.page-contact {
  --contact-gap: clamp(72px, 11vw, 168px);
  padding-top: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(72px, 9vw, 128px);
}

/* 首屏 */
.page-contact .contact-hero {
  padding-bottom: clamp(36px, 6vw, 72px);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-contact .contact-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(38px, 8.2vw, 104px);
  font-weight: 200;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .contact-hero h1 strong {
  font-weight: 700;
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  margin: clamp(20px, 3vw, 32px) 0 0;
  max-width: 34em;
  font-size: clamp(16px, 1.9vw, 19px);
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .contact-hero__meta {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* 三条通道 */
.page-contact .lanes {
  margin-top: var(--contact-gap);
}

.page-contact .lanes__head {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-contact .lanes__title {
  margin: 0;
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .lanes__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .lanes__figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

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

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

.page-contact .lane {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  column-gap: 14px;
  padding: clamp(26px, 4vw, 44px) 0;
  border-top: 1px solid var(--line);
}

.page-contact .lane__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--violet);
  padding-top: 4px;
}

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

.page-contact .lane__name {
  margin: 0;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-contact .lane__value {
  display: inline-block;
  max-width: 100%;
  margin: 12px 0 0;
  padding-bottom: 8px;
  font-size: clamp(15px, 4.5vw, 50px);
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--paper);
  border-bottom: 2px solid var(--signal);
  word-break: break-all;
  overflow-wrap: anywhere;
}

.page-contact .lane__value--mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  -webkit-user-select: all;
  user-select: all;
}

.page-contact .lane__value--text {
  font-size: clamp(19px, 3.2vw, 34px);
  font-weight: 300;
  letter-spacing: 0.01em;
}

.page-contact .lane__use {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .lane__tag {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-contact .lane--place {
  grid-template-columns: 36px minmax(0, 1fr);
}

.page-contact .lane--place .lane__figure {
  grid-column: 2;
  margin: 22px 0 0;
}

/* 数据纠错 */
.page-contact .correction {
  margin-top: var(--contact-gap);
  padding: clamp(30px, 5vw, 64px) clamp(20px, 4vw, 56px);
  background: var(--ink-800);
  border-top: 3px solid var(--alert);
  border-bottom: 1px solid var(--line);
}

.page-contact .correction h2 {
  margin: 12px 0 0;
  font-size: clamp(24px, 3.4vw, 40px);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .correction__lede {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .checklist {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .mat {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  grid-template-areas:
    "box name"
    "box desc";
  gap: 6px 14px;
  padding: 18px 16px;
  border: 1px solid var(--line);
  background: var(--ink-900);
  cursor: pointer;
  transition: border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-contact .mat:hover {
  border-color: #3d4447;
}

.page-contact .mat__box {
  grid-area: box;
  align-self: start;
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid #4a5155;
  background: transparent;
  cursor: pointer;
  transition: background 140ms var(--ease), border-color 140ms var(--ease);
}

.page-contact .mat__box:checked {
  border-color: var(--signal);
  background: var(--signal);
  box-shadow: inset 0 0 0 3px var(--ink-900);
}

.page-contact .mat__box:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-contact .mat:has(.mat__box:checked) {
  border-color: var(--signal);
}

.page-contact .mat__name {
  grid-area: name;
  font-size: 15px;
  font-weight: 500;
  color: var(--paper);
  line-height: 1.5;
}

.page-contact .mat__idx {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--violet);
  vertical-align: 1px;
}

.page-contact .mat__desc {
  grid-area: desc;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .mat-hint {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--muted);
  word-break: break-all;
}

.page-contact .mat-hint__ready {
  display: none;
  color: var(--signal);
}

.page-contact .checklist:has(#mat-1:checked):has(#mat-2:checked):has(#mat-3:checked):has(#mat-4:checked) + .mat-hint .mat-hint__idle {
  display: none;
}

.page-contact .checklist:has(#mat-1:checked):has(#mat-2:checked):has(#mat-3:checked):has(#mat-4:checked) + .mat-hint .mat-hint__ready {
  display: inline;
}

.page-contact .correction__flow {
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  max-width: 40em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

/* 回复时间 */
.page-contact .hours {
  margin-top: var(--contact-gap);
}

.page-contact .hours h2 {
  margin: 0 0 clamp(24px, 4vw, 40px);
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .hours__grid {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
}

.page-contact .hours__rail {
  position: relative;
  height: 2px;
  background: var(--signal);
  margin: 6px 4px 0;
}

.page-contact .hours__node {
  position: absolute;
  top: 50%;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--signal);
  transform: translate(-50%, -50%);
}

.page-contact .hours__node--start {
  left: 0;
}

.page-contact .hours__node--end {
  left: 100%;
}

.page-contact .hours__labels {
  display: flex;
  justify-content: space-between;
  margin-top: 16px;
}

.page-contact .hours__label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-contact .hours__label--end {
  align-items: flex-end;
  text-align: right;
}

.page-contact .hours__label strong {
  font-size: 16px;
  font-weight: 500;
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-contact .hours__status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 26px 0 0;
  padding: 6px 12px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--signal);
}

.page-contact .hours__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px rgba(43, 255, 140, 0.14);
}

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

.page-contact .hours__list li {
  position: relative;
  padding: 16px 0 16px 20px;
  border-top: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .hours__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 25px;
  width: 9px;
  height: 1px;
  background: var(--amber);
}

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

/* 合作与引用 */
.page-contact .partner {
  margin-top: var(--contact-gap);
}

.page-contact .partner h2 {
  margin: 0;
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .partner__lede {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .partner__grid {
  display: grid;
  gap: 0;
  margin-top: clamp(24px, 4vw, 40px);
  border-top: 1px solid var(--line);
}

.page-contact .co {
  padding: clamp(20px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .co__name {
  margin: 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--paper);
}

.page-contact .co__desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .co__req {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.75;
  letter-spacing: 0.03em;
  color: var(--muted);
}

.page-contact .partner__more {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .partner__more a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 255, 140, 0.35);
}

.page-contact .partner__more a:hover,
.page-contact .partner__more a:focus-visible {
  border-bottom-color: var(--signal);
}

/* 来信之前 */
.page-contact .precheck {
  margin-top: var(--contact-gap);
}

.page-contact .precheck h2 {
  margin: 0;
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .precheck__lede {
  margin: 16px 0 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .precheck__list {
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .precheck__row {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  grid-template-areas:
    "num link"
    "num hint";
  gap: 6px 12px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .precheck__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--violet);
  padding-top: 4px;
}

.page-contact .precheck__link {
  grid-area: link;
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms var(--ease);
}

.page-contact .precheck__link:hover,
.page-contact .precheck__link:focus-visible {
  border-bottom-color: var(--signal);
}

.page-contact .precheck__hint {
  grid-area: hint;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.07em;
  color: var(--muted);
}

.page-contact .precheck__foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

@media (min-width: 640px) {
  .page-contact .checklist {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
}

@media (min-width: 760px) {
  .page-contact .lanes__head {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
    gap: 48px;
  }

  .page-contact .lanes__note {
    max-width: 22em;
    text-align: right;
  }

  .page-contact .lane {
    grid-template-columns: 64px minmax(0, 1fr);
    column-gap: 28px;
  }

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

  .page-contact .precheck__row {
    grid-template-columns: 52px minmax(0, 1fr) minmax(0, 0.55fr);
    grid-template-areas: "num link hint";
    align-items: baseline;
    gap: 24px;
    padding: 20px 0;
  }

  .page-contact .precheck__hint {
    text-align: right;
  }

  .page-contact .precheck__link {
    font-size: 17px;
  }
}

@media (min-width: 860px) {
  .page-contact .hours__grid {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    align-items: start;
  }

  .page-contact .hours__axis {
    padding-top: 4px;
  }

  .page-contact .partner__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: 36px;
    border-bottom: 1px solid var(--line);
  }

  .page-contact .co {
    border-bottom: 0;
  }
}

@media (min-width: 1000px) {
  .page-contact .lane {
    grid-template-columns: 88px minmax(0, 1fr);
    column-gap: 40px;
  }

  .page-contact .lane--place {
    grid-template-columns: 88px minmax(0, 1fr) minmax(0, 0.82fr);
    column-gap: 40px;
    align-items: start;
  }

  .page-contact .lane--place .lane__figure {
    grid-column: 3;
    grid-row: 1;
    margin: 0;
  }

  .page-contact .lane__use {
    font-size: 16px;
  }

  .page-contact .correction {
    padding-left: clamp(40px, 5vw, 72px);
    padding-right: clamp(40px, 5vw, 72px);
  }
}