: block;
  background: var(--c-obsidian);
  color: var(--c-text);
  font-family: var(--font-body);
  padding: clamp(18px, 3vw, 34px) 0 clamp(56px, 9vw, 120px);
  overflow-x: hidden;
}

.page-contact .pc-wrap {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  flex-direction: column;
  gap: clamp(36px, 6vw, 88px);
}

.page-contact :is(h1, h2, h3, p, ol, ul, figure) {
  margin-top: 0;
}

.page-contact h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--c-paper);
  margin-bottom: 10px;
}

.page-contact h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  color: var(--c-cyan-soft);
  margin-bottom: 6px;
}

.page-contact p {
  margin-bottom: 0;
  line-height: 1.8;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--c-ink);
  box-shadow: var(--shadow-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), 0 100%);
  padding: clamp(24px, 5vw, 60px) clamp(18px, 4vw, 52px) clamp(34px, 6vw, 62px);
}

.page-contact .pc-hero__img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.26;
  filter: saturate(0.8) contrast(1.06);
}

.page-contact .pc-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(110% 85% at 88% 4%, rgba(139, 92, 246, 0.3), transparent 62%),
    radial-gradient(95% 80% at 0% 96%, rgba(34, 227, 210, 0.2), transparent 60%),
    linear-gradient(180deg, rgba(11, 13, 18, 0.55), rgba(11, 13, 18, 0.92));
  pointer-events: none;
}

.page-contact .pc-hero__inner {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-contact .pc-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--c-paper);
  margin-bottom: 16px;
  max-width: 16em;
}

.page-contact .pc-hero__text {
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--c-text);
  max-width: 34em;
}

.page-contact .pc-hero__aside {
  border-left: 1px solid var(--line);
  padding-left: clamp(14px, 2.4vw, 20px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-contact .pc-aside__label {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  margin-bottom: 2px;
}

.page-contact .pc-hero__link {
  display: inline-block;
  color: var(--c-cyan);
  font-size: 15px;
  line-height: 1.6;
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 227, 210, 0.35);
  padding-bottom: 6px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .pc-hero__link:hover {
  color: var(--c-cyan-soft);
  border-bottom-color: var(--c-cyan-soft);
}

.page-contact .pc-hero__note {
  font-size: 13.5px;
  color: var(--c-text-dim);
}

/* ---------- 三个渠道 ---------- */
.page-contact .pc-channels {
  display: grid;
  gap: 1px;
  background: var(--pc-line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .pc-channel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3.4vw, 36px) clamp(14px, 2.4vw, 28px);
  background: var(--c-obsidian);
  transition: background 0.3s var(--ease);
}

.page-contact .pc-channel:hover {
  background: var(--c-ink);
}

.page-contact .pc-channel--mail {
  background: linear-gradient(160deg, rgba(34, 227, 210, 0.09), rgba(11, 13, 18, 0) 62%);
}

.page-contact .pc-channel--mail:hover {
  background: linear-gradient(160deg, rgba(34, 227, 210, 0.15), rgba(18, 23, 34, 0.9) 66%);
}

.page-contact .pc-channel__tag {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-text-dim);
}

.page-contact .pc-mail {
  font-family: var(--font-mono);
  font-size: clamp(16px, 3.6vw, 28px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--c-cyan);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .pc-tel {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--c-gold);
}

.page-contact .pc-addr {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-contact .pc-channel__desc {
  font-size: 14.5px;
  color: var(--c-text-dim);
  max-width: 30em;
}

/* ---------- 三项必填 ---------- */
.page-contact .pc-needs {
  display: grid;
  gap: clamp(22px, 3.6vw, 36px);
}

.page-contact .pc-needs__head {
  max-width: 44em;
}

.page-contact .pc-needs__head p {
  color: var(--c-text-dim);
  font-size: 15.5px;
}

.page-contact .pc-needs__body {
  display: grid;
  gap: clamp(22px, 3.6vw, 44px);
  align-items: start;
}

.page-contact .pc-needs__list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--pc-line);
}

.page-contact .pc-needs__list li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: clamp(10px, 2vw, 18px);
  background: var(--c-obsidian);
  padding: clamp(16px, 2.6vw, 24px) 12px clamp(16px, 2.6vw, 24px) 0;
  transition: background 0.3s var(--ease);
}

.page-contact .pc-needs__list li:hover {
  background: var(--c-ink);
}

.page-contact .pc-needs__no {
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: 0.04em;
  color: var(--c-cyan);
}

.page-contact .pc-needs__list p {
  font-size: 14.5px;
  color: var(--c-text-dim);
}

.page-contact .pc-needs__figure {
  margin: 0;
}

.page-contact .pc-needs__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.page-contact .pc-needs__figure .media__caption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--c-text-dim);
  line-height: 1.7;
}

/* ---------- 书写格式（暖纸面板） ---------- */
.page-contact .pc-template {
  background: var(--c-paper);
  color: var(--c-paper-ink);
  border-left: 3px solid var(--c-gold);
  padding: clamp(16px, 3vw, 26px) clamp(16px, 3vw, 28px);
  display: grid;
  gap: 10px;
}

.page-contact .pc-template__label {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(26, 23, 18, 0.6);
}

.page-contact .pc-template__line {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-paper-ink);
  overflow-wrap: anywhere;
}

.page-contact .pc-template__line .mono {
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(26, 23, 18, 0.62);
}

/* ---------- 处理时效 ---------- */
.page-contact .pc-timing__intro {
  font-size: 15px;
  color: var(--c-text-dim);
  max-width: 40em;
  margin-bottom: clamp(18px, 3vw, 26px);
}

.page-contact .pc-timing__grid {
  display: grid;
  gap: 1px;
  background: var(--pc-line);
  border: 1px solid var(--line);
}

.page-contact .pc-timing__card {
  background: var(--c-ink);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid transparent;
  outline: none;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-contact .pc-timing__card:hover,
.page-contact .pc-timing__card:focus {
  transform: translateY(-2px);
  border-color: rgba(34, 227, 210, 0.55);
  background: #151b27;
}

.page-contact .pc-timing__num {
  font-size: clamp(38px, 7vw, 58px);
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px rgba(34, 227, 210, 0.6);
  margin-bottom: 12px;
}

.page-contact .pc-timing__card p {
  font-size: 14.5px;
  color: var(--c-text-dim);
}

.page-contact .pc-timing__more {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  padding-top: 0;
  border-top: 1px dashed transparent;
  transition: max-height 0.35s var(--ease), opacity 0.35s var(--ease), padding-top 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-contact .pc-timing__card:hover .pc-timing__more,
.page-contact .pc-timing__card:focus .pc-timing__more {
  max-height: 12em;
  opacity: 1;
  padding-top: 12px;
  margin-top: 4px;
  border-top-color: var(--line);
}

/* ---------- 合作与延伸阅读 ---------- */
.page-contact .pc-collab {
  display: grid;
  gap: clamp(20px, 3.4vw, 34px);
  align-items: start;
}

.page-contact .pc-collab__panel {
  border: 1px solid var(--line);
  padding: clamp(20px, 4vw, 42px);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(139, 92, 246, 0.2), transparent 60%),
    linear-gradient(180deg, rgba(36, 28, 51, 0.55), rgba(11, 13, 18, 0.2));
  display: grid;
  gap: 14px;
  justify-items: start;
}

.page-contact .pc-collab__panel p {
  font-size: 15px;
  color: var(--c-text);
  max-width: 36em;
}

.page-contact .pc-collab__panel .eyebrow {
  color: var(--c-cyan);
}

.page-contact .pc-collab__side {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-contact .pc-collab__label {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  margin-bottom: 12px;
}

.page-contact .pc-links {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .pc-links a {
  display: block;
  font-size: 15px;
  line-height: 1.65;
  color: var(--c-text);
  text-decoration: none;
  border-bottom: 1px solid var(--pc-line);
  padding-bottom: 10px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .pc-links a:hover {
  color: var(--c-cyan);
  border-bottom-color: rgba(34, 227, 210, 0.5);
}

/* ---------- 响应式 ---------- */
@media (max-width: 899px) {
  .page-contact .pc-timing__more {
    max-height: none;
    opacity: 1;
    padding-top: 12px;
    margin-top: 4px;
    border-top-color: var(--line);
  }
}

@media (min-width: 860px) {
  .page-contact .pc-channels {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-contact .pc-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(210px, 0.75fr);
    align-items: end;
  }

  .page-contact .pc-needs__body {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

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

  .page-contact .pc-collab {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  }
}

@media (min-width: 1024px) {
  .page-contact .pc-wrap {
    padding-left: calc(var(--rail-w) + var(--gutter));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-timing__card,
  .page-contact .pc-timing__more,
  .page-contact .pc-channel,
  .page-contact .pc-hero__link,
  .page-contact .pc-links a {
    transition: none;
  }

  .page-contact .pc-timing__card:hover,
  .page-contact .pc-timing__card:focus {
    transform: none;
  }
}
<<<END>>>