.page-contact {
  --contact-ring-size: 208px;
  --contact-node: 44px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: calc(var(--topline-h) + 44px) 0 52px;
  background:
    radial-gradient(1080px 520px at 84% -14%, rgba(53, 240, 208, .13), transparent 62%),
    radial-gradient(720px 420px at 4% 112%, rgba(138, 108, 255, .13), transparent 60%),
    var(--ink-blue-base);
  border-bottom: 1px solid var(--line-dark);
  overflow: hidden;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(0deg, rgba(147, 164, 196, .055) 0 1px, transparent 1px 5px);
  pointer-events: none;
}

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

.page-contact .contact-hero .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--steel-text);
}

.page-contact .contact-hero .crumbs a {
  color: var(--steel-text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}

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

.page-contact .contact-hero__grid {
  display: grid;
  gap: 34px;
}

.page-contact .contact-hero__copy .label {
  display: block;
  margin-bottom: 16px;
  color: var(--fluoro-cyan);
}

.page-contact .contact-hero h1 {
  margin: 0 0 20px;
  font-size: clamp(30px, 7.4vw, 58px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--pure-white);
  max-width: 15em;
}

.page-contact .contact-hero__lead {
  margin: 0 0 26px;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--steel-text);
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

/* ---------- 章节通用 ---------- */
.page-contact .chapter-head {
  margin-bottom: 38px;
  max-width: 62ch;
}

.page-contact .chapter-head .chapter-no {
  display: block;
  margin-bottom: 10px;
  color: var(--fluoro-cyan);
}

.page-contact .chapter-head .label {
  display: block;
  margin-bottom: 10px;
  color: var(--steel-text);
}

.page-contact .chapter-head h2 {
  margin: 0 0 14px;
  font-size: clamp(24px, 5vw, 40px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-contact .chapter-head p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
}

.page-contact .panel-block .chapter-head h2 {
  color: var(--pure-white);
}

.page-contact .panel-block .chapter-head p {
  color: var(--steel-text);
}

.page-contact .paper-block .chapter-head h2 {
  color: var(--deep-brown-black);
}

.page-contact .paper-block .chapter-head p {
  color: #4b3f39;
}

.page-contact .paper-block .chapter-head .chapter-no {
  color: #b6521e;
}

.page-contact .paper-block .chapter-head .label {
  color: #7a6a60;
}

/* ---------- 01 三条通证卡 ---------- */
.page-contact .contact-channels {
  padding-top: 72px;
  padding-bottom: 76px;
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 24px 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(168deg, var(--midnight-panel) 0%, #0e1a2e 100%);
  border: 1px solid var(--line-dark);
  overflow: hidden;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--fluoro-cyan);
  opacity: .55;
}

.page-contact .channel-card--screen::before {
  background: var(--electric-violet);
}

.page-contact .channel-card--report::before {
  background: var(--signal-orange);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-2px);
  border-color: rgba(53, 240, 208, .5);
  box-shadow: 0 18px 40px -26px rgba(53, 240, 208, .5);
}

.page-contact .channel-card__tag {
  display: inline-block;
  align-self: flex-start;
  margin-bottom: 14px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  letter-spacing: .16em;
  font-family: var(--font-mono);
  color: var(--ink-blue-base);
  background: var(--fluoro-cyan);
}

.page-contact .channel-card--screen .channel-card__tag {
  color: var(--pure-white);
  background: rgba(138, 108, 255, .85);
}

.page-contact .channel-card--report .channel-card__tag {
  color: var(--ink-blue-base);
  background: var(--signal-orange);
}

.page-contact .channel-card h3 {
  margin: 0 0 12px;
  font-size: 21px;
  font-weight: 800;
  color: var(--pure-white);
}

.page-contact .channel-card__lead {
  margin: 0 0 18px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--steel-text);
}

.page-contact .channel-card__list {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--line-darker);
  padding-top: 18px;
}

.page-contact .channel-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: #c3d0e6;
}

.page-contact .channel-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--fluoro-cyan);
}

.page-contact .channel-card--screen .channel-card__list li::before {
  background: var(--electric-violet);
}

.page-contact .channel-card--report .channel-card__list li::before {
  background: var(--signal-orange);
}

.page-contact .channel-card__foot {
  margin: auto 0 0;
}

/* ---------- 02 纠错步骤 ---------- */
.page-contact .contact-fix {
  padding-top: 72px;
  padding-bottom: 76px;
}

.page-contact .fix-steps {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-contact .fix-step {
  position: relative;
  padding-left: 62px;
}

.page-contact .fix-step__no {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--contact-node);
  height: var(--contact-node);
  border-radius: 50%;
  background: var(--deep-brown-black);
  color: var(--fluoro-cyan);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  box-shadow: 0 0 0 4px rgba(53, 240, 208, .16);
}

.page-contact .fix-step h3 {
  margin: 6px 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--deep-brown-black);
}

.page-contact .fix-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #4b3f39;
}

.page-contact .fix-note {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--warm-paper-line);
  border: 1px solid var(--warm-paper-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-contact .fix-note__cell {
  padding: 20px 22px;
  background: #fbf7f0;
}

.page-contact .fix-note__cell .label {
  display: block;
  margin-bottom: 8px;
  color: #8a7663;
}

.page-contact .fix-note__cell p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #3b322c;
}

.page-contact .fix-note__cell strong {
  font-family: var(--font-mono);
  font-size: 14px;
  color: #b6521e;
  word-break: break-all;
}

/* ---------- 03 大屏适配 ---------- */
.page-contact .contact-screen {
  padding-top: 72px;
  padding-bottom: 76px;
}

.page-contact .screen-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

.page-contact .screen-split__main h3 {
  margin: 0 0 22px;
  font-size: 19px;
  font-weight: 800;
  color: var(--pure-white);
}

.page-contact .screen-split__sub {
  margin-top: 34px !important;
  padding-top: 26px;
  border-top: 1px solid var(--line-dark);
}

.page-contact .check-row {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 14px;
  padding: 16px 18px;
  margin-bottom: 12px;
  border-radius: var(--radius-md);
  background: rgba(18, 30, 54, .7);
  border: 1px solid var(--line-darker);
}

.page-contact .check-row__dot {
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--fluoro-cyan);
  box-shadow: 0 0 0 5px rgba(53, 240, 208, .14);
}

.page-contact .check-row h4 {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--pure-white);
}

.page-contact .check-row p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel-text);
}

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

.page-contact .detail-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.75;
  color: #c3d0e6;
}

.page-contact .detail-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 2px;
  background: var(--fluoro-cyan);
}

.page-contact .detail-list strong {
  color: var(--pure-white);
  font-weight: 700;
}

.page-contact .side-facts {
  padding: 26px 24px 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(53, 240, 208, .1), rgba(18, 30, 54, .92) 62%);
  border: 1px solid rgba(53, 240, 208, .28);
}

.page-contact .side-facts .label {
  display: block;
  margin-bottom: 14px;
  color: var(--fluoro-cyan);
}

.page-contact .side-facts__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 62px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--pure-white);
}

.page-contact .side-facts__cap {
  margin: 8px 0 22px;
  font-size: 13px;
  color: var(--steel-text);
}

.page-contact .side-facts__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  border-top: 1px solid var(--line-dark);
  padding-top: 20px;
}

.page-contact .side-facts__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  justify-content: space-between;
  align-items: baseline;
  font-size: 13.5px;
}

.page-contact .side-facts__list span {
  color: var(--steel-text);
}

.page-contact .side-facts__list strong {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--fluoro-cyan);
}

.page-contact .side-facts__tip {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-darker);
  font-size: 13.5px;
  line-height: 1.7;
  color: #c3d0e6;
}

/* ---------- 04 内容合作 ---------- */
.page-contact .contact-partner {
  padding-top: 76px;
  padding-bottom: 76px;
}

.page-contact .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .partner-card {
  padding: 24px 22px;
  border-radius: var(--radius-md);
  background: rgba(18, 30, 54, .62);
  border-left: 3px solid var(--electric-violet);
  transition: transform .2s ease, background-color .2s ease;
}

.page-contact .partner-card:hover,
.page-contact .partner-card:focus-within {
  transform: translateY(-2px);
  background: rgba(18, 30, 54, .92);
}

.page-contact .partner-card--wide {
  border-left-color: var(--fluoro-cyan);
}

.page-contact .partner-card__step {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--electric-violet);
}

.page-contact .partner-card--wide .partner-card__step {
  color: var(--fluoro-cyan);
}

.page-contact .partner-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 800;
  color: var(--pure-white);
}

.page-contact .partner-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--steel-text);
}

.page-contact .contact-partner__note {
  margin: 26px 0 0;
  padding: 18px 22px;
  border-radius: var(--radius-md);
  background: rgba(138, 108, 255, .1);
  border: 1px solid rgba(138, 108, 255, .3);
  font-size: 14.5px;
  line-height: 1.75;
  color: #d3d9f0;
}

.page-contact .contact-partner__note strong {
  font-family: var(--font-mono);
  color: var(--pure-white);
  word-break: break-all;
}

/* ---------- 05 响应节奏 ---------- */
.page-contact .contact-hours {
  padding-top: 72px;
  padding-bottom: 76px;
}

.page-contact .hours-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 38px;
  align-items: center;
}

.page-contact .hours-visual {
  position: relative;
  width: var(--contact-ring-size);
  height: var(--contact-ring-size);
  margin: 0 auto;
}

.page-contact .hours-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(from 0deg,
      #1a2740 0deg 135deg,
      var(--fluoro-cyan) 135deg 270deg,
      #1a2740 270deg 360deg);
  -webkit-mask: radial-gradient(circle at 50% 50%, transparent 0 63%, #000 63.5%);
  mask: radial-gradient(circle at 50% 50%, transparent 0 63%, #000 63.5%);
}

.page-contact .hours-ring::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: repeating-conic-gradient(from 0deg,
      rgba(255, 255, 255, .32) 0deg .9deg,
      transparent .9deg 15deg);
  -webkit-mask: radial-gradient(circle at 50% 50%, transparent 0 68%, #000 68.5% 74%, transparent 74.5%);
  mask: radial-gradient(circle at 50% 50%, transparent 0 68%, #000 68.5% 74%, transparent 74.5%);
  opacity: .75;
}

.page-contact .hours-ring__core {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 26px;
}

.page-contact .hours-ring__num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--pure-white);
}

.page-contact .hours-ring__cap {
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--steel-text);
}

.page-contact .hours-table {
  display: grid;
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-contact .hours-row {
  display: grid;
  gap: 6px;
  padding: 16px 20px;
  background: rgba(18, 30, 54, .78);
}

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

.page-contact .hours-row__val {
  font-size: 14.5px;
  line-height: 1.72;
  color: #c9d5e8;
}

.page-contact .hours-row--accent {
  background: rgba(53, 240, 208, .08);
}

.page-contact .hours-row--signal .hours-row__key {
  color: var(--signal-orange);
}

.page-contact .hours-row--signal {
  background: rgba(255, 122, 47, .09);
}

.page-contact .contact-hours__figure {
  margin: 40px 0 0;
}

/* ---------- 06 联系方式 ---------- */
.page-contact .contact-details {
  padding-top: 72px;
  padding-bottom: 68px;
}

.page-contact .details-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .detail-card {
  padding: 24px 22px;
  border-radius: var(--radius-md);
  background: #fbf7f0;
  border: 1px solid var(--warm-paper-line);
}

.page-contact .detail-card .label {
  display: block;
  margin-bottom: 12px;
  color: #8a7663;
}

.page-contact .detail-card__val {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--deep-brown-black);
  word-break: break-all;
}

.page-contact .detail-card__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: #5a4b42;
}

.page-contact .details-foot {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--warm-paper-line);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  justify-content: space-between;
  align-items: baseline;
}

.page-contact .details-foot p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: #5a4b42;
}

.page-contact .details-foot__icp {
  font-family: var(--font-mono);
  letter-spacing: .04em;
}

.page-contact .details-foot__link a {
  color: #b6521e;
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 82, 30, .45);
}

.page-contact .details-foot__link a:hover,
.page-contact .details-foot__link a:focus-visible {
  color: var(--deep-brown-black);
  border-color: var(--deep-brown-black);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .fix-note {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .partner-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .partner-card--wide {
    grid-column: span 2;
  }

  .page-contact .details-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    padding: calc(var(--topline-h) + 60px) 0 72px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: end;
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-contact .fix-steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 0 24px;
  }

  .page-contact .fix-step {
    padding-left: 0;
    padding-top: 62px;
  }

  .page-contact .fix-step__no {
    top: 0;
    left: 0;
  }

  .page-contact .fix-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 21px;
    left: calc(var(--contact-node) + 12px);
    right: -24px;
    height: 2px;
    background: repeating-linear-gradient(90deg, rgba(36, 30, 27, .28) 0 8px, transparent 8px 16px);
  }

  .page-contact .screen-split {
    grid-template-columns: 8fr 4fr;
    gap: 38px;
    align-items: start;
  }

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

  .page-contact .partner-card--wide {
    grid-column: span 1;
  }

  .page-contact .contact-partner__note {
    max-width: 72ch;
  }

  .page-contact .hours-split {
    grid-template-columns: 5fr 7fr;
    gap: 56px;
  }

  .page-contact .hours-visual {
    margin: 0;
  }

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

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

@media (min-width: 1100px) {
  .page-contact .contact-hero__grid {
    gap: 62px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .partner-card {
    transition: none;
  }

  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within,
  .page-contact .partner-card:hover,
  .page-contact .partner-card:focus-within {
    transform: none;
  }
}