.page-contact {
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  padding-bottom: var(--dock-space);
  color: var(--mist);
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 600px at 84% -6%, rgba(0, 229, 255, .10), transparent 62%),
    radial-gradient(900px 520px at 2% 44%, rgba(255, 107, 74, .07), transparent 60%),
    linear-gradient(180deg, var(--deep-sea) 0%, #08121f 100%);
}

.page-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(42, 74, 107, .30) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 74, 107, .30) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .35) 48%, transparent 84%);
  mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .35) 48%, transparent 84%);
}

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

/* ---------- 共享节奏微调 ---------- */

.page-contact .section {
  padding: clamp(46px, 6vw, 88px) 0;
}

.page-contact .section--tight {
  padding: clamp(34px, 4.5vw, 60px) 0;
}

.page-contact .section--panel {
  background: linear-gradient(180deg, rgba(13, 36, 64, .72), rgba(10, 26, 47, .28));
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .breadcrumb {
  padding-top: clamp(18px, 3vw, 28px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-contact .media-frame > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--steel);
}

.page-contact .eyebrow {
  margin: 0;
  font-family: var(--font-editorial);
  font-size: 13px;
  letter-spacing: .24em;
  color: var(--cyan);
}

/* ---------- 封面首屏 ---------- */

.contact-cover {
  padding: clamp(20px, 3vw, 36px) 0 clamp(36px, 5vw, 64px);
}

.cover-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.cover-copy h1 {
  margin: 14px 0 0;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.1;
  letter-spacing: -.012em;
  color: var(--mist);
}

.cover-lede {
  margin: 20px 0 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--steel);
}

.cover-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.cover-index {
  background: var(--paper);
  color: var(--deep-sea);
  border-left: 3px solid var(--coral);
  padding: 20px 22px 22px;
  box-shadow: 9px 9px 0 rgba(255, 107, 74, .18), 0 22px 44px rgba(0, 0, 0, .42);
}

.index-title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  font-family: var(--font-editorial);
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--blueprint);
  border-bottom: 1px solid rgba(42, 74, 107, .35);
}

.cover-index ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.cover-index li + li {
  border-top: 1px dashed rgba(42, 74, 107, .28);
}

.cover-index a {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 10px 4px;
  text-decoration: none;
  color: var(--deep-sea);
  font-size: 14px;
  transition: background-color .18s var(--ease), padding-left .18s var(--ease), color .18s var(--ease);
}

.cover-index a:hover,
.cover-index a:focus-visible {
  background: rgba(0, 229, 255, .2);
  padding-left: 12px;
  color: #04222e;
}

.idx-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--coral);
}

.cover-media {
  margin: 0;
}

.cover-media .media-frame {
  border: 1px solid var(--line-soft);
  box-shadow: 0 30px 64px rgba(0, 0, 0, .5);
}

@media (min-width: 900px) {
  .cover-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: 28px;
    row-gap: 48px;
    align-items: start;
  }

  .cover-copy {
    grid-column: 1 / span 7;
  }

  .cover-index {
    grid-column: 9 / span 4;
    margin-top: 10px;
  }

  .cover-media {
    grid-column: 1 / span 12;
  }
}

/* ---------- 通用区块标题 ---------- */

.section-head {
  max-width: 62ch;
  margin-bottom: 30px;
}

.section-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 35px);
  line-height: 1.22;
  color: var(--mist);
}

.section-lede {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.76;
  color: var(--steel);
}

/* ---------- 问题反馈 ---------- */

.feedback-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.feedback-lead h2 {
  margin: 12px 0 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 35px);
  line-height: 1.22;
  color: var(--mist);
}

.feedback-lead > p {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--steel);
}

.feedback-steps {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

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

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

.step-idx {
  font-family: var(--font-editorial);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--cyan);
  padding-top: 3px;
}

.feedback-steps p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.feedback-metrics {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  align-content: start;
}

.fb-metric {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 20px 22px;
  background: rgba(20, 47, 79, .5);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--cyan);
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.fb-metric--cyan {
  border-left-color: var(--cyan);
}

.fb-metric--green {
  border-left-color: var(--green);
}

.fb-metric--amber {
  border-left-color: var(--amber);
}

.fb-metric:hover {
  background: rgba(20, 47, 79, .82);
}

.fb-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1;
  color: var(--mist);
}

.fb-metric--cyan .fb-num {
  color: var(--cyan);
}

.fb-metric--green .fb-num {
  color: var(--green);
}

.fb-metric--amber .fb-num {
  color: var(--amber);
}

.fb-unit {
  font-size: .5em;
  font-weight: 600;
  margin-left: 2px;
  letter-spacing: .04em;
}

.fb-label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel);
}

@media (min-width: 880px) {
  .feedback-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    gap: 48px;
    align-items: start;
  }
}

/* ---------- 客服邮箱与电话 ---------- */

.channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.channel-card {
  position: relative;
  padding: 28px 24px 26px;
  background: linear-gradient(158deg, var(--ink-blue), var(--abyss));
  border: 1px solid var(--line-soft);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.channel-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 62px;
  height: 3px;
  background: var(--cyan);
}

.channel-card--phone::before {
  background: var(--coral);
}

.channel-card:hover {
  border-color: rgba(0, 229, 255, .5);
  box-shadow: var(--glow-cyan);
}

.channel-card--phone:hover {
  border-color: rgba(255, 107, 74, .5);
  box-shadow: 0 0 0 1px rgba(255, 107, 74, .45), 0 14px 34px rgba(255, 107, 74, .14);
}

.channel-key {
  margin: 0 0 14px;
  font-family: var(--font-editorial);
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--steel);
}

.channel-value {
  display: inline-block;
  max-width: 100%;
  padding-bottom: 5px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(16px, 2.4vw, 24px);
  letter-spacing: .01em;
  text-decoration: none;
  color: var(--mist);
  border-bottom: 1px dashed rgba(0, 229, 255, .5);
  overflow-wrap: anywhere;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.channel-value:hover,
.channel-value:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.channel-value--phone {
  font-size: clamp(24px, 4vw, 38px);
  letter-spacing: .06em;
  border-bottom-color: rgba(255, 107, 74, .55);
}

.channel-value--phone:hover,
.channel-value--phone:focus-visible {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

.channel-note {
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.76;
  color: var(--steel);
}

.channel-card .copy-btn {
  margin-top: 20px;
}

.channel-meta {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(42, 74, 107, .8);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--steel);
}

@media (min-width: 820px) {
  .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

/* ---------- 合作咨询 ---------- */

.partnership-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.partnership-copy h2 {
  margin: 12px 0 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 35px);
  line-height: 1.22;
  color: var(--mist);
}

.partnership-lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--steel);
}

.partner-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.partner-list li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
}

.partner-list li:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.partner-idx {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--coral);
}

.partner-list h3 {
  margin: 0 0 7px;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 17px;
  color: var(--mist);
}

.partner-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--steel);
}

.partner-aside {
  align-self: start;
  padding: 26px 24px 28px;
  background: var(--paper);
  color: var(--deep-sea);
  border-left: 4px solid var(--coral);
  box-shadow: 10px 10px 0 rgba(0, 229, 255, .18);
}

.aside-tag {
  margin: 0;
  font-family: var(--font-editorial);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--blueprint);
}

.aside-title {
  margin: 14px 0 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.4;
  color: var(--deep-sea);
}

.aside-body {
  margin: 14px 0 22px;
  font-size: 15px;
  line-height: 1.74;
  color: #24405f;
}

.aside-foot {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--blueprint);
}

@media (min-width: 880px) {
  .partnership-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    gap: 48px;
    align-items: start;
  }
}

/* ---------- 服务节点与备案 ---------- */

.node-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: center;
}

.node-media {
  margin: 0;
}

.node-media .media-frame {
  border: 1px solid var(--line-soft);
  box-shadow: 0 24px 52px rgba(0, 0, 0, .45);
}

.node-copy h2 {
  margin: 12px 0 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1.24;
  color: var(--mist);
}

.node-lede {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.76;
  color: var(--steel);
}

.node-list {
  margin: 26px 0 0;
  padding: 0;
}

.node-list > div {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(42, 74, 107, .75);
}

.node-list > div:first-child {
  border-top: 1px dashed rgba(42, 74, 107, .75);
}

.node-list dt {
  font-family: var(--font-editorial);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--steel);
}

.node-list dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.66;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.node-mono {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--green);
}

@media (min-width: 880px) {
  .node-grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    gap: 52px;
  }

  .node-list > div {
    grid-template-columns: 96px minmax(0, 1fr);
  }
}

/* ---------- 常见问题引导 ---------- */

.guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.guide-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px 24px;
  background: rgba(20, 47, 79, .5);
  border: 1px solid var(--line-soft);
  border-top: 3px solid var(--blueprint);
  text-decoration: none;
  color: inherit;
  transition: border-color .2s var(--ease), background-color .2s var(--ease), box-shadow .2s var(--ease);
}

.guide-card:hover,
.guide-card:focus-visible {
  border-top-color: var(--cyan);
  background: rgba(20, 47, 79, .92);
  box-shadow: 0 18px 38px rgba(0, 0, 0, .38);
}

.guide-card h3 {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 17px;
  color: var(--mist);
}

.guide-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

.guide-arrow {
  margin-top: auto;
  padding-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--cyan);
  transition: color .18s var(--ease);
}

.guide-card:hover .guide-arrow {
  color: var(--coral);
}

@media (min-width: 640px) {
  .guide-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 1040px) {
  .guide-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-contact .cover-index a,
  .page-contact .channel-card,
  .page-contact .channel-value,
  .page-contact .fb-metric,
  .page-contact .guide-card,
  .page-contact .guide-arrow {
    transition: none;
  }
}