.page-contact {
  --contact-soft: rgba(11, 18, 32, 0.7);
  --contact-line-paper: rgba(11, 18, 32, 0.16);
  --contact-cyan-deep: #0e7f6f;
  background: var(--sl-ink);
  color: var(--sl-silver);
  overflow-x: clip;
}

/* ── 面包屑 ───────────────────────────── */
.page-contact .sl-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  margin: 0 0 clamp(24px, 4vw, 44px);
  padding: 0;
  font-family: var(--sl-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sl-slate);
}

.page-contact .sl-breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.page-contact .sl-breadcrumb li + li::before {
  content: "/";
  margin: 0 10px;
  color: var(--sl-line-strong);
}

.page-contact .sl-breadcrumb a {
  color: var(--sl-slate);
  text-decoration: none;
  transition: color 140ms ease;
}

.page-contact .sl-breadcrumb a:hover {
  color: var(--sl-cyan);
}

.page-contact .sl-breadcrumb [aria-current="page"] {
  color: var(--sl-silver);
}

/* ── 首屏 ─────────────────────────────── */
.page-contact .contact-hero {
  padding-top: clamp(8px, 2vw, 20px);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 54px);
  align-items: start;
}

.page-contact .contact-hero__lead .sl-display--xl {
  margin: clamp(14px, 2vw, 22px) 0 0;
  color: var(--sl-silver);
}

.page-contact .contact-hero__lead .sl-display--xl span {
  display: block;
}

.page-contact .contact-hero__intro {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 36em;
  font-size: 17px;
  line-height: 1.8;
  color: var(--sl-silver);
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--sl-line);
  font-size: 13px;
  color: var(--sl-cyan);
}

.page-contact .contact-hero__meta-key {
  font-family: var(--sl-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sl-slate);
}

.page-contact .contact-hero__figure .sl-figure__media {
  clip-path: var(--sl-notch);
  background: var(--sl-nebula);
}

/* ── 通用区块头 ───────────────────────── */
.page-contact .contact-head {
  max-width: 64ch;
}

.page-contact .contact-head .sl-h2 {
  margin: 12px 0 0;
  color: var(--sl-silver);
}

.page-contact .contact-head .sl-prose {
  margin: 16px 0 0;
  color: var(--sl-slate);
}

/* ── 合作类型条 ───────────────────────── */
.page-contact .contact-types {
  list-style: none;
  margin: clamp(32px, 5vw, 56px) 0 0;
  padding: 0;
  border-top: 1px solid var(--sl-line);
}

.page-contact .contact-type {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: clamp(22px, 3vw, 30px) 0 clamp(22px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--sl-line);
  transition: background-color 160ms ease, transform 160ms ease, border-color 160ms ease;
}

.page-contact .contact-type::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--sl-cyan);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 180ms ease;
}

.page-contact .contact-type:hover,
.page-contact .contact-type:focus-within {
  background: linear-gradient(90deg, rgba(20, 34, 74, 0.9), rgba(20, 34, 74, 0));
  border-bottom-color: var(--sl-line-strong);
  transform: translateX(4px);
}

.page-contact .contact-type:hover::before,
.page-contact .contact-type:focus-within::before {
  transform: scaleY(1);
}

.page-contact .contact-type__num {
  margin: 0;
  font-family: var(--sl-font-mono);
  font-size: clamp(28px, 4.6vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--sl-slate);
  transition: color 160ms ease;
}

.page-contact .contact-type:hover .contact-type__num,
.page-contact .contact-type:focus-within .contact-type__num {
  color: var(--sl-cyan);
}

.page-contact .contact-type__body .sl-h3 {
  margin: 0 0 14px;
  color: var(--sl-silver);
}

.page-contact .contact-type__line {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sl-slate);
}

.page-contact .contact-type__line:last-child {
  margin-bottom: 0;
}

.page-contact .contact-type__key {
  display: inline-block;
  margin-right: 10px;
  padding: 2px 9px;
  font-family: var(--sl-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--sl-cyan);
  border: 1px solid rgba(47, 243, 213, 0.42);
  background: rgba(47, 243, 213, 0.08);
  clip-path: var(--sl-notch-sm);
}

/* ── 暖纸引用规范区 ───────────────────── */
.page-contact .contact-paper {
  background: var(--sl-paper);
  color: var(--sl-ink);
  border-top: 1px solid var(--contact-line-paper);
  border-bottom: 1px solid var(--contact-line-paper);
}

.page-contact .contact-head--paper .sl-index-label {
  color: var(--contact-cyan-deep);
}

.page-contact .contact-head--paper .sl-h2 {
  color: var(--sl-ink);
}

.page-contact .contact-head--paper .sl-prose {
  color: var(--contact-soft);
}

.page-contact .contact-standards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(30px, 4vw, 46px);
  background: var(--contact-line-paper);
  border: 1px solid var(--contact-line-paper);
}

.page-contact .contact-standard {
  background: var(--sl-paper);
  padding: clamp(20px, 3vw, 28px);
}

.page-contact .contact-standard h3 {
  margin: 0 0 10px;
  font-family: var(--sl-font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--sl-ink);
}

.page-contact .contact-standard p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--contact-soft);
}

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

.page-contact .contact-standard a:hover {
  color: var(--sl-ink);
}

/* ── 合作流程 ─────────────────────────── */
.page-contact .contact-flow {
  list-style: none;
  margin: clamp(32px, 5vw, 52px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 26px);
}

.page-contact .contact-flow__step {
  position: relative;
  padding: 26px 22px 26px;
  background: var(--sl-nebula);
  clip-path: var(--sl-notch);
}

.page-contact .contact-flow__step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 58px;
  height: 3px;
  background: var(--sl-cyan);
}

.page-contact .contact-flow__marker {
  margin: 0 0 12px;
  font-family: var(--sl-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--sl-cyan);
}

.page-contact .contact-flow__step .sl-h3 {
  margin: 0 0 12px;
  color: var(--sl-silver);
}

.page-contact .contact-flow__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--sl-slate);
}

.page-contact .contact-flow__time {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--sl-line);
  font-family: var(--sl-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--sl-gold);
}

/* ── 联系渠道 ─────────────────────────── */
.page-contact .contact-channels__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-contact .contact-channels__panel {
  position: relative;
  padding: clamp(24px, 4vw, 44px);
  background: var(--sl-nebula);
  border: 1px solid var(--sl-line);
}

.page-contact .contact-channels__panel::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 64px;
  height: 2px;
  background: var(--sl-ember);
}

.page-contact .contact-channels__panel .sl-h2 {
  margin: 12px 0 0;
  color: var(--sl-silver);
}

.page-contact .contact-channel-list {
  margin: clamp(24px, 3vw, 32px) 0 0;
}

.page-contact .contact-channel {
  padding: 18px 0;
  border-top: 1px solid var(--sl-line);
}

.page-contact .contact-channel:last-child {
  border-bottom: 1px solid var(--sl-line);
}

.page-contact .contact-channel dt {
  margin-bottom: 12px;
  font-family: var(--sl-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--sl-slate);
}

.page-contact .contact-channel dd {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-contact .contact-channel__value {
  font-size: clamp(16px, 2.4vw, 21px);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--sl-silver);
  word-break: break-all;
  -webkit-user-select: all;
  user-select: all;
}

.page-contact .contact-channel__value--addr {
  font-family: var(--sl-font-body);
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 400;
  line-height: 1.6;
  word-break: normal;
}

.page-contact .contact-channel__use {
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--sl-slate);
}

.page-contact .contact-channels__panel .sl-note {
  margin: clamp(20px, 3vw, 26px) 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--sl-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--sl-slate);
}

.page-contact .contact-channels__figure .sl-figure__media {
  clip-path: var(--sl-notch-tl);
  background: var(--sl-nebula);
}

/* ── 边界双栏 ─────────────────────────── */
.page-contact .contact-compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 40px);
  margin-top: clamp(30px, 4vw, 46px);
}

.page-contact .contact-compare__col {
  padding-top: 18px;
  border-top: 2px solid var(--sl-line-strong);
}

.page-contact .contact-compare__col--yes {
  border-top-color: var(--sl-cyan);
}

.page-contact .contact-compare__col--no {
  border-top-color: var(--sl-slate);
}

.page-contact .contact-compare__title {
  margin: 0 0 20px;
  font-family: var(--sl-font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-contact .contact-compare__col--yes .contact-compare__title {
  color: var(--sl-cyan);
}

.page-contact .contact-compare__col--no .contact-compare__title {
  color: var(--sl-slate);
}

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

.page-contact .contact-compare__list li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.74;
  color: var(--sl-silver);
}

.page-contact .contact-compare__list li::before {
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--sl-font-mono);
  font-size: 13px;
  line-height: 1.9;
}

.page-contact .contact-compare__col--yes .contact-compare__list li::before {
  content: "+";
  color: var(--sl-cyan);
}

.page-contact .contact-compare__col--no .contact-compare__list li::before {
  content: "×";
  color: var(--sl-slate);
}

.page-contact .contact-tail {
  margin: clamp(30px, 4vw, 44px) 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--sl-line);
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--sl-slate);
}

.page-contact .contact-tail a {
  color: var(--sl-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 213, 0.4);
  transition: border-color 140ms ease;
}

.page-contact .contact-tail a:hover {
  border-bottom-color: var(--sl-cyan);
}

/* ── 右侧竖向索引 ─────────────────────── */
.page-contact .contact-rail {
  display: none;
}

/* ── 响应式 ───────────────────────────── */
@media (min-width: 700px) {
  .page-contact .contact-standards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .contact-compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(32px, 5vw, 64px);
  }

  .page-contact .contact-type {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: clamp(20px, 3vw, 40px);
    padding-left: 20px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(36px, 5vw, 64px);
  }

  .page-contact .contact-channels__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }
}

@media (min-width: 1160px) {
  .page-contact .contact-standards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 1380px) {
  .page-contact .contact-rail {
    display: block;
    position: fixed;
    right: 22px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 20;
  }

  .page-contact .contact-rail ol {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 4px;
    justify-items: end;
  }

  .page-contact .contact-rail a {
    display: block;
    padding: 3px 10px;
    font-family: var(--sl-font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    color: var(--sl-slate);
    text-decoration: none;
    border-right: 1px solid transparent;
    transition: color 140ms ease, border-color 140ms ease;
  }

  .page-contact .contact-rail a:hover {
    color: var(--sl-silver);
  }

  .page-contact .contact-rail a[data-active] {
    color: var(--sl-cyan);
    border-right-color: var(--sl-cyan);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-type,
  .page-contact .contact-type::before,
  .page-contact .contact-type__num,
  .page-contact .contact-tail a {
    transition: none;
  }
}
<<<END>>>