.page-contact {
  --pc-pad: clamp(36px, 6vw, 68px);
  --pc-radius: 16px;
  --pc-note: rgba(7, 19, 43, 0.72);
  position: relative;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: center;
  padding: clamp(20px, 4vw, 34px) 0 clamp(30px, 5vw, 52px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: -14px calc(-1 * var(--gutter)) 0;
  z-index: -1;
  background:
    radial-gradient(120% 140% at 4% 0%, rgba(255, 90, 54, 0.22), transparent 62%),
    linear-gradient(158deg, rgba(13, 31, 63, 0.95), rgba(7, 19, 43, 0.35));
  clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
}

.page-contact .hero-copy h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 8.2vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.028em;
  color: var(--paper);
}

.page-contact .hero-lede {
  margin: 16px 0 0;
  max-width: 42ch;
  font-size: clamp(1rem, 2.6vw, 1.1rem);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .hero-figure {
  margin: 0;
  aspect-ratio: 3 / 2;
}

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

/* ---------- 直连通道 ---------- */
.page-contact .channels {
  display: grid;
  gap: clamp(22px, 3.5vw, 36px);
  padding: var(--pc-pad) 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .channel-line {
  display: block;
  padding: 18px 0 20px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--paper);
  transition: border-color 180ms ease, color 180ms ease;
}

.page-contact .channel-line:hover,
.page-contact .channel-line:focus-visible {
  border-color: var(--flame);
}

.page-contact .channel-label {
  display: block;
  font-family: var(--font-label);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--mist);
  margin-bottom: 8px;
}

.page-contact .channel-value {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.35rem, 5.4vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--paper);
  overflow-wrap: anywhere;
  transition: color 180ms ease;
}

.page-contact .channel-value.is-email {
  font-size: clamp(1rem, 3.6vw, 1.6rem);
}

.page-contact .channel-line:hover .channel-value {
  color: var(--flame);
}

.page-contact .channel-note {
  display: block;
  margin-top: 10px;
  max-width: 46ch;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .channel-side {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .contact-card {
  position: relative;
  overflow: hidden;
  padding: 20px 22px 22px 26px;
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--link), var(--violet));
}

.page-contact .contact-card--urgent::before {
  background: linear-gradient(180deg, var(--flame), var(--flame-soft));
}

.page-contact .contact-card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .contact-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.74;
  color: var(--mist);
}

.page-contact .channel-foot {
  margin: 4px 0 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--mist);
  border-left: 2px dashed var(--line);
  padding-left: 14px;
}

/* ---------- 反馈路径 ---------- */
.page-contact .routes {
  padding: var(--pc-pad) 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .route-figure {
  overflow-x: auto;
  padding-bottom: 6px;
  margin: clamp(18px, 3vw, 30px) 0 clamp(20px, 4vw, 34px);
}

.page-contact .route-map {
  display: block;
  width: 100%;
  min-width: 560px;
  height: auto;
}

.page-contact .rm-grid line {
  stroke: var(--line-soft);
  stroke-width: 1;
}

.page-contact .rm-node {
  fill: var(--ink-800);
  stroke: var(--line);
  stroke-width: 1.5;
}

.page-contact .rm-node-title {
  fill: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
}

.page-contact .rm-node-sub {
  fill: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-contact .rm-path {
  fill: none;
  stroke-width: 2;
  stroke-dasharray: 5 7;
}

.page-contact .rm-path--flame { stroke: var(--flame); }
.page-contact .rm-path--live { stroke: var(--live); }
.page-contact .rm-path--link { stroke: var(--link); }

.page-contact .rm-dot { stroke-width: 2.5; }
.page-contact .rm-dot--flame { fill: var(--ink-900); stroke: var(--flame); }
.page-contact .rm-dot--live { fill: var(--ink-900); stroke: var(--live); }
.page-contact .rm-dot--link { fill: var(--ink-900); stroke: var(--link); }

.page-contact .rm-label {
  fill: var(--paper);
  font-family: var(--font-label);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.page-contact .rm-sub {
  fill: var(--mist);
  font-family: var(--font-body);
  font-size: 12.5px;
}

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

.page-contact .scenario-card {
  padding: 20px 20px 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(13, 31, 63, 0.88), rgba(7, 19, 43, 0.55));
  transition: border-color 180ms ease;
}

.page-contact .scenario-card:hover {
  border-color: var(--line);
}

.page-contact .scenario-card h3 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  font-size: 1.04rem;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .scenario-idx {
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--flame);
}

.page-contact .scenario-card > p {
  margin: 10px 0 0;
  font-size: 0.92rem;
  line-height: 1.74;
  color: var(--mist);
}

.page-contact .scenario-more {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.page-contact .scenario-more summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-label);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--live);
}

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

.page-contact .scenario-more summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--mist);
}

.page-contact .scenario-more[open] summary::after {
  content: "−";
  color: var(--live);
}

.page-contact .scenario-more ul {
  margin: 12px 0 0;
  padding-left: 18px;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .scenario-more li + li {
  margin-top: 4px;
}

/* ---------- 合作 ---------- */
.page-contact .coop {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: center;
  padding: var(--pc-pad) 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .coop-list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-contact .coop-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.93rem;
  line-height: 1.74;
  color: var(--mist);
}

.page-contact .coop-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--violet);
}

.page-contact .coop-list strong {
  color: var(--paper);
  font-weight: 700;
  margin-right: 8px;
}

.page-contact .coop-note {
  margin: 18px 0 22px;
  font-family: var(--font-serif);
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--paper);
  border-left: 2px solid var(--flame);
  padding-left: 14px;
}

.page-contact .coop-figure {
  margin: 0;
  aspect-ratio: 5 / 4;
}

/* ---------- 地址 ---------- */
.page-contact .address {
  padding: var(--pc-pad) 0 0;
}

.page-contact .addr-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--pc-radius);
  background: var(--sand);
  color: var(--ink-900);
  padding: clamp(24px, 5vw, 44px);
}

.page-contact .addr-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(7, 19, 43, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7, 19, 43, 0.14) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(85% 110% at 100% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(85% 110% at 100% 0%, #000 0%, transparent 72%);
}

.page-contact .addr-body {
  position: relative;
  z-index: 1;
}

.page-contact .addr-eyebrow {
  color: rgba(7, 19, 43, 0.6);
}

.page-contact .addr-card h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4.4vw, 2rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-contact .addr-value {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1.02rem, 3.2vw, 1.4rem);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--ink-900);
  user-select: all;
}

.page-contact .addr-note {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 0.9rem;
  line-height: 1.76;
  color: var(--pc-note);
}

.page-contact .addr-meta {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(7, 19, 43, 0.18);
  display: grid;
  gap: 14px;
}

.page-contact .addr-meta dt {
  font-family: var(--font-label);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: rgba(7, 19, 43, 0.58);
  margin-bottom: 4px;
}

.page-contact .addr-meta dd {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.6;
  color: var(--ink-900);
  overflow-wrap: anywhere;
}

.page-contact .addr-meta a {
  color: var(--ink-900);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-contact .addr-meta a:hover {
  color: #b8331a;
}

/* ---------- 自助入口 ---------- */
.page-contact .guide {
  padding: var(--pc-pad) 0 clamp(28px, 5vw, 48px);
}

.page-contact .guide .section-title {
  margin-bottom: clamp(16px, 3vw, 24px);
}

.page-contact .guide-grid {
  display: grid;
  gap: 12px;
}

.page-contact .guide-link {
  display: block;
  padding: 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: var(--ink-800);
  text-decoration: none;
  transition: border-color 180ms ease, transform 180ms ease;
}

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

.page-contact .guide-link span {
  display: block;
  font-family: var(--font-label);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--mist);
  margin-bottom: 6px;
}

.page-contact .guide-link strong {
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

/* ---------- 固定反馈入口 ---------- */
.page-contact .quick-ping {
  position: fixed;
  right: 14px;
  bottom: 14px;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--flame);
  color: var(--ink-900);
  font-family: var(--font-label);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  box-shadow: 0 10px 26px rgba(7, 19, 43, 0.55);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.page-contact .quick-ping:hover,
.page-contact .quick-ping:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(255, 90, 54, 0.32);
}

.page-contact .quick-ping-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink-900);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .scenario-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  }

  .page-contact .channels {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .page-contact .coop {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

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

  .page-contact .quick-ping {
    right: 22px;
    bottom: 22px;
  }
}

@media (min-width: 1000px) {
  .page-contact .guide-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-line,
  .page-contact .channel-value,
  .page-contact .scenario-card,
  .page-contact .guide-link,
  .page-contact .quick-ping {
    transition: none;
  }

  .page-contact .guide-link:hover,
  .page-contact .quick-ping:hover {
    transform: none;
  }
}
<<<END>>>