.page-contact {
  position: relative;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(36px, 6vw, 72px);
  background:
    radial-gradient(120% 92% at 92% 6%, rgba(91, 75, 138, .18), transparent 58%),
    radial-gradient(96% 84% at 2% 18%, rgba(22, 119, 184, .15), transparent 60%),
    var(--paper);
  border-bottom: 1px solid var(--blueprint);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(203, 215, 230, .62) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(203, 215, 230, .5) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 92%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 92%);
}

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

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 52px);
  align-items: start;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-contact .contact-hero h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.05rem, 5.6vw, 4.05rem);
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--ink);
  max-width: 20ch;
}

.page-contact .contact-hero .lede {
  margin-top: 20px;
  max-width: 46ch;
  color: var(--ink-soft);
}

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

.page-contact .contact-hero__aside {
  display: grid;
  gap: 22px;
}

.page-contact .contact-hero__ring {
  position: relative;
  width: min(300px, 78%);
  aspect-ratio: 1;
  margin-inline: auto;
  display: grid;
  place-items: center;
}

.page-contact .ring {
  position: absolute;
  border-radius: 50%;
}

.page-contact .ring--a {
  inset: 0;
  border: 1px solid rgba(22, 119, 184, .38);
  background: conic-gradient(from 130deg, rgba(22, 119, 184, .26), rgba(91, 75, 138, .04) 46%, rgba(91, 75, 138, .3) 78%, rgba(22, 119, 184, .26));
  animation: contact-ring-spin 30s linear infinite;
}

.page-contact .ring--b {
  inset: 12%;
  border: 1px dashed rgba(91, 75, 138, .42);
  animation: contact-ring-spin 42s linear infinite reverse;
}

.page-contact .ring__core {
  position: relative;
  z-index: 1;
  text-align: center;
  font-family: var(--font-mono);
  font-size: .92rem;
  line-height: 1.55;
  letter-spacing: .04em;
  color: var(--ink);
}

@keyframes contact-ring-spin {
  to { transform: rotate(1turn); }
}

.page-contact .contact-metrics {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--blueprint);
  border: 1px solid var(--blueprint);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-contact .contact-metric {
  background: var(--card);
  padding: 14px 18px;
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-contact .contact-metric__num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--lake);
  min-width: 2.6ch;
}

.page-contact .contact-metric__label {
  font-size: .92rem;
  color: var(--ink-mute);
}

/* ---------- 合作方向 ---------- */
.page-contact .contact-directions {
  background: var(--paper);
}

.page-contact .contact-directions__grid {
  margin-top: clamp(26px, 4vw, 42px);
}

.page-contact .contact-direction {
  display: grid;
  align-content: start;
  gap: 14px;
  padding: clamp(22px, 3vw, 32px);
  border-top: 3px solid var(--lake);
}

.page-contact .contact-direction--content {
  border-top-color: var(--dusk);
}

.page-contact .contact-direction--tech {
  border-top-color: var(--flame);
}

.page-contact .contact-direction h3 {
  font-family: var(--font-module);
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
  margin: 0;
}

.page-contact .contact-direction > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: .96rem;
}

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

.page-contact .contact-direction__list li {
  position: relative;
  padding-left: 20px;
  font-size: .94rem;
  color: var(--ink-soft);
  line-height: 1.65;
}

.page-contact .contact-direction__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 2px solid var(--lake);
}

.page-contact .contact-direction--content .contact-direction__list li::before {
  border-color: var(--dusk);
}

.page-contact .contact-direction--tech .contact-direction__list li::before {
  border-color: var(--flame);
}

.page-contact .contact-direction__link {
  justify-self: start;
  font-family: var(--font-module);
  font-weight: 600;
  font-size: .92rem;
  color: var(--lake);
  text-decoration: none;
  border-bottom: 1px solid rgba(22, 119, 184, .35);
  padding-bottom: 2px;
}

.page-contact .contact-direction__link:hover {
  border-bottom-color: var(--lake);
}

/* ---------- 合作流程蓝图 ---------- */
.page-contact .contact-blueprint {
  position: relative;
  margin: clamp(20px, 4vw, 44px) clamp(10px, 2.4vw, 26px);
  padding: clamp(40px, 7vw, 84px) 0;
  border-radius: clamp(24px, 4vw, 44px);
  overflow: hidden;
  background:
    radial-gradient(84% 74% at 90% 0%, rgba(22, 119, 184, .34), transparent 62%),
    radial-gradient(74% 64% at 0% 100%, rgba(228, 87, 46, .2), transparent 62%),
    linear-gradient(158deg, #262040 0%, #171A1F 64%);
  color: #F1EBDE;
}

.page-contact .contact-blueprint::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .32;
  background-image:
    linear-gradient(to right, rgba(203, 215, 230, .3) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(203, 215, 230, .24) 1px, transparent 1px);
  background-size: 82px 82px;
}

.page-contact .contact-blueprint .wrap {
  position: relative;
  z-index: 1;
}

.page-contact .contact-blueprint h2 {
  color: #FCF8F0;
}

.page-contact .contact-blueprint .eyebrow {
  color: var(--saffron);
}

.page-contact .contact-blueprint .lede {
  color: rgba(241, 235, 222, .74);
}

.page-contact .contact-blueprint__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 46px);
  margin-top: clamp(26px, 4vw, 44px);
}

.page-contact .contact-blueprint__rail {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-contact .rail-title {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(203, 215, 230, .7);
}

.page-contact .type-chip {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(203, 215, 230, .28);
  background: rgba(247, 242, 232, .05);
  color: #F1EBDE;
  font-family: var(--font-module);
  font-weight: 600;
  font-size: .95rem;
  text-decoration: none;
  transition: background .25s ease, border-color .25s ease, transform .25s ease;
}

.page-contact .type-chip__no {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--saffron);
}

.page-contact .type-chip:hover,
.page-contact .type-chip:focus-visible {
  background: rgba(22, 119, 184, .34);
  border-color: rgba(203, 215, 230, .62);
  transform: translateX(4px);
}

.page-contact .contact-blueprint__flow {
  display: grid;
  gap: clamp(22px, 3vw, 32px);
}

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

.page-contact .flow-step {
  position: relative;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: rgba(247, 242, 232, .07);
  border: 1px solid rgba(203, 215, 230, .18);
}

.page-contact .flow-step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 40px;
  top: 68px;
  bottom: -15px;
  width: 1px;
  background: linear-gradient(to bottom, rgba(203, 215, 230, .48), rgba(203, 215, 230, 0));
}

.page-contact .flow-step__no {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: .84rem;
  font-weight: 700;
  color: #FCF8F0;
  border: 1px solid rgba(203, 215, 230, .34);
  background: rgba(22, 119, 184, .3);
}

.page-contact .flow-step__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-module);
  font-size: 1.05rem;
  font-weight: 700;
  color: #FCF8F0;
}

.page-contact .flow-step__body p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.72;
  color: rgba(241, 235, 222, .74);
}

.page-contact .contact-blueprint__figure {
  margin: 0;
}

.page-contact .contact-blueprint__figure .figure-frame__caption {
  color: rgba(241, 235, 222, .62);
}

/* ---------- 客服渠道 ---------- */
.page-contact .contact-channels {
  background: var(--paper);
}

.page-contact .contact-channels__grid {
  margin-top: clamp(26px, 4vw, 42px);
}

.page-contact .channel-card {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: clamp(22px, 3vw, 34px);
  border-left: 4px solid var(--lake);
}

.page-contact .channel-card--phone {
  border-left-color: var(--flame);
}

.page-contact .channel-card__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.page-contact .channel-card__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2.4vw, 1.5rem);
  font-weight: 700;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .channel-card__hint {
  margin: 0;
  font-size: .94rem;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-contact .contact-note {
  margin-top: clamp(20px, 3vw, 30px);
  padding: 20px 24px;
  border-radius: var(--radius-lg);
  background: var(--paper-2);
  border: 1px solid var(--blueprint);
  font-size: .95rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-contact .contact-note a {
  color: var(--lake);
  font-weight: 600;
}

/* ---------- 通信信息与备案 ---------- */
.page-contact .contact-region {
  background: var(--paper-2);
  border-top: 1px solid var(--blueprint);
  border-bottom: 1px solid var(--blueprint);
}

.page-contact .contact-region__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
}

.page-contact .contact-region__body .lede {
  margin-top: 16px;
  color: var(--ink-soft);
  max-width: 44ch;
}

.page-contact .contact-facts {
  margin: clamp(22px, 3vw, 32px) 0 0;
  display: grid;
  gap: 1px;
  background: var(--blueprint);
  border: 1px solid var(--blueprint);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-contact .fact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 15px 20px;
  background: var(--card);
}

.page-contact .fact-row dt {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .12em;
  color: var(--ink-mute);
}

.page-contact .fact-row dd {
  margin: 0;
  font-family: var(--font-module);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .contact-region__foot {
  margin: 22px 0 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--ink-mute);
}

.page-contact .contact-region__foot a {
  color: var(--lake);
  font-weight: 600;
}

.page-contact .contact-region__figure {
  margin: 0;
}

/* ---------- 常见合作问题 ---------- */
.page-contact .contact-qa {
  background: var(--paper);
}

.page-contact .qa-list {
  margin-top: clamp(24px, 4vw, 38px);
  display: grid;
  gap: 12px;
}

.page-contact .qa-item {
  border: 1px solid var(--blueprint);
  border-radius: var(--radius-md);
  background: var(--card);
  overflow: hidden;
}

.page-contact .qa-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 22px;
  font-family: var(--font-module);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
}

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

.page-contact .qa-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  line-height: 1;
  color: var(--lake);
}

.page-contact .qa-item[open] summary::after {
  content: "−";
  color: var(--flame);
}

.page-contact .qa-item__body {
  padding: 0 22px 20px;
  border-top: 1px solid var(--paper-2);
  padding-top: 16px;
}

.page-contact .qa-item__body p {
  margin: 0;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 提交需求 ---------- */
.page-contact .contact-submit {
  background: var(--paper);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-contact .contact-submit__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 50px);
  padding: clamp(26px, 5vw, 56px);
  border-radius: clamp(24px, 4vw, 44px);
  border: 1px solid var(--blueprint);
  background:
    radial-gradient(72% 84% at 100% 0%, rgba(22, 119, 184, .2), transparent 62%),
    radial-gradient(64% 70% at 0% 100%, rgba(91, 75, 138, .14), transparent 64%),
    var(--paper-2);
}

.page-contact .contact-submit__intro .lede {
  margin-top: 16px;
  color: var(--ink-soft);
  max-width: 40ch;
}

.page-contact .contact-submit__tips {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .contact-submit__tips li {
  position: relative;
  padding-left: 22px;
  font-size: .93rem;
  line-height: 1.7;
  color: var(--ink-mute);
}

.page-contact .contact-submit__tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 10px;
  height: 1px;
  background: var(--dusk);
}

.page-contact .contact-form {
  display: grid;
  gap: 16px;
}

.page-contact .form-field {
  display: grid;
  gap: 8px;
}

.page-contact .form-field label {
  font-family: var(--font-module);
  font-weight: 600;
  font-size: .9rem;
  color: var(--ink);
}

.page-contact .form-field input,
.page-contact .form-field select,
.page-contact .form-field textarea {
  width: 100%;
  max-width: 100%;
  padding: 13px 16px;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--blueprint);
  border-radius: var(--radius-md);
  transition: border-color .2s ease, box-shadow .2s ease;
}

.page-contact .form-field textarea {
  resize: vertical;
  min-height: 132px;
}

.page-contact .form-field input::placeholder,
.page-contact .form-field textarea::placeholder {
  color: var(--ink-mute);
}

.page-contact .form-field input:focus-visible,
.page-contact .form-field select:focus-visible,
.page-contact .form-field textarea:focus-visible {
  outline: none;
  border-color: var(--lake);
  box-shadow: 0 0 0 3px rgba(22, 119, 184, .24);
}

.page-contact .form-field input:invalid:not(:placeholder-shown),
.page-contact .form-field textarea:invalid:not(:placeholder-shown) {
  border-color: var(--flame);
  box-shadow: 0 0 0 3px rgba(228, 87, 46, .16);
}

.page-contact .form-actions {
  display: grid;
  gap: 12px;
  margin-top: 4px;
}

.page-contact .form-actions .btn {
  justify-self: start;
}

.page-contact .form-hint {
  margin: 0;
  font-size: .86rem;
  line-height: 1.7;
  color: var(--ink-mute);
}

.page-contact .form-hint a {
  color: var(--lake);
  font-weight: 600;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .contact-region__layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

  .page-contact .fact-row {
    grid-template-columns: 128px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  }

  .page-contact .contact-blueprint__layout {
    grid-template-columns: 236px minmax(0, 1fr);
  }

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

  .page-contact .contact-submit__panel {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  }
}

@media (min-width: 1120px) {
  .page-contact .contact-blueprint__flow {
    grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
    align-items: start;
  }
}

@media (max-width: 420px) {
  .page-contact .contact-hero__ring {
    width: min(230px, 84%);
  }

  .page-contact .flow-step {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
    padding: 16px;
  }

  .page-contact .flow-step__no {
    width: 38px;
    height: 38px;
    font-size: .76rem;
  }

  .page-contact .flow-step:not(:last-child)::before {
    left: 34px;
    top: 58px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ring--a,
  .page-contact .ring--b {
    animation: none;
  }

  .page-contact .type-chip {
    transition: none;
  }
}
<<<END>>>