.page-contact {
  --contact-panel: rgba(19, 28, 68, .72);
  --contact-panel-soft: rgba(19, 28, 68, .44);
  --contact-pad: clamp(20px, 4vw, 30px);
  background: var(--c-deep);
  color: var(--c-text);
}

/* ---------- 首屏：斜向通栏 + 通道条 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(28px, 5vw, 48px) clamp(56px, 8vw, 104px);
  background: var(--c-deep);
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .contact-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .42;
  filter: saturate(.9) contrast(1.05);
}

.page-contact .contact-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(155deg, rgba(47, 240, 208, .16) 0%, rgba(10, 16, 48, .72) 38%, rgba(10, 16, 48, 0) 62%),
    linear-gradient(180deg, rgba(5, 10, 30, .72) 0%, rgba(10, 16, 48, .9) 58%, var(--c-deep) 94%);
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumb {
  margin-bottom: clamp(28px, 5vw, 56px);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--c-muted);
}

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

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--c-text);
}

.page-contact .contact-hero__tag {
  margin-bottom: 14px;
}

.page-contact .contact-hero__title {
  max-width: 20ch;
  margin-bottom: 18px;
}

.page-contact .contact-hero__lead {
  max-width: 46ch;
  color: var(--c-text);
  opacity: .92;
}

.page-contact .contact-channels {
  display: grid;
  gap: 14px;
  margin-top: clamp(30px, 5vw, 54px);
}

.page-contact .channel {
  position: relative;
  padding: var(--contact-pad);
  border: 1px solid var(--c-line-soft);
  border-top: 2px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--contact-panel);
  box-shadow: 0 10px 30px rgba(5, 10, 30, .35);
  transition: border-color .2s var(--ease), transform .2s var(--ease), background-color .2s var(--ease);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  transform: translateY(-3px);
  border-color: var(--c-line);
}

.page-contact .channel--mail {
  border-top-color: var(--c-cyan);
  background:
    linear-gradient(158deg, rgba(47, 240, 208, .12) 0%, rgba(19, 28, 68, .82) 46%),
    var(--contact-panel);
}

.page-contact .channel--mail:hover,
.page-contact .channel--mail:focus-within {
  border-color: var(--c-cyan);
}

.page-contact .channel--phone {
  border-top-color: var(--c-orange);
}

.page-contact .channel--phone:hover,
.page-contact .channel--phone:focus-within {
  border-color: var(--c-orange);
}

.page-contact .channel--self {
  border-top-color: var(--c-violet);
}

.page-contact .channel--self:hover,
.page-contact .channel--self:focus-within {
  border-color: var(--c-violet);
}

.page-contact .channel__index {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-muted);
}

.page-contact .channel__title {
  margin: 0 0 12px;
  font-size: clamp(18px, 2.6vw, 22px);
  font-weight: 900;
  letter-spacing: -.01em;
}

.page-contact .channel__value {
  margin: 0 0 14px;
  font-size: clamp(16px, 2.8vw, 21px);
  line-height: 1.5;
  color: var(--c-text);
  word-break: break-all;
}

.page-contact .channel--mail .channel__value {
  color: var(--c-cyan);
}

.page-contact .channel__value a {
  text-decoration: none;
}

.page-contact .channel__desc {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-muted);
}

.page-contact .channel__meta {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--c-line-soft);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-muted);
}

/* ---------- 咨询准备：单栏清单 ---------- */
.page-contact .contact-prep {
  background: var(--c-cabin);
  padding-block: clamp(56px, 8vw, 96px);
}

.page-contact .contact-prep__head {
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-contact .contact-prep__head .prose {
  margin-top: 14px;
  max-width: 42em;
}

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

.page-contact .prep-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--c-line-soft);
}

.page-contact .prep-list__item:last-child {
  border-bottom: 1px solid var(--c-line-soft);
}

.page-contact .prep-list__num {
  padding-top: 5px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-cyan);
}

.page-contact .prep-list__item h3 {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.4vw, 20px);
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-contact .prep-list__item p {
  grid-column: 2;
  margin: 0;
  font-size: 15px;
  line-height: 1.88;
  color: var(--c-muted);
}

/* ---------- 响应节奏 ---------- */
.page-contact .contact-rhythm {
  background: var(--c-deep);
  padding-block: clamp(56px, 8vw, 104px);
}

.page-contact .contact-rhythm__text .prose {
  max-width: 40em;
  margin-top: 16px;
}

.page-contact .contact-rhythm__media {
  margin-top: 32px;
}

.page-contact .axis {
  margin-top: clamp(26px, 4vw, 40px);
  padding: 20px 16px 16px;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
  background: var(--contact-panel-soft);
}

.page-contact .axis__track {
  position: relative;
  height: 2px;
  background: linear-gradient(90deg, var(--c-orange) 0%, var(--c-cyan) 22%, var(--c-cyan) 78%, var(--c-orange) 100%);
}

.page-contact .axis__dot {
  position: absolute;
  top: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 0 4px rgba(47, 240, 208, .16);
  transform: translate(-50%, -50%);
}

.page-contact .axis__dot--start {
  left: 0;
  background: var(--c-orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 46, .22);
}

.page-contact .axis__dot--mid {
  left: 50%;
}

.page-contact .axis__dot--end {
  left: 100%;
  background: var(--c-orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 46, .22);
}

.page-contact .axis__labels {
  display: flex;
  justify-content: space-between;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  color: var(--c-muted);
}

.page-contact .axis__note {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--c-muted);
}

.page-contact .priority {
  list-style: none;
  margin: clamp(34px, 5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .priority__item {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 14px;
  padding: 4px 0 4px 16px;
  border-left: 2px solid var(--c-line);
}

.page-contact .priority__item--urgent {
  border-left-color: var(--c-orange);
}

.page-contact .priority__item--normal {
  border-left-color: var(--c-cyan);
}

.page-contact .priority__item--coop {
  border-left-color: var(--c-violet);
}

.page-contact .priority__num {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-muted);
}

.page-contact .priority__item h3 {
  margin: 0 0 6px;
  font-size: clamp(16px, 2.2vw, 19px);
}

.page-contact .priority__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-muted);
}

/* ---------- 合作方向 ---------- */
.page-contact .contact-partner {
  background: var(--c-cabin);
  padding-block: clamp(56px, 8vw, 96px);
}

.page-contact .contact-partner__head .prose {
  margin-top: 16px;
  max-width: 46em;
}

.page-contact .partner-rows {
  margin-top: clamp(26px, 4vw, 42px);
  border-top: 1px solid var(--c-line-soft);
}

.page-contact .partner-row {
  border-bottom: 1px solid var(--c-line-soft);
}

.page-contact .partner-row summary {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 6px 14px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .partner-row__idx {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-muted);
}

.page-contact .partner-row__name {
  font-size: clamp(17px, 2.6vw, 22px);
  font-weight: 900;
  letter-spacing: -.01em;
  transition: color .2s var(--ease);
}

.page-contact .partner-row__hint {
  grid-column: 2;
  font-size: 12px;
  color: var(--c-muted);
}

.page-contact .partner-row summary:hover .partner-row__name,
.page-contact .partner-row summary:focus-visible .partner-row__name,
.page-contact .partner-row[open] .partner-row__name {
  color: var(--c-cyan);
}

.page-contact .partner-row__body {
  padding: 0 2px 22px;
}

.page-contact .partner-row__body p {
  margin: 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-muted);
}

/* ---------- 来访信息 ---------- */
.page-contact .contact-visit {
  background: var(--c-night);
  padding-block: clamp(56px, 8vw, 96px);
}

.page-contact .contact-visit__side {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--c-line-soft);
}

.page-contact .address-block {
  margin-top: 20px;
  padding: 6px var(--contact-pad) 10px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(19, 28, 68, .72), rgba(5, 10, 30, .5));
}

.page-contact .address-row {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px dashed var(--c-line-soft);
}

.page-contact .address-row:first-child {
  border-top: 0;
}

.page-contact .address-row__key {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--c-muted);
}

.page-contact .address-row__value {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text);
}

.page-contact .contact-visit__note {
  margin-top: 18px;
  max-width: 42em;
}

.page-contact .visit-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  font-size: 15px;
}

.page-contact .contact-visit__legal {
  margin: 22px 0 0;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-muted);
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-contact .contact-channels {
    grid-template-columns: 1.5fr 1fr;
  }

  .page-contact .channel--mail {
    grid-row: span 2;
  }

  .page-contact .partner-row summary {
    grid-template-columns: auto 1fr auto;
    padding: 22px 2px;
  }

  .page-contact .partner-row__idx {
    align-self: center;
  }

  .page-contact .partner-row__hint {
    grid-column: 3;
    align-self: center;
    font-size: 13px;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-channels {
    grid-template-columns: 1.55fr 1fr .88fr;
    gap: 18px;
  }

  .page-contact .channel--mail {
    grid-row: auto;
  }

  .page-contact .contact-prep__body {
    display: grid;
    grid-template-columns: 4fr 8fr;
    column-gap: clamp(32px, 5vw, 72px);
  }

  .page-contact .contact-prep__head {
    margin-bottom: 0;
  }

  .page-contact .prep-list {
    margin-top: -22px;
  }

  .page-contact .contact-rhythm__body {
    display: grid;
    grid-template-columns: 6fr 5fr;
    column-gap: clamp(32px, 5vw, 76px);
    align-items: start;
  }

  .page-contact .contact-rhythm__media {
    margin-top: 0;
  }

  .page-contact .priority {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-contact .contact-visit__body {
    display: grid;
    grid-template-columns: 7fr 4fr;
    column-gap: clamp(32px, 5vw, 76px);
    align-items: start;
  }

  .page-contact .contact-visit__side {
    margin-top: 0;
    padding-top: 0;
    padding-left: clamp(24px, 3vw, 40px);
    border-top: 0;
    border-left: 1px solid var(--c-line-soft);
    min-height: 100%;
  }
}