.page-contact {
  --pc-line: 1px solid rgba(18, 50, 79, 0.14);
  --pc-soft: rgba(18, 50, 79, 0.06);
  background: var(--snow-50);
  color: var(--ink-900);
  font-family: var(--font-sans);
  font-size: var(--fs-17);
  line-height: 1.75;
}

.page-contact .breadcrumb {
  padding: 18px 0 0;
}

.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--fs-13);
  color: var(--slate);
}

.page-contact .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--blue-300);
}

.page-contact .breadcrumb a {
  color: var(--blue-600);
  text-decoration: none;
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--maple-dark);
  text-decoration: underline;
}

.page-contact .section {
  padding: clamp(36px, 5.5vw, 76px) 0;
}

.page-contact .eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-latin);
  font-size: var(--fs-13);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--maple);
}

.page-contact .eyebrow .mono {
  color: var(--maple);
  letter-spacing: 0.06em;
}

.page-contact .display {
  margin: 0 0 18px;
  font-size: var(--fs-56);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 16em;
}

.page-contact .lede {
  margin: 0;
  max-width: 34em;
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .section__title {
  margin: 0 0 12px;
  font-size: var(--fs-32);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.02em;
}

.page-contact .section__head {
  margin-bottom: clamp(24px, 3vw, 40px);
  padding-bottom: 18px;
  border-bottom: var(--pc-line);
}

.page-contact .prose {
  margin: 0;
  max-width: 44em;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(20px, 3vw, 34px);
}

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

.page-contact .contact-hero__text {
  min-width: 0;
}

.page-contact .media-frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: var(--pc-line);
  border-radius: var(--radius);
  background: var(--paper);
}

.page-contact .media-frame__inner {
  aspect-ratio: 4 / 3;
}

.page-contact .media-frame__media {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 渠道 ---------- */
.page-contact .channels__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2vw, 22px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .channel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--paper);
  border: var(--pc-line);
  border-top: 3px solid var(--blue-300);
  border-radius: var(--radius);
}

.page-contact .channel__icon {
  width: 30px;
  height: 30px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  color: var(--blue-600);
}

.page-contact .channel__name {
  margin: 0;
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-contact .channel__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-17);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
  color: var(--ink-800);
  overflow-wrap: anywhere;
}

.page-contact .channel__value a {
  color: var(--blue-600);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-contact .channel__value a:hover,
.page-contact .channel__value a:focus-visible {
  color: var(--maple-dark);
  text-decoration-color: var(--maple);
}

.page-contact .channel__scene {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .channel__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  padding-top: 6px;
}

.page-contact .channel--mail {
  background: var(--ink-900);
  border-color: var(--ink-800);
  border-top-color: var(--maple);
  color: var(--snow-50);
}

.page-contact .channel--mail .channel__name {
  color: var(--paper);
}

.page-contact .channel--mail .channel__value {
  color: var(--blue-300);
}

.page-contact .channel--mail .channel__icon {
  color: var(--maple);
}

.page-contact .channel--mail .channel__scene {
  color: rgba(244, 248, 251, 0.76);
}

.page-contact .channel--strip {
  border-top-color: var(--ink-800);
  background: var(--paper);
}

.page-contact .copy-btn {
  font-family: var(--font-sans);
  font-size: var(--fs-13);
  letter-spacing: 0.04em;
  padding: 8px 16px;
  border: 1px solid var(--blue-300);
  border-radius: var(--radius);
  background: transparent;
  color: var(--snow-50);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .copy-btn:hover {
  background: var(--blue-300);
  color: var(--ink-900);
}

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

.page-contact .copy-btn__feedback {
  font-size: var(--fs-13);
  color: var(--blue-300);
  min-height: 1em;
}

/* ---------- 四步流程 ---------- */
.page-contact .assist {
  background: var(--paper);
  border-top: var(--pc-line);
  border-bottom: var(--pc-line);
}

.page-contact .steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .steps__item {
  position: relative;
  min-width: 0;
  margin-left: 9px;
  padding: 0 0 26px 30px;
  border-left: 2px solid var(--mist);
}

.page-contact .steps__item::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--blue-600);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .steps__item:hover::before,
.page-contact .steps__item:focus-within::before {
  background: var(--maple);
  border-color: var(--maple);
}

.page-contact .steps__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .steps__no {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--maple-dark);
}

.page-contact .steps__name {
  margin: 0 0 6px;
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-contact .steps__item p {
  margin: 0;
  max-width: 30em;
  font-size: var(--fs-15);
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 大屏端入口 ---------- */
.page-contact .bigscreen__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-contact .bigscreen__text {
  min-width: 0;
}

.page-contact .bigscreen__text p {
  margin: 0 0 14px;
  max-width: 34em;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: var(--slate);
}

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

.page-contact .media-frame--strip {
  border-color: var(--ink-800);
  background: var(--ink-900);
}

.page-contact .media-frame--strip .media-frame__inner {
  aspect-ratio: 24 / 5;
}

/* ---------- 写作建议 ---------- */
.page-contact .writing {
  background: var(--snow-50);
}

.page-contact .writing__list {
  display: grid;
  gap: clamp(26px, 3.4vw, 40px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .writing__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  min-width: 0;
  padding-bottom: clamp(26px, 3.4vw, 40px);
  border-bottom: var(--pc-line);
}

.page-contact .writing__item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .writing__no {
  font-family: var(--font-mono);
  font-size: var(--fs-32);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--blue-300);
}

.page-contact .writing__name {
  margin: 0 0 8px;
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-contact .writing__item p {
  margin: 0;
  max-width: 40em;
  font-size: var(--fs-15);
  line-height: 1.9;
  color: var(--slate);
}

/* ---------- 收束提示 ---------- */
.page-contact .contact-more-wrap {
  padding: 0 0 clamp(36px, 5vw, 64px);
}

.page-contact .contact-more {
  max-width: 62ch;
  margin: 0;
  padding-top: 22px;
  border-top: var(--pc-line);
  font-size: var(--fs-15);
  line-height: 1.9;
  color: var(--slate);
}

.page-contact .contact-more a {
  color: var(--blue-600);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-contact .contact-more a:hover,
.page-contact .contact-more a:focus-visible {
  color: var(--maple-dark);
  text-decoration-color: var(--maple);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .channels__list {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }

  .page-contact .channel--strip {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-contact .channels__list {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 0.82fr);
  }

  .page-contact .channel--strip {
    grid-column: auto;
  }

  .page-contact .bigscreen__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

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

  .page-contact .steps__item {
    margin-left: 0;
    padding: 34px 26px 0 0;
    border-left: 0;
    border-top: 2px solid var(--mist);
  }

  .page-contact .steps__item:last-child {
    padding-bottom: 0;
    border-top-color: var(--mist);
    padding-right: 0;
  }

  .page-contact .steps__item::before {
    left: 0;
    top: -9px;
  }
}

@media (min-width: 1100px) {
  .page-contact .writing__list {
    gap: clamp(34px, 3vw, 48px);
  }

  .page-contact .writing__item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .copy-btn,
  .page-contact .steps__item::before {
    transition: none;
  }
}