.page-contact {
  --pc-shell-pad: 20px;
  --pc-radius: 4px;
  background: var(--abyss-950);
  color: var(--text);
  overflow-x: clip;
}

.page-contact .shell {
  padding-left: var(--pc-shell-pad);
  padding-right: var(--pc-shell-pad);
}

/* ---------- 首屏 ---------- */
.page-contact__hero {
  position: relative;
  padding: calc(var(--header-h) + 40px) 0 56px;
  background: var(--abyss-950);
  overflow: hidden;
}

.page-contact__hero-mesh {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(27, 49, 73, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 49, 73, 0.55) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.45;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.2) 70%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.2) 70%, transparent 100%);
}

.page-contact__hero::after {
  content: "";
  position: absolute;
  top: -18%;
  right: -26%;
  width: min(880px, 108%);
  height: 560px;
  pointer-events: none;
  background:
    linear-gradient(140deg, rgba(31, 224, 206, 0.2) 0%, rgba(240, 71, 142, 0.14) 52%, rgba(255, 162, 43, 0) 82%);
  clip-path: polygon(22% 0, 100% 0, 100% 74%, 0 100%);
}

.page-contact__hero-inner {
  position: relative;
  z-index: 1;
}

.page-contact__hero .breadcrumbs__list {
  color: var(--muted);
}

.page-contact__hero .breadcrumbs a {
  color: var(--fog-300);
  text-decoration: none;
}

.page-contact__hero .breadcrumbs a:hover,
.page-contact__hero .breadcrumbs a:focus-visible {
  color: var(--aqua);
}

.page-contact__hero-cols {
  display: grid;
  gap: 36px;
  margin-top: 28px;
}

.page-contact .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--aqua);
  margin: 0 0 14px;
}

.page-contact .display {
  font-size: clamp(2.15rem, 6.2vw, 4.4rem);
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0;
}

.page-contact__hero-copy .lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--fog-300);
}

.page-contact__hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-contact .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--pc-radius);
  text-decoration: none;
  transition: transform 220ms var(--ease), box-shadow 220ms var(--ease), background-color 220ms var(--ease);
}

.page-contact .btn--primary {
  background: var(--amber);
  color: var(--abyss-950);
  border: 2px solid var(--amber);
  box-shadow: 6px 6px 0 rgba(255, 162, 43, 0.22);
}

.page-contact .btn--ghost {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--abyss-650);
}

.page-contact .btn:hover,
.page-contact .btn:focus-visible {
  transform: translate(-2px, -2px);
}

.page-contact .btn--ghost:hover,
.page-contact .btn--ghost:focus-visible {
  border-color: var(--aqua);
  color: var(--aqua);
}

.page-contact__hero-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--abyss-650);
  border: 2px solid var(--abyss-650);
}

.page-contact__hero-stats li {
  background: var(--abyss-800);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-contact__stat-num {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  line-height: 1;
  font-weight: 700;
  color: var(--amber);
}

.page-contact__hero-stats li:nth-child(2) .page-contact__stat-num { color: var(--aqua); }
.page-contact__hero-stats li:nth-child(3) .page-contact__stat-num { color: var(--magenta); }
.page-contact__hero-stats li:nth-child(4) .page-contact__stat-num { color: var(--fog-050); }

.page-contact__stat-label {
  font-size: 0.76rem;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 区带通用 ---------- */
.page-contact__band {
  padding: 56px 0;
  border-top: 2px solid var(--abyss-650);
}

.page-contact__band--dark {
  background: var(--abyss-950);
  color: var(--text);
}

.page-contact__band--light {
  background: var(--fog-050);
  color: var(--ink);
  border-top-color: var(--fog-050);
}

.page-contact__head {
  max-width: 44rem;
  margin-bottom: 28px;
}

.page-contact__head h2 {
  font-size: clamp(1.6rem, 4.4vw, 2.5rem);
  line-height: 1.1;
  font-weight: 800;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.page-contact__head p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact__band--light .page-contact__head p {
  color: var(--ink-soft);
}

.page-contact__band--light .eyebrow {
  color: var(--magenta);
}

/* ---------- 四类方向 ---------- */
.page-contact__tracks {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact__track {
  position: relative;
  background: var(--abyss-800);
  border: 2px solid var(--abyss-650);
  border-radius: var(--pc-radius);
  padding: 22px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}

.page-contact__track:hover {
  border-color: var(--card-accent, var(--aqua));
  transform: translateY(-3px);
}

.page-contact__track[data-accent="amber"] { --card-accent: var(--amber); }
.page-contact__track[data-accent="aqua"] { --card-accent: var(--aqua); }
.page-contact__track[data-accent="magenta"] { --card-accent: var(--magenta); }

.page-contact__track:nth-child(4) {
  box-shadow: var(--shadow-hard);
}

.page-contact .chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 9px;
  border-radius: 3px;
  border: 2px solid currentColor;
  background: transparent;
}

.page-contact .chip--amber { color: var(--amber); }
.page-contact .chip--aqua { color: var(--aqua); }
.page-contact .chip--magenta { color: var(--magenta); }

.page-contact__track-top {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-contact__track h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 800;
  line-height: 1.2;
}

.page-contact__track-fit {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--card-accent);
}

.page-contact__track p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--fog-300);
}

.page-contact__track-link {
  margin-top: auto;
  padding-top: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--card-accent);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  align-self: flex-start;
  transition: border-color 200ms var(--ease);
}

.page-contact__track-link:hover,
.page-contact__track-link:focus-visible {
  border-bottom-color: var(--card-accent);
}

/* ---------- 流程图 ---------- */
.page-contact__figure {
  margin: 0 0 32px;
  border: 2px solid var(--abyss-650);
  border-radius: var(--pc-radius);
  overflow: hidden;
  background: var(--abyss-800);
}

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

.page-contact__figure figcaption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 12px 16px;
  border-top: 2px solid var(--abyss-650);
  color: var(--fog-300);
}

/* ---------- 时间线 + 侧卡 ---------- */
.page-contact__flow {
  display: grid;
  gap: 32px;
}

.page-contact__timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 42px;
  position: relative;
}

.page-contact__timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 12px;
  bottom: 18px;
  width: 4px;
  background: linear-gradient(to bottom, var(--amber) 0%, var(--aqua) 42%, var(--magenta) 78%, var(--abyss-650) 100%);
}

.page-contact__step {
  position: relative;
  padding-bottom: 30px;
}

.page-contact__step:last-child {
  padding-bottom: 0;
}

.page-contact__node {
  position: absolute;
  left: -42px;
  top: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: 50%;
  border: 2px solid var(--abyss-650);
  background: var(--fog-050);
  color: var(--ink);
}

.page-contact__step[data-accent="amber"] .page-contact__node {
  border-color: var(--amber);
  color: var(--abyss-950);
  background: var(--amber);
}

.page-contact__step[data-accent="aqua"] .page-contact__node {
  border-color: var(--aqua);
  color: var(--abyss-950);
  background: var(--aqua);
}

.page-contact__step[data-accent="magenta"] .page-contact__node {
  border-color: var(--magenta);
  color: #ffffff;
  background: var(--magenta);
}

.page-contact__step h3 {
  margin: 0 0 8px;
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink);
}

.page-contact__step p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-contact__step details {
  margin-top: 12px;
}

.page-contact__step summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--abyss-800);
  border-bottom: 2px solid var(--fog-300);
  padding-bottom: 3px;
}

.page-contact__step summary::-webkit-details-marker {
  display: none;
}

.page-contact__step summary::before {
  content: "+";
  font-size: 0.95rem;
  line-height: 1;
  color: var(--magenta);
}

.page-contact__step details[open] summary::before {
  content: "−";
}

.page-contact__step details ul {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact__step details li {
  position: relative;
  padding-left: 18px;
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--ink-soft);
}

.page-contact__step details li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  background: var(--aqua);
}

/* 侧卡 */
.page-contact__side {
  display: grid;
  gap: 14px;
}

.page-contact__side-card {
  background: var(--abyss-950);
  color: var(--text);
  border: 2px solid var(--abyss-650);
  border-radius: var(--pc-radius);
  padding: 20px;
}

.page-contact__side-card--b {
  border-color: var(--amber);
  box-shadow: 8px 8px 0 rgba(255, 162, 43, 0.18);
}

.page-contact__side-kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aqua);
}

.page-contact__side-big {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 2.6rem;
  line-height: 1;
  font-weight: 700;
  color: var(--amber);
}

.page-contact__side-big span {
  display: block;
  margin-top: 8px;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--fog-300);
}

.page-contact__side-note,
.page-contact__side-text {
  margin: 12px 0 0;
  font-size: 0.84rem;
  line-height: 1.72;
  color: var(--fog-300);
}

.page-contact__side-text strong {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}

.page-contact__side-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--aqua);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.page-contact__side-link:hover,
.page-contact__side-link:focus-visible {
  border-bottom-color: var(--aqua);
}

/* ---------- 排期刻度 ---------- */
.page-contact__scale {
  margin-top: 36px;
  padding: 20px;
  border: 2px solid var(--abyss-650);
  border-radius: var(--pc-radius);
  background: var(--abyss-800);
  color: var(--text);
}

.page-contact__scale-cap {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--fog-300);
}

.page-contact__scale-track {
  display: grid;
  grid-template-columns: 1fr 3fr 5fr 2fr;
  height: 16px;
  border: 2px solid var(--abyss-650);
  overflow: hidden;
}

.page-contact__scale-track span[data-step="a"] { background: var(--amber); }
.page-contact__scale-track span[data-step="b"] { background: var(--aqua); }
.page-contact__scale-track span[data-step="c"] { background: var(--magenta); }
.page-contact__scale-track span[data-step="d"] { background: var(--fog-300); }

.page-contact__scale-labels {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--fog-300);
}

.page-contact__scale-day {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--amber);
  letter-spacing: 0.05em;
}

/* ---------- 对接渠道 ---------- */
.page-contact__channels {
  display: grid;
  gap: 26px;
}

.page-contact__channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact__channel {
  border: 2px solid var(--abyss-650);
  border-left-width: 6px;
  border-radius: var(--pc-radius);
  background: var(--abyss-800);
  padding: 18px 18px 18px 16px;
}

.page-contact__channel[data-accent="amber"] { border-left-color: var(--amber); }
.page-contact__channel[data-accent="aqua"] { border-left-color: var(--aqua); }
.page-contact__channel[data-accent="magenta"] { border-left-color: var(--magenta); }

.page-contact__channel-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}

.page-contact__channel-value {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  word-break: break-word;
}

.page-contact__channel p:last-child {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--fog-300);
}

.page-contact__channel-figure {
  margin: 0;
  border: 2px solid var(--abyss-650);
  border-radius: var(--pc-radius);
  overflow: hidden;
  background: var(--abyss-800);
  box-shadow: var(--shadow-hard);
}

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

.page-contact__channel-figure figcaption {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  padding: 12px 16px;
  border-top: 2px solid var(--abyss-650);
  color: var(--muted);
}

/* ---------- 材料清单 ---------- */
.page-contact__checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--fog-300);
  border: 2px solid var(--ink);
}

.page-contact__check {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 16px;
  background: var(--fog-050);
  align-items: start;
}

.page-contact__check-num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 3px;
  padding: 4px 0;
  text-align: center;
  background: var(--amber);
}

.page-contact__check:nth-child(2) .page-contact__check-num { background: var(--aqua); }
.page-contact__check:nth-child(3) .page-contact__check-num { background: var(--magenta); color: #ffffff; border-color: var(--magenta); }
.page-contact__check:nth-child(4) .page-contact__check-num { background: var(--fog-300); }

.page-contact__check-body h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 800;
  color: var(--ink);
}

.page-contact__check-body p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

/* ---------- 合作之后 + 收尾 ---------- */
.page-contact__after {
  display: grid;
  gap: 14px;
  margin-bottom: 34px;
}

.page-contact__after-card {
  border: 2px solid var(--abyss-650);
  border-radius: var(--pc-radius);
  background: var(--abyss-800);
  padding: 20px;
}

.page-contact__after-num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--aqua);
}

.page-contact__after-card h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--text);
}

.page-contact__after-card p:last-child {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.75;
  color: var(--fog-300);
}

.page-contact__closing {
  display: grid;
  gap: 22px;
  padding: 24px 20px;
  border: 2px solid var(--abyss-650);
  border-radius: var(--pc-radius);
  background:
    linear-gradient(135deg, rgba(31, 224, 206, 0.1) 0%, rgba(255, 162, 43, 0.08) 100%),
    var(--abyss-800);
}

.page-contact__closing-main h2 {
  margin: 0 0 10px;
  font-size: clamp(1.35rem, 3.6vw, 1.9rem);
  line-height: 1.2;
  font-weight: 800;
}

.page-contact__closing-main p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--fog-300);
  word-break: break-word;
}

.page-contact__closing-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-contact__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.page-contact__links a {
  font-size: 0.85rem;
  color: var(--text);
  text-decoration: none;
  border-bottom: 2px solid var(--abyss-650);
  padding-bottom: 2px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact__links a:hover,
.page-contact__links a:focus-visible {
  color: var(--aqua);
  border-bottom-color: var(--aqua);
}

/* ---------- 滚动显现 ---------- */
.page-contact [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}

.page-contact [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

.page-contact :focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .page-contact [data-reveal] {
    opacity: 1;
    transform: none;
    transition: opacity 200ms linear;
  }
  .page-contact .btn,
  .page-contact__track {
    transition: none;
  }
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-contact {
    --pc-shell-pad: 36px;
  }

  .page-contact__band {
    padding: 76px 0;
  }

  .page-contact__hero {
    padding: calc(var(--header-h) + 64px) 0 76px;
  }

  .page-contact__hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact__tracks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact__scale-labels {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-contact__check {
    grid-template-columns: 56px minmax(0, 1fr);
    padding: 22px 22px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-contact {
    --pc-shell-pad: 48px;
  }

  .page-contact__hero-cols {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.85fr);
    align-items: end;
    gap: 48px;
    margin-top: 40px;
  }

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

  .page-contact__flow {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.85fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact__side {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    padding-right: 14px;
  }

  .page-contact__side-card--a {
    transform: rotate(-1.4deg);
    margin-right: 26px;
  }

  .page-contact__side-card--b {
    margin-top: -10px;
    margin-left: 30px;
    transform: rotate(1.1deg);
  }

  .page-contact__channels {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 40px;
    align-items: start;
  }

  .page-contact__channel-figure {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    margin-top: 40px;
  }

  .page-contact__closing {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr);
    align-items: start;
    padding: 32px 30px;
    gap: 32px;
  }
}
<<<END>>>