.page-contact {
  --contact-cut: 18px;
  --contact-ink: rgba(11, 23, 48, .78);
  display: block;
}

/* —— 面包屑 —— */
.page-contact .breadcrumbs {
  padding-top: clamp(1rem, 3vw, 2rem);
  padding-bottom: .5rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--text-dim);
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}

.page-contact .breadcrumbs a {
  color: var(--cyan-400);
  text-decoration: none;
}

.page-contact .breadcrumbs a:hover {
  text-decoration: underline;
}

/* —— 首屏 —— */
.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.page-contact .contact-hero__copy h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 5.4vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -.005em;
  color: var(--white);
  margin: .6rem 0 1.1rem;
  max-width: 20em;
}

.page-contact .contact-hero__lede {
  font-size: clamp(1rem, 1.6vw, 1.0625rem);
  line-height: 1.85;
  color: var(--text-dim);
  max-width: 42em;
  margin: 0 0 1.6rem;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.page-contact .contact-hero__meta {
  margin: 1.2rem 0 0;
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--cyan-400);
}

.page-contact .contact-hero__media {
  width: 100%;
}

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

/* —— 三通道 + 场景分流 —— */
.page-contact .contact-split {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.page-contact .contact-channels {
  display: grid;
  gap: 1.1rem;
}

.page-contact .channel-card {
  position: relative;
  padding: clamp(1.25rem, 2.6vw, 1.9rem);
  background: var(--navy-700);
  color: var(--text);
  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)));
}

.page-contact .channel-card--paper {
  background: var(--paper-100);
  color: var(--navy-800);
}

.page-contact .channel-card__idx {
  margin: 0 0 .5rem;
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--cyan-700);
}

.page-contact .channel-card--line .channel-card__idx {
  color: var(--cyan-400);
}

.page-contact .channel-card__title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.4vw, 1.35rem);
  letter-spacing: .02em;
  margin: 0;
  color: inherit;
}

.page-contact .channel-card__value {
  font-size: clamp(1.02rem, 2.4vw, 1.4rem);
  letter-spacing: .01em;
  color: var(--cyan-400);
  margin: .7rem 0 .9rem;
  word-break: break-all;
  line-height: 1.4;
}

.page-contact .channel-card--paper .channel-card__value {
  color: var(--cyan-700);
}

.page-contact .channel-card--line .channel-card__value {
  font-size: clamp(1.55rem, 5vw, 2.3rem);
  color: var(--white);
  letter-spacing: .02em;
}

.page-contact .channel-card__desc {
  font-size: .94rem;
  line-height: 1.8;
  margin: 0;
  color: var(--text-dim);
}

.page-contact .channel-card--paper .channel-card__desc {
  color: var(--contact-ink);
}

.page-contact .channel-card__addr {
  font-size: clamp(.9rem, 1.8vw, 1rem);
  line-height: 1.9;
  margin: .7rem 0 .9rem;
  padding-left: .95rem;
  border-left: 2px solid var(--cyan-700);
  color: var(--navy-800);
}

.page-contact .channel-card__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1.1rem 0 0;
  padding: 0;
}

.page-contact .channel-card__tags li {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  padding: .3rem .6rem;
  border: 1px solid var(--hairline);
  color: var(--cyan-400);
}

.page-contact .channel-card--paper .channel-card__tags li {
  border-color: rgba(11, 23, 48, .22);
  color: var(--navy-800);
  background: rgba(255, 255, 255, .5);
}

.page-contact .channel-card__media {
  margin: 1.2rem 0 0;
  width: 100%;
}

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

/* 分流面板 */
.page-contact .contact-router {
  padding: clamp(1.25rem, 2.6vw, 2rem);
  background: var(--navy-800);
  border-top: 3px solid var(--cyan-400);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--contact-cut)), calc(100% - var(--contact-cut)) 100%, 0 100%);
}

.page-contact .contact-router__head {
  margin-bottom: 1.1rem;
}

.page-contact .contact-router__title {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  color: var(--white);
  margin: 0 0 .4rem;
}

.page-contact .contact-router__note {
  margin: 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .contact-router__chips {
  align-items: center;
  margin-bottom: 1.1rem;
}

.page-contact .contact-router__count {
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--text-dim);
}

.page-contact .router-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .85rem;
}

.page-contact .router-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .85rem;
  padding: 1rem 1.05rem;
  background: var(--navy-700);
  border-left: 3px solid var(--cyan-400);
}

.page-contact .router-item__idx {
  font-size: .82rem;
  letter-spacing: .1em;
  color: var(--cyan-400);
  padding-top: .15rem;
}

.page-contact .router-item__title {
  font-family: var(--font-display);
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--white);
  margin: 0 0 .5rem;
}

.page-contact .router-item__desc {
  margin: 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-contact .router-item__hint {
  margin: .8rem 0 0;
  padding: .6rem .75rem;
  font-size: .78rem;
  line-height: 1.75;
  color: var(--cyan-400);
  background: rgba(53, 242, 214, .07);
  border-left: 1px solid var(--hairline);
  word-break: break-word;
}

/* —— 准备清单 —— */
.page-contact .prep-band {
  background: var(--paper-100);
  color: var(--navy-800);
  padding: clamp(1.4rem, 3.6vw, 2.6rem);
  clip-path: polygon(var(--contact-cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--contact-cut));
}

.page-contact .prep-band__eyebrow {
  color: var(--cyan-700);
}

.page-contact .prep-band__title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3.4vw, 2rem);
  line-height: 1.25;
  margin: .5rem 0 .7rem;
  color: var(--navy-800);
}

.page-contact .prep-band__note {
  margin: 0;
  max-width: 52em;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--contact-ink);
}

.page-contact .prep-list {
  list-style: none;
  margin: clamp(1.2rem, 3vw, 1.8rem) 0 0;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-contact .prep-item label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .8rem;
  align-items: start;
  padding: .75rem .85rem;
  border: 1px solid rgba(11, 23, 48, .18);
  background: rgba(255, 255, 255, .55);
  cursor: pointer;
  transition: border-color var(--t-fast), background-color var(--t-fast);
}

.page-contact .prep-item label:hover {
  border-color: var(--cyan-700);
  background: rgba(255, 255, 255, .85);
}

.page-contact .prep-item__box {
  width: 1.05rem;
  height: 1.05rem;
  margin: .25rem 0 0;
  accent-color: var(--cyan-700);
  flex: none;
}

.page-contact .prep-item__text {
  display: block;
  min-width: 0;
}

.page-contact .prep-item__title {
  display: block;
  font-size: .96rem;
  font-weight: 600;
  color: var(--navy-800);
  margin-bottom: .2rem;
}

.page-contact .prep-item__note {
  display: block;
  font-size: .84rem;
  line-height: 1.7;
  color: var(--contact-ink);
}

/* —— 跟进流程 + 延伸入口 —— */
.page-contact .contact-tail {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.6rem);
  align-items: start;
}

.page-contact .flow-list {
  display: grid;
  gap: .7rem;
  margin-top: clamp(1rem, 2.5vw, 1.5rem);
}

.page-contact .flow-step {
  background: var(--navy-800);
  border: 1px solid var(--hairline-soft);
}

.page-contact .flow-step[open] {
  border-color: var(--hairline);
}

.page-contact .flow-step summary {
  display: flex;
  align-items: baseline;
  gap: .75rem;
  padding: 1rem 1.15rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 1.02rem;
  color: var(--white);
}

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

.page-contact .flow-step summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  color: var(--cyan-400);
}

.page-contact .flow-step[open] summary::after {
  content: "\2013";
}

.page-contact .flow-step__idx {
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--cyan-400);
}

.page-contact .flow-step__body {
  margin: 0;
  padding: 0 1.15rem 1.15rem;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-contact .link-grid {
  display: grid;
  gap: .8rem;
  margin-top: clamp(1rem, 2.5vw, 1.5rem);
}

.page-contact .link-card {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: 1rem 1.1rem;
  background: var(--navy-800);
  border: 1px solid var(--hairline-soft);
  text-decoration: none;
  color: var(--text);
  transition: border-color var(--t-fast), transform var(--t-fast);
}

.page-contact .link-card:hover,
.page-contact .link-card:focus-visible {
  border-color: var(--cyan-400);
  transform: translateY(-2px);
}

.page-contact .link-card__title {
  font-family: var(--font-display);
  font-size: 1.02rem;
  color: var(--white);
}

.page-contact .link-card__note {
  font-size: .84rem;
  line-height: 1.7;
  color: var(--text-dim);
}

/* —— 响应式 —— */
@media (min-width: 640px) {
  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  }

  .page-contact .contact-tail {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  }

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

@media (min-width: 1040px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  }

  .page-contact .contact-channels .channel-card:nth-child(2) {
    margin-left: 1.6rem;
  }

  .page-contact .channel-card--line {
    clip-path: polygon(0 0, 100% 0, 100% 100%, var(--contact-cut) 100%, 0 calc(100% - var(--contact-cut)));
  }
}

@media (min-width: 1200px) {
  .page-contact .prep-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .link-card {
    transition: none;
  }

  .page-contact .link-card:hover,
  .page-contact .link-card:focus-visible {
    transform: none;
  }
}