.page-contact {
  --contact-danger: #C13A22;
  --contact-safe: #0E9C86;
  --grid-cell: rgba(139, 244, 247, .08);
  background: var(--paper);
  color: var(--txt);
}

.page-contact .contact-top {
  padding: 22px 0 0;
}

.page-contact .contact-intro {
  max-width: 820px;
  padding: 20px 0 42px;
}

.page-contact .contact-intro h1 {
  margin: 14px 0 16px;
  font-family: var(--font-head);
  font-size: 30px;
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-contact .contact-intro__lead {
  margin: 0;
  max-width: 720px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--txt-soft);
}

@media (min-width: 780px) {
  .page-contact .contact-intro { padding: 26px 0 54px; }
  .page-contact .contact-intro h1 { font-size: 42px; }
  .page-contact .contact-intro__lead { font-size: 17px; }
}

/* ---------- 分屏联络面板 ---------- */

.page-contact .contact-split {
  padding: 0 0 60px;
}

.page-contact .contact-split__inner {
  display: grid;
  gap: 26px;
  align-items: start;
}

@media (min-width: 940px) {
  .page-contact .contact-split__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 42px;
  }
  .page-contact .contact-split { padding: 0 0 84px; }
}

.page-contact .contact-form-col {
  background: var(--paper-3);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 24px 18px 28px;
  box-shadow: var(--shadow-1);
}

@media (min-width: 620px) {
  .page-contact .contact-form-col { padding: 32px 30px 34px; }
}

.page-contact .contact-form-col h2 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

@media (min-width: 780px) {
  .page-contact .contact-form-col h2 { font-size: 24px; }
}

.page-contact .contact-form-col__note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--txt-soft);
}

.page-contact .contact-fields {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

@media (min-width: 600px) {
  .page-contact .contact-fields { grid-template-columns: 1fr 1fr; gap: 18px 20px; }
  .page-contact .field--full { grid-column: 1 / -1; }
}

.page-contact .field {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.page-contact .field label {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--steel);
}

.page-contact .field__req {
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--slate);
  opacity: .85;
}

.page-contact .field input,
.page-contact .field select,
.page-contact .field textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--r);
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
  -webkit-appearance: none;
  appearance: none;
}

.page-contact .field select {
  background-image: linear-gradient(45deg, transparent 50%, var(--steel) 50%),
                    linear-gradient(135deg, var(--steel) 50%, transparent 50%);
  background-position: calc(100% - 20px) calc(50% + 2px), calc(100% - 14px) calc(50% + 2px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 40px;
}

.page-contact .field textarea {
  min-height: 138px;
  resize: vertical;
  line-height: 1.75;
}

.page-contact .field input::placeholder,
.page-contact .field textarea::placeholder {
  color: #97A5B1;
}

.page-contact .field input:focus,
.page-contact .field select:focus,
.page-contact .field textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 216, 230, .16);
}

.page-contact .field__error {
  display: none;
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--contact-danger);
}

.page-contact .field input:not(:placeholder-shown):invalid {
  border-color: var(--contact-danger);
  box-shadow: 0 0 0 3px rgba(193, 58, 34, .1);
}

.page-contact .field input:not(:placeholder-shown):invalid ~ .field__error {
  display: block;
}

.page-contact .topic-hints { margin: 0; }

.page-contact .topic-hint {
  display: none;
  margin: 0;
  padding: 10px 14px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--txt-soft);
  background: var(--paper-2);
  border-left: 2px solid var(--orange);
  border-radius: var(--r);
}

.page-contact .topic-hint[data-topic="channel"] { display: block; }

.page-contact .field:has(#cf-topic option:not([value="channel"]):checked) + .topic-hints .topic-hint[data-topic="channel"] {
  display: none;
}

.page-contact .field:has(#cf-topic option[value="version"]:checked) + .topic-hints .topic-hint[data-topic="version"],
.page-contact .field:has(#cf-topic option[value="doc"]:checked) + .topic-hints .topic-hint[data-topic="doc"],
.page-contact .field:has(#cf-topic option[value="cooperation"]:checked) + .topic-hints .topic-hint[data-topic="cooperation"] {
  display: block;
}

.page-contact .contact-fields__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-contact .contact-fields__actions .btn {
  min-height: 48px;
  flex: 1 1 auto;
  justify-content: center;
  text-align: center;
}

.page-contact .contact-fields__foot {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 深色渠道状态面板 ---------- */

.page-contact .contact-panel {
  position: relative;
  overflow: hidden;
  padding: 26px 20px 24px;
  color: var(--paper);
  background: linear-gradient(158deg, #0B1B2B 0%, #071426 74%);
  border-radius: var(--r);
  box-shadow: var(--shadow-2);
}

@media (min-width: 620px) {
  .page-contact .contact-panel { padding: 32px 28px 28px; }
}

.page-contact .contact-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-cell) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-cell) 1px, transparent 1px);
  background-size: 34px 34px;
  pointer-events: none;
}

.page-contact .contact-panel > * { position: relative; }

.page-contact .contact-panel__top {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-contact .contact-panel__top h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-contact .contact-panel__lead {
  margin: 12px 0 6px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--cyan-soft);
}

.page-contact .contact-channels {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}

.page-contact .contact-channel {
  display: grid;
  gap: 5px;
  padding: 16px 0;
  border-top: 1px solid var(--line-dark);
}

.page-contact .contact-channel__flag {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  padding: 2px 8px;
  color: var(--space);
  background: var(--orange);
  border-radius: var(--r);
}

.page-contact .contact-channel__flag--quiet {
  color: var(--cyan-soft);
  background: rgba(139, 244, 247, .14);
  border: 1px solid var(--line-dark);
}

.page-contact .contact-channel__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan-soft);
}

.page-contact .contact-channel__value {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .contact-channel__note {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(244, 239, 230, .66);
}

.page-contact .contact-panel__media {
  margin: 16px 0 0;
  border: 1px solid var(--line-dark);
  border-radius: var(--r);
  overflow: hidden;
  background: rgba(139, 244, 247, .05);
}

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

.page-contact .contact-panel__foot {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(244, 239, 230, .58);
}

/* ---------- 电话与地址 ---------- */

.page-contact .contact-direct {
  padding: 52px 0 56px;
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

@media (min-width: 780px) {
  .page-contact .contact-direct { padding: 70px 0 76px; }
}

.page-contact .contact-direct__head { max-width: 720px; }

.page-contact .contact-direct__head h2 {
  margin: 12px 0 12px;
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

@media (min-width: 780px) {
  .page-contact .contact-direct__head h2 { font-size: 30px; }
}

.page-contact .contact-direct__lead {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--txt-soft);
}

.page-contact .contact-direct__grid {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

@media (min-width: 720px) {
  .page-contact .contact-direct__grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .page-contact .contact-card--wide { grid-column: 1 / -1; }
}

.page-contact .contact-card {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 22px 20px 24px;
  background: var(--paper-3);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-1);
}

.page-contact .contact-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--slate);
}

.page-contact .contact-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: .01em;
  line-height: 1.35;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .contact-card__value--mail { font-size: 17px; }

.page-contact .contact-card__value--addr {
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.7;
}

.page-contact .contact-card__meta {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--txt-soft);
}

.page-contact .hours {
  display: grid;
  gap: 6px;
}

.page-contact .hours__track {
  position: relative;
  height: 6px;
  background: rgba(11, 27, 43, .1);
  border-radius: 999px;
  overflow: hidden;
}

.page-contact .hours__fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  width: 37.5%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  border-radius: 999px;
}

.page-contact .hours__scale {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--slate);
}

.page-contact .contact-card__more {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.page-contact .contact-card__more summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding-right: 26px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--steel);
}

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

.page-contact .contact-card__more summary::after {
  content: "+";
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 16px;
  color: var(--orange);
}

.page-contact .contact-card__more[open] summary::after { content: "−"; }

.page-contact .contact-card__more p {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--txt-soft);
}

.page-contact .copy-btn {
  justify-self: start;
  min-height: 44px;
  padding: 0 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--steel);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--r);
  cursor: pointer;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  border-color: var(--orange);
  color: var(--ink);
}

.page-contact .copy-btn.is-copied {
  border-color: var(--contact-safe);
  color: var(--contact-safe);
}

/* ---------- 回复节奏 ---------- */

.page-contact .contact-response {
  padding: 56px 0 52px;
}

@media (min-width: 900px) {
  .page-contact .contact-response { padding: 76px 0 72px; }
}

.page-contact .contact-response__grid {
  display: grid;
  gap: 32px;
  align-items: start;
}

@media (min-width: 900px) {
  .page-contact .contact-response__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 52px;
  }
}

.page-contact .contact-response__copy h2 {
  margin: 12px 0 22px;
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

@media (min-width: 780px) {
  .page-contact .contact-response__copy h2 { font-size: 30px; }
}

.page-contact .contact-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-contact .contact-steps li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-steps li:last-child { border-bottom: 1px solid var(--line); }

.page-contact .contact-steps__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--orange);
  padding-top: 2px;
}

.page-contact .contact-steps__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-contact .contact-steps__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--txt-soft);
}

.page-contact .contact-shot {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--paper-3);
  box-shadow: var(--shadow-1);
}

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

.page-contact .contact-shot figcaption {
  padding: 12px 16px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  line-height: 1.7;
  color: var(--slate);
  border-top: 1px solid var(--line);
}

/* ---------- 常见联络问题 ---------- */

.page-contact .contact-faq {
  padding: 0 0 64px;
}

@media (min-width: 900px) {
  .page-contact .contact-faq { padding: 0 0 88px; }
}

.page-contact .contact-faq h2 {
  margin: 12px 0 20px;
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

@media (min-width: 780px) {
  .page-contact .contact-faq h2 { font-size: 30px; }
}

.page-contact .contact-faq__list {
  max-width: 880px;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-faq__item {
  border-top: 1px solid var(--line);
}

.page-contact .contact-faq__item summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: 18px 40px 18px 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

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

.page-contact .contact-faq__item summary::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--orange);
}

.page-contact .contact-faq__item[open] summary::after { content: "−"; }

.page-contact .contact-faq__item p {
  margin: 0 0 20px;
  padding-right: 30px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--txt-soft);
}

.page-contact .contact-faq__foot {
  max-width: 880px;
  margin: 22px 0 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--slate);
}

.page-contact .contact-faq__foot a {
  color: var(--steel);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-contact .contact-faq__foot a:hover { color: var(--orange); }

@media (prefers-reduced-motion: reduce) {
  .page-contact .field input,
  .page-contact .field select,
  .page-contact .field textarea,
  .page-contact .copy-btn {
    transition: none;
  }
}
<<<END>>>