.page-contact {
  --cc-gap: clamp(18px, 3vw, 34px);
  --cc-edge: 1px solid var(--seam-600);
  --cc-wash: rgba(51, 242, 196, 0.06);
  background: var(--ink-950);
  color: var(--chalk-050);
  font-family: var(--font-body);
  padding-bottom: clamp(40px, 6vw, 76px);
}

.page-contact .shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-inline: clamp(16px, 4vw, 40px);
}

.page-contact .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fog-400);
}

.page-contact .crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--seam-600);
}

.page-contact .crumbs a {
  color: var(--fog-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-contact .crumbs a:hover,
.page-contact .crumbs a:focus-visible {
  color: var(--volt-450);
  border-bottom-color: var(--volt-450);
}

/* ---------- 首屏 ---------- */
.page-contact .cc-hero {
  position: relative;
  padding: clamp(28px, 5vw, 64px) 0 clamp(34px, 5vw, 58px);
  background:
    radial-gradient(120% 90% at 8% 0%, rgba(20, 28, 43, 0.95) 0%, rgba(5, 7, 10, 0) 62%),
    linear-gradient(180deg, var(--night-900) 0%, var(--ink-950) 88%);
  border-bottom: var(--cc-edge);
  overflow: hidden;
}

.page-contact .cc-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--home-ember) 22%, transparent 62%);
  opacity: 0.7;
}

.page-contact .cc-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cc-gap);
  align-items: start;
}

.page-contact .cc-hero__copy {
  max-width: 40em;
}

.page-contact .cc-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  padding: 7px 14px;
  border: var(--cc-edge);
  border-radius: 2px;
  background: rgba(11, 18, 32, 0.8);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--paper-mist);
}

.page-contact .cc-pill__dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--home-ember);
  box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.16);
}

.page-contact h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 5.4vw, 62px);
  line-height: 1.06;
  letter-spacing: 0.01em;
  color: var(--chalk-050);
  text-wrap: balance;
}

.page-contact h1::after {
  content: "";
  display: block;
  width: 74px;
  height: 4px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--home-ember), rgba(255, 78, 26, 0));
}

.page-contact .lede {
  margin: 0 0 16px;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--paper-mist);
}

.page-contact .prose {
  max-width: 34em;
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--fog-400);
}

.page-contact .cc-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .cc-jump a {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--seam-600);
  border-left: 3px solid var(--home-ember);
  border-radius: 2px;
  background: var(--panel-800);
  color: var(--chalk-050);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: transform 220ms var(--ease-out), border-color 220ms var(--ease-out), background 220ms var(--ease-out);
}

.page-contact .cc-jump a:hover {
  transform: translateY(-2px);
  border-color: var(--home-ember);
  background: var(--night-900);
}

.page-contact .cc-jump a:focus-visible {
  outline: 2px solid var(--volt-450);
  outline-offset: 3px;
}

.page-contact .cc-hero__media {
  margin: 0;
  border: var(--cc-edge);
  background: var(--panel-800);
}

.page-contact .cc-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: cover;
}

.page-contact .media-frame__cap {
  padding: 12px 16px;
  border-top: var(--cc-edge);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--fog-400);
}

/* ---------- 章节通用 ---------- */
.page-contact .section {
  padding: clamp(40px, 6vw, 78px) 0 0;
}

.page-contact .section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 16px;
}

.page-contact .section__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--volt-450);
}

.page-contact .section__num::after {
  content: "";
  display: block;
  width: 22px;
  height: 1px;
  margin-top: 8px;
  background: var(--seam-600);
}

.page-contact .section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--chalk-050);
  text-wrap: balance;
}

.page-contact .cc-section-note {
  margin: 0 0 26px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--fog-400);
}

/* ---------- 三条通道 ---------- */
.page-contact .cc-chan-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .cc-chan {
  position: relative;
  padding: 26px 24px 22px;
  background: var(--panel-800);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
  transition: background 240ms var(--ease-out), transform 240ms var(--ease-out);
}

.page-contact .cc-chan::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--seam-600);
  transition: background 240ms var(--ease-out);
}

.page-contact .cc-chan:hover,
.page-contact .cc-chan:focus-within {
  background: var(--night-900);
  transform: translateY(-2px);
}

.page-contact .cc-chan:hover::before,
.page-contact .cc-chan:focus-within::before {
  background: var(--home-ember);
}

.page-contact .cc-chan__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--volt-450);
}

.page-contact .cc-chan__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--chalk-050);
}

.page-contact .cc-chan__body {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fog-400);
}

.page-contact .cc-chan__meta {
  margin: 0 0 18px;
  padding: 12px 0 0;
  border-top: 1px dashed var(--seam-600);
}

.page-contact .cc-chan__meta dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--signal-amber);
  margin-bottom: 6px;
}

.page-contact .cc-chan__meta dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--paper-mist);
}

.page-contact .cc-chan__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--home-ember);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 78, 26, 0.4);
  padding-bottom: 3px;
}

.page-contact .cc-chan__link:focus-visible {
  outline: 2px solid var(--volt-450);
  outline-offset: 4px;
}

/* ---------- 纠错四要素 ---------- */
.page-contact .cc-fix {
  border-top: var(--cc-edge);
  margin-top: clamp(40px, 6vw, 74px);
}

.page-contact .cc-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: ccstep;
}

.page-contact .cc-step {
  position: relative;
  padding: 22px 20px 20px;
  border: var(--cc-edge);
  border-top: 2px solid var(--seam-600);
  background: linear-gradient(180deg, rgba(20, 28, 43, 0.92), rgba(11, 18, 32, 0.92));
  transition: border-top-color 240ms var(--ease-out);
}

.page-contact .cc-step:hover {
  border-top-color: var(--volt-450);
}

.page-contact .cc-step__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--volt-450);
  line-height: 1;
}

.page-contact .cc-step__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  color: var(--chalk-050);
}

.page-contact .cc-step__body {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fog-400);
}

.page-contact .cc-tip {
  margin: 22px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--signal-amber);
  background: rgba(255, 197, 61, 0.07);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper-mist);
}

.page-contact .cc-tip--wide {
  margin-top: 26px;
  border-left-color: var(--alert-rose);
  background: rgba(255, 92, 122, 0.07);
}

/* ---------- 联系方式 ---------- */
.page-contact .cc-contact {
  border-top: var(--cc-edge);
  margin-top: clamp(40px, 6vw, 74px);
}

.page-contact .cc-contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cc-gap);
  align-items: start;
  margin-top: 6px;
}

.page-contact .cc-band {
  padding: 8px 0;
  background: linear-gradient(90deg, rgba(51, 242, 196, 0.1), rgba(51, 242, 196, 0) 70%);
  border-top: 1px solid var(--volt-450);
}

.page-contact .cc-band__row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 18px 18px 4px;
}

.page-contact .cc-band__icon {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--seam-600);
  color: var(--volt-450);
  background: var(--night-900);
}

.page-contact .cc-band__icon svg {
  width: 19px;
  height: 19px;
  display: block;
}

.page-contact .cc-band__key {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fog-400);
}

.page-contact .cc-band__val {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.8vw, 19px);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.4;
  color: var(--chalk-050);
  word-break: break-word;
}

.page-contact .cc-band__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--fog-400);
}

.page-contact .cc-band .divider {
  margin: 0 0 0 50px;
  border-top: 1px dashed var(--seam-600);
}

.page-contact .cc-contact__figure {
  margin: 0;
  border: var(--cc-edge);
  background: var(--panel-800);
}

.page-contact .cc-contact__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 合作沟通 ---------- */
.page-contact .cc-partner {
  border-top: var(--cc-edge);
  margin-top: clamp(40px, 6vw, 74px);
}

.page-contact .cc-partner__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cc-gap);
  align-items: start;
}

.page-contact .cc-partner__copy .prose + .cc-topic-list {
  margin-top: 22px;
}

.page-contact .cc-partner__copy .cc-topic-list + .prose {
  margin-top: 22px;
}

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

.page-contact .cc-topic-list li {
  padding: 16px 18px;
  border: var(--cc-edge);
  background: var(--night-900);
}

.page-contact .cc-topic-list__label {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--chalk-050);
}

.page-contact .cc-topic-list__sample {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  letter-spacing: 0.01em;
  color: var(--volt-450);
  word-break: break-word;
}

.page-contact .cc-side {
  padding: 24px 22px;
  background: var(--panel-800);
  border-top: 2px solid var(--home-ember);
}

.page-contact .cc-side__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--chalk-050);
}

.page-contact .cc-side__list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .cc-side__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-mist);
}

.page-contact .cc-side__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 2px;
  background: var(--home-ember);
}

.page-contact .cc-side__foot {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--seam-600);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--fog-400);
}

/* ---------- 回复节奏 ---------- */
.page-contact .cc-response {
  border-top: var(--cc-edge);
  margin-top: clamp(40px, 6vw, 74px);
}

.page-contact .cc-flow {
  position: relative;
  margin-top: 8px;
  padding: 26px 22px;
  background: linear-gradient(160deg, var(--night-900) 0%, var(--panel-800) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-contact .cc-flow__line {
  position: absolute;
  left: 30px;
  top: 34px;
  bottom: 34px;
  width: 1px;
  background: linear-gradient(180deg, var(--home-ember), var(--volt-450));
  opacity: 0.6;
}

.page-contact .cc-flow__steps {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 22px;
}

.page-contact .cc-flow__steps li {
  position: relative;
  padding-left: 26px;
}

.page-contact .cc-flow__steps li::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-950);
  border: 2px solid var(--volt-450);
}

.page-contact .cc-flow__k {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--volt-450);
}

.page-contact .cc-flow__v {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--paper-mist);
}

/* ---------- 轨迹线 ---------- */
.page-contact .cc-trail {
  border-top: var(--cc-edge);
  margin-top: clamp(40px, 6vw, 74px);
}

.page-contact .cc-trail__title {
  margin: 22px 0 8px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 800;
  color: var(--chalk-050);
}

.page-contact .cc-trail__svg {
  display: block;
  width: 100%;
  height: 54px;
  opacity: 0.85;
}

.page-contact .cc-trail__links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .cc-trail__links a {
  display: block;
  padding: 13px 16px;
  border: 1px solid var(--seam-600);
  border-left: 3px solid var(--volt-450);
  background: var(--night-900);
  color: var(--paper-mist);
  font-size: 14.5px;
  line-height: 1.6;
  text-decoration: none;
  transition: background 220ms var(--ease-out), border-left-color 220ms var(--ease-out), color 220ms var(--ease-out);
}

.page-contact .cc-trail__links a:hover {
  background: var(--panel-800);
  border-left-color: var(--home-ember);
  color: var(--chalk-050);
}

.page-contact .cc-trail__links a:focus-visible {
  outline: 2px solid var(--volt-450);
  outline-offset: 3px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-contact .cc-chan-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

@media (min-width: 960px) {
  .page-contact .cc-hero__grid {
    grid-template-columns: minmax(0, 1.28fr) minmax(260px, 0.72fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-contact .cc-hero__media {
    margin-top: 26px;
  }

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

  .page-contact .cc-contact__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.75fr);
    gap: clamp(24px, 3vw, 44px);
  }

  .page-contact .cc-partner__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(260px, 0.7fr);
    gap: clamp(24px, 3vw, 48px);
  }

  .page-contact .cc-flow {
    padding: 32px 36px;
  }

  .page-contact .cc-flow__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
  }

  .page-contact .cc-flow__line {
    left: 36px;
    right: 36px;
    top: 41px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, var(--home-ember), var(--volt-450));
  }

  .page-contact .cc-flow__steps li {
    padding-left: 0;
    padding-top: 26px;
  }

  .page-contact .cc-flow__steps li::before {
    left: 0;
    top: 10px;
  }
}

@media (min-width: 1200px) {
  .page-contact .cc-trail__links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .cc-jump a,
  .page-contact .cc-chan,
  .page-contact .cc-step,
  .page-contact .cc-trail__links a {
    transition: none;
  }

  .page-contact .cc-chan:hover,
  .page-contact .cc-chan:focus-within,
  .page-contact .cc-jump a:hover {
    transform: none;
  }
}
<<<PAGE_CSS_DONE>>>