.page-contact {
  --contact-cut: 16px;
  --contact-edge: clamp(1rem, 4vw, 2.5rem);
  background: var(--c-concrete);
  color: var(--c-bone);
}

.page-contact .container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--contact-edge);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  max-width: var(--content-max);
  margin-inline: auto;
  padding: 1.5rem var(--contact-edge) 0;
}

.page-contact .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem .55rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: .82rem;
  letter-spacing: .02em;
}

.page-contact .breadcrumb-list li {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
}

.page-contact .breadcrumb-list li + li::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 1px;
  background: var(--c-orange);
}

.page-contact .breadcrumb-link {
  color: var(--c-dust);
  text-decoration: none;
  transition: color .18s var(--ease);
}

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

.page-contact .breadcrumb-current {
  color: var(--c-bone);
  font-weight: 600;
}

/* ---------- 首屏 ---------- */
.contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 2.4rem) 0 clamp(2rem, 5vw, 3.4rem);
}

.contact-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -18%;
  width: min(560px, 82vw);
  height: 150%;
  background: repeating-linear-gradient(104deg, transparent 0 26px, rgba(255, 90, 31, .09) 26px 28px);
  transform: rotate(-2deg);
  pointer-events: none;
}

.contact-hero .container {
  position: relative;
  z-index: 1;
}

.contact-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 9vw, 4.8rem);
  line-height: .98;
  letter-spacing: -.02em;
  margin: .7rem 0 0;
}

.contact-hero-lede {
  max-width: 44rem;
  margin: 1.2rem 0 0;
  font-size: clamp(1rem, 2.2vw, 1.1rem);
  line-height: 1.78;
  color: #c9cec9;
}

.contact-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem 1.9rem;
  list-style: none;
  margin: 1.7rem 0 0;
  padding: 0;
}

.contact-hero-facts li {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  font-size: .84rem;
}

.contact-fact-key {
  color: var(--c-dust);
}

.contact-fact-val {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: .03em;
  color: var(--c-bone);
  font-variant-numeric: tabular-nums;
}

.contact-hero-facts li:nth-child(2) .contact-fact-val {
  color: var(--c-cyan);
}

/* ---------- 双栏主体 ---------- */
.contact-split {
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 2.75rem);
}

.contact-h2 {
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 4.2vw, 2.35rem);
  line-height: 1.12;
  letter-spacing: -.01em;
  margin: 0 0 .6rem;
  color: var(--c-bone);
}

.page-contact .contact-sub {
  margin: 0 0 1.4rem;
  font-size: .92rem;
  line-height: 1.72;
}

/* 渠道卡 */
.channel-card {
  position: relative;
  background: var(--c-graphite);
  padding: clamp(1.25rem, 3vw, 1.85rem) clamp(1.1rem, 3vw, 1.7rem);
  clip-path: polygon(0 0,
    calc(100% - var(--contact-cut)) 0,
    100% var(--contact-cut),
    100% 100%,
    var(--contact-cut) 100%,
    0 calc(100% - var(--contact-cut)));
  transition: transform .24s var(--ease), background .24s var(--ease);
}

.channel-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--c-orange), var(--c-orange-deep));
}

.channel-card + .channel-card {
  margin-top: 1rem;
}

.channel-card:hover {
  transform: translateY(-4px);
  background: #32363b;
}

.channel-index {
  position: absolute;
  top: .25rem;
  right: 1rem;
  font-family: var(--font-display);
  font-size: 3.1rem;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--c-steel);
  pointer-events: none;
}

.channel-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.1;
  letter-spacing: -.01em;
  margin: .7rem 0 .45rem;
  color: var(--c-bone);
}

.channel-desc {
  margin: 0 0 .9rem;
  font-size: .92rem;
  line-height: 1.72;
  color: #c3c8c3;
}

.channel-mail {
  display: inline-block;
  margin: 0;
  padding: .45rem .7rem;
  font-size: .86rem;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--c-cyan);
  background: rgba(0, 229, 255, .08);
  border-left: 2px solid var(--c-cyan);
  overflow-wrap: anywhere;
}

.channel-list {
  list-style: none;
  margin: .95rem 0 0;
  padding: 0;
  display: grid;
  gap: .4rem;
  font-size: .85rem;
  color: #aab0aa;
}

.channel-list li {
  position: relative;
  padding-left: 1rem;
  line-height: 1.6;
}

.channel-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .4rem;
  height: .4rem;
  background: var(--c-orange);
}

/* 时间区 */
.contact-col-time {
  display: grid;
  gap: clamp(1.25rem, 3vw, 1.9rem);
}

.time-panel {
  position: relative;
  background: linear-gradient(135deg, #2a2d31 0%, #242729 58%, #1b1d20 100%);
  border-top: 3px solid var(--c-orange);
  padding: clamp(1.35rem, 3.6vw, 2.25rem);
  clip-path: polygon(0 0,
    100% 0,
    100% calc(100% - var(--contact-cut)),
    calc(100% - var(--contact-cut)) 100%,
    0 100%);
}

.time-big {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .05em .12em;
  margin: .8rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 8.4vw, 4.4rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--c-bone);
  font-variant-numeric: tabular-nums;
}

.time-colon {
  color: var(--c-cyan);
}

.time-dash {
  color: var(--c-orange);
}

.time-lead {
  margin: .9rem 0 0;
  font-size: .95rem;
  line-height: 1.75;
  color: #cfd3cf;
}

.time-rows {
  margin-top: 1.4rem;
  border-top: 1px solid var(--c-steel);
}

.time-row {
  display: grid;
  grid-template-columns: 5.4rem minmax(0, 1fr);
  gap: .5rem .9rem;
  padding: .8rem 0;
  border-bottom: 1px solid rgba(67, 72, 78, .65);
  font-size: .88rem;
  line-height: 1.65;
}

.time-row-key {
  color: var(--c-dust);
}

.time-row-val {
  color: #d3d8d3;
  overflow-wrap: anywhere;
}

.time-row:nth-child(1) .time-row-val {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: .04em;
  color: var(--c-orange);
  font-variant-numeric: tabular-nums;
}

.contact-time-fig {
  margin: 0;
}

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

.page-contact .img-frame-caption {
  font-size: .8rem;
  color: var(--c-dust);
}

/* ---------- 地址 ---------- */
.contact-map {
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
}

.map-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.35rem, 3.5vw, 2.2rem);
  padding: clamp(1.35rem, 4vw, 2.5rem);
  background-color: var(--c-graphite);
  background-image:
    linear-gradient(to right, rgba(67, 72, 78, .45) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(67, 72, 78, .45) 1px, transparent 1px);
  background-size: 34px 34px;
  clip-path: polygon(var(--contact-cut) 0,
    100% 0,
    100% calc(100% - var(--contact-cut)),
    calc(100% - var(--contact-cut)) 100%,
    0 100%,
    0 var(--contact-cut));
}

.map-addr {
  margin: .2rem 0 .9rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  line-height: 1.35;
  letter-spacing: .01em;
  color: var(--c-cyan);
  overflow-wrap: anywhere;
}

.map-copy {
  margin: 0 0 1.1rem;
  font-size: .92rem;
  line-height: 1.75;
  max-width: 34rem;
}

.map-link {
  margin-top: .2rem;
}

.map-fig {
  margin: 0;
}

@media (min-width: 820px) {
  .map-panel {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
  }
}

/* ---------- 写信要点 ---------- */
.contact-brief {
  background: var(--c-bone);
  color: var(--c-concrete);
  padding: clamp(2.4rem, 6vw, 4.2rem) 0;
}

.contact-brief .contact-h2 {
  color: var(--c-concrete);
}

.brief-head {
  max-width: 46rem;
}

.brief-lede {
  margin: 0;
  font-size: .98rem;
  line-height: 1.78;
  color: #4d5257;
}

.brief-list {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.2rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.brief-item {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  gap: .3rem 1rem;
  padding: 1.15rem 0;
  border-top: 1px solid rgba(30, 32, 35, .16);
}

.brief-item:last-child {
  border-bottom: 1px solid rgba(30, 32, 35, .16);
}

.brief-num {
  grid-row: span 2;
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.15;
  color: var(--c-orange-deep);
  font-variant-numeric: tabular-nums;
}

.brief-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1.3;
  letter-spacing: -.005em;
  color: var(--c-concrete);
}

.brief-body {
  margin: .3rem 0 0;
  font-size: .9rem;
  line-height: 1.72;
  color: #4d5257;
}

/* ---------- 合作横向条 ---------- */
.contact-collab {
  position: relative;
  overflow: hidden;
  background: linear-gradient(100deg, #23262a 0%, #1b1d20 62%, #191b1e 100%);
  border-block: 1px solid var(--c-steel);
  padding: clamp(2rem, 5vw, 3.2rem) 0;
}

.contact-collab::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c-orange) 0 34%, var(--c-cyan) 34% 48%, transparent 48% 100%);
}

.collab-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 3vw, 2.4rem);
  position: relative;
  z-index: 1;
}

.collab-copy {
  margin: 0 0 1rem;
  font-size: .94rem;
  line-height: 1.78;
  color: #c6cbc6;
  max-width: 40rem;
}

.collab-mail {
  display: inline-block;
  margin: 0 0 .8rem;
  padding: .5rem .8rem;
  font-size: .92rem;
  font-weight: 600;
  color: var(--c-concrete);
  background: var(--c-orange);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  overflow-wrap: anywhere;
}

.collab-hint {
  margin: 0;
  font-size: .84rem;
  line-height: 1.7;
  color: var(--c-dust);
}

/* ---------- 下一步 ---------- */
.contact-next {
  padding: clamp(2.4rem, 6vw, 4rem) 0 clamp(3rem, 7vw, 5rem);
}

.next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.4rem;
}

.next-card {
  display: grid;
  gap: .4rem;
  padding: 1.15rem 1.2rem;
  text-decoration: none;
  background: var(--c-graphite);
  border-left: 3px solid var(--c-steel);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: transform .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}

.next-card:hover,
.next-card:focus-visible {
  transform: translateY(-3px);
  border-left-color: var(--c-orange);
  background: #31353a;
}

.next-kicker {
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--c-orange);
}

.next-label {
  font-size: .95rem;
  line-height: 1.6;
  color: var(--c-bone);
}

/* ---------- 桌面双栏 ---------- */
@media (min-width: 900px) {
  .contact-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(2rem, 3.6vw, 3.4rem);
    align-items: start;
  }

  .channel-card + .channel-card {
    margin-top: 0;
  }

  .channel-card--2 {
    margin-top: 1.6rem;
  }

  .channel-card--3 {
    margin-top: 3.1rem;
  }

  .brief-list {
    grid-template-columns: 1fr 1fr;
    column-gap: clamp(1.6rem, 4vw, 3rem);
  }

  .next-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .next-card:nth-child(even) {
    margin-top: 1.4rem;
  }
}

@media (min-width: 1080px) {
  .collab-inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
  }

  .next-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.1rem;
  }

  .next-card:nth-child(2) {
    margin-top: 1.6rem;
  }

  .next-card:nth-child(3) {
    margin-top: .8rem;
  }

  .next-card:nth-child(4) {
    margin-top: 2.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .next-card {
    transition: none;
  }
}
<<<END>>>