.page-contact {
  --pc-radius: 3px;
  --pc-card-pad: clamp(20px, 3vw, 28px);
  background: var(--ink);
  color: var(--bone);
  overflow-x: clip;
}

/* ---------- 页首 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(64px, 11vw, 132px) 0 clamp(48px, 8vw, 92px);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-contact .contact-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .34;
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 78% 12%, rgba(200, 150, 30, .18), transparent 58%),
    linear-gradient(180deg, rgba(10, 11, 15, .58) 0%, rgba(10, 11, 15, .88) 58%, var(--ink) 100%);
}

.page-contact .contact-hero__inner {
  position: relative;
}

.page-contact .contact-hero__eyebrow {
  margin: clamp(26px, 5vw, 44px) 0 0;
  font-size: 13px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .contact-hero__eyebrow .num {
  margin-right: 10px;
  padding: 2px 8px;
  border: 1px solid var(--gold);
  border-radius: var(--pc-radius);
  font-size: 12px;
}

.page-contact .contact-hero__title {
  margin: 16px 0 0;
  font-size: clamp(40px, 9vw, 92px);
  line-height: 1.02;
  letter-spacing: -.025em;
  font-weight: 800;
  font-style: italic;
  color: var(--bone);
  max-width: 12em;
}

.page-contact .contact-hero__title .hl {
  color: var(--gold-lit);
}

.page-contact .contact-hero__lead {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .contact-hero__chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding: 0;
}

.page-contact .contact-hero__chips li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--bone);
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(20, 22, 29, .72);
}

.page-contact .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex: none;
}

.page-contact .dot--gold { background: var(--gold-lit); }
.page-contact .dot--cyan { background: var(--cyan); }
.page-contact .dot--red { background: var(--red); }

/* ---------- 主体分屏 ---------- */
.page-contact .contact-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 54px);
  align-items: start;
}

.page-contact .contact-head {
  margin: 0 0 clamp(22px, 3vw, 30px);
}

.page-contact .contact-head h2 {
  margin: 0 0 10px;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.2;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--bone);
}

.page-contact .contact-head p {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .contact-head--wide {
  margin-bottom: clamp(24px, 3.4vw, 36px);
}

.page-contact .contact-head--wide p {
  max-width: 68ch;
}

/* ---------- 联系卡 ---------- */
.page-contact .contact-cards {
  display: grid;
  gap: 14px;
}

.page-contact .ccard {
  --accent: var(--gold);
  position: relative;
  padding: var(--pc-card-pad);
  padding-left: calc(var(--pc-card-pad) + 14px);
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
  background: var(--panel);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-contact .ccard::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: var(--line);
  transition: background 200ms var(--ease), top 200ms var(--ease), bottom 200ms var(--ease);
}

.page-contact .ccard--cyan { --accent: var(--cyan); }
.page-contact .ccard--red { --accent: var(--red); }

.page-contact .ccard:hover,
.page-contact .ccard:focus-within {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .48);
}

.page-contact .ccard:hover::before,
.page-contact .ccard:focus-within::before {
  background: var(--accent);
  top: 8px;
  bottom: 8px;
}

.page-contact .ccard__tag {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-contact .ccard__title {
  margin: 6px 0 10px;
  font-size: clamp(18px, 2.4vw, 21px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--bone);
}

.page-contact .ccard__value {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(16px, 2.6vw, 22px);
  line-height: 1.35;
  color: var(--accent);
  word-break: break-all;
}

.page-contact .ccard__text {
  margin: 0;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 四步沟通 ---------- */
.page-contact .contact-subhead {
  margin: clamp(34px, 5vw, 48px) 0 16px;
  font-size: 15px;
  letter-spacing: .1em;
  font-weight: 700;
  color: var(--bone);
}

.page-contact .csteps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
  overflow: hidden;
}

.page-contact .csteps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0 16px;
  align-items: start;
  padding: 18px 20px;
  background: var(--ink);
  transition: background 180ms var(--ease);
}

.page-contact .csteps__item:hover {
  background: #101219;
}

.page-contact .csteps__idx {
  font-size: 22px;
  line-height: 1.1;
  font-weight: 800;
  color: var(--gold);
}

.page-contact .csteps__body h4 {
  margin: 0 0 5px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--bone);
}

.page-contact .csteps__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 右侧响应时间线 ---------- */
.page-contact .ctimeline {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 3.6vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
  background:
    linear-gradient(160deg, rgba(22, 224, 200, .06), transparent 52%),
    linear-gradient(20deg, rgba(200, 150, 30, .08), transparent 60%),
    var(--panel);
}

.page-contact .ctimeline__map {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: .55;
  pointer-events: none;
}

.page-contact .ctimeline__eyebrow {
  position: relative;
  margin: 0;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--cyan);
}

.page-contact .ctimeline__title {
  position: relative;
  margin: 8px 0 clamp(24px, 3vw, 32px);
  font-size: clamp(21px, 2.8vw, 27px);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--bone);
}

.page-contact .ctimeline__list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .ctimeline__row {
  position: relative;
  padding: 0 0 clamp(22px, 3vw, 30px) 26px;
  border-left: 1px solid var(--line);
}

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

.page-contact .ctimeline__row::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold-lit);
  box-shadow: 0 0 0 4px rgba(242, 201, 76, .14);
}

.page-contact .ctimeline__time {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-contact .ctimeline__row h3 {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--bone);
}

.page-contact .ctimeline__row p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 邮件指南 ---------- */
.page-contact .contact-write {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(20, 22, 29, .55), transparent 60%);
}

.page-contact .contact-write__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-contact .contact-kicker {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--gold);
}

.page-contact .contact-write__intro h2 {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.8vw, 36px);
  line-height: 1.18;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--bone);
}

.page-contact .contact-write__intro p {
  margin: 0 0 14px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .contact-write__hint {
  margin: 0;
  font-size: 14px;
}

.page-contact .mail-guide {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: pcMail;
}

.page-contact .mail-guide__item {
  position: relative;
  padding: clamp(20px, 3vw, 26px);
  padding-left: calc(var(--pc-card-pad) + 34px);
  border: 1px solid var(--line);
  border-left: 2px solid var(--gold-deep);
  border-radius: var(--pc-radius);
  background: rgba(10, 11, 15, .6);
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-contact .mail-guide__item:hover {
  border-left-color: var(--gold-lit);
  background: rgba(20, 22, 29, .8);
}

.page-contact .mail-guide__idx {
  position: absolute;
  left: clamp(16px, 2.4vw, 22px);
  top: clamp(20px, 3vw, 26px);
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 800;
  line-height: 1;
  color: var(--gold);
}

.page-contact .mail-guide__item h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--bone);
}

.page-contact .mail-guide__item p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 合作 ---------- */
.page-contact .contact-partner {
  border-top: 1px solid var(--line);
}

.page-contact .partner-list {
  display: grid;
  gap: 10px;
}

.page-contact .partner {
  border: 1px solid var(--line);
  border-radius: var(--pc-radius);
  background: var(--panel);
  transition: border-color 200ms var(--ease);
}

.page-contact .partner[open] {
  border-color: rgba(200, 150, 30, .55);
}

.page-contact .partner__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0 16px;
  padding: 18px clamp(18px, 2.6vw, 26px);
  cursor: pointer;
  list-style: none;
}

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

.page-contact .partner__summary:focus-visible {
  outline: 2px solid var(--gold-lit);
  outline-offset: -2px;
  border-radius: var(--pc-radius);
}

.page-contact .partner__num {
  font-size: 14px;
  font-weight: 800;
  color: var(--gold);
}

.page-contact .partner__name {
  font-size: clamp(16px, 2.2vw, 18px);
  font-weight: 700;
  color: var(--bone);
}

.page-contact .partner__cue {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-contact .partner__cue::before,
.page-contact .partner__cue::after {
  content: "";
  position: absolute;
  background: var(--mist);
  transition: transform 200ms var(--ease), background 200ms var(--ease);
}

.page-contact .partner__cue::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-contact .partner__cue::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-contact .partner[open] .partner__cue::after {
  transform: scaleY(0);
}

.page-contact .partner[open] .partner__cue::before {
  background: var(--gold-lit);
}

.page-contact .partner__body {
  padding: 0 clamp(18px, 2.6vw, 26px) 22px;
  border-top: 1px solid var(--line);
  margin-top: 2px;
  padding-top: 18px;
}

.page-contact .partner__body p {
  margin: 0 0 10px;
  max-width: 72ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .partner__meta {
  font-family: var(--font-mono);
  font-size: 13px !important;
  letter-spacing: .02em;
  color: var(--cyan) !important;
}

.page-contact .partner__note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  max-width: 74ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 地址 ---------- */
.page-contact .contact-place {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(120% 100% at 12% 0%, rgba(22, 224, 200, .07), transparent 60%),
    linear-gradient(180deg, rgba(20, 22, 29, .6), var(--ink));
}

.page-contact .contact-place__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}

.page-contact .contact-place__media {
  margin: 0;
}

.page-contact .contact-place__body h2 {
  margin: 0 0 14px;
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1.2;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--bone);
}

.page-contact .contact-place__addr {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.5;
  color: var(--gold-lit);
}

.page-contact .contact-place__body > p {
  margin: 0 0 14px;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .contact-place__note {
  padding-left: 14px;
  border-left: 2px solid var(--line);
  color: var(--bone) !important;
}

.page-contact .contact-place__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-top: 18px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .contact-write__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

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

@media (min-width: 1024px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 11fr) minmax(0, 9fr);
  }

  .page-contact .ctimeline {
    position: sticky;
    top: 96px;
  }
}

@media (max-width: 480px) {
  .page-contact .ccard__value {
    font-size: 15px;
  }

  .page-contact .csteps__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .page-contact .csteps__idx {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ccard,
  .page-contact .csteps__item,
  .page-contact .mail-guide__item,
  .page-contact .partner__cue::before,
  .page-contact .partner__cue::after {
    transition: none !important;
  }

  .page-contact .ccard:hover,
  .page-contact .ccard:focus-within {
    transform: none;
  }
}