.page-contact {
  --pc-gap: clamp(16px, 2.6vw, 30px);
  --pc-line: rgba(11, 18, 19, 0.14);
  --pc-line-soft: rgba(245, 240, 230, 0.18);
  background: var(--sand);
  color: var(--ink);
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

.page-contact .contact-hero {
  padding-block: clamp(18px, 3.5vw, 36px) clamp(28px, 5vw, 60px);
  background:
    radial-gradient(120% 90% at 90% -15%, rgba(16, 191, 176, 0.2), transparent 62%),
    linear-gradient(180deg, var(--sand) 0%, var(--sand-2) 100%);
}

.page-contact .hero-grid {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(18px, 3vw, 34px);
}

.page-contact .display {
  max-width: 18ch;
  color: var(--deep);
}

.page-contact .hero-lead {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 34em;
  font-size: clamp(15.5px, 1.15vw, 18px);
  line-height: 1.8;
  color: var(--rock);
}

.page-contact .hero-lead--tight {
  margin-top: 12px;
  font-size: clamp(14px, 1vw, 15.5px);
  color: var(--moss);
  border-left: 2px solid var(--teal);
  padding-left: 12px;
}

.page-contact .quick {
  background: var(--paper);
  border: 1px solid var(--pc-line);
  border-top: 3px solid var(--coral);
  border-radius: var(--r-md);
  padding: clamp(18px, 2.4vw, 26px);
  box-shadow: 0 20px 44px -32px rgba(10, 43, 44, 0.6);
}

.page-contact .quick-row {
  display: grid;
  gap: 3px;
  padding-block: 12px;
  border-bottom: 1px dashed var(--pc-line);
}

.page-contact .quick-row:last-of-type {
  border-bottom: 0;
}

.page-contact .quick-label {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--moss);
}

.page-contact .quick-value {
  font-family: var(--mono);
  font-size: clamp(13px, 1.5vw, 15px);
  line-height: 1.5;
  color: var(--ink);
  word-break: break-all;
}

.page-contact .quick-value--tel {
  color: var(--coral-deep);
  font-size: clamp(15px, 1.8vw, 18px);
}

.page-contact .quick-value--addr {
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.7;
}

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

/* 四步闭环 */
.page-contact .flow-band {
  background: var(--stone);
  padding-block: clamp(32px, 5vw, 66px);
}

.page-contact .flow-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 34px);
}

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

.page-contact .flow-step {
  display: flex;
}

.page-contact .flow-step details {
  flex: 1;
  background: var(--paper);
  border: 1px solid var(--pc-line);
  border-top: 3px solid var(--teal);
  border-radius: var(--r-md);
  padding: clamp(14px, 2vw, 20px);
  transition: border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-contact .flow-step details[open] {
  border-top-color: var(--coral);
  box-shadow: 0 16px 36px -30px rgba(10, 43, 44, 0.7);
}

.page-contact .flow-step summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  gap: 6px;
  position: relative;
  padding-right: 24px;
}

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

.page-contact .flow-step summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0;
  font-family: var(--mono);
  font-size: 17px;
  color: var(--teal-deep);
}

.page-contact .flow-step details[open] summary::after {
  content: "–";
  color: var(--coral-deep);
}

.page-contact .flow-step summary:focus-visible {
  outline: 2px solid var(--fluor);
  outline-offset: 4px;
}

.page-contact .flow-num {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--teal-deep);
}

.page-contact .flow-name {
  font-size: clamp(17px, 1.8vw, 21px);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--deep);
}

.page-contact .flow-time {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--rock);
}

.page-contact .flow-text {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--rock);
}

.page-contact .flow-media {
  margin: clamp(20px, 3vw, 34px) 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--deep-2);
}

.page-contact .flow-media figcaption {
  padding: 10px 16px 12px;
  background: var(--deep-2);
  color: var(--mist);
}

/* 三条渠道 */
.page-contact .channels {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: var(--sand);
}

.page-contact .channels::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -12%;
  width: 62vw;
  height: 62vw;
  max-width: 640px;
  max-height: 640px;
  background: radial-gradient(circle, rgba(16, 191, 176, 0.26), transparent 66%);
  pointer-events: none;
}

.page-contact .channels .wrap {
  position: relative;
}

.page-contact .channels .eyebrow {
  color: var(--fluor);
}

.page-contact .channels .section-title {
  color: var(--sand);
}

.page-contact .channels .lead {
  color: var(--mist);
}

.page-contact .chan-grid {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(22px, 3vw, 38px);
}

.page-contact .chan {
  height: 100%;
  background: linear-gradient(160deg, rgba(245, 240, 230, 0.08), rgba(245, 240, 230, 0.02));
  border: 1px solid var(--pc-line-soft);
  border-radius: var(--r-md);
  padding: clamp(18px, 2.4vw, 28px);
}

.page-contact .chan--mail {
  border-color: rgba(16, 191, 176, 0.5);
  background: linear-gradient(160deg, rgba(16, 191, 176, 0.18), rgba(10, 43, 44, 0.28));
}

.page-contact .chan-title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--fluor);
}

.page-contact .chan-value {
  margin: 0;
  font-family: var(--mono);
  color: var(--sand);
  line-height: 1.4;
  word-break: break-word;
}

.page-contact .chan--mail .chan-value {
  font-size: clamp(17px, 3vw, 30px);
  letter-spacing: -0.01em;
}

.page-contact .chan--phone .chan-value {
  font-size: clamp(17px, 2.2vw, 23px);
  color: var(--coral);
}

.page-contact .chan--addr .chan-value {
  font-family: var(--sans);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.7;
}

.page-contact .chan-use {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .chan-hint {
  margin: 10px 0 0;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--teal);
}

.page-contact .chan-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 54em;
  padding-left: 14px;
  border-left: 2px solid var(--coral);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* 提交清单 */
.page-contact .brief {
  background: var(--sand);
}

.page-contact .brief-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 46px);
}

.page-contact .brief-list {
  list-style: none;
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .brief-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: var(--paper);
  border: 1px solid var(--pc-line);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .brief-item input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.page-contact .brief-box {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 1.5px solid var(--rock);
  border-radius: 3px;
  position: relative;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .brief-item input:checked + .brief-box {
  background: var(--teal);
  border-color: var(--teal-deep);
}

.page-contact .brief-item input:checked + .brief-box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 6px;
  height: 10px;
  border-right: 2px solid var(--deep);
  border-bottom: 2px solid var(--deep);
  transform: rotate(40deg);
}

.page-contact .brief-item input:focus-visible + .brief-box {
  outline: 2px solid var(--fluor);
  outline-offset: 3px;
}

.page-contact .brief-item:has(input:checked) {
  background: var(--moss-tint);
  border-color: var(--moss);
}

.page-contact .brief-body {
  display: grid;
  gap: 4px;
}

.page-contact .brief-body strong {
  font-size: 15px;
  color: var(--deep);
}

.page-contact .brief-body span {
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--rock);
}

.page-contact .brief-warn {
  margin: 18px 0 0;
  padding: 12px 16px;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--clay-deep);
  background: rgba(255, 106, 61, 0.1);
  border: 1px solid rgba(255, 106, 61, 0.34);
  border-radius: var(--r-sm);
}

.page-contact .brief-media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--stone);
}

.page-contact .brief-media figcaption {
  padding: 10px 16px 12px;
  background: var(--paper);
}

/* 处理节奏 */
.page-contact .sla {
  background: var(--moss-tint);
}

.page-contact .sla .section-title {
  color: var(--deep);
}

.page-contact .sla-list {
  list-style: none;
  margin: clamp(18px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(12px, 2vw, 20px);
}

.page-contact .sla-item {
  background: var(--paper);
  border-left: 3px solid var(--moss);
  border-radius: var(--r-md);
  padding: clamp(16px, 2vw, 22px);
}

.page-contact .sla-num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.01em;
  color: var(--teal-deep);
}

.page-contact .sla-item strong {
  display: block;
  margin-top: 8px;
  font-size: 15px;
  color: var(--deep);
}

.page-contact .sla-item p {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--rock);
}

/* 合作与媒体 */
.page-contact .coop {
  background: var(--sand);
}

.page-contact .coop-grid {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-contact .coop-card {
  background: var(--paper);
  border: 1px solid var(--pc-line);
  border-top: 4px solid var(--clay);
  border-radius: var(--r-md);
  padding: clamp(18px, 2.4vw, 26px);
}

.page-contact .coop-card:nth-child(2) {
  border-top-color: var(--moss);
}

.page-contact .coop-card:nth-child(3) {
  border-top-color: var(--coral);
}

.page-contact .coop-title {
  margin: 14px 0 0;
  font-size: clamp(17px, 1.9vw, 21px);
  color: var(--deep);
}

.page-contact .coop-text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--rock);
}

/* 常见反馈类型 */
.page-contact .fb {
  background: var(--stone);
}

.page-contact .fb-tabs {
  position: relative;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-contact .fb-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .fb-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .fb-label {
  cursor: pointer;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--rock);
  color: var(--rock);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .fb-label:hover {
  border-color: var(--teal-deep);
  color: var(--teal-deep);
}

.page-contact #fb-a:checked ~ .fb-labels label[for="fb-a"],
.page-contact #fb-b:checked ~ .fb-labels label[for="fb-b"],
.page-contact #fb-c:checked ~ .fb-labels label[for="fb-c"],
.page-contact #fb-d:checked ~ .fb-labels label[for="fb-d"] {
  background: var(--deep);
  border-color: var(--deep);
  color: var(--sand);
}

.page-contact #fb-a:focus-visible ~ .fb-labels label[for="fb-a"],
.page-contact #fb-b:focus-visible ~ .fb-labels label[for="fb-b"],
.page-contact #fb-c:focus-visible ~ .fb-labels label[for="fb-c"],
.page-contact #fb-d:focus-visible ~ .fb-labels label[for="fb-d"] {
  outline: 2px solid var(--fluor);
  outline-offset: 3px;
}

.page-contact .fb-panel {
  display: none;
  margin-top: 16px;
  padding: clamp(18px, 2.6vw, 30px);
  background: var(--paper);
  border: 1px solid var(--pc-line);
  border-left: 3px solid var(--teal);
  border-radius: var(--r-md);
}

.page-contact #fb-a:checked ~ .fb-panels #panel-a,
.page-contact #fb-b:checked ~ .fb-panels #panel-b,
.page-contact #fb-c:checked ~ .fb-panels #panel-c,
.page-contact #fb-d:checked ~ .fb-panels #panel-d {
  display: block;
}

.page-contact .fb-panel h3 {
  margin: 0 0 12px;
  font-size: clamp(17px, 2vw, 22px);
  color: var(--deep);
}

.page-contact .fb-panel p {
  margin: 0 0 10px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock);
}

.page-contact .go-link {
  display: inline-block;
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--teal-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--teal);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .go-link:hover {
  color: var(--coral-deep);
  border-color: var(--coral);
}

.page-contact .go-link:focus-visible {
  outline: 2px solid var(--fluor);
  outline-offset: 3px;
}

/* 收尾入口 */
.page-contact .next {
  background: var(--deep-2);
  color: var(--sand);
}

.page-contact .next-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-contact .next .eyebrow {
  color: var(--fluor);
}

.page-contact .next .section-title {
  color: var(--sand);
}

.page-contact .next-grid {
  display: grid;
  gap: 12px;
}

.page-contact .next-card {
  display: block;
  padding: 18px 20px;
  border: 1px solid var(--pc-line-soft);
  border-radius: var(--r-sm);
  color: var(--sand);
  text-decoration: none;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-contact .next-card:hover {
  transform: translateY(-2px);
  border-color: var(--teal);
  background: rgba(16, 191, 176, 0.12);
}

.page-contact .next-card:focus-visible {
  outline: 2px solid var(--fluor);
  outline-offset: 3px;
}

.page-contact .next-kicker {
  display: block;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--fluor);
}

.page-contact .next-card strong {
  display: block;
  margin-top: 8px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
}

.page-contact .next-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .next-note a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal-deep);
}

.page-contact .next-note a:hover {
  color: var(--fluor);
  border-color: var(--fluor);
}

.page-contact .next-note a:focus-visible {
  outline: 2px solid var(--fluor);
  outline-offset: 3px;
}

@media (min-width: 640px) {
  .page-contact .brief-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-contact .flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .sla-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .next-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-contact .chan-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .page-contact .chan--mail {
    grid-column: 1 / -1;
  }
}

@media (min-width: 820px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.75fr);
    align-items: start;
  }

  .page-contact .brief-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-contact .brief-media {
    margin-top: 52px;
  }
}

@media (min-width: 1080px) {
  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .sla-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .chan-grid {
    grid-template-columns: 1.55fr 0.85fr 0.85fr;
  }

  .page-contact .chan--mail {
    grid-column: auto;
  }

  .page-contact .chan--phone {
    margin-top: 28px;
  }

  .page-contact .chan--addr {
    margin-top: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact * {
    transition: none !important;
    animation: none !important;
  }
}
<<<END>>>