.page-contact {
  --pc-gap-split: clamp(28px, 4vw, 76px);
  --pc-gap-block: clamp(48px, 6vw, 84px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(24px, 4vw, 54px) 0 0;
  isolation: isolate;
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: -28% -18% auto -18%;
  height: 118%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(48% 62% at 16% 28%, rgba(43, 227, 208, 0.13), transparent 68%),
    radial-gradient(44% 56% at 88% 2%, rgba(224, 68, 124, 0.11), transparent 70%);
}

.page-contact .contact-hero > * {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: clamp(18px, 2.4vw, 28px);
}

.page-contact .contact-hero__title {
  margin: 0 0 clamp(16px, 2.2vw, 26px);
  max-width: 20ch;
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: 46em;
  color: #C6D6E2;
}

.page-contact .contact-jump {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.page-contact .contact-jump__link {
  position: relative;
  display: inline-block;
  padding-bottom: 4px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: color var(--t) var(--ease);
}

.page-contact .contact-jump__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--neon);
  transition: right var(--t) var(--ease);
}

.page-contact .contact-jump__link:hover {
  color: var(--neon-soft);
}

.page-contact .contact-jump__link:hover::after {
  right: 0;
}

.page-contact .contact-hero__media-wrap {
  margin-top: clamp(30px, 4.5vw, 56px);
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(233, 240, 246, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(233, 240, 246, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* ---------- 横向信息带 ---------- */
.page-contact .contact-rail-section {
  padding: clamp(30px, 4vw, 48px) 0 clamp(26px, 3.4vw, 40px);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-rail-section__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.page-contact .rail__nav {
  display: flex;
  gap: 8px;
}

.page-contact .rail__btn {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: none;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease), background var(--t) var(--ease);
}

.page-contact .rail__btn:hover {
  color: var(--neon);
  border-color: var(--neon);
  background: rgba(43, 227, 208, 0.06);
}

.page-contact .contact-rail {
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}

.page-contact .contact-rail .rail__track {
  display: flex;
  gap: 10px;
  width: max-content;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow: visible;
}

.page-contact .contact-rail .rail__item {
  flex: 0 0 auto;
  scroll-snap-align: start;
  padding: 9px 16px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.05em;
  white-space: nowrap;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-contact .contact-rail .rail__item:hover {
  color: var(--text);
  border-color: var(--neon);
}

/* ---------- 分屏主体 ---------- */
.page-contact .contact-layout {
  background-image: linear-gradient(180deg, rgba(12, 34, 51, 0.55), rgba(6, 18, 31, 0) 34%);
}

.page-contact .contact-layout__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap-block);
  padding-top: clamp(40px, 6vw, 88px);
  padding-bottom: clamp(48px, 7vw, 108px);
}

.page-contact .contact-block {
  margin-bottom: clamp(48px, 6vw, 84px);
}

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

.page-contact .contact-block .section-head {
  margin-bottom: clamp(18px, 2.4vw, 28px);
}

.page-contact .contact-block .section-head h2 {
  margin: 0;
}

/* ---------- 渠道条目 ---------- */
.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .channel {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 6px 18px;
  padding: clamp(22px, 2.9vw, 34px) 2px;
  border-top: 1px solid var(--line);
  transition: background var(--t) var(--ease);
}

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

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--neon);
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform var(--t) var(--ease);
}

.page-contact .channel:hover::before,
.page-contact .channel:focus-within::before {
  transform: scaleY(1);
}

.page-contact .channel:hover {
  background: linear-gradient(90deg, rgba(43, 227, 208, 0.05), rgba(43, 227, 208, 0) 72%);
}

.page-contact .channel__index {
  padding-top: 5px;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-contact .channel__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-contact .channel__value {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: clamp(14px, 1.7vw, 17px);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--neon-soft);
  word-break: break-word;
}

.page-contact .channel__desc {
  margin: 0 0 14px;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .channel__cta {
  font-size: 13.5px;
}

/* ---------- 事实列表 ---------- */
.page-contact .contact-facts {
  margin: 0;
  padding: 0;
}

.page-contact .contact-fact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

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

.page-contact .contact-fact dt {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
}

.page-contact .contact-fact dd {
  margin: 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 渠道边界 ---------- */
.page-contact .scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .scope-col {
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.page-contact .scope-col--in {
  border-top: 2px solid var(--neon);
}

.page-contact .scope-col--out {
  border-top: 2px solid var(--magenta);
}

.page-contact .scope-col h3 {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text);
}

.page-contact .scope-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}

.page-contact .scope-col li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .scope-col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--line);
}

.page-contact .scope-col--in li::before {
  background: var(--neon);
}

.page-contact .scope-col--out li::before {
  background: var(--magenta);
}

.page-contact .scope-tail {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 站点信息印刷标签 ---------- */
.page-contact .stamp {
  position: relative;
  padding: clamp(22px, 3vw, 36px);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(12, 34, 51, 0.92), rgba(6, 18, 31, 0.92));
}

.page-contact .stamp::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px solid rgba(28, 58, 82, 0.75);
  pointer-events: none;
}

.page-contact .stamp__label {
  margin: 0 0 20px;
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--amber);
}

.page-contact .stamp__list {
  margin: 0;
  padding: 0;
}

.page-contact .stamp__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 5px;
  padding: 13px 0;
  border-top: 1px dashed rgba(28, 58, 82, 0.9);
}

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

.page-contact .stamp__row dt {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-contact .stamp__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  word-break: break-word;
}

.page-contact .stamp__mono {
  font-family: var(--font-num);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-contact .stamp__mono--amber {
  color: var(--amber);
}

.page-contact .stamp__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed rgba(28, 58, 82, 0.9);
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 提交清单（侧栏） ---------- */
.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 2.4em minmax(0, 1fr);
  gap: 4px 12px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

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

.page-contact .checklist__num {
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.5;
  color: var(--amber);
}

.page-contact .checklist__title {
  margin: 0 0 4px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-contact .checklist__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .contact-path-note {
  margin: 18px 0 0;
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-contact .contact-path-note .num {
  font-weight: 700;
  color: var(--neon-soft);
}

.page-contact .contact-aside-media {
  margin: clamp(24px, 3vw, 34px) 0 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
}

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

/* ---------- 中屏与桌面 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-fact {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 6px 26px;
  }

  .page-contact .scope-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-contact .stamp__row {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 4px 20px;
    align-items: baseline;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-layout__inner {
    grid-template-columns: 7fr 5fr;
    gap: 0;
    align-items: start;
  }

  .page-contact .contact-col--primary {
    grid-column: 1;
    grid-row: 1;
    padding-right: var(--pc-gap-split);
  }

  .page-contact .contact-col--aside {
    grid-column: 2;
    grid-row: 1;
    align-self: start;
    padding-left: var(--pc-gap-split);
    border-left: 1px solid var(--line);
  }

  .page-contact .contact-block--aside:last-of-type {
    margin-bottom: 0;
  }
}

@media (min-width: 1000px) and (min-height: 780px) {
  .page-contact .contact-col--aside {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }
}

@media (max-width: 520px) {
  .page-contact .contact-rail-section__head {
    flex-wrap: wrap;
  }

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

  .page-contact .channel__index {
    padding-top: 0;
  }
}