.page-contact {
  --c-line: 1px dashed var(--blueprint);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

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

/* ===== 首屏 ===== */
.page-contact .c-hero {
  position: relative;
  background: var(--ink);
  color: var(--data);
  padding: calc(var(--header-h) + 28px) 0 48px;
  overflow: hidden;
}

.page-contact .c-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(to right, rgba(43, 61, 92, .75) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(to bottom, rgba(43, 61, 92, .75) 0 1px, transparent 1px 48px);
  opacity: .55;
  pointer-events: none;
}

.page-contact .c-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--green) 0%, var(--green) 45%, var(--orange) 100%);
}

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

.page-contact .c-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 26px;
  font-size: 13px;
  color: var(--stone);
}

.page-contact .c-crumbs a {
  color: var(--green-lt);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-contact .c-crumbs a:hover {
  border-bottom-color: var(--green-lt);
}

.page-contact .c-crumbs [aria-current] {
  color: var(--data);
  font-weight: 700;
}

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

.page-contact .c-eyebrow {
  margin: 0 0 14px;
  color: var(--green-lt);
}

.page-contact .c-hero-title {
  margin: 0;
  font-size: clamp(40px, 8.5vw, 92px);
  font-weight: 900;
  line-height: .96;
  letter-spacing: -.03em;
  color: var(--paper);
}

.page-contact .c-hero-lede {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--data);
}

.page-contact .c-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.page-contact .c-hero-actions .btn--ghost,
.page-contact .c-cta-actions .btn--ghost {
  color: var(--paper);
  border-color: var(--paper);
  box-shadow: 4px 4px 0 var(--green);
}

.page-contact .c-hero-actions .btn--ghost:hover,
.page-contact .c-cta-actions .btn--ghost:hover {
  background: rgba(244, 246, 242, .12);
}

.page-contact .c-hero-fig {
  margin: 0;
  background: var(--ink-2);
  border: 3px solid var(--blueprint);
  box-shadow: 10px 10px 0 rgba(23, 117, 76, .38);
}

.page-contact .c-hero-fig img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .c-hero-fig figcaption {
  padding: 10px 12px;
  border-top: 1px solid var(--blueprint);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--stone);
}

.page-contact .c-hero-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 18px;
  margin: 40px 0 0;
  padding: 24px 0 0;
  border-top: 3px solid var(--blueprint);
}

.page-contact .c-hero-stats li {
  display: grid;
  gap: 5px;
  min-width: 0;
}

.page-contact .c-hs-num {
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-contact .c-hs-label {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--stone);
}

/* ===== 区块通用 ===== */
.page-contact .c-band {
  padding: 54px 0;
}

.page-contact .c-head {
  position: relative;
  margin-bottom: 30px;
  padding-bottom: 16px;
  border-bottom: 3px solid var(--ink);
}

.page-contact .c-coord {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 10px;
  background: var(--green);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
}

.page-contact .c-h2 {
  margin: 0;
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-contact .c-head-note {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--blueprint);
}

/* ===== 来意卡 ===== */
.page-contact .c-intent-grid {
  display: grid;
  gap: 24px;
}

.page-contact .c-intent {
  position: relative;
  padding: 36px 22px 24px;
  background: var(--paper);
  border: 4px solid var(--ink);
  box-shadow: var(--shadow-hard);
  transition: box-shadow .18s var(--ease), transform .18s var(--ease);
}

.page-contact .c-intent:hover {
  box-shadow: var(--shadow-hard-sm);
  transform: translate(4px, 4px);
}

.page-contact .c-intent-tag {
  position: absolute;
  top: 0;
  right: 0;
  padding: 7px 14px 7px 20px;
  background: var(--green);
  color: var(--paper);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .14em;
  clip-path: polygon(12px 0, 100% 0, 100% 100%, 0 100%);
}

.page-contact .c-intent--school .c-intent-tag {
  background: var(--ink);
  color: var(--green-lt);
}

.page-contact .c-intent--brand .c-intent-tag {
  background: var(--orange);
  color: var(--ink);
}

.page-contact .c-intent-title {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}

.page-contact .c-intent-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--blueprint);
}

.page-contact .c-prep {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--stone);
}

.page-contact .c-prep summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  list-style: none;
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--green);
}

.page-contact .c-prep summary::-webkit-details-marker {
  display: none;
}

.page-contact .c-prep summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
}

.page-contact .c-prep[open] summary::after {
  content: "–";
}

.page-contact .c-prep-list {
  list-style: none;
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
}

.page-contact .c-prep-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
}

.page-contact .c-prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 8px;
  height: 8px;
  border: 2px solid var(--green);
}

/* ===== 联系渠道 + 纠错 ===== */
.page-contact .c-channels-sec {
  padding-top: 0;
}

.page-contact .c-split {
  display: grid;
  gap: 30px;
}

.page-contact .c-channels {
  margin: 0;
  border-top: 3px solid var(--ink);
}

.page-contact .c-channel {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--stone);
}

.page-contact .c-channel dt {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--green);
}

.page-contact .c-channel dd {
  margin: 0;
  min-width: 0;
}

.page-contact .c-channel-val {
  display: block;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  word-break: break-word;
  color: var(--ink);
}

.page-contact .c-channel-note {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--blueprint);
}

.page-contact .c-fixcard {
  padding: 28px 22px;
  background: var(--ink-2);
  color: var(--data);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard);
}

.page-contact .c-fix-label {
  margin: 0 0 12px;
  color: var(--green-lt);
}

.page-contact .c-fix-title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.25;
  color: var(--paper);
}

.page-contact .c-fix-lede {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--stone);
}

.page-contact .c-fixlist {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
}

.page-contact .c-fixlist li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--data);
}

.page-contact .c-fixlist li::before {
  content: "";
  width: 16px;
  height: 16px;
  margin-top: 2px;
  border: 2px solid var(--green-lt);
}

.page-contact .c-fix-foot {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--blueprint);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--green-lt);
}

/* ===== 四步流程 ===== */
.page-contact .c-steps {
  list-style: none;
  display: grid;
  gap: 26px;
  margin: 0;
  padding: 0;
}

.page-contact .c-step {
  position: relative;
  padding-left: 58px;
}

.page-contact .c-step-no {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--green);
  background: var(--paper);
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
}

.page-contact .c-step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 44px;
  bottom: -26px;
  width: 1px;
  background: var(--blueprint);
  opacity: .6;
}

.page-contact .c-step-title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
}

.page-contact .c-step-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--blueprint);
}

.page-contact .c-step-out {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 12px 0 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .c-step-out span {
  padding: 3px 8px;
  background: var(--green);
  color: var(--paper);
  font-size: 11px;
  letter-spacing: .12em;
}

/* ===== 响应节奏 ===== */
.page-contact .c-rhythm {
  position: relative;
  padding: 54px 0;
  background: var(--ink);
  color: var(--data);
  overflow: hidden;
}

.page-contact .c-rhythm::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(to right, rgba(43, 61, 92, .7) 0 1px, transparent 1px 240px),
    repeating-linear-gradient(to bottom, rgba(43, 61, 92, .7) 0 1px, transparent 1px 240px);
  opacity: .7;
  pointer-events: none;
}

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

.page-contact .c-head--dark {
  border-bottom-color: var(--blueprint);
  margin-bottom: 28px;
}

.page-contact .c-head--dark .c-h2 {
  color: var(--paper);
}

.page-contact .c-coord--dark {
  background: var(--green-lt);
  color: var(--ink);
}

.page-contact .c-rhythm-grid {
  display: grid;
  gap: 32px;
}

.page-contact .c-rhythm-copy p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--data);
}

.page-contact .c-rhythm-copy p:last-child {
  margin-bottom: 0;
}

.page-contact .c-cadence {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 3px solid var(--green);
}

.page-contact .c-cadence-item {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--blueprint);
}

.page-contact .c-cadence-k {
  grid-row: span 2;
  padding-top: 2px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-contact .c-cadence-item strong {
  font-size: 15px;
  color: var(--paper);
}

.page-contact .c-cadence-item span:last-child {
  font-size: 13px;
  line-height: 1.6;
  color: var(--stone);
}

/* ===== 版本反馈指向 ===== */
.page-contact .c-feedback {
  padding: 44px 0;
  background: var(--paper);
}

.page-contact .c-feedback-inner {
  display: grid;
  gap: 20px;
  padding-left: 20px;
  border-left: 8px solid var(--red);
}

.page-contact .c-feedback-title {
  font-size: clamp(20px, 2.8vw, 28px);
}

.page-contact .c-feedback-inner p {
  margin: 12px 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--blueprint);
}

/* ===== 先行阅读 ===== */
.page-contact .c-read-grid {
  display: grid;
  gap: 16px;
}

.page-contact .c-read-card {
  display: block;
  padding: 22px 20px;
  background: var(--paper);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard-sm);
  text-decoration: none;
  color: var(--ink);
  transition: box-shadow .18s var(--ease), transform .18s var(--ease);
}

.page-contact .c-read-card:hover {
  transform: translate(4px, 4px);
  box-shadow: 2px 2px 0 var(--ink);
}

.page-contact .c-read-k {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--green);
}

.page-contact .c-read-title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
}

.page-contact .c-read-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--blueprint);
}

.page-contact .c-read-more {
  display: inline-block;
  margin-top: 14px;
  padding-bottom: 2px;
  border-bottom: 2px solid var(--orange);
  font-size: 13px;
  font-weight: 700;
}

/* ===== 收尾 ===== */
.page-contact .c-cta {
  position: relative;
  padding: 64px 0;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
}

.page-contact .c-cta-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .4;
}

.page-contact .c-cta::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 18, 32, .5) 0%, rgba(11, 18, 32, .92) 100%);
  pointer-events: none;
}

.page-contact .c-cta-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.page-contact .c-cta-title {
  margin: 0;
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-contact .c-cta-text {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--data);
}

.page-contact .c-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

/* ===== 断点 ===== */
@media (min-width: 620px) {
  .page-contact .c-channel {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 6px 20px;
    align-items: start;
  }

  .page-contact .c-channel dt {
    padding-top: 3px;
  }
}

@media (min-width: 860px) {
  .page-contact .c-hero {
    padding: calc(var(--header-h) + 40px) 0 60px;
  }

  .page-contact .c-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: end;
    gap: 46px;
  }

  .page-contact .c-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px 24px;
  }

  .page-contact .c-band {
    padding: 78px 0;
  }

  .page-contact .c-channels-sec {
    padding-top: 0;
  }

  .page-contact .c-rhythm {
    padding: 78px 0;
  }

  .page-contact .c-rhythm-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 46px;
    align-items: start;
  }

  .page-contact .c-feedback-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 34px;
    padding-left: 26px;
  }

  .page-contact .c-cta {
    padding: 86px 0;
  }
}

@media (min-width: 900px) {
  .page-contact .c-intent-grid {
    grid-template-columns: 5fr 4fr 3fr;
    gap: 18px;
    align-items: start;
  }

  .page-contact .c-intent {
    padding: 40px 20px 26px;
  }

  .page-contact .c-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }

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

  .page-contact .c-step {
    padding: 0 26px 0 0;
  }

  .page-contact .c-step-no {
    position: static;
    margin-bottom: 16px;
  }

  .page-contact .c-step:not(:last-child)::before {
    left: 24px;
    right: -20px;
    top: 20px;
    bottom: auto;
    width: auto;
    height: 0;
    background: none;
    border-top: 1px dashed var(--blueprint);
    opacity: .85;
  }

  .page-contact .c-read-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .c-intent,
  .page-contact .c-read-card {
    transition: opacity .12s linear;
  }

  .page-contact .c-intent:hover,
  .page-contact .c-read-card:hover {
    transform: none;
  }
}