.page-contact {
  --ct-side: 348px;
  --ct-gap: clamp(28px, 4vw, 52px);
  color: var(--text-primary);
  background:
    radial-gradient(1080px 520px at 10% -12%, rgba(53, 242, 192, 0.10), transparent 62%),
    radial-gradient(760px 420px at 94% 2%, rgba(255, 184, 77, 0.07), transparent 60%),
    var(--ink-950);
  padding-block: clamp(26px, 4vw, 56px) clamp(48px, 7vw, 96px);
}

.page-contact .ct-wrap {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(16px, 3.6vw, 56px);
}

.page-contact a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 192, 0.32);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact a:hover,
.page-contact a:focus-visible {
  color: var(--cyan-200);
  border-bottom-color: var(--cyan-400);
}

.page-contact a:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-contact .ct-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ct-gap);
}

.page-contact .ct-main {
  min-width: 0;
  display: grid;
  gap: clamp(34px, 5vw, 64px);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  display: grid;
  gap: 16px;
}

.page-contact .ct-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6.6vw, 3.7rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
}

.page-contact .ct-lede {
  margin: 0;
  max-width: 56ch;
  color: var(--text-secondary);
  font-size: clamp(0.98rem, 1.7vw, 1.1rem);
  line-height: 1.75;
}

.page-contact .ct-chips {
  list-style: none;
  margin: 2px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .ct-hero-figure {
  margin: clamp(8px, 1.8vw, 16px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-900);
}

.page-contact .ct-hero-figure img,
.page-contact .ct-map img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
}

/* ---------- 章节头 ---------- */
.page-contact .ct-sec {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-contact .ct-sec-head {
  display: grid;
  gap: 10px;
  padding-top: clamp(16px, 2.2vw, 24px);
  border-top: 1px solid var(--line);
}

.page-contact .ct-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-contact .ct-sec-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.42rem, 3.6vw, 2.25rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.page-contact .ct-sec-head p {
  margin: 0;
  max-width: 58ch;
  color: var(--text-secondary);
  font-size: 0.97rem;
  line-height: 1.72;
}

/* ---------- 技能树 ---------- */
.page-contact .ct-tree {
  position: relative;
  display: grid;
  gap: 12px;
  padding-left: 30px;
}

.page-contact .ct-tree::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan-400), rgba(53, 242, 192, 0.22) 62%, transparent);
}

.page-contact .ct-node {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, var(--ink-900), rgba(6, 21, 18, 0.96));
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-contact .ct-node::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 27px;
  width: 22px;
  height: 2px;
  background: var(--line);
  transition: background var(--dur) var(--ease);
}

.page-contact .ct-node:hover,
.page-contact .ct-node:focus-within {
  border-color: rgba(53, 242, 192, 0.4);
}

.page-contact .ct-node:hover::before,
.page-contact .ct-node:focus-within::before {
  background: rgba(53, 242, 192, 0.6);
}

.page-contact .ct-node[open] {
  border-color: rgba(53, 242, 192, 0.48);
  box-shadow: 0 22px 46px -34px rgba(53, 242, 192, 0.7);
}

.page-contact .ct-node[open]::before {
  background: var(--cyan-400);
}

.page-contact .ct-node > summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 18px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
}

.page-contact .ct-node > summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-node > summary:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: -3px;
  border-radius: var(--radius-md);
}

.page-contact .ct-node-num {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(53, 242, 192, 0.45);
  border-radius: 9px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--cyan-400);
  background: rgba(53, 242, 192, 0.06);
}

.page-contact .ct-node-head {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.page-contact .ct-node-title {
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}

.page-contact .ct-node-sub {
  color: var(--text-secondary);
  font-size: 0.83rem;
  line-height: 1.5;
}

.page-contact .ct-node-cue {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-contact .ct-node-cue::before,
.page-contact .ct-node-cue::after {
  content: "";
  position: absolute;
  background: var(--cyan-400);
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-contact .ct-node-cue::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-contact .ct-node-cue::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-contact .ct-node[open] .ct-node-cue::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-contact .ct-node-body {
  padding: 14px 18px 18px;
  border-top: 1px dashed rgba(42, 74, 65, 0.9);
  display: grid;
  gap: 12px;
}

.page-contact .ct-node-body p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.72;
}

.page-contact .ct-prep {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .ct-prep li {
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(53, 242, 192, 0.06);
  color: var(--cyan-200);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.03em;
  line-height: 1.5;
}

.page-contact .ct-map {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-900);
}

/* ---------- 接入流程 ---------- */
.page-contact .ct-steps {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-contact .ct-steps::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 24px;
  bottom: 24px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(53, 242, 192, 0.65), rgba(255, 184, 77, 0.45));
}

.page-contact .ct-step {
  position: relative;
  padding-left: 62px;
}

.page-contact .ct-step-num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(53, 242, 192, 0.5);
  background: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--cyan-400);
}

.page-contact .ct-step h3 {
  margin: 6px 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.06rem;
  letter-spacing: -0.015em;
  line-height: 1.2;
}

.page-contact .ct-step p {
  margin: 0;
  max-width: 60ch;
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.72;
}

/* ---------- 服务时间 ---------- */
.page-contact .ct-hours {
  display: grid;
  gap: 14px;
}

.page-contact .ct-box {
  padding: clamp(16px, 2.4vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, var(--ink-800), var(--ink-900));
}

.page-contact .ct-box-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.page-contact .ct-box p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.93rem;
  line-height: 1.72;
}

.page-contact .ct-hint {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid rgba(255, 184, 77, 0.6);
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.72;
}

/* ---------- 信息使用 ---------- */
.page-contact .ct-privacy {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(18, 48, 41, 0.6);
}

.page-contact .ct-privacy p {
  margin: 0;
  max-width: 62ch;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
}

/* ---------- 侧栏 ---------- */
.page-contact .ct-side {
  display: grid;
  gap: 16px;
  align-content: start;
  min-width: 0;
}

.page-contact .ct-card {
  display: grid;
  gap: 14px;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(420px 200px at 110% -20%, rgba(53, 242, 192, 0.16), transparent 68%),
    linear-gradient(165deg, rgba(18, 48, 41, 0.95), rgba(6, 21, 18, 0.98));
}

.page-contact .ct-card .eyebrow {
  margin: 0;
}

.page-contact .ct-card-status {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--cyan-200);
}

.page-contact .ct-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 4px rgba(53, 242, 192, 0.16);
  animation: ct-pulse 2.6s var(--ease) infinite;
}

@keyframes ct-pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(53, 242, 192, 0.16); }
  50% { box-shadow: 0 0 0 8px rgba(53, 242, 192, 0.05); }
}

.page-contact .ct-contact-list {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-contact .ct-contact-list > div {
  display: grid;
  gap: 4px;
}

.page-contact .ct-contact-list dt {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.page-contact .ct-contact-list dd {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-contact .ct-card-note {
  margin: 0;
  padding-top: 13px;
  border-top: 1px solid var(--line);
  color: var(--text-secondary);
  font-size: 0.83rem;
  line-height: 1.68;
}

.page-contact .ct-card--quiet {
  background: linear-gradient(165deg, rgba(11, 33, 28, 0.94), rgba(6, 21, 18, 0.98));
}

.page-contact .ct-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .ct-links li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 12px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(42, 74, 65, 0.9);
}

.page-contact .ct-links li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .ct-links a {
  font-weight: 600;
  font-size: 0.94rem;
}

.page-contact .ct-links span {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

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

  .page-contact .ct-step {
    padding-left: 74px;
  }

  .page-contact .ct-steps::before {
    left: 22px;
  }
}

@media (min-width: 1000px) {
  .page-contact .ct-layout {
    grid-template-columns: minmax(0, 1fr) var(--ct-side);
    align-items: start;
  }

  .page-contact .ct-side {
    position: sticky;
    top: 24px;
  }

  .page-contact .ct-hero-figure {
    max-width: 100%;
  }

  .page-contact .ct-node > summary {
    padding: 20px 22px;
  }

  .page-contact .ct-node-body {
    padding: 16px 22px 22px;
  }
}

@media (min-width: 1240px) {
  .page-contact .ct-tree {
    padding-left: 36px;
  }

  .page-contact .ct-node::before {
    left: -36px;
    width: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-dot {
    animation: none;
  }

  .page-contact .ct-node,
  .page-contact .ct-node::before,
  .page-contact .ct-node-cue::before,
  .page-contact .ct-node-cue::after,
  .page-contact a {
    transition: none;
  }
}
<<<END>>>