.page-contact {
  --pc-lake-shadow: 6px 6px 0 rgba(30, 155, 155, 0.5);
  --pc-sunset-shadow: 6px 6px 0 rgba(240, 138, 75, 0.42);
  --pc-dark-card: rgba(16, 31, 60, 0.78);
  --pc-deep-text: #14203a;
  color: var(--ink);
}

.page-contact .rule-gap {
  padding-top: clamp(30px, 5vw, 52px);
}

/* ---------- 面包屑 ---------- */
.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-contact .crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 216, 232, 0.35);
  padding-bottom: 1px;
}

.page-contact .crumbs a:hover,
.page-contact .crumbs a:focus-visible {
  color: var(--lake);
  border-color: var(--lake);
}

.page-contact .crumbs__sep {
  color: var(--earth);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 6vw, 62px) 0 clamp(44px, 8vw, 92px);
  background:
    radial-gradient(85% 70% at 88% 6%, rgba(30, 155, 155, 0.28), transparent 62%),
    linear-gradient(168deg, var(--night-2) 0%, var(--night-3) 46%, var(--night) 100%);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero__slash {
  position: absolute;
  top: -18%;
  right: -16%;
  width: 62%;
  height: 130%;
  background: linear-gradient(162deg, rgba(30, 155, 155, 0.2), rgba(91, 91, 214, 0.12) 58%, transparent 82%);
  transform: rotate(-11deg);
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 5vw, 44px);
}

.page-contact .contact-hero__kicker {
  color: var(--lake);
  letter-spacing: 0.16em;
}

.page-contact .contact-hero h1 {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 6vw, 3.3rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.page-contact .contact-hero__intro {
  max-width: 56ch;
  margin: 18px 0 28px;
  font-size: clamp(0.94rem, 1.6vw, 1.04rem);
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .channel-grid {
  display: grid;
  gap: 14px;
}

.page-contact .channel {
  position: relative;
  display: block;
  padding: 16px 18px 18px;
  background: rgba(16, 31, 60, 0.84);
  border: 2px solid rgba(201, 216, 232, 0.3);
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.page-contact .channel--mail {
  box-shadow: var(--pc-lake-shadow);
}

.page-contact .channel--tel {
  box-shadow: var(--pc-sunset-shadow);
}

.page-contact .channel:hover,
.page-contact .channel:focus-visible {
  transform: translate(-3px, -3px);
  border-color: var(--lake);
  background: rgba(23, 120, 122, 0.3);
}

.page-contact .channel--mail:hover,
.page-contact .channel--mail:focus-visible {
  box-shadow: 9px 9px 0 rgba(30, 155, 155, 0.58);
}

.page-contact .channel--tel:hover,
.page-contact .channel--tel:focus-visible {
  box-shadow: 9px 9px 0 rgba(240, 138, 75, 0.5);
}

.page-contact .channel__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--lake);
}

.page-contact .channel--tel .channel__label {
  color: var(--sunset);
}

.page-contact .channel__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(0.82rem, 3.2vw, 1.32rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

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

.page-contact .channel__note {
  display: block;
  margin-top: 10px;
  font-size: 0.79rem;
  line-height: 1.68;
  color: var(--muted);
}

.page-contact .contact-meta {
  display: grid;
  gap: 10px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-meta div {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-contact .contact-meta dt {
  flex: none;
  min-width: 5.4em;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--earth);
}

.page-contact .contact-meta dd {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .media-frame {
  display: block;
  margin: 0;
  overflow: hidden;
  background: var(--night-2);
}

.page-contact .contact-hero__media {
  aspect-ratio: 16 / 11;
  border: 2px solid rgba(201, 216, 232, 0.28);
  box-shadow: 10px 10px 0 rgba(30, 155, 155, 0.22);
}

.page-contact .contact-hero__media img,
.page-contact .collab__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 合作方向 ---------- */
.page-contact .collab {
  padding-bottom: clamp(36px, 6vw, 62px);
}

.page-contact .collab__head {
  display: grid;
  gap: 24px;
}

.page-contact .collab__headText h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.38rem, 3.6vw, 2.05rem);
  line-height: 1.32;
  letter-spacing: -0.01em;
}

.page-contact .collab__headText > p {
  max-width: 52ch;
  margin: 0 0 20px;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .collab__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .collab__tabs a {
  display: inline-block;
  padding: 7px 12px;
  font-family: var(--font-mono);
  font-size: 0.71rem;
  letter-spacing: 0.08em;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid var(--line-strong);
  background: rgba(16, 31, 60, 0.6);
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.page-contact .collab__tabs a:hover,
.page-contact .collab__tabs a:focus-visible {
  color: var(--night);
  background: var(--lake);
  border-color: var(--lake);
}

.page-contact .collab__media {
  aspect-ratio: 4 / 3;
  border: 2px solid rgba(201, 216, 232, 0.22);
  box-shadow: 8px 8px 0 rgba(231, 213, 181, 0.16);
  overflow: hidden;
}

.page-contact .collab__list {
  display: grid;
  gap: 16px;
  margin-top: clamp(24px, 4vw, 36px);
}

.page-contact .collab-item {
  position: relative;
  padding: 22px 20px 22px 24px;
  background: linear-gradient(122deg, var(--pc-dark-card), rgba(11, 24, 48, 0.76));
  border-left: 3px solid var(--lake);
  scroll-margin-top: 96px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-contact .collab-item:target {
  border-left-color: var(--sunset);
  background: linear-gradient(122deg, rgba(23, 120, 122, 0.32), rgba(11, 24, 48, 0.86));
}

.page-contact .collab-item__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--lake);
}

.page-contact .collab-item h3 {
  margin: 0 0 10px;
  font-size: 1.06rem;
  letter-spacing: -0.005em;
}

.page-contact .collab-item p {
  margin: 0 0 10px;
  font-size: 0.89rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .collab-item__fit {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--earth);
}

/* ---------- 咨询准备 ---------- */
.page-contact .prepare {
  padding-bottom: clamp(36px, 6vw, 62px);
}

.page-contact .prepare__grid {
  display: grid;
  gap: 28px;
}

.page-contact .prepare__main h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.38rem, 3.6vw, 2rem);
  line-height: 1.32;
  letter-spacing: -0.01em;
}

.page-contact .prepare__main > p {
  max-width: 54ch;
  margin: 0 0 26px;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--muted);
}

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

.page-contact .prepare__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.page-contact .prepare__list li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .prepare__list .mono {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--lake);
}

.page-contact .prepare__list h3 {
  margin: 0 0 6px;
  font-size: 0.97rem;
}

.page-contact .prepare__list p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.76;
  color: var(--muted);
}

.page-contact .prepare__aside {
  padding: 22px 20px;
  background: var(--sand);
  color: var(--pc-deep-text);
  border-top: 4px solid var(--sunset);
}

.page-contact .prepare__aside .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: #7a5a34;
}

.page-contact .prepare__asideList {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .prepare__asideList li {
  position: relative;
  padding-left: 16px;
  font-size: 0.87rem;
  line-height: 1.7;
}

.page-contact .prepare__asideList li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 2px;
  background: var(--lake-deep);
}

.page-contact .prepare__asideNote {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(20, 32, 58, 0.22);
  font-size: 0.84rem;
  line-height: 1.75;
}

.page-contact .prepare__asideNote a {
  color: var(--lake-deep);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .prepare__asideNote a:hover,
.page-contact .prepare__asideNote a:focus-visible {
  color: #b8562a;
}

/* ---------- 响应节奏 ---------- */
.page-contact .flow {
  padding-bottom: clamp(36px, 6vw, 62px);
}

.page-contact .flow h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.38rem, 3.6vw, 2rem);
  line-height: 1.32;
  letter-spacing: -0.01em;
}

.page-contact .flow__intro {
  max-width: 58ch;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .flow__track {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow__step {
  padding: 20px 18px 22px;
  background: rgba(16, 31, 60, 0.72);
  border-top: 2px solid var(--lake);
}

.page-contact .flow__step:nth-child(2) {
  border-top-color: var(--indigo);
}

.page-contact .flow__step:nth-child(3) {
  border-top-color: var(--sunset);
}

.page-contact .flow__step .mono {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--lake);
}

.page-contact .flow__step:nth-child(3) .mono {
  color: var(--sunset);
}

.page-contact .flow__step h3 {
  margin: 10px 0 8px;
  font-size: 1rem;
}

.page-contact .flow__step p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.76;
  color: var(--muted);
}

.page-contact .flow__when {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 9px;
  font-family: var(--font-mono);
  font-size: 0.69rem;
  letter-spacing: 0.1em;
  color: var(--night);
  background: var(--sand);
}

/* ---------- 常见问题 ---------- */
.page-contact .faq {
  padding-bottom: clamp(36px, 6vw, 62px);
}

.page-contact .faq__grid {
  display: grid;
  gap: 26px;
}

.page-contact .faq__lead h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.38rem, 3.6vw, 2rem);
  line-height: 1.32;
  letter-spacing: -0.01em;
}

.page-contact .faq__lead p {
  margin: 0;
  max-width: 34ch;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .faq__list {
  display: grid;
  gap: 10px;
}

.page-contact .faq details {
  border: 1px solid var(--line);
  background: rgba(16, 31, 60, 0.62);
}

.page-contact .faq details[open] {
  border-color: var(--line-strong);
  background: rgba(23, 120, 122, 0.15);
}

.page-contact .faq summary {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 0.94rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-contact .faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--lake);
}

.page-contact .faq details[open] summary::after {
  content: "\2013";
  color: var(--sunset);
}

.page-contact .faq summary:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: -2px;
}

.page-contact .faq details p {
  margin: 0;
  padding: 0 18px 18px;
  font-size: 0.87rem;
  line-height: 1.82;
  color: var(--mist);
}

.page-contact .faq details p a {
  color: var(--lake);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 备案与法律入口 ---------- */
.page-contact .site-strip {
  margin-top: 6px;
  padding: clamp(26px, 4vw, 40px) 0 clamp(34px, 5vw, 50px);
  border-top: 1px solid var(--line-strong);
  background: var(--night-3);
}

.page-contact .site-strip__grid {
  display: grid;
  gap: 22px;
}

.page-contact .site-strip__id .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--earth);
}

.page-contact .site-strip__icp {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 0.96rem;
  letter-spacing: 0.06em;
  color: var(--sand);
  font-variant-numeric: tabular-nums;
}

.page-contact .site-strip__id p:last-child {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.page-contact .site-strip__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .site-strip__links a {
  font-size: 0.85rem;
  color: var(--mist);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(201, 216, 232, 0.3);
  transition: color 0.15s ease, border-color 0.15s ease;
}

.page-contact .site-strip__links a:hover,
.page-contact .site-strip__links a:focus-visible {
  color: var(--lake);
  border-color: var(--lake);
}

.page-contact .site-strip__top {
  justify-self: start;
  display: inline-block;
  padding: 9px 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid var(--line-strong);
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.page-contact .site-strip__top:hover,
.page-contact .site-strip__top:focus-visible {
  color: var(--night);
  background: var(--sunset);
  border-color: var(--sunset);
}

/* ---------- 焦点可见性 ---------- */
.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: 2px;
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-contact .channel-grid {
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

  .page-contact .contact-meta {
    grid-template-columns: 1fr 1fr;
    gap: 10px 28px;
  }

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

  .page-contact .prepare__grid {
    grid-template-columns: 1.25fr 0.75fr;
    gap: 40px;
    align-items: start;
  }

  .page-contact .flow__track {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .page-contact .faq__grid {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 40px;
    align-items: start;
  }

  .page-contact .site-strip__grid {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: clamp(36px, 4vw, 60px);
  }

  .page-contact .contact-hero__media {
    aspect-ratio: 4 / 3;
    margin-top: 12px;
  }

  .page-contact .collab__head {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 44px;
  }

  .page-contact .collab__list {
    gap: 18px 22px;
  }

  .page-contact .collab-item {
    padding: 26px 24px 26px 28px;
  }

  .page-contact .prepare__grid {
    grid-template-columns: 1.4fr 0.6fr;
    gap: 56px;
  }

  .page-contact .prepare__aside {
    padding: 28px 26px;
    position: sticky;
    top: 92px;
  }

  .page-contact .site-strip__grid {
    grid-template-columns: 1fr auto auto;
    gap: 40px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .collab__tabs a,
  .page-contact .collab-item,
  .page-contact .site-strip__links a,
  .page-contact .site-strip__top {
    transition: none;
  }

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