.page-contact {
  --pc-num-hot: var(--c-hot);
  background: var(--c-base);
  color: var(--c-ink);
}

/* ---------- 首屏框景 ---------- */
.page-contact .page-contact__hero {
  position: relative;
  padding-block: clamp(104px, 15vw, 176px) clamp(36px, 5vw, 60px);
  border-bottom: var(--line);
  background:
    radial-gradient(130% 100% at 6% 0%, rgba(27, 59, 48, 0.92) 0%, rgba(11, 20, 16, 0) 62%),
    radial-gradient(80% 70% at 100% 100%, rgba(53, 224, 208, 0.08) 0%, rgba(11, 20, 16, 0) 68%),
    var(--c-base);
  overflow: hidden;
}

.page-contact .page-contact__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(140, 154, 147, 0.13) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(140, 154, 147, 0.13) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 70%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 70%);
  pointer-events: none;
}

.page-contact .page-contact__hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 7px;
  background-image: repeating-linear-gradient(to right, rgba(140, 154, 147, 0.5) 0 1px, transparent 1px 26px);
  pointer-events: none;
}

.page-contact .page-contact__hero > .shell {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(22px, 4vw, 38px);
  font-family: var(--font-num);
  font-size: var(--step-note);
  letter-spacing: 0.06em;
  color: var(--c-rock);
}

.page-contact .breadcrumbs__item {
  color: var(--c-rock);
  text-decoration: none;
}

.page-contact .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 10px;
  color: rgba(140, 154, 147, 0.55);
}

.page-contact .breadcrumbs__item[aria-current="page"] {
  color: var(--c-ink);
}

.page-contact a.breadcrumbs__item:hover {
  color: var(--c-cyan);
}

.page-contact .pc-eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: var(--step-note);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-rock);
}

.page-contact .page-contact__title {
  margin: 0 0 clamp(16px, 2.2vw, 26px);
  max-width: 22ch;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--step-h1);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-ink);
}

.page-contact .page-contact__lede {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(16px, 1.2vw, 18px);
  line-height: 1.85;
  color: rgba(237, 232, 219, 0.82);
}

.page-contact .hero-strip {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: clamp(30px, 5vw, 56px);
  border-top: var(--line);
}

.page-contact .hero-strip__cell {
  padding: clamp(16px, 2.2vw, 24px) 0;
  border-bottom: var(--line);
}

.page-contact .hero-strip__cell:last-child {
  border-bottom: 0;
}

.page-contact .hero-strip__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(34px, 4.2vw, 52px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-cyan);
  margin-bottom: 10px;
}

.page-contact .hero-strip__num--orange { color: var(--c-orange); }
.page-contact .hero-strip__num--amber { color: var(--c-amber); }

.page-contact .hero-strip__label {
  display: block;
  max-width: 28ch;
  font-size: var(--step-note);
  line-height: 1.7;
  color: rgba(237, 232, 219, 0.66);
}

/* ---------- 通用区块 ---------- */
.page-contact .pc-block {
  padding: clamp(48px, 6.5vw, 86px) 0;
}

.page-contact .pc-block--band {
  background: var(--c-panel);
  border-block: var(--line);
}

.page-contact .pc-block--closing {
  border-top: var(--line);
  padding-bottom: clamp(56px, 7vw, 96px);
}

.page-contact .pc-h2 {
  margin: 0 0 12px;
  max-width: 26ch;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--step-h2);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-contact .pc-sub {
  margin: 0 0 clamp(26px, 4vw, 42px);
  max-width: 62ch;
  font-size: var(--step-body);
  line-height: 1.85;
  color: rgba(237, 232, 219, 0.72);
}

.page-contact .pc-sub a,
.page-contact .pc-note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.45);
}

.page-contact .pc-sub a:hover,
.page-contact .pc-note a:hover {
  border-bottom-color: var(--c-cyan);
}

.page-contact .pc-note {
  margin: clamp(24px, 3vw, 36px) 0 0;
  font-size: var(--step-body);
  line-height: 1.85;
  color: rgba(237, 232, 219, 0.7);
}

/* ---------- 合作方向 ---------- */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--grid-gap);
}

.page-contact .coop-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 2.4vw, 34px);
  background: var(--c-panel);
  border: var(--line);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), background 0.35s var(--ease);
}

.page-contact .coop-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 52px;
  height: 3px;
  background: var(--c-cyan);
}

.page-contact .coop-card:nth-child(2)::before { background: var(--c-orange); }
.page-contact .coop-card:nth-child(3)::before { background: var(--c-amber); }

.page-contact .coop-card:hover {
  transform: translateY(-5px);
  border-color: rgba(53, 224, 208, 0.45);
  background: var(--c-seam);
}

.page-contact .coop-card__no {
  font-family: var(--font-num);
  font-size: var(--step-note);
  letter-spacing: 0.18em;
  color: var(--c-rock);
}

.page-contact .coop-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--step-h3);
  letter-spacing: 0;
  color: var(--c-ink);
}

.page-contact .coop-card__text {
  margin: 0;
  font-size: var(--step-body);
  line-height: 1.8;
  color: rgba(237, 232, 219, 0.76);
}

.page-contact .coop-card__meta {
  display: grid;
  grid-template-columns: 3.4em 1fr;
  gap: 6px 12px;
  margin: auto 0 0;
  padding-top: 14px;
  border-top: var(--line);
  font-size: var(--step-note);
  line-height: 1.7;
}

.page-contact .coop-card__meta dt {
  font-family: var(--font-num);
  letter-spacing: 0.08em;
  color: var(--c-rock);
}

.page-contact .coop-card__meta dd {
  margin: 0;
  color: rgba(237, 232, 219, 0.86);
}

/* ---------- 渠道区分 ---------- */
.page-contact .page-contact__media {
  margin: 0 0 clamp(26px, 4vw, 42px);
  border: var(--line);
  overflow: hidden;
  background: var(--c-base);
}

.page-contact .page-contact__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.06);
}

.page-contact .page-contact__media .media__caption {
  margin: 0;
  padding: 12px 16px;
  border-top: var(--line);
  font-size: var(--step-note);
  line-height: 1.6;
  color: var(--c-rock);
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--grid-gap);
}

.page-contact .channel {
  padding: clamp(20px, 2.4vw, 32px);
  border: var(--line);
  border-left: 3px solid var(--c-cyan);
  background:
    linear-gradient(180deg, rgba(53, 224, 208, 0.09), rgba(53, 224, 208, 0) 68%),
    var(--c-base);
}

.page-contact .channel--amber {
  border-left-color: var(--c-amber);
  background:
    linear-gradient(180deg, rgba(242, 180, 65, 0.1), rgba(242, 180, 65, 0) 68%),
    var(--c-base);
}

.page-contact .channel__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--step-h3);
  color: var(--c-ink);
}

.page-contact .channel__text {
  margin: 0 0 16px;
  font-size: var(--step-body);
  line-height: 1.8;
  color: rgba(237, 232, 219, 0.76);
}

.page-contact .channel__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--line);
}

.page-contact .channel__list li {
  position: relative;
  padding: 10px 0 10px 20px;
  border-bottom: var(--line);
  font-size: var(--step-note);
  line-height: 1.7;
  color: rgba(237, 232, 219, 0.72);
}

.page-contact .channel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 8px;
  height: 1px;
  background: var(--c-cyan);
}

.page-contact .channel--amber .channel__list li::before {
  background: var(--c-amber);
}

/* ---------- 双栏任务式布局 ---------- */
.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: calc(var(--grid-gap) * 1.8);
  align-items: start;
}

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

/* ---------- 反馈三步 ---------- */
.page-contact .report-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--line);
}

.page-contact .report-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2vw, 26px);
  padding: clamp(20px, 2.6vw, 30px) 0;
  border-bottom: var(--line);
}

.page-contact .report-steps__no {
  font-family: var(--font-num);
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--c-cyan);
}

.page-contact .report-steps__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--step-h3);
  color: var(--c-ink);
}

.page-contact .report-steps__text {
  margin: 0;
  font-size: var(--step-body);
  line-height: 1.8;
  color: rgba(237, 232, 219, 0.74);
}

/* ---------- 响应时间 ---------- */
.page-contact .response-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--grid-gap);
}

.page-contact .response {
  padding: clamp(20px, 2.4vw, 30px);
  border: var(--line);
  background: var(--c-base);
}

.page-contact .response__num {
  display: inline-block;
  font-family: var(--font-num);
  font-size: clamp(44px, 6vw, 72px);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--c-cyan);
}

.page-contact .response__num--amber { color: var(--c-amber); }
.page-contact .response__num--clay { color: var(--c-clay); }

.page-contact .response__unit {
  margin-left: 12px;
  font-size: var(--step-note);
  letter-spacing: 0.08em;
  color: var(--c-rock);
}

.page-contact .response__text {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: var(--line);
  font-size: var(--step-note);
  line-height: 1.8;
  color: rgba(237, 232, 219, 0.72);
}

/* ---------- 合作四步 ---------- */
.page-contact .flow {
  border-top: var(--line);
}

.page-contact .flow__step {
  border-bottom: var(--line);
}

.page-contact .flow__step .fold__summary {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 20px);
  padding: clamp(16px, 2.2vw, 22px) 0;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .flow__no {
  font-family: var(--font-num);
  font-size: var(--step-note);
  letter-spacing: 0.16em;
  color: var(--c-rock);
  min-width: 2.4em;
}

.page-contact .flow__title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: var(--step-h3);
  color: var(--c-ink);
}

.page-contact .flow__step[open] .flow__title {
  color: var(--c-cyan);
}

.page-contact .flow__step .fold__body {
  padding: 0 0 clamp(18px, 2.4vw, 26px) 0;
}

.page-contact .flow__step .fold__body p {
  margin: 0;
  max-width: 60ch;
  font-size: var(--step-body);
  line-height: 1.85;
  color: rgba(237, 232, 219, 0.74);
}

/* ---------- 侧栏联系卡 ---------- */
.page-contact .contact-aside {
  display: flex;
  flex-direction: column;
  gap: var(--grid-gap);
  min-width: 0;
}

.page-contact .aside__media {
  margin: 0;
  border: var(--line);
  overflow: hidden;
  background: var(--c-base);
}

.page-contact .aside__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  filter: saturate(0.78) contrast(1.05);
}

.page-contact .contact-card {
  padding: clamp(22px, 2.4vw, 30px);
  background: var(--c-seam);
  border: var(--line-strong);
}

.page-contact .contact-card__title {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--step-h3);
  color: var(--c-ink);
}

.page-contact .contact-card__list {
  margin: 0;
  border-top: var(--line);
}

.page-contact .contact-card__row {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-bottom: var(--line);
}

.page-contact .contact-card__key {
  font-family: var(--font-num);
  font-size: var(--step-note);
  letter-spacing: 0.16em;
  color: var(--c-rock);
}

.page-contact .contact-card__val {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--c-cyan);
  overflow-wrap: anywhere;
}

.page-contact .contact-card__val--text {
  font-family: var(--font-body);
  letter-spacing: 0;
  color: var(--c-ink);
}

.page-contact .contact-card__note {
  margin: 18px 0 0;
  font-size: var(--step-note);
  line-height: 1.75;
  color: rgba(237, 232, 219, 0.66);
}

.page-contact .contact-card__icp {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: var(--line);
  font-family: var(--font-num);
  font-size: var(--step-note);
  letter-spacing: 0.06em;
  color: var(--c-rock);
}

.page-contact .contact-aside .tick--h {
  height: 6px;
  background-image: repeating-linear-gradient(to right, rgba(140, 154, 147, 0.42) 0 1px, transparent 1px 22px);
}

/* ---------- 收尾 ---------- */
.page-contact .closing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 40px);
}

.page-contact .closing-grid__lead .pc-sub {
  margin-bottom: 0;
}

.page-contact .closing-grid__side {
  display: flex;
  align-items: flex-end;
}

.page-contact .closing-grid__side .meta--edge {
  margin: 0;
  font-size: var(--step-note);
  line-height: 1.7;
  color: var(--c-rock);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .hero-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .hero-strip__cell {
    padding-inline: clamp(14px, 2.2vw, 28px);
    border-bottom: 0;
    border-right: var(--line);
  }

  .page-contact .hero-strip__cell:first-child {
    padding-left: 0;
  }

  .page-contact .hero-strip__cell:last-child {
    border-right: 0;
    padding-right: 0;
  }

  .page-contact .closing-grid {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
}

@media (min-width: 820px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 1fr) 372px;
    gap: clamp(32px, 4vw, 64px);
  }

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

@media (min-width: 1280px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 1fr) 396px;
  }
}