.page-contact {
  --c-line-dark: rgba(201, 185, 163, .18);
  --c-line-paper: rgba(10, 22, 34, .14);
  --c-ink-soft: rgba(10, 22, 34, .74);
  --c-paper-soft: rgba(245, 243, 238, .72);
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(22px, 4vw, 34px) 0 clamp(44px, 6vw, 80px);
  background:
    radial-gradient(120% 100% at 92% -22%, rgba(53, 224, 208, .16), transparent 58%),
    radial-gradient(90% 80% at -10% 110%, rgba(242, 163, 60, .13), transparent 62%),
    var(--ink-900);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: 30px;
  margin-top: clamp(22px, 3.4vw, 38px);
}

.page-contact .contact-hero__title {
  margin: 16px 0 0;
  font-size: clamp(32px, 7.4vw, 72px);
  font-weight: 800;
  line-height: 1.07;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .contact-hero__title .hl {
  color: var(--cyan);
}

.page-contact .contact-hero__lede {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--sand);
}

/* 页内章节索引 */
.page-contact .contact-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: clamp(26px, 4vw, 42px);
  padding-top: clamp(18px, 3vw, 26px);
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--sand);
  text-decoration: none;
  border: 1px solid var(--line);
  clip-path: var(--cut);
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .contact-jump__link::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--amber);
  transform: rotate(45deg);
  transition: background-color .18s var(--ease);
}

.page-contact .contact-jump__link:hover,
.page-contact .contact-jump__link:focus-visible {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .contact-jump__link:hover::before,
.page-contact .contact-jump__link:focus-visible::before {
  background: var(--ink-900);
}

/* 快捷信息卡 */
.page-contact .contact-quick {
  background: var(--ink-800);
  clip-path: var(--cut);
  padding: 8px 22px 4px;
}

.page-contact .contact-quick__row {
  display: grid;
  gap: 5px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-quick__row:last-child {
  border-bottom: 0;
}

.page-contact .contact-quick__key {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--slate);
}

.page-contact .contact-quick__val {
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .contact-quick__val--mail {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--cyan);
  word-break: break-all;
}

/* ---------- 订阅阶梯 ---------- */
.page-contact .contact-ladder {
  padding: clamp(46px, 7vw, 92px) 0 clamp(44px, 6vw, 84px);
  background:
    linear-gradient(180deg, rgba(18, 42, 64, 0) 0%, rgba(18, 42, 64, .55) 55%, rgba(11, 29, 46, 1) 100%),
    var(--ink-900);
}

.page-contact .contact-ladder__title {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .contact-ladder .lede {
  max-width: 52ch;
  color: var(--sand);
}

.page-contact .contact-ladder__figure {
  margin: clamp(26px, 4vw, 40px) 0 clamp(26px, 4vw, 38px);
  overflow: hidden;
  clip-path: var(--cut);
  background: var(--ink-800);
}

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

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

.page-contact .ladder__step {
  position: relative;
  padding: 26px 22px 24px;
  background: var(--ink-800);
  clip-path: var(--cut);
}

.page-contact .ladder__step::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--step-accent, var(--amber));
}

.page-contact .ladder__step:nth-child(1) { --step-accent: var(--amber); }
.page-contact .ladder__step:nth-child(2) { --step-accent: var(--cyan); }
.page-contact .ladder__step:nth-child(3) { --step-accent: var(--moss); }

.page-contact .ladder__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--step-accent, var(--amber));
}

.page-contact .ladder__name {
  margin: 12px 0 0;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .ladder__desc {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-paper-soft);
}

.page-contact .ladder__foot {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--sand);
}

.page-contact .ladder__note {
  margin: clamp(24px, 3.4vw, 34px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .contact-ladder a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-contact .contact-ladder a:hover,
.page-contact .contact-ladder a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--amber);
}

/* ---------- 纸白区块 ---------- */
.page-contact .contact-paper {
  background: var(--paper);
  color: var(--ink-700);
  padding: clamp(44px, 6.4vw, 88px) 0;
}

.page-contact .contact-paper h2 {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ink-700);
}

.page-contact .contact-paper .lede {
  max-width: 54ch;
  color: var(--c-ink-soft);
}

.page-contact .contact-paper .eyebrow {
  color: rgba(10, 22, 34, .52);
}

.page-contact .contact-paper a:not(.btn) {
  color: var(--ink-700);
  text-decoration: underline;
  text-decoration-color: var(--sand);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-color .18s var(--ease);
}

.page-contact .contact-paper a:not(.btn):hover,
.page-contact .contact-paper a:not(.btn):focus-visible {
  text-decoration-color: var(--moss);
}

/* 摘要内容 */
.page-contact .digest-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(24px, 3.6vw, 38px);
}

.page-contact .digest-item {
  padding: 20px 22px 22px;
  background: rgba(255, 255, 255, .66);
  border: 1px solid var(--c-line-paper);
  border-left: 3px solid var(--amber);
}

.page-contact .digest-item:nth-child(2) { border-left-color: var(--cyan); }
.page-contact .digest-item:nth-child(3) { border-left-color: var(--moss); }
.page-contact .digest-item:nth-child(4) { border-left-color: var(--sand); }

.page-contact .digest-item__title {
  margin: 0;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink-700);
}

.page-contact .digest-item__text {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-ink-soft);
}

.page-contact .digest-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 4vw, 42px);
  background: var(--c-line-paper);
  border: 1px solid var(--c-line-paper);
}

.page-contact .digest-stat {
  background: var(--paper);
  padding: 18px 16px;
}

.page-contact .digest-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 600;
  line-height: 1.1;
  color: var(--ink-700);
}

.page-contact .digest-stat__label {
  display: block;
  margin-top: 7px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: rgba(10, 22, 34, .56);
}

/* ---------- 联系渠道 ---------- */
.page-contact .contact-reach {
  border-top: 1px solid var(--c-line-paper);
}

.page-contact .reach-grid {
  display: grid;
  gap: 28px;
  margin-top: clamp(24px, 3.6vw, 38px);
}

.page-contact .reach-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: rgba(10, 22, 34, .55);
}

.page-contact .reach-email {
  display: inline-block;
  margin: 10px 0 0;
  padding-bottom: 7px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.4vw, 21px);
  font-weight: 600;
  color: var(--ink-700);
  word-break: break-all;
  border-bottom: 2px solid var(--sand);
}

.page-contact .reach-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .reach-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.76;
  color: var(--c-ink-soft);
}

.page-contact .reach-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 7px;
  height: 7px;
  background: var(--moss);
  transform: rotate(45deg);
}

.page-contact .reach-note {
  margin: 20px 0 0;
  padding: 14px 16px;
  background: rgba(201, 185, 163, .28);
  border-left: 3px solid var(--amber);
  font-size: 14px;
  line-height: 1.76;
  color: var(--c-ink-soft);
}

.page-contact .reach-figure {
  margin: 0;
  overflow: hidden;
  clip-path: var(--cut);
  background: var(--ink-800);
}

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

.page-contact .reach-figure figcaption {
  padding: 11px 14px 13px;
  background: rgba(10, 22, 34, .06);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  line-height: 1.6;
  color: rgba(10, 22, 34, .62);
}

.page-contact .contact-modes {
  display: grid;
  gap: 18px;
  margin-top: clamp(30px, 4.4vw, 48px);
  padding-top: clamp(24px, 3.4vw, 36px);
  border-top: 1px solid var(--c-line-paper);
}

.page-contact .contact-mode__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink-700);
}

.page-contact .contact-mode__text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-ink-soft);
}

/* ---------- 合作板块 ---------- */
.page-contact .contact-partner {
  padding: clamp(46px, 7vw, 94px) 0;
  background:
    radial-gradient(90% 80% at 8% 0%, rgba(53, 224, 208, .13), transparent 60%),
    radial-gradient(70% 70% at 100% 100%, rgba(242, 163, 60, .09), transparent 62%),
    var(--ink-900);
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-partner h2 {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .contact-partner .lede {
  max-width: 54ch;
  color: var(--sand);
}

.page-contact .partner-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(24px, 3.6vw, 38px);
}

.page-contact .partner-item {
  padding: 24px 22px 26px;
  background: var(--ink-800);
  clip-path: var(--cut);
  border-top: 2px solid var(--line-cyan);
}

.page-contact .partner-item:nth-child(2) { border-top-color: var(--line-amber); }
.page-contact .partner-item:nth-child(3) { border-top-color: var(--line); }

.page-contact .partner-item__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .partner-item__text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-paper-soft);
}

.page-contact .contact-partner a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-contact .contact-partner a:hover,
.page-contact .contact-partner a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--amber);
}

/* ---------- 收束 ---------- */
.page-contact .contact-close {
  padding: clamp(40px, 6vw, 72px) 0 clamp(56px, 8vw, 96px);
  background: linear-gradient(180deg, var(--ink-900) 0%, #071420 100%);
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-close__title {
  margin: 0;
  font-size: clamp(26px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .contact-close__text {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--sand);
}

.page-contact .contact-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.4vw, 36px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .digest-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

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

  .page-contact .contact-modes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }
}

@media (min-width: 860px) {
  .page-contact .ladder {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    align-items: end;
  }

  .page-contact .ladder__step:nth-child(1) { padding-top: 4px; }
  .page-contact .ladder__step:nth-child(2) { padding-top: 46px; }
  .page-contact .ladder__step:nth-child(3) { padding-top: 88px; }

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

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, .68fr);
    gap: 48px;
    align-items: start;
    margin-top: 48px;
  }

  .page-contact .reach-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .85fr);
    gap: 44px;
    align-items: start;
  }
}
<<<END>>>