.page-contact {
  --cc-gap: clamp(18px, 3vw, 30px);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  background: var(--ink);
  color: var(--warmwhite);
  padding-top: clamp(20px, 4vw, 38px);
}

.page-contact .contact-hero .shell {
  position: relative;
  z-index: 1;
  padding-bottom: clamp(24px, 4.5vw, 44px);
}

.page-contact .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(18px, 3vw, 30px);
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
}

.page-contact .breadcrumb-item {
  color: rgba(255, 249, 238, .55);
}

.page-contact .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: rgba(168, 224, 95, .75);
}

.page-contact .breadcrumb-link {
  color: var(--kiwi);
  text-decoration: none;
}

.page-contact .breadcrumb-link:hover,
.page-contact .breadcrumb-link:focus-visible {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .hero-eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lemon);
}

.page-contact .hero-title {
  margin: 0 0 18px;
  max-width: 16em;
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(32px, 7.6vw, 64px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--warmwhite);
}

.page-contact .hero-title em {
  font-style: italic;
  color: var(--kiwi);
}

.page-contact .hero-lead {
  margin: 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.75;
  color: rgba(255, 249, 238, .82);
}

.page-contact .hero-visual {
  position: relative;
  margin: 0;
  line-height: 0;
}

.page-contact .hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 35, 28, .5), rgba(11, 35, 28, 0) 42%, rgba(11, 35, 28, .38));
  pointer-events: none;
}

.page-contact .hero-visual img {
  display: block;
  width: 100%;
  height: clamp(170px, 28vw, 300px);
  object-fit: cover;
}

/* ---------- 联系信息与沟通主题 ---------- */
.page-contact .contact-body {
  background: var(--paper);
  color: var(--black);
  padding: clamp(32px, 6vw, 76px) 0;
}

.page-contact .contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cc-gap);
  align-items: start;
}

.page-contact .contact-card {
  position: relative;
  overflow: hidden;
  background: var(--midnight);
  color: var(--warmwhite);
  border: 1px solid var(--line-light);
  border-radius: var(--r-lg);
  padding: clamp(22px, 3.4vw, 34px);
  box-shadow: 0 28px 54px -36px rgba(11, 35, 28, .85);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  top: -30px;
  right: -30px;
  width: 150px;
  height: 150px;
  background: radial-gradient(circle at 70% 30%, rgba(31, 191, 117, .38), transparent 70%);
  pointer-events: none;
}

.page-contact .contact-card .card-kicker {
  position: relative;
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--kiwi);
}

.page-contact .contact-card-title {
  position: relative;
  margin: 0 0 clamp(18px, 3vw, 26px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 28px);
  line-height: 1.2;
  color: var(--warmwhite);
}

.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .channel {
  padding-top: 16px;
  border-top: 1px solid var(--line-light);
}

.page-contact .channel-label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--kiwi);
}

.page-contact .channel-value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  line-height: 1.3;
  color: var(--warmwhite);
  overflow-wrap: anywhere;
}

.page-contact .channel-value--mail {
  font-size: clamp(16px, 4.4vw, 24px);
  letter-spacing: -.01em;
}

.page-contact .channel-value--phone {
  font-size: clamp(28px, 8vw, 40px);
  letter-spacing: .01em;
  color: var(--lemon);
}

.page-contact .channel-value--addr {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: clamp(13px, 1.6vw, 15px);
  line-height: 1.7;
  color: rgba(255, 249, 238, .84);
}

.page-contact .channel-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.page-contact .copy-btn {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
}

.page-contact .card-note {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(255, 249, 238, .07);
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(255, 249, 238, .8);
}

.page-contact .card-checklist h3 {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--kiwi);
}

.page-contact .checklist {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .checklist label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.55;
  color: rgba(255, 249, 238, .8);
  cursor: pointer;
}

.page-contact .checklist input {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin: 2px 0 0;
  accent-color: var(--kiwi);
}

/* 主题技能树 */
.page-contact .topic-panel {
  position: relative;
}

.page-contact .panel-head {
  margin-bottom: clamp(14px, 2.4vw, 20px);
}

.page-contact .panel-eyebrow {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--brand);
}

.page-contact .panel-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 4vw, 33px);
  line-height: 1.16;
  color: var(--ink);
}

.page-contact .panel-sub {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.75;
  color: #3d4b44;
}

.page-contact .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(14px, 2.4vw, 20px) 0 6px;
}

.page-contact .filter-btn {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--warmwhite);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .filter-btn:hover {
  border-color: var(--brand);
  color: var(--midnight);
}

.page-contact .filter-btn.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--warmwhite);
}

.page-contact .filter-btn:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-contact [data-filter-item].is-filtered-out {
  display: none;
}

.page-contact .tree-list {
  position: relative;
  list-style: none;
  margin: clamp(14px, 2.4vw, 20px) 0 0;
  padding: 0;
}

.page-contact .tree-list::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 34px;
  bottom: 34px;
  width: 1px;
  background: var(--line);
}

.page-contact .tree-item {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--line);
}

.page-contact .tree-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .tree-node {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--warmwhite);
  color: var(--ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
}

.page-contact .tree-item:nth-child(1) .tree-node { background: var(--lemon); }
.page-contact .tree-item:nth-child(2) .tree-node { background: var(--kiwi); }
.page-contact .tree-item:nth-child(3) .tree-node { background: var(--brand); color: var(--warmwhite); border-color: transparent; }
.page-contact .tree-item:nth-child(4) .tree-node { background: #ffd7cc; border-color: rgba(255, 90, 54, .35); }
.page-contact .tree-item:nth-child(5) .tree-node { background: #e3d6ff; border-color: rgba(139, 77, 255, .3); }

.page-contact .tree-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16.5px;
  line-height: 1.3;
  color: var(--ink);
}

.page-contact .tree-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: #3d4b44;
}

.page-contact .tree-goal {
  display: inline-block;
  margin: 10px 0 0;
  padding: 5px 11px;
  border-radius: var(--r-pill);
  background: var(--bench);
  color: var(--midnight);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .02em;
}

.page-contact .tree-goal a {
  color: var(--midnight);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 反馈路径 ---------- */
.page-contact .path-section {
  background: var(--ink);
  color: var(--warmwhite);
  padding: clamp(38px, 6.5vw, 78px) 0;
}

.page-contact .path-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cc-gap);
  align-items: center;
}

.page-contact .path-eyebrow {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-contact .path-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, 38px);
  line-height: 1.14;
  color: var(--warmwhite);
}

.page-contact .path-steps {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .path-step {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 15px 16px;
  border: 1px solid var(--line-light);
  border-radius: var(--r-md);
  background: rgba(255, 249, 238, .045);
}

.page-contact .path-step-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  color: var(--lemon);
}

.page-contact .path-step h3 {
  margin: 0 0 5px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.35;
  color: var(--warmwhite);
}

.page-contact .path-step p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(255, 249, 238, .72);
}

.page-contact .path-figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-light);
  border-radius: var(--r-lg);
  line-height: 0;
  box-shadow: 0 30px 60px -40px rgba(0, 0, 0, .8);
}

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

/* ---------- 渠道说明 ---------- */
.page-contact .notes-section {
  background: var(--paper);
  color: var(--black);
  padding: clamp(34px, 6vw, 74px) 0;
}

.page-contact .notes-eyebrow {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--brand);
}

.page-contact .notes-title {
  margin: 0 0 clamp(18px, 3vw, 26px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 4vw, 34px);
  line-height: 1.16;
  color: var(--ink);
}

.page-contact .notes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .note-card {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--warmwhite);
}

.page-contact .note-card--accent {
  background: linear-gradient(155deg, rgba(168, 224, 95, .34), rgba(243, 235, 221, .55) 70%);
  border-color: rgba(31, 191, 117, .32);
}

.page-contact .note-tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--midnight);
}

.page-contact .note-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.32;
  color: var(--ink);
}

.page-contact .note-card p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: #3d4b44;
}

/* ---------- 备案条 ---------- */
.page-contact .legal-strip {
  background: var(--bench);
  color: var(--ink);
  padding: clamp(28px, 4.5vw, 52px) 0;
  border-top: 1px solid rgba(11, 35, 28, .1);
}

.page-contact .legal-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 3vw, 28px);
  align-items: center;
}

.page-contact .legal-kicker {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--midnight);
}

.page-contact .legal-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(17px, 2.6vw, 22px);
  letter-spacing: .02em;
  color: var(--ink);
}

.page-contact .legal-text {
  margin: 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.75;
  color: #3d4b44;
}

.page-contact .legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .notes-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-grid {
    grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
    gap: clamp(24px, 4vw, 48px);
  }

  .page-contact .path-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(26px, 4vw, 52px);
  }

  .page-contact .legal-inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  }

  .page-contact .legal-links {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .filter-btn {
    transition: none;
  }
}
<<<END>>>