.page-contact {
  --pc-gap: 72px;
  padding-bottom: 96px;
}

.page-contact .contact-intro {
  padding-top: clamp(40px, 6vw, 72px);
}

.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-contact .crumbs a {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

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

.page-contact .contact-intro .eyebrow {
  display: block;
  margin-bottom: 14px;
}

.page-contact h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(34px, 6.2vw, 68px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: .01em;
  color: var(--white);
}

.page-contact .contact-intro__lead {
  max-width: 44em;
  margin: 0;
  font-size: 17px;
  line-height: 1.78;
  color: var(--silver);
}

.page-contact .contact-hero-media {
  margin: 36px 0 0;
  border: 2px solid var(--line);
  box-shadow: var(--shadow);
  background: var(--ink-900);
  overflow: hidden;
}

.page-contact .contact-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.85) brightness(.82);
}

.page-contact .contact-board {
  margin-top: var(--pc-gap);
}

.page-contact .board-head {
  border-top: 2px solid var(--line);
  padding-top: 26px;
  margin-bottom: 34px;
}

.page-contact .board-num {
  position: static;
  inset: auto;
  display: block;
  margin: 0 0 12px;
  padding: 0;
  font-family: var(--font-display);
  font-size: clamp(40px, 5.6vw, 64px);
  font-weight: 700;
  line-height: .9;
  letter-spacing: .02em;
  color: var(--silver);
  transition: color .32s var(--ease);
}

.page-contact .board-num.is-in {
  color: var(--green);
}

.page-contact .board-head h2 {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 900;
  line-height: 1.18;
  color: var(--white);
}

.page-contact .board-head__lead {
  max-width: 46em;
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--silver);
}

.page-contact .board-head__lead a,
.page-contact .qa__body a,
.page-contact .write-in__note a,
.page-contact .contact-panel__foot a {
  color: var(--white);
  text-decoration: none;
  border-bottom: 2px solid var(--green-dim);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .board-head__lead a:hover,
.page-contact .qa__body a:hover,
.page-contact .write-in__note a:hover,
.page-contact .contact-panel__foot a:hover,
.page-contact .board-head__lead a:focus-visible,
.page-contact .qa__body a:focus-visible,
.page-contact .write-in__note a:focus-visible,
.page-contact .contact-panel__foot a:focus-visible {
  color: var(--green);
  border-bottom-color: var(--green);
}

.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

/* ---------- 01 合作方向 ---------- */

.page-contact .dir-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-contact .dir-card {
  display: flex;
  flex-direction: column;
  padding: 26px 22px 24px;
  background: var(--ink-800);
  border: 2px solid var(--line);
  border-top-width: 4px;
  box-shadow: var(--shadow);
  transition: transform .32s var(--ease), box-shadow .32s var(--ease);
}

.page-contact .dir-card--data { border-top-color: var(--green); }
.page-contact .dir-card--content { border-top-color: var(--orange); }
.page-contact .dir-card--channel { border-top-color: var(--blue); }

.page-contact .dir-card__code {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--silver);
}

.page-contact .dir-card h3 {
  margin: 0 0 14px;
  font-size: 25px;
  font-weight: 900;
  line-height: 1.15;
  color: var(--white);
}

.page-contact .dir-card__desc {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}

.page-contact .dir-card__list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .dir-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--white);
}

.page-contact .dir-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 9px;
  height: 2px;
  background: var(--silver);
}

.page-contact .dir-card--data .dir-card__list li::before { background: var(--green); }
.page-contact .dir-card--content .dir-card__list li::before { background: var(--orange); }
.page-contact .dir-card--channel .dir-card__list li::before { background: var(--blue); }

.page-contact .dir-card__who {
  margin: auto 0 0;
  padding-top: 16px;
  border-top: 2px dashed var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--silver);
}

/* ---------- 02 合作流程 ---------- */

.page-contact .flow-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
}

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

.page-contact .flow-step {
  position: relative;
  padding: 0 0 34px 74px;
}

.page-contact .flow-step:last-child {
  padding-bottom: 0;
}

.page-contact .flow-step::before {
  content: "";
  position: absolute;
  left: 39px;
  top: 8px;
  width: 14px;
  height: 14px;
  background: var(--ink-900);
  border: 2px solid var(--green);
  z-index: 1;
}

.page-contact .flow-step::after {
  content: "";
  position: absolute;
  left: 47px;
  top: 26px;
  bottom: 0;
  width: 2px;
  background: var(--line);
}

.page-contact .flow-step:last-child::after {
  display: none;
}

.page-contact .flow-step__num {
  position: absolute;
  left: 0;
  top: 2px;
  width: 30px;
  text-align: right;
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--white);
}

.page-contact .flow-step h3 {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 900;
  line-height: 1.3;
  color: var(--white);
}

.page-contact .flow-step p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

.page-contact .flow-step__time {
  display: inline-block;
  padding: 5px 11px;
  border: 2px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--orange);
}

.page-contact .flow-figure {
  margin: 0;
  background: var(--ink-900);
  border: 2px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.page-contact .flow-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.8) brightness(.85);
}

.page-contact .flow-figure figcaption {
  padding: 12px 16px;
  border-top: 2px solid var(--line);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--silver);
}

/* ---------- 03 常见疑问 ---------- */

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

.page-contact .qa {
  background: var(--ink-800);
  border: 2px solid var(--line);
  border-left: 4px solid var(--line);
  transition: border-left-color .28s var(--ease);
}

.page-contact .qa[open] {
  border-left-color: var(--green);
}

.page-contact .qa summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 44px;
  padding: 17px 20px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

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

.page-contact .qa summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  color: var(--green);
}

.page-contact .qa[open] summary::after {
  content: "–";
}

.page-contact .qa__body {
  padding: 0 20px 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}

/* ---------- 04 来信清单 ---------- */

.page-contact .write-in {
  padding: 26px 22px;
}

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

.page-contact .write-in__list li {
  display: grid;
  gap: 6px;
  padding: 15px 0;
  border-bottom: 2px solid var(--line);
}

.page-contact .write-in__list li:first-child {
  padding-top: 0;
}

.page-contact .write-in__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .write-in__list strong {
  font-size: 15px;
  font-weight: 900;
  color: var(--white);
}

.page-contact .write-in__list span {
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

.page-contact .write-in__note {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 2px dashed var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 05 联系渠道 ---------- */

.page-contact .contact-panel {
  padding: 30px 22px 26px;
  background: var(--ink-800);
  border: 2px solid var(--line);
  border-left: 4px solid var(--green);
  box-shadow: var(--shadow-lift);
}

.page-contact .contact-panel__kicker {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--green);
}

.page-contact .contact-panel__head h3 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 900;
  line-height: 1.2;
  color: var(--white);
}

.page-contact .contact-panel__head p {
  max-width: 44em;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}

.page-contact .reach-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 30px;
  padding-top: 26px;
  border-top: 2px solid var(--line);
}

.page-contact .reach-item {
  padding: 18px 16px;
  background: var(--ink-700);
  border: 2px solid var(--line);
}

.page-contact .reach-item__key {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-contact .reach-item__val {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
  overflow-wrap: anywhere;
  -webkit-user-select: all;
  user-select: all;
}

.page-contact .reach-item__val.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.page-contact .reach-item__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--silver);
}

.page-contact .contact-panel__foot {
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: 2px dashed var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 断点 ---------- */

@media (min-width: 760px) {
  .page-contact .dir-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .write-in {
    padding: 32px 30px;
  }

  .page-contact .write-in__list li {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
  }

  .page-contact .reach-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-panel {
    padding: 38px 34px 32px;
  }
}

@media (min-width: 980px) {
  .page-contact .flow-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 52px;
    align-items: start;
  }

  .page-contact .flow-figure {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (hover: hover) and (pointer: fine) {
  .page-contact .dir-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lift);
  }

  .page-contact .qa:hover {
    border-left-color: var(--green-dim);
  }
}

@media (max-width: 480px) {
  .page-contact {
    --pc-gap: 56px;
    padding-bottom: 72px;
  }

  .page-contact .flow-step {
    padding-left: 58px;
  }

  .page-contact .flow-step::before {
    left: 29px;
  }

  .page-contact .flow-step::after {
    left: 37px;
  }

  .page-contact .flow-step__num {
    width: 22px;
    font-size: 20px;
  }

  .page-contact .dir-card {
    padding: 22px 18px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .dir-card,
  .page-contact .qa,
  .page-contact .board-num {
    transition: none;
  }

  .page-contact .dir-card:hover {
    transform: none;
  }
}