.page-contact {
  --contact-rail-w: 296px;
  --contact-rail-top: 116px;
  --contact-card-line: rgba(6, 24, 46, .14);
}

/* ---------- 首屏 ---------- */

.page-contact__hero {
  padding-block: clamp(26px, 5vw, 52px) clamp(20px, 3vw, 34px);
}

.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  font-size: 13px;
  color: var(--muted);
}

.page-contact .crumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.page-contact .crumbs a:hover,
.page-contact .crumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .crumbs__sep {
  color: var(--line);
  font-size: 12px;
}

.page-contact__kicker {
  color: var(--cyan);
  letter-spacing: .14em;
  margin-bottom: 12px;
}

.page-contact__title {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.75rem, 5vw, 3.1rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0 0 18px;
  max-width: 20ch;
}

.page-contact__lead {
  max-width: 64ch;
  margin: 0;
  color: var(--muted);
  font-size: clamp(.95rem, 1.6vw, 1.0625rem);
  line-height: 1.85;
}

/* ---------- 三块联系信息卡 ---------- */

.contact-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 38px);
}

.contact-card {
  position: relative;
  overflow: hidden;
  background: var(--paper);
  color: var(--ink-800);
  border: 1px solid var(--contact-card-line);
  border-radius: var(--radius);
  padding: 20px 20px 18px;
  box-shadow: 0 4px 0 rgba(2, 10, 20, .55);
  transition: transform var(--fast) var(--ease), box-shadow var(--fast) var(--ease);
}

.contact-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--cyan);
}

.contact-card--mail::before { background: var(--cyan); }
.contact-card--tel::before { background: var(--amber); }
.contact-card--addr::before { background: var(--magenta); }

.contact-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 0 rgba(2, 10, 20, .6);
}

.page-contact .contact-card__label {
  color: #4C6B8A;
  letter-spacing: .14em;
  margin: 0 0 10px;
}

.contact-card__value {
  margin: 0 0 10px;
  font-size: clamp(.9rem, 2vw, 1.0625rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink-800);
  overflow-wrap: anywhere;
}

.contact-card--mail .contact-card__value { font-size: clamp(.82rem, 1.7vw, .95rem); }

.contact-card__note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: #5B7794;
}

.contact-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 18px;
  margin: 16px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

.contact-foot .mono { color: var(--amber); letter-spacing: .08em; }

.contact-foot__legal {
  color: var(--muted);
  opacity: .8;
}

/* ---------- 双栏骨架 ---------- */

.page-contact__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-block: 6px clamp(48px, 7vw, 84px);
}

.page-contact__flow {
  min-width: 0;
}

.page-contact__rail {
  display: none;
}

/* ---------- 章节 ---------- */

.flow-section {
  border-top: 1px solid var(--line-soft);
  padding-top: clamp(24px, 3.5vw, 36px);
  margin-top: clamp(24px, 3.5vw, 36px);
}

.page-contact__flow > .flow-section:first-child {
  border-top: 0;
  padding-top: 0;
  margin-top: 0;
}

.flow-section__intro {
  max-width: 68ch;
  margin: 0 0 22px;
  color: var(--muted);
  font-size: .95rem;
  line-height: 1.85;
}

.flow-section__note {
  margin: 20px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--cyan);
  background: rgba(11, 37, 69, .65);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--muted);
  font-size: .875rem;
  line-height: 1.8;
}

.flow-section__note .link { color: var(--cyan); }

/* ---------- 章节配图 ---------- */

.contact-figure {
  margin: 0 0 22px;
}

.page-contact .figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
}

/* ---------- 四类来意 ---------- */

.topic-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.topic {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--ink-800), var(--ink-850));
  padding: 18px 20px 20px;
  transition: border-color var(--fast) var(--ease);
}

.topic::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
}

.topic--data::before { background: var(--violet); }
.topic--feedback::before { background: var(--magenta); }
.topic--media::before { background: var(--cyan); }
.topic--biz::before { background: var(--amber); }

.topic:hover { border-color: var(--cyan); }
.topic--data:hover { border-color: var(--violet); }
.topic--feedback:hover { border-color: var(--magenta); }
.topic--media:hover { border-color: var(--cyan); }
.topic--biz:hover { border-color: var(--amber); }

.topic__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.topic__num {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-contact .topic__title {
  margin: 0;
  font-family: var(--font-title);
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.topic__body {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.85;
}

.topic__body .link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 193, .45);
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.topic__body .link:hover,
.topic__body .link:focus-visible {
  color: var(--cyan-deep);
  border-bottom-color: var(--cyan-deep);
}

.topic__list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 7px;
  margin: 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--line-soft);
}

.topic__list li {
  position: relative;
  padding-left: 16px;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--text);
  opacity: .85;
}

.topic__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .68em;
  width: 5px;
  height: 5px;
  background: currentColor;
  opacity: .5;
}

.topic--data .topic__list li::before { background: var(--violet); opacity: .9; }
.topic--feedback .topic__list li::before { background: var(--magenta); opacity: .9; }
.topic--media .topic__list li::before { background: var(--cyan); opacity: .9; }
.topic--biz .topic__list li::before { background: var(--amber); opacity: .9; }

/* ---------- 响应节奏 ---------- */

.pace {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.pace__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}

.pace__row:first-child { border-top: 0; padding-top: 0; }

.pace__when {
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--amber);
}

.pace__detail {
  min-width: 0;
}

.pace__bar {
  display: block;
  position: relative;
  height: 5px;
  margin-bottom: 10px;
  border-radius: 999px;
  background: rgba(30, 74, 117, .5);
  overflow: hidden;
}

.pace__bar::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--pace-w, 25%);
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan-deep), var(--cyan));
}

.pace__bar--a { --pace-w: 20%; }
.pace__bar--b { --pace-w: 42%; }
.pace__bar--c { --pace-w: 66%; }
.pace__bar--d { --pace-w: 90%; }

.pace__desc {
  margin: 0;
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.85;
}

.pace__desc strong {
  color: var(--text);
  font-weight: 600;
  margin-right: 4px;
}

/* ---------- 合作对接 ---------- */

.coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.coop-item {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(11, 37, 69, .62);
  padding: 16px 16px 18px;
  transition: border-color var(--fast) var(--ease), background-color var(--fast) var(--ease);
}

.coop-item:hover {
  border-color: var(--cyan);
  background: rgba(11, 37, 69, .85);
}

.coop-item__num {
  display: block;
  margin-bottom: 9px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-contact .coop-item h3 {
  margin: 0 0 9px;
  font-size: .9875rem;
  font-weight: 700;
  color: var(--text);
}

.coop-item p {
  margin: 0;
  color: var(--muted);
  font-size: .875rem;
  line-height: 1.8;
}

.coop-item p .link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 193, .45);
}

.coop-item p .link:hover,
.coop-item p .link:focus-visible {
  color: var(--cyan-deep);
  border-bottom-color: var(--cyan-deep);
}

/* ---------- 反馈清单 ---------- */

.feedback-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.feedback-figure {
  margin: 0;
}

.pick-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.pick-list__item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(11, 37, 69, .55);
  transition: border-color var(--fast) var(--ease), background-color var(--fast) var(--ease);
}

.pick-list__item:hover {
  border-color: var(--cyan);
  background: rgba(11, 37, 69, .8);
}

.pick-list__no {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--amber);
  line-height: 1.75;
}

.pick-list__text {
  font-size: .8875rem;
  line-height: 1.75;
  color: var(--muted);
}

.pick-list__text strong {
  display: block;
  color: var(--text);
  font-weight: 600;
}

/* ---------- 右侧联系条 ---------- */

.rail-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--ink-800), var(--ink-850));
  box-shadow: var(--panel-shadow);
  padding: 18px 18px 16px;
}

.page-contact .rail-card__label {
  margin: 0 0 14px;
  color: var(--cyan);
  letter-spacing: .16em;
}

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

.rail-list__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

.rail-list__row:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .rail-list__key {
  color: var(--muted);
  letter-spacing: .12em;
}

.rail-list__val {
  font-size: .85rem;
  line-height: 1.6;
  color: var(--text);
  overflow-wrap: anywhere;
}

.rail-list__val.mono { font-size: .78rem; color: var(--amber); }

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .topic__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 7px 22px;
  }

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

  .contact-card--addr {
    grid-column: span 2;
  }
}

@media (min-width: 760px) {
  .feedback-grid {
    grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
    align-items: start;
    gap: 24px;
  }

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

  .pace__row {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }

  .pace__when {
    padding-top: 2px;
  }
}

@media (min-width: 980px) {
  .page-contact__body {
    grid-template-columns: minmax(0, 1fr) var(--contact-rail-w);
    gap: clamp(28px, 3.6vw, 52px);
    align-items: start;
  }

  .page-contact__rail {
    display: block;
    position: sticky;
    top: var(--contact-rail-top);
  }

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

  .contact-card--addr {
    grid-column: auto;
  }

  .topic-list {
    gap: 14px;
  }

  .topic {
    padding: 20px 22px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .topic,
  .page-contact .coop-item,
  .page-contact .pick-list__item,
  .page-contact .crumbs a,
  .page-contact .topic__body .link {
    transition: none;
  }

  .page-contact .contact-card:hover {
    transform: none;
  }
}
<<<END>>>