.page-contact {
  --pc-rule: rgba(14, 27, 61, .13);
  --pc-gold-wash: rgba(200, 154, 75, .08);
  --pc-desc: rgba(14, 27, 61, .70);

  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
  padding-bottom: clamp(40px, 7vw, 80px);
}

.page-contact .mono {
  font-family: var(--font-mono);
  letter-spacing: .04em;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 34px) 0 clamp(30px, 5vw, 54px);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -90px;
  right: -110px;
  width: clamp(240px, 50vw, 480px);
  height: clamp(240px, 50vw, 480px);
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, rgba(200, 154, 75, .22) 0 24%, transparent 25%),
    repeating-radial-gradient(circle at 50% 50%, rgba(14, 27, 61, .10) 0 1px, transparent 1px 24px);
  opacity: .8;
  pointer-events: none;
}

.page-contact .contact-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumb {
  margin-bottom: clamp(16px, 3vw, 26px);
}

.page-contact .hero-kicker {
  margin: 0 0 14px;
  font-size: 12px;
  color: var(--slate);
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-contact .hero-kicker::before {
  content: "";
  display: block;
  width: 30px;
  height: 2px;
  background: var(--gold);
  flex: 0 0 auto;
}

.page-contact .hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 6.6vw, 58px);
  line-height: 1.14;
  letter-spacing: -.02em;
  max-width: 20ch;
}

.page-contact .hero-lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-family: var(--font-serif);
  font-size: clamp(15.5px, 2vw, 18px);
  line-height: 1.85;
  color: var(--ink-78);
}

.page-contact .hero-marks {
  list-style: none;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--slate);
}

.page-contact .hero-marks li {
  display: flex;
  align-items: center;
  gap: 9px;
}

.page-contact .hero-marks li::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: var(--gold);
  transform: rotate(45deg);
}

/* ---------- 三条通道 ---------- */
.page-contact .channel-band {
  padding: clamp(32px, 6vw, 62px) 0 clamp(18px, 3vw, 30px);
}

.page-contact .band-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-contact .band-note {
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: 14.5px;
  color: var(--pc-desc);
  max-width: 54ch;
}

.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--pc-rule);
}

.page-contact .channel-row {
  border-bottom: 1px solid var(--pc-rule);
}

.page-contact .channel-link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) 18px;
  gap: 6px 12px;
  align-items: start;
  padding: 18px 8px;
  color: var(--ink);
  text-decoration: none;
  transition: background-color .22s ease, padding-left .22s ease;
}

.page-contact .channel-link:hover,
.page-contact .channel-link:focus-visible {
  background-color: var(--pc-gold-wash);
  padding-left: 16px;
}

.page-contact .channel-link:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
}

.page-contact .channel-no {
  font-size: 12px;
  line-height: 1.9;
  color: var(--gold);
}

.page-contact .channel-body {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.page-contact .channel-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
}

.page-contact .channel-desc {
  font-size: 14px;
  line-height: 1.72;
  color: var(--pc-desc);
  max-width: 68ch;
}

.page-contact .channel-go {
  justify-self: end;
  font-size: 16px;
  line-height: 1.9;
  color: var(--gold);
  transition: transform .22s ease, color .22s ease;
}

.page-contact .channel-link:hover .channel-go {
  transform: translateX(4px);
  color: var(--clay);
}

/* ---------- 反馈表单 ---------- */
.page-contact .feedback-zone {
  padding: clamp(30px, 6vw, 68px) 0 clamp(34px, 6vw, 70px);
}

.page-contact .feedback-inner {
  max-width: 720px;
  margin-inline: auto;
}

.page-contact .feedback-form {
  margin-top: clamp(20px, 3vw, 30px);
  padding: clamp(20px, 4vw, 36px);
  background: var(--paper-light);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-soft);
  box-shadow: var(--shadow-panel);
}

.page-contact .field {
  margin-bottom: 22px;
}

.page-contact .field-label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink-66);
}

.page-contact .field-input {
  display: block;
  width: 100%;
  box-sizing: border-box;
  border: 0;
  border-bottom: 1px solid var(--hairline);
  border-radius: 0;
  background: transparent;
  padding: 9px 2px;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  transition: border-color .2s ease, box-shadow .2s ease;
}

.page-contact .field-input::placeholder {
  color: rgba(107, 122, 153, .78);
}

.page-contact .field-input:focus {
  outline: none;
  border-bottom-color: var(--gold);
  box-shadow: 0 1px 0 0 var(--gold);
}

.page-contact textarea.field-input {
  min-height: 124px;
  resize: vertical;
}

.page-contact .field-select {
  appearance: none;
  padding-right: 32px;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--slate) 50%),
    linear-gradient(135deg, var(--slate) 50%, transparent 50%);
  background-position:
    calc(100% - 15px) calc(50% + 1px),
    calc(100% - 9px) calc(50% + 1px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.page-contact .form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px dashed var(--pc-rule);
}

.page-contact .form-actions .btn {
  font-family: var(--font-sans);
  font-size: 14.5px;
}

.page-contact .form-hint {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 流程 ---------- */
.page-contact .process-wrap {
  margin-top: clamp(26px, 4vw, 40px);
  display: grid;
  gap: 22px;
}

.page-contact .flow-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-soft);
  border: 1px solid var(--line-soft);
  object-fit: cover;
}

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

.page-contact .process-steps li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--pc-desc);
}

.page-contact .process-steps .mono {
  font-size: 12px;
  line-height: 1.9;
  color: var(--teal);
}

/* ---------- 答复节奏 ---------- */
.page-contact .response-zone {
  padding: clamp(34px, 6vw, 68px) 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(251, 246, 236, .85) 100%);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .scale {
  margin-top: clamp(24px, 4vw, 36px);
}

.page-contact .scale-track {
  position: relative;
  height: 10px;
  margin-bottom: 28px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(14, 27, 61, .12), rgba(14, 27, 61, .24));
}

.page-contact .scale-window {
  position: absolute;
  top: -3px;
  bottom: -3px;
  left: 15.4%;
  width: 69.2%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--gold), var(--clay));
  box-shadow: 0 0 0 4px rgba(196, 85, 47, .10);
}

.page-contact .scale-ticks {
  position: relative;
  height: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .scale-ticks li {
  position: absolute;
  top: 0;
  font-size: 11px;
  color: var(--slate);
  white-space: nowrap;
  transform: translateX(-50%);
}

.page-contact .scale-ticks li:first-child {
  transform: none;
}

.page-contact .scale-ticks li:last-child {
  transform: translateX(-100%);
}

.page-contact .scale-caption {
  margin: 14px 0 0;
  font-size: 11.5px;
  color: var(--slate);
}

.page-contact .response-list {
  margin: clamp(22px, 4vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .response-item {
  padding: 14px 16px;
  border-left: 3px solid var(--gold);
  background: rgba(200, 154, 75, .07);
  border-radius: 0 var(--radius-soft) var(--radius-soft) 0;
}

.page-contact .response-item:nth-child(2) {
  border-left-color: var(--teal);
  background: rgba(46, 140, 134, .07);
}

.page-contact .response-item:nth-child(3) {
  border-left-color: var(--clay);
  background: rgba(196, 85, 47, .07);
}

.page-contact .response-item dt {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 3px;
}

.page-contact .response-item dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--pc-desc);
}

/* ---------- 描述要点 ---------- */
.page-contact .detail-zone {
  padding: clamp(34px, 6vw, 70px) 0;
}

.page-contact .detail-grid {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-contact .detail-item {
  padding: 18px 18px 20px;
  background: var(--paper-light);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-soft);
}

.page-contact .detail-no {
  display: block;
  font-size: 11.5px;
  color: var(--gold);
  margin-bottom: 8px;
}

.page-contact .detail-title-item {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
}

.page-contact .detail-item p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--pc-desc);
}

/* ---------- 深色联系区 ---------- */
.page-contact .reach-zone {
  position: relative;
  overflow: hidden;
  padding: clamp(38px, 7vw, 76px) 0;
  color: var(--paper);
  background:
    radial-gradient(circle at 84% 10%, rgba(46, 140, 134, .30), transparent 52%),
    linear-gradient(158deg, var(--ink) 0%, var(--ink-deep) 100%);
}

.page-contact .reach-texture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .16;
  mix-blend-mode: screen;
  pointer-events: none;
}

.page-contact .reach-shell {
  position: relative;
  z-index: 1;
}

.page-contact .section-head--dark .section-title {
  color: var(--paper);
}

.page-contact .section-head--dark .section-desc {
  color: var(--text-on-dark);
}

.page-contact .reach-rows {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
}

.page-contact .reach-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 14px;
  padding: 16px 2px;
  border-bottom: 1px solid var(--line-dark);
}

.page-contact .reach-row:first-child {
  border-top: 1px solid var(--line-dark);
}

.page-contact .reach-key {
  flex: 0 0 auto;
  width: 74px;
  font-size: 11.5px;
  color: var(--gold-bright);
}

.page-contact .reach-value {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .copy-btn {
  flex: 0 0 auto;
  padding: 4px 13px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--gold-bright);
  background: transparent;
  border: 1px solid rgba(232, 184, 92, .48);
  border-radius: 999px;
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

.page-contact .copy-btn:hover {
  background: rgba(232, 184, 92, .16);
  border-color: var(--gold-bright);
}

.page-contact .copy-btn:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 2px;
}

.page-contact .copy-btn[data-copied="true"] {
  background: var(--gold-bright);
  border-color: var(--gold-bright);
  color: var(--ink-deep);
}

.page-contact .reach-note {
  margin: 22px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-on-dark-dim);
  max-width: 62ch;
}

.page-contact .reach-links {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--text-on-dark-dim);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-contact .reach-links a {
  color: var(--gold-bright);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}

.page-contact .reach-links a:hover,
.page-contact .reach-links a:focus-visible {
  border-bottom-color: var(--gold-bright);
}

.page-contact .reach-sep {
  color: rgba(243, 233, 215, .34);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-contact .channel-link {
    grid-template-columns: 38px minmax(0, 1fr) 26px;
    gap: 8px 18px;
    padding: 22px 12px;
  }

  .page-contact .channel-name {
    font-size: 18px;
  }

  .page-contact .channel-desc {
    font-size: 15px;
  }

  .page-contact .process-wrap {
    grid-template-columns: 1.1fr .9fr;
    gap: 30px;
    align-items: start;
  }

  .page-contact .process-steps {
    gap: 14px;
  }
}

@media (min-width: 900px) {
  .page-contact .detail-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px 44px;
    align-items: start;
  }

  .page-contact .detail-item:first-child {
    grid-column: 1 / -1;
    padding: 22px 24px 24px;
  }

  .page-contact .detail-item:nth-child(even) {
    margin-top: 26px;
  }

  .page-contact .response-list {
    grid-template-columns: 1fr 1fr;
    gap: 14px 18px;
  }

  .page-contact .response-item:nth-child(3) {
    grid-column: 1 / -1;
  }
}

@media (max-width: 479px) {
  .page-contact .scale-ticks li:nth-child(3),
  .page-contact .scale-ticks li:nth-child(4) {
    display: none;
  }

  .page-contact .reach-key {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-link,
  .page-contact .channel-go,
  .page-contact .field-input,
  .page-contact .copy-btn,
  .page-contact .reach-links a {
    transition: none;
  }
}